SUPPLEMENTARY INFORMATION:

Executive Summary

This final rule incorporates a total of 23 standards that have not previously been incorporated by reference into the regulations and updates the incorporation of 40 standards already referenced in the regulations. The updates to these 40 existing standards entail either incorporating newer editions of, addenda to, amendments to, or reaffirmations of the standards. The new standards and the updates to existing standards were developed by the American Petroleum Institute (API), the American Gas Association (AGA), GPA Midstream Association (GPA), and American Society of Mechanical Engineers (ASME), and address oil and gas measurement technologies and safety design factors related to oil and gas operations on the OCS. The documents that address oil and gas measurement technologies reflect the latest measurement standards, and their incorporation will provide industry with up-to-date requirements for measurement technology. The safety-related documents comprise four integrity management standards, two offshore structure standards, two bolting/metallurgy standards, and one well workover standard. The incorporation by reference (IBR) of these standards will help ensure that BSEE's regulations reflect improvements in operational safety and recognize advancements in science and technology, including those advancements related to measurement accuracy.

Table of Contents

I. Background

A. BSEE Statutory and Regulatory Authority and Responsibilities

B. Purpose and Summary of the Rule

C. Summary of Documents Incorporated by Reference

II. Discussion of Public Comments on the Proposed Rule

III. Section-by-Section Summary and Responses to Comments on the Proposed Rule

IV. Derivation Table

V. Procedural Matters

I. Background

A. BSEE Statutory and Regulatory Authority and Responsibilities

BSEE derives its authority primarily from the Outer Continental Shelf Lands Act (OCSLA), 43 U.S.C. 1331-1356a. OCSLA authorizes the Secretary of the Interior (Secretary) to lease the OCS for mineral development and to regulate oil and gas exploration, development, and production operations on the OCS. OCSLA also authorizes the Secretary to regulate OCS energy-related activities involving sources other than oil and gas. The Secretary has delegated authority to perform certain of these functions to BSEE. To carry out its responsibilities, BSEE regulates oil and gas exploration, development, and production operations on the OCS. Among other purposes, regulations administered by BSEE seek to prevent injury, loss of life, and damage to property, natural resources, and the environment. The Department of the Interior (Department) incorporates by reference in its regulations many oil and gas industry standards to require compliance with those standards in offshore operations. Detailed information concerning BSEE's regulations and guidance to the offshore oil and gas industry may be found on BSEE's website at https://www.bsee.gov/​guidance-and-regulations.

B. Purpose and Summary of the Rule

BSEE uses standards (STD), specifications (Spec), recommended practices (RP), manuals of petroleum measurement standards (MPMS),^[1] and other documents developed by standard development organizations (SDOs) as a means of establishing requirements for activities on the OCS. This practice, known as “incorporation by reference,” allows the Department to incorporate the standards from technical documents into the regulations so that the regulations reflect well accepted industry standards without increasing the volume of the Code of Federal Regulations (CFR). The Department currently incorporates by reference 125 industry standards into its offshore operating regulations, which are administered by BSEE.

The National Technology Transfer and Advancement Act (NTTAA) requires BSEE to “use technical standards that are developed or adopted by voluntary consensus standards bodies . . . to carry out policy objectives or activities[,]” including those on the OCS. According to the relevant definitional guidance from the Office of Management and Budget (OMB), standards include those developed by SDOs that are currently incorporated into regulations administered by BSEE ( e.g., industry standards, codes, specifications, and RPs).

Where appropriate, the Department incorporates industry standards into its regulations by reference without republishing the standards in their entirety. The legal effect of incorporation by reference is that the incorporated standards become regulatory requirements. This incorporated material, like any other duly promulgated regulation, has the force and effect of law. Operators, lessees, and other regulated parties must comply with the documents that are incorporated by reference in the regulations. ( printed page 35305)

Incorporation by reference of a document or publication is limited to the version of the document or publication cited in the regulations. This means that newer editions, versions, amendments, or revisions to documents that are already incorporated by reference in the regulations are not part of the regulations until the Department promulgates a rule in the Federal Register that incorporates the new, updated, or revised version of the document.

Industry standards incorporated into the Department's regulations are invaluable because they avoid the need to promulgate more detailed regulations. Incorporating industry standards into the Department's regulations also allows the Bureau's administration of those regulations to evolve from a regulatory process that reacts to inadequacies in OCS operations to one that instead follows a more orderly process that recognizes technical innovation and progressive industry ideas aimed at improving performance, safety, and efficiencies.

BSEE continually participates in reviews, revisions, and updates of standards with SDOs and determines whether new editions should be incorporated into the Department's regulations. Incorporation of new editions may be necessary because of changes in technology, environmental concerns, individual incidents, or incident trends. Also, BSEE may request an SDO to develop a new standard based on incident analysis or due to the introduction of new technologies, such as deep-water operations and floating production systems.

BSEE reviewed the requirements in the standards listed in the next section to ensure that industry uses the best available and most accurate measurement technologies. BSEE's review indicates that the decision to use these standards will not impose additional costs on the offshore oil and gas industry, because industry currently uses these standards.

C. Summary of Documents Incorporated by Reference

The Office of the Federal Register's (OFR) regulations, at 1 CFR part 51, govern how BSEE and other Federal agencies incorporate documents by reference. Agencies may incorporate a document by reference by publishing in the Federal Register the document title, edition, date, author, publisher, identification number, and other specified information. The preamble of the rule must contain a summary of each document incorporated by reference, as well as discuss the ways that the incorporated materials are reasonably available to interested parties and how interested parties can obtain those materials. This preamble also contains a summary of certain documents that have already been incorporated by reference into the regulations but are affected by this rulemaking. More specifically, this rulemaking will add express references to these documents at certain regulations in 30 CFR part 250 to clarify their longstanding use and existing incorporation into the regulations. The text immediately below summarizes the documents that will be or have already been incorporated by reference in 30 CFR 250.198 and the changes to the regulatory text. Descriptions of the standards described in this section are adopted or paraphrased from the SDO publications. This section of the preamble concludes with a discussion regarding the availability of the documents that are incorporated by reference.

1. American Gas Association (AGA) Report No. 8, Part 1—Thermodynamic Properties of Natural Gas and Related Gases Detail and Gross Equations of State, Third Edition, April 2017

AGA Report No. 8, Part 1 presents information for the computation of thermodynamic properties ( e.g., compressibility factor, density, and speed of sound) of natural gas and related gases with the DETAIL and GROSS equations of state. Uncertainty estimations for different compositions, pressures, and temperatures are given in Part 1. The computations described in Part 1 are valid for single-phase gaseous states only. BSEE is incorporating by reference this standard for the first time into its regulations at § 250.198(b)(2) and adding a reference to this standard in § 250.1203(b)(2)(ii).

2. AGA Report No. 8, Part 2—Thermodynamic Properties of Natural Gas and Related Gases, GERG—2008 Equation of State, First Edition, April 2017

AGA Report No. 8, Part 2 presents information for computation of thermodynamic properties, including compressibility factors, densities, and speeds of sound, of natural gas and related gases, for gaseous states, vapor-liquid equilibrium states, and liquid states, based on the GERG-2008 equation of state. It also improves upon the performance of the AGA 8 DETAIL equation for gas-phase properties, especially at high pressures and low temperatures. The ranges of temperature, pressure, and composition for which the GERG-2008 equation of state applies are much wider than the AGA 8 DETAIL equation. Uncertainty estimations for different compositions, pressures, and temperatures are given. With the availability of vapor-liquid equilibrium and liquid state calculations, Part 2 enables the calculation of dew points, bubble points, and the critical point. BSEE is incorporating by reference this standard for the first time into its regulations at § 250.198(b)(3) and adding a reference to this standard in § 250.1203(b)(2)(iii).

3. AGA Report No. 9—Measurement of Gas by Multipath Ultrasonic Meters, Fourth Edition, 2022

AGA Report No. 9 describes the optimum conditions and best practices for multipath ultrasonic transit-time flow meters used for the measurement of natural gas. Multipath ultrasonic meters have at least two independent pairs of measuring transducers (acoustic paths). Typical applications include measuring the flow of gas through production facilities, transmission pipelines, storage facilities, distribution systems, and large end-use customer meter sets. BSEE currently requires multipath ultrasonic meters used for gas royalty measurement to contain at least three independent pairs of measuring transducers. The latest edition of AGA Report 9 allows the calibration of ultrasonic meters with laboratory piping in lieu of shipping the entire metering package to the calibration lab. BSEE is updating the reference of AGA Report No. 9 currently in the regulations to the Fourth edition of this standard. BSEE is also renumbering the regulatory citation from § 250.198(b)(2) to § 250.198(b)(4), this standard is referenced in § 250.1203(b)(2)(iv)).

4. AGA Report No. 11—Measurement of Natural Gas by Coriolis Meter, Second Edition, February 2013

AGA Report No. 11 was developed for the specification, calibration, installation, operation, maintenance, and verification of Coriolis flow meters and is limited to the measurement of single-phase natural gas, consisting primarily of hydrocarbon gases mixed with other associated gases usually known as “diluents.” Although Coriolis meters are used to measure a broad range of compressible fluids, non-natural gas applications are beyond the scope of this document. BSEE is incorporating by reference this standard for the first time into the regulations at § 250.198(b)(6) and adding a reference to this standard in § 250.1203(b)(2)(vi). ( printed page 35306)

5. API Manual of Petroleum Measurement Standards Chapter 3.1A—Standard Practice for the Manual Gauging of Petroleum and Petroleum Products, Third Edition, August 2013, d December 2018, Errata 1, January 2021

This document is applicable for gauging quantities of liquids having Reid vapor pressures less than 103 kPa (15 psia). This document describes the following procedures and influences for manual gauging:

• The procedures for manually gauging the liquid level of petroleum and petroleum products in non-pressure fixed-roof, floating-roof tanks and marine tank vessels;
• Procedures for manually gauging the level of free water that may be found with the petroleum or petroleum products;
• Methods used to verify the length of gauge tapes under field conditions and the influence of bob weights and temperature on the gauge tape length; and
• Influences that may affect the position of gauging reference point (either the datum plate or the reference gauge point).

Throughout this standards document, the term petroleum is used to denote petroleum, petroleum products, or the liquids normally associated with the petroleum industry. The Third Edition added sections on gauging procedures, reading and recording gauges, operational precautions, and system integrity. This document is currently incorporated by reference in § 250.198(e)(10). BSEE is updating the incorporation by reference from the Second to the Third Edition, acknowledging the 2018 reaffirmation, renumbering the regulatory citation to § 250.198(e)(1)(iii)(A), changing the title of the standard from API MPMS Chapter 3, Section 1A to API MPMS Chapter 3.1A, and adding an express reference to this standard in § 250.1202(a)(2)(iii) and (l)(4)(iii) to clarify the longstanding use of this document already incorporated in the current regulations.

6. API Manual of Petroleum Measurement Standards Chapter 4—Proving Systems, Section 1—Introduction, Third Edition, February 2005; reaffirmed June 2014

Section 1, Proving Systems, is a general introduction to the subject of proving. The requirements in Chapter 4 are based on customary practices that evolved for crude oils and products covered by API MPMS Ch. 11.1. This document is currently incorporated by reference in § 250.198(e)(12). BSEE is updating the incorporation by reference in the regulations by renumbering the regulatory citation to § 250.198(e)(1)(iv)(A) and adding an express reference to this standard in § 250.1202(a)(2)(v) to clarify the longstanding use of this document already incorporated in the current regulations.

7. API Manual of Petroleum Measurement Standards Chapter 4—Proving Systems, Section 2—Displacement Provers, Third Edition, September 2003, Addendum February 2015, Reaffirmed December 2022

This chapter outlines the essential elements of displacement provers that do, and do not, accumulate a minimum of 10,000 whole meter pulses between detector switches, and provides design and installation details for the types of displacement provers that are currently in use. The provers discussed in this chapter are designed for proving measurement devices under dynamic operating conditions with single-phase liquid hydrocarbons. These provers consist of a pipe section through which a displacer travels and activates detection devices before stopping at the end of the run as the stream is diverted or bypassed. This document is currently incorporated by reference in § 250.198(e)(13). BSEE is updating the incorporation by reference in the regulations by acknowledging the 2022 reaffirmation and 2015 Addendum, renumbering the regulatory citation to § 250.198(e)(1)(iv)(B), and adding an express reference to this standard in § 250.1202(a)(2)(vi) to clarify the longstanding use of this document already incorporated in the current regulations.

8. API Manual of Petroleum Measurement Standards Chapter 4.5—Master Meter Provers, Fourth Edition, June 2016

This standard covers the use of displacement, turbine, Coriolis, and ultrasonic meters as master meters. The requirements in this standard are intended for single-phase liquid hydrocarbons. Meter proving requirements for other fluids should be appropriate for the overall custody transfer accuracy and should be agreeable to the parties involved. The Fourth Edition added sections on Master Meter Factors for combined uncertainty, random uncertainty, and related examples. This document does not cover master meters to be used for the calibration of provers. For information concerning master meter calibration of provers, see API MPMS Chapter 4.9.3. The title of this standard has also changed from API MPMS Chapter 4, Section 5 to API MPMS Chapter 4.5. This document is currently incorporated by reference in § 250.198(e)(15). BSEE is updating the incorporation by reference from the Second to the Fourth Edition, acknowledging the 2022 reaffirmation, renumbering the citation and updating the reference to this standard in the new § 250.198(e)(1)(iv)(D) to reflect the new name of the standard, and adding an express reference to this standard in § 250.1202(a)(2)(viii) to clarify the longstanding use of this document already incorporated in the current regulations.

9. API Manual of Petroleum Measurement Standards Chapter 4—Proving Systems, Section 7—Field Standard Test Measures, Third Edition, April 2009, Reaffirmed June 2014

This standard describes the essential elements of field standard test measures by providing descriptions, construction requirements, as well as inspection, handling, and calibration methods. Bottom-neck scale test measures and prover tanks are not addressed in this document. The scope of this standard is limited to the certification of “delivered volumes” of test measures. The Third Edition includes information on calibration frequency of test measurements and an example of a NIST report of calibration. This document is currently incorporated by reference in § 250.198(e)(17). BSEE is updating the incorporation by reference from the Second to the Third Edition, acknowledging the 2014 reaffirmation, renumbering the regulatory citation to § 250.198(e)(1)(iv)(F), and adding an express reference to this standard in § 250.1202(a)(2)(x) to clarify the longstanding use of this document already incorporated in the current regulations.

10. API Manual of Petroleum Measurement Standards Chapter 4.8—Operation of Proving Systems, Third Edition, July 2021

This standard provides information for operating meter provers on single-phase liquid hydrocarbons. It is a reference manual for operating proving systems. The requirements of this chapter are based upon customary practices for single-phase liquids. The standard is purposely written for hydrocarbons, but much of the information contained may be applicable to other liquids. Specific requirements for other liquids should be agreeable to parties involved. The Third Edition added information on frequency of meter proving, proving locations, types of provers, calibration frequency, ( printed page 35307) and proving concerns. The title of this standard also changed from API MPMS Chapter 4, Section 8 to API MPMS Chapter 4.8. This document is currently incorporated by reference in § 250.198(e)(18). BSEE is updating the incorporation by reference from the First to the Third Edition, renumbering the regulatory citation to § 250.198(e)(1)(iv)(G), changing the title of the standard from API MPMS Chapter 4, Section 8 to API MPMS Chapter 4.8, and updating the references to this standard in § 250.1202(a)(2)(xi), (a)(3)(i), (f)(1)(ii), and (g)(1) to reflect the new name of the standard.

11. API Manual of Petroleum Measurement Standards Chapter 4—Proving Systems, Section 9—Methods of Calibration for Displacement and Volumetric Tank Provers, Part 2—Determination of the Volume of Displacement and Tank Provers by the Water-Draw Method of Calibration, First Edition, December 2005, Reaffirmed July 2015

This standard covers all the procedures required to determine the field data necessary to calculate a base prover volume, of either displacement provers or volumetric tank provers, by the water-draw method of calibration. The document will enable the user to perform all the activities necessary to prepare the prover, conduct calibration runs, and record all the required data necessary to calculate the base volumes of displacement and tank provers. Evaluation of the results and troubleshooting of many calibration problems are also discussed. Detailed calculation procedures are not included in this standard. BSEE will incorporate by reference this standard into the regulations for the first time at § 250.198(e)(1)(iv)(H) and add a reference to this standard in § 250.1202(a)(2)(xii).

12. API Manual of Petroleum Measurement Standards Chapter 5—Metering, Section 1—General Considerations for Measurement by Meters, Fourth Edition, September 2005, Errata 1 June 2008, Errata 2 June 2011, Reaffirmed December 2022

API MPMS Chapter 5 is a guide for the proper specification, installation, and operation of meter runs designed to dynamically measure liquid hydrocarbons so that acceptable accuracy, service life, safety, reliability, and quality control can be achieved. API MPMS Chapter 5 also includes information that will assist in troubleshooting and improving the performance of meters. This document is currently incorporated by reference in § 250.198(e)(19). BSEE is updating the incorporation by reference in the regulations by acknowledging the 2022 reaffirmation and 2008/2011 Errata. The errata corrected printing errors of references at the end of a paragraph, e.g., “Paragraph 5.1.9.4.2, the reference at the end of the paragraph should read: (see 5.1.9.5).” BSEE is also renumbering the citation to § 250.198(e)(1)(v)(A), and adding an express reference to this standard in § 250.1202(a)(2)(xiii) to clarify the longstanding use of this document already incorporated in the current regulations.

13. API Manual of Petroleum Measurement Standards Chapter 5—Metering, Section 3—Measurement of Liquid Hydrocarbons by Turbine Meters, Fifth Edition, September 2005; Reaffirmed August 2014

Section 3 of API MPMS Chapter 5 covers the unique installation requirements and performance characteristics of turbine meters in liquid-hydrocarbon service. This document is currently incorporated by reference in § 250.198(e)(21). BSEE is updating the incorporation by reference in the regulations by renumbering the regulatory citation to § 250.198(e)(1)(v)(C) and adding an express reference to this standard in § 250.1202(a)(2)(xv) to clarify the longstanding use of this document already incorporated in the current regulations.

14. API Manual of Petroleum Measurement Standards Chapter 5—Metering, Section 4—Accessory Equipment for Liquid Meters, Fourth Edition, September 2005; Errata May 2015, Reaffirmed August 2015

Section 4 of API MPMS Chapter 5 describes the characteristics of accessory equipment that may be used with meters in liquid hydrocarbon service. Having a knowledge of these characteristics helps designers and operators of meter installations provide satisfactory quantity measurement results. Certain minimum requirements for devices that monitor temperature, density, and pressure are discussed in this section. Most system hardware, such as non-control valves, vents, and manifolding, is not discussed in this section. API reaffirmed the standard without substantive change in August 2015. This document is currently incorporated by reference in § 250.198(e)(22). BSEE is updating the incorporation by reference in the regulations by acknowledging the 2015 reaffirmation, renumbering the regulatory citation to § 250.198(e)(1)(v)(D), and adding an express reference to this standard in § 250.1202(a)(2)(xvi) to clarify the longstanding use of this document already incorporated in the current regulations.

15. API Manual of Petroleum Measurement Standards Chapter 5—Metering, Section 5—Fidelity and Security of Flow Measurement Pulsed-Data Transmission Systems, Second Edition, August 2005; Reaffirmed August 2015

The recommendations set forth in this publication are concerned only with the fidelity and security of pulsed-data, cabled transmission systems between a flow meter or flow meter transducer and a remote totalizer. API reaffirmed the standard without substantive change in August 2015. This document is currently incorporated by reference in § 250.198(e)(23). BSEE is updating the incorporation by reference in the regulations by acknowledging the 2015 reaffirmation, renumbering the regulatory citation to § 250.198(e)(1)(v)(E), and adding an express reference to this standard in § 250.1202(a)(2)(xvii) to clarify the longstanding use of this document already incorporated in the current regulations.

16. API Manual of Petroleum Measurement Standards Chapter 5.8—Measurement of Liquid Hydrocarbons by Ultrasonic Flow Meters, Second Edition, November 2011, Errata February 2014, Reaffirmed May 2017

This document defines the application criteria for Ultrasonic Flow Meters (UFMs) and addresses the appropriate considerations regarding the liquids to be measured. Also, this document addresses the installation, operation, and maintenance of UFMs in liquid hydrocarbon service. This document pertains only to spool type, two or more path ultrasonic flow meters with permanently affixed transducer assemblies. While this document was specifically written for custody transfer measurement, other acceptable applications may include allocation measurement, check meter measurement, and leak detection measurement. The Second Edition updated the normative references and the sections on meter performance, accuracy, and repeatability. The title of this standard also changed from API MPMS Chapter 5, Section 8 to API MPMS Chapter 5.8. This document is currently incorporated by reference in § 250.198(e)(25). BSEE is updating the incorporation by reference from the First to the Second Edition, acknowledging the 2017 reaffirmation ( printed page 35308) and 2011 Errata, renumbering the regulatory citation to § 250.198(e)(1)(v)(G), and updating the references to this standard in § 250.1202(a)(2)(xix) and (a)(3)(iii) to reflect the new name of the standard.

17. API Manual of Petroleum Measurement Standards Chapter 6.1—Lease Automatic Custody Transfer (LACT) Systems, Second Edition, May 1991, Addendum 1 August 2020

This publication describes the metering function of a LACT unit. LACT equipment includes a meter (either displacement or turbine), a proving system (either fixed or portable), devices for determining temperature and pressure and for sampling the liquid, and a means of determining non-merchantable oil. Many of the aspects of the metering function of a LACT unit are considered at length in other parts of this manual and are referenced in paragraph 6.1.4. The title of this standard changed from API MPMS Chapter 6, Section 1 to API MPMS Chapter 6.1, and the 2020 Addendum added information on determining normal operating conditions. This document is currently incorporated by reference in § 250.198(e)(26). BSEE is updating the incorporation by reference in the regulations by acknowledging the 2020 addendum, renumbering the regulatory citation to § 250.198(e)(1)(vi)(A), updating the reference to this standard to reflect the new name of the standard, and adding an express reference to this standard in § 250.1202(a)(2)(xx) to clarify the longstanding use of this document already incorporated in the current regulations.

18. API Manual of Petroleum Measurement Standards Chapter 7.1—Temperature Determination-Liquid-in-Glass Thermometers, Second Edition, August 2017

API MPMS Chapter 7.1 describes the methods, equipment, and procedures for manually determining the temperature of liquid petroleum and petroleum products under both static and dynamic conditions with liquid-in-glass thermometers. API MPMS Chapter 7.1 is specific to liquid-in-glass thermometers. Further, Chapter 7.1 discusses temperature measurement requirements in general for custody transfer, inventory control, and marine measurements. The actual method and equipment selected for temperature determination are left to the agreement of the parties involved. The manual method covers non-pressurized tanks and non-pressurized marine vessels and gas-blanketed tanks and gas-blanketed marine vessels. It does not cover hydrocarbons under pressures in excess of 21 kPa (3 psi gauge) or cryogenic temperature measurement, unless equipped with a thermowell.

API MPMS Chapters 7.1, 7.2, 7.3, and 7.4 supersede API MPMS Chapter 7, Temperature Determination, First Edition, June 2001, which is currently incorporated by reference at § 250.198(e)(29). API has withdrawn API MPMS Chapter 7. BSEE is removing API MPMS Chapter 7 from the regulations and incorporating by reference API MPMS Chapter 7.1 for the first time into the regulations at § 250.198(e)(1)(vii)(A). BSEE is also adding an express reference to this standard in § 250.1202(a)(2)(xxiii).

19. API Manual of Petroleum Measurement Standards Chapter 7.3—Temperature Determination—Temperature Determination—Fixed Automatic Tank Temperature Systems, Second Edition, October 2011, Reaffirmed September 2021

API MPMS Chapter 7.3 describes the methods, equipment, and procedures for determining the temperature of petroleum and petroleum products under static conditions by the use of an automatic method. Automatic temperature measurement is discussed for custody transfer and inventory control for both onshore and marine measurement applications. Temperatures of hydrocarbon liquids under static conditions can be determined by measuring the temperature of the liquid at specific locations. Examples of where static temperature determination is required include storage tanks, ships, and barges. The application of this standard is restricted to automatic methods for the determination of temperature using fixed automatic tank thermometer (ATT) systems for hydrocarbons having a Reid Vapor Pressure at or below 101.325 kPa (14.696 psia).

As previously mentioned, API MPMS Chapters 7.1, 7.2, 7.3, and 7.4 supersede API MPMS Chapter 7, Temperature Determination, First Edition, June 2001, which is currently incorporated by reference at § 250.198(e)(29). API has withdrawn API MPMS Chapter 7. BSEE is removing API MPMS Chapter 7 from the regulations and incorporating by reference API MPMS Chapter 7.3 for the first time into the regulations at § 250.198(e)(1)(vii)(B). BSEE is also adding an express reference to this standard in § 250.1202(a)(2)(xxiv).

20. API Manual of Petroleum Measurement Standards Chapter 8.1—Standard Practice for Manual Sampling of Petroleum and Petroleum Products, Sixth Edition, September 2022

This practice covers procedures and equipment for manually obtaining samples of liquid petroleum and petroleum products, crude oils, and intermediate products from the sample point into the primary container. Procedures are also included for the sampling of free water and other heavy components associated with petroleum and petroleum products. This practice also addresses the sampling of semi-liquid or solid-state petroleum products. This practice provides additional specific information about sample container selection, preparation, and sample handling. This practice does not cover sampling of electrical insulating oils and hydraulic fluids. If sampling is for the precise determination of volatility, use Practice D5842 (API MPMS Chapter 8.4) in conjunction with this practice. For sample mixing and handling, refer to Practice D5854 (API MPMS Chapter 8.3). The title of this section changed from API MPMS Chapter 8, Section 1 to API MPMS Chapter 8.1, and the Sixth Edition added sections on health and safety precautions, sampling requirements, considerations, and procedures, as well as instructions for special products. This document is currently incorporated by reference in § 250.198(e)(30). BSEE is updating the incorporation by reference in the regulations by updating the reference from the Third Edition to the Sixth Edition, renumbering the regulatory citation to § 250.198(e)(1)(viii)(A), updating the reference to this standard to reflect the new name of the standard, and adding express references to this standard in § 250.1202(a)(2)(xxv) and § 250.1202(k)(1) to clarify the longstanding use of this document already incorporated in the current regulations.

21. API Manual of Petroleum Measurement Standards Chapter 8.2—Standard Practice for Automatic Sampling of Liquid Petroleum and Petroleum Products, Sixth Edition, September 2022

This document describes general procedures and equipment for automatically obtaining samples of liquid petroleum and petroleum products, crude oils, and intermediate products from the sample point into the primary container. This practice also provides additional specific information about sample container selection, ( printed page 35309) preparation, and sample handling. If sampling is for the precise determination of volatility, use Practice D5842 (API MPMS Chapter 8.4) in conjunction with this practice. For sample mixing and handling, refer to Practice D5854 (API MPMS Chapter 8.3). This practice does not cover sampling of electrical insulating oils and hydraulic fluids. Combining values from the two systems may result in non-conformance with the standard. This standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade Committee. The title of this standard changed from API MPMS Chapter 8, Section 2 to API MPMS Chapter 8.2. The Sixth Edition added representative sampling components and performance criteria. This document is currently incorporated by reference in § 250.198(e)(31). BSEE is updating the incorporation by reference in the regulations by updating the reference from the Second Edition to the Sixth Edition, renumbering the regulatory citation to § 250.198(e)(1)(viii)(B), updating the reference to this standard to reflect the new name of the standard, and adding express references to this standard in § 250.1202(a)(2)(xxvi), § 250.1202(b)(4)(i), and § 250.1202(k)(1) to clarify the longstanding use of this document already incorporated in the current regulations.

22. API Manual of Petroleum Measurement Standards Chapter 8.3—Standard Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products, Second Edition, September 2019

This practice covers handling, mixing, and conditioning procedures that are required to ensure that a representative sample of the liquid petroleum or petroleum product is delivered from the primary sample container or other container or both into the analytical apparatus or into intermediate containers. Appendix X1 in this document details the background information on the development of Table 1 used in performance testing. Appendix X2 provides guidance in the acceptance testing for water in crude oil. Appendix X3 provides a guide for materials of sample containers. Appendix X4 provides a summary of recommended mixing procedures. Appendix X5 provides a flow chart for sample container/mixing system acceptance test. The Second Edition added text on labeling, transport, mixing, sample integrity, storage, preservation, and audit. BSEE is incorporating by reference this standard for the first time into the regulations at § 250.198(e)(1)(viii)(C) and adding a reference to this standard in § 250.1202(a)(2)(xxvii).

23. API Manual of Petroleum Measurement Standards Chapter 9.1—Standard Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method, Third Edition, December 2012, Reaffirmed May 2017

This test method covers the laboratory determination of the density, relative density, or API gravity of crude petroleum, petroleum products, or mixtures of petroleum and nonpetroleum products normally handled as liquids and having a Reid vapor pressure of 101.325 kPa (14.696 psi) or less. The relevant test method involves using a glass hydrometer in conjunction with a series of calculations. Values are determined at existing temperatures and corrected to 15°C or 60 °F by means of a series of calculations and international standard tables. The title of this standard changed from API MPMS Chapter 9, Section 1 to API MPMS Chapter 9.1, and the newer ( i.e., third) edition includes information on procedures, reporting, and precision and bias. The Third Edition was reaffirmed in May 2017. This document is currently incorporated by reference in § 250.198(e)(32). BSEE is updating the incorporation by reference from the 2002 Second Edition to the 2012 Third Edition, acknowledging the 2017 reaffirmation, renumbering the regulatory citation to § 250.198(e)(1)(ix)(A), and adding an express reference to this standard in § 250.1202(a)(2)(xxviii) to clarify the longstanding use of this document already incorporated in the current regulations.

24. API Manual of Petroleum Measurement Standards Chapter 9.2—Standard Test Method for Density or Relative Density of Light Hydrocarbons by Pressure Hydrometer, Fourth Edition, November 2022

This test method covers the determination of the density or relative density of light hydrocarbons including liquefied petroleum gases (LPG) having Reid vapor pressures exceeding 101.325 kPa (14.696 psi). The prescribed apparatus should not be used for materials having vapor pressures higher than 1.4 MPa (200 psi) at the test temperature. This pressure limit is dictated by the type of equipment. Higher pressures can apply to other equipment designs. The initial pressure hydrometer readings obtained are uncorrected hydrometer readings and not density measurements. Readings are measured on a hydrometer at either the reference temperature or at another convenient temperature, and readings are corrected for the meniscus effect, the thermal glass expansion effect, alternate calibration temperature effects, and to the reference temperature by means of calculations and Adjunct to D1250 Guide for Petroleum Measurement Tables (API MPMS Chapter 11.1) or API MPMS Chapter 11.2.4 (GPA TP-27), as applicable. The Fourth Edition includes distinguishing mandatory information and amends the referenced documents section, and the title of this standard changed from API MPMS Chapter 9, Section 2 to API MPMS Chapter 9.2. This document is currently incorporated by reference in § 250.198(e)(33). BSEE is updating the incorporation by reference from the 2003 Second Edition to the 2022 Fourth Edition, renumbering the regulatory citation and updating the reference to this standard in the new § 250.198(e)(1)(ix)(B) to reflect the new name of the standard, and adding an express reference to this standard in § 250.1202(a)(2)(xxix) to clarify the longstanding use of this document already incorporated in the current regulations.

25. API Manual of Petroleum Measurement Standards Chapter 9.4—Continuous Density Measurement Under Dynamic (Flowing) Conditions, First Edition, January 2018

This document covers the continuous on-line determination and application of flowing liquid densities for custody transfer. This document covers liquid and dense phase fluids, including natural gas liquids, refined products, chemicals, crude oil, and other liquid products commonly encountered in the petroleum industry. This document does not apply to the density measurement of natural gas, liquified natural gas, multiphase mixtures, semi-solid liquids such as asphalt, and solids such as coke and slurries. This standard also provides criteria and procedures for designing, installing, operating, and proving continuous on-line density measurement systems for custody transfer. This standard also discusses the different levels and requirements of accuracy for various applications. The API withdrew API MPMS Chapter 14—Natural Gas Fluids Measurement, Section 6— Continuous Density Measurement, and superseded it with ( printed page 35310) API MPMS Chapter 9.4. Thus, as described in the proposed rule, BSEE is removing API MPMS Chapter 14, Section 6 from existing §  250.198(e)(51). BSEE is also incorporating by reference API MPMS Chapter 9.4 for the first time into the regulations at § 250.198(e)(1)(ix)(C) and adding a reference to this standard in § 250.1202(a)(2)(xxx).

26. API Manual of Petroleum Measurement Standards Chapter 10.2—Standard Test Method for Water in Crude Oil by Distillation, Fifth Edition, December 2022

This test method covers the determination of water in crude oil by distillation. The values stated in the International System of Units (SI units) are to be regarded as standard. No other units of measurement are included in this standard. The Fifth Edition accumulated references to ASTM documents and API documents associated terms and terminology along with related text. The title of this standard also changed from API MPMS Chapter 10, Section 2 to API MPMS Chapter 10.2. This document is currently incorporated by reference in § 250.198(e)(35). BSEE is updating the incorporation by reference from the 2007 Second Edition to the 2022 Fifth Edition, renumbering the regulatory citation to § 250.198(e)(1), updating the reference to this standard in the new § 250.198(e)(1)(x)(B) to reflect the new name of the standard, and adding an express reference to this standard in § 250.1202(a)(2)(xxxii) to clarify the longstanding use of this document already incorporated in the current regulations.

27. API Manual of Petroleum Measurement Standards Chapter 10.3—Standard Test Method for Water and Sediment in Crude Oil by the Centrifuge Method (Laboratory Procedure), Fifth Edition, December 2022

This test method describes the laboratory determination of water and sediment in crude oils by means of the centrifuge procedure. This centrifuge method for determining water and sediment in crude oils is not entirely satisfactory. The amount of water detected is almost always lower than the actual water content. When a highly accurate value is required, the revised procedures for water by distillation, Test Method D4006 (API MPMS Chapter 10.2) (Note 1), and sediment by extraction, Test Method D473 (API MPMS Chapter 10.1), must be used. Test Method D4006 (API MPMS Chapter 10.2) has been determined to be the preferred and most accurate method for the determination of water. The values stated in SI units are to be regarded as standard. The Fifth Edition provides additional references to ASTM documents and API documents, mandatory and nonmandatory documents, test methods and associated terms and terminology, and additional information on constraints. The title of this standard also changed from API MPMS Chapter 10, Section 3 to API MPMS Chapter 10.3. This document is currently incorporated by reference in § 250.198(e)(36). BSEE is updating the incorporation by reference from the 2008 Third Edition to the 2022 Fifth Edition, renumbering the regulatory citation to § 250.198(e)(1)(x)(C), updating the reference to this standard to reflect the new name of the standard, and adding an express reference to this standard in § 250.1202(a)(2)(xxxiii) to clarify the longstanding use of this document already incorporated in the current regulations.

28. API Manual of Petroleum Measurement Standards Chapter 10.4—Determination of Water and/or Sediment in Crude Oil by the Centrifuge Method (Field Procedure), Fifth Edition, August 2020

This document describes the field centrifuge method for determining both sediment and water or sediment only in crude oil. This method may not always produce the most accurate results, but it is considered the most practical method for field determination of sediment and water. This method may also be used for field determination of sediment. When a higher degree of accuracy is required, the laboratory procedure described in API MPMS Ch. 10.3, Standard Test Method for Water and Sediment in Crude Oil by the Centrifuge Method (Laboratory Procedure) (ASTM D4007); API MPMS Chapter 10.2, Standard Test Method for Water in Crude Oil by Distillation (ASTM D4006); or API MPMS Chapter 10.9, Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration (ASTM D4928); and the procedure described in API MPMS Chapter 10.1, Standard Test Method for Sediment in Crude Oils and Fuel Oils by the Extraction Method (ASTM D473) should be used. The Fifth Edition amended the text concerning procedures, calculations, and reporting related to centrifuge tube spin calculations, test procedures, and test reading requirements. The title of this standard also changed from API MPMS Chapter 10, Section 4 to API MPMS Chapter 10.4. This document is currently incorporated by reference in § 250.198(e)(37). BSEE is updating the incorporation by reference from the 1999 Third Edition to the 2020 Fifth Edition, renumbering the regulatory citation and updating the reference to this standard to reflect the new name in the new § 250.198(e)(1)(x)(D), and adding an express reference to this standard in § 250.1202(a)(2)(xxxiv) to clarify the longstanding use of this document already incorporated in the current regulations.

29. API Manual of Petroleum Measurement Standards Chapter 10.9—Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration, Third Edition, May 2013, Reaffirmed June 2018

This test method covers the determination of water in the range from 0.02 to 5.00 mass or volume % in crude oils. Mercaptan (RSH) and sulfide (S− or H2S) as sulfur are known to interfere with this test method, but at levels of less than 500 μ/g [ppm(m)], the interference from these compounds is insignificant. This test method can be used to determine water in the 0.005 to 0.02 mass % range, but the effects of the mercaptan and sulfide interference at these levels has not been determined. For the range 0.005 to 0.02 mass %, there is no precision or bias statement. This test method is intended for use with standard commercially available coulometric Karl Fischer reagent. The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. The Third Edition was updated with modern terminology to bring content into compliance with existing practices. The title of this standard also changed from API MPMS Chapter 10, Section 9 to API MPMS Chapter 10.9. This document is currently incorporated by reference in § 250.198(e)(38). BSEE is updating the incorporation by reference from the 2002 Second Edition to the 2013 Third Edition, renumbering the regulatory citation and updating the reference to this standard in the new § 250.198(e)(1)(x)(E) to reflect the new name of the standard, and adding an express reference to this standard in § 250.1202(a)(2)(xxxv) to clarify the longstanding use of this document already incorporated in the current regulations. ( printed page 35311)

30. API Manual of Petroleum Measurement Standards Chapter 11—Physical Properties Data, Section 1—Temperature and Pressure Volume Correction Factors for Generalized Crude Oils, Refined Products, and Lubricating Oils, 2004 Edition, May 2004, Addendum 1 September 2007, Addendum 2 May 2019

This standard provides the algorithm and implementation procedure for the correction of temperature and pressure effects on density and volume of liquid hydrocarbons which fall within the categories of crude oil, refined products, or lubricating oils. Natural gas liquids and liquid petroleum gases are excluded from consideration in this standard. The combination of density and volume correction factors for both temperature and pressure are collectively referred to in this standard as a Correction for Temperature and Pressure of a Liquid. The temperature portion of this correction is termed the Correction for the Effect of Temperature on Liquid, also historically known as Volume Correction Factor. The pressure portion is termed the Correction for the Effect of Pressure on Liquid. This standard includes a 2019 Addendum that added 33 pages concerning compressibility, volume corrections, new terms, gauge pressure, and procedures. This document is currently incorporated by reference in § 250.198(e)(41). BSEE is updating the incorporation by reference by acknowledging the 2019 Addendum, renumbering the regulatory citation of the incorporation by reference to § 250.198(e)(1)(xi)(B), and maintaining the references to this standard at § 250.1202(a)(2)(xxxvi), (a)(3)(iv), (g)(2), and (l)(4)(v).

31. API Manual of Petroleum Measurement Standards Chapter 12.2—Calculation of Petroleum Quantities Using Dynamic Measurement Methods and Volumetric Correction Factors, Second Edition, July 2021

API MPMS Chapter 12.2 (2021) provides standardized calculation methods for the quantification of liquids, regardless of the point of origin or destination or the units of measure required by governmental customs or statute. The criteria contained in this document allow different entities using various computer languages on different computer hardware (or manual calculations) to arrive at output results within a defined tolerance within this document, using the same input data. The document specifies the equations for computing correction factors, rules for rounding, calculation sequence, and discrimination levels to be employed in the calculations. The intent of this document is to serve as a rigorous standard regarding the quantification of petroleum quantities. This document also covers multiple calculations as required by dynamic, online, integrated, continuous flow measurement.

BSEE had proposed to remove API MPMS Chapter 12, Section 2, parts 1, 2, and 3 from the regulations since API MPMS Chapter 12.2 supersedes these three standards and API withdrew these three standards. However, as discussed later when discussing the summary of comments related to API MPMS Chapter 12.2, BSEE is delaying the compliance date of API MPMS Chapter 12.2 as it pertains to existing measurement systems on the OCS to August 11, 2031. During this time, measurement systems on the OCS in existence prior to August 10, 2026 may comply with API MPMS Chapter 12, Section 2, Part 1, API MPMS Chapter 12, Section 2, Part 2, and API MPMS Chapter 12, Section 2, Part 3 in lieu of API MPMS Chapter 12.2, but must comply with API MPMS Chapter 12.2 no later than August 11, 2031. Therefore, BSEE will not remove these standards from the regulations and will renumber them to § 250.198(e)(1)(xii)(A) to (C). However, measurement systems on the OCS in existence prior to August 10, 2026 must be in compliance with API MPMS Chapter 12.2 by August 11, 2031. All new measurement systems approved after August 10, 2026 must comply with API MPMS Chapter 12.2. BSEE is incorporating by reference API MPMS Chapter 12.2 for the first time into the regulations at § 250.198(e)(1)(xii)(E) and adding a reference to this standard in § 250.1202(a)(2)(xxxviii).

32. API Manual of Petroleum Measurement Standards Chapter 14.1—Collecting and Handling of Natural Gas Samples for Analysis by Gas Chromatography, Eighth Edition, September 2022

This standard provides comprehensive guidelines and procedures for properly extracting, collecting, conditioning, and handling a sample from a flowing natural gas stream at or above its dew point temperature and that represents the composition of the vapor-phase portion of the source fluid. This standard considers spot, composite, continuous, online, and mobile sampling systems and does not include sampling of liquid or multiphase streams. BSEE is incorporating by reference the Eighth Edition of API MPMS Chapter 14.1 for the first time into the regulations at § 250.198(e)(1)(xiii)(A) and adding a reference to this standard in § 250.1203(b)(2)(x).

33. API Manual of Petroleum Measurement Standards Chapter 14.3.1—Orifice Metering of Natural Gas and Other Related Hydrocarbon Fluids—Concentric, Square-Edged Orifice Meters, Part 1: General Equations and Uncertainty Guidelines, Fourth Edition, September 2012, Errata July 2013, Reaffirmed September 2017

This standard provides a single reference for engineering equations, uncertainty, estimations, construction, and installation requirements, and standardized implementation recommendations for the calculation of flow rate through concentric, square-edged, flange-tapped orifice meters. Both U.S. customary and SI units are included. The standard is organized into four parts. Parts 1, 2, and 4 apply to the measurement of any Newtonian fluid in the petroleum and chemical industries. Part 3 focuses on the application of parts 1, 2, and 4 to the measurement of natural gas. The Fourth Edition made changes to equations to bring them into conformance with more recent practice. An Errata was made in 2013 and the standard was reaffirmed in 2017. The title of this standard also changed from API MPMS Chapter 14, Section 3, Part 1 to API MPMS Chapter 14.3.1. BSEE is updating the incorporation by reference from the 1990 Third Edition to the 2012 Fourth Edition, acknowledging the 2013 Errata and 2017 reaffirmation, renumbering the regulatory citation and updating the reference to this standard in the new § 250.198(e)(1)(xiii)(B) to reflect the new name of the standard, and adding an express reference to this standard in § 250.1203(b)(2)(xi) to clarify the longstanding use of this document already incorporated in the current regulations.

34. API Manual of Petroleum Measurement Standards Chapter 14.3.2—Orifice Metering of Natural Gas and Other Related Hydrocarbon Fluids—Concentric, Square-Edged Orifice Meters, Part 2: Specification and Installation Requirements, Fifth Edition, March 2016, Errata 1, March 2017, Errata 2, January 2019

This publication outlines the specification and installation requirements for the measurement of single-phase, homogenous Newtonian fluids using concentric, square-edged, flange-tapped orifice meters. It provides specifications for the construction and installation of orifice plates, meter tubes, and associated fittings when designing metering facilities using orifice meters. The Fifth Edition made ( printed page 35312) changes concerning normative references, specifications, considerations, and installation requirements. Two Errata were made in 2017 and in 2019, and the title of this standard also changed from API MPMS Chapter 14, Section 3, Part 2 to API MPMS Chapter 14.3.2. This document is currently incorporated by reference in § 250.198(e)(48). BSEE is updating the incorporation by reference from the 2000 Fourth Edition to the 2016 Fifth Edition, acknowledging the 2017/2019 Errata, renumbering the regulatory citation and updating the reference to this standard in the new § 250.198(e)(1)(xiii)(C) to reflect the new name of the standard, and adding an express reference to this standard in § 250.1203(b)(2)(xii) to clarify the longstanding use of this document already incorporated in the current regulations.

35. API Manual of Petroleum Measurement Standards Chapter 14.3.3—Orifice Metering of Natural Gas and Other Related Hydrocarbon Fluids—Concentric Square-Edged Orifice Meters, Part 3: Natural Gas Applications, Fourth Edition, November 2013, Reaffirmed June 2021

This standard was developed as an application guide for the calculation of natural gas flow through a flange-tapped, concentric orifice meter, using the U.S. customary inch-pound system of units. It also provides practical guidelines for applying MPMS 14.3.1 and MPMS 14.3.2 to the measurement of natural gas. The Fourth Edition made changes in the applicability of the use of standard conditions and added functionality to the flow equations. The title of this standard changed from API MPMS Chapter 14, Section 3, Part 3 to API MPMS Chapter 14.3.3. API MPMS Chapter 14.3.3 was reaffirmed in 2021. This document is currently incorporated by reference in § 250.198(e)(49). BSEE is updating the incorporation by reference from the Third Edition to the 2013 Fourth Edition, acknowledging the 2021 reaffirmation, renumbering the regulatory citation and updating the reference to this standard in the new § 250.198(e)(1)(xiii)(D) to reflect the new name of the standard, and adding an express reference to this standard in § 250.1203(b)(2)(xiii) to clarify the longstanding use of this document already incorporated in the current regulations.

36. API Manual of Petroleum Measurement Standards Chapter 20—Allocation Measurement, Section 1-Allocation Measurement, First Edition, September 1993, Addendum 1 January 2013, Addendum 2 November 2016, Addendum 3 December 2017, Reaffirmed June 2024

This standard provides design and operating guidelines for liquid and gas allocation measurement systems. It includes recommendations for metering, static measurement, sampling, proving, calibrating, and calculating procedures. API MPMS Chapter 20.3, First Edition, which BSEE is incorporating by reference in § 250.198(e)(1), supersedes certain sections of API MPMS Chapter 20, Section 1, including sections 1.16.1, 1.16.3, 1.16.3.1, 1.16.3.2, and 1.16.3.3. An addendum was made to the First Edition in 2013, 2016, and 2017, which addressed measurement, calibration, equipment, and testing. The First Edition was reaffirmed in June 2024. This document is currently incorporated by reference in § 250.198(e)(53). BSEE is updating the incorporation by reference by acknowledging the addenda and reaffirmation, renumbering the regulatory citation to § 250.198(e)(1)(xiv)(A), excluding sections 1.16.1, 1.16.3, 1.16.3.1, 1.16.3.2, and 1.16.3.3 of the First Edition from the incorporation by reference, and adding an express reference to this standard in §§ 250.1202(a)(2)(xxxix) and 250.1203(b)(2)(xvi) to clarify the longstanding use of this document already incorporated in the current regulations.

37. API Manual of Petroleum Measurement Standards Chapter 20.3—Measurement of Multiphase Flow, First Edition January 2013; Reaffirmed October 2018

This publication addresses multiphase flow measurement in the production environment, upstream of the custody transfer (single-phase) measurement point, where allocation measurement for onshore, offshore, or subsea is applied. For other multiphase flow measurement applications such as reservoir management, well tests, and flow assurance, the standard can be used as a reference or guide. However, the focus of this standard is on those applications where the accuracy of multiphase flow measurement for allocation systems is required. This document refers to existing standards and RPs to supplement the guidance it provides in this subject area. The document addresses principles used in multiphase flow measurement, multiphase metering types and classifications, assessment of expected performance, and in selecting and operating multiphase measurement systems. It addresses operational requirements or constraints, including expectations for flow meter acceptance, calibration criteria, flow loop and in situ verifications, and other guidance specific to different multiphase flow metering applications. The document does not address specific meter configurations.

API MPMS Chapter 20.3 supersedes API RP 86, Recommended Practice for Measurement of Multiphase Flow, September 2005, located in the existing regulations at § 250.198(e)(76). API RP 86 was a document that provided best practices as of 2005. API MPMS Chapter 20.3 provides advances in multiphase flow measurement. BSEE is removing API RP 86 from the regulations and incorporating by reference API MPMS Chapter 20.3 for the first time into the regulations at § 250.198(e)(1)(xiv)(B) and adding a reference to this standard in § 250.1203(b)(2)(xvii).

38. API Manual of Petroleum Measurement Standards Chapter 20.5—Recommended Practice for Application of Production Well Testing in Measurement and Allocation, First Edition, December 2017; Errata 1, August 2023

This publication establishes a framework to conduct and apply production well testing for well rate determination in measurement and allocation. Production well testing addressed in this document refers to measurement of gas, oil, and water quantities from a single well during a specified length of time under controlled operational conditions. The intent of this document is to provide operators with a consistent and transparent approach for conducting, applying, and managing production well testing within an upstream measurement and allocation system. It is not intended to prescribe a particular production well test method, or particular application of production well test data use in allocation. This document provides recommendations and guidelines for the application of production well testing in production measurement and allocation. The recommendations and guidelines apply to conducting a production well test, calculating production well test volumes and rates, and the application of production well test data for use in measurement and allocation. This includes production well testing preparation, initiation, measurement, validation, and volume and rate ( printed page 35313) calculations for separator, multiphase flow meter, and tank production well test systems. Additionally, this document addresses the proration of production well test results for use in allocation, the application of production well tests for validation and update of well flow models and virtual flow metering, and the adjustment of gas well continuous measurement results with production well test data. This document also provides recommendations and guidelines for the application of well flow modeling and virtual flow metering in production measurement and allocation. This document supersedes sections 1.7.2.2.2, 1.11.1, 1.16.3.2, 1.16.3.3, 1.16.5.1, and Appendix J of API MPMS Chapter 20.1. BSEE is incorporating by reference this standard for the first time into the regulations at § 250.198(e)(1)(xiv)(C) and adding a reference to this standard in § 250.1204(b)(1).

39. API Recommended Practice 2A-WSD—Planning, Designing, and Constructing Fixed Offshore Platforms—Working Stress Design, Twenty-second Edition, November 2014; Reaffirmed September 2020

This RP is based on global industry best practices and serves as a guide for those who are concerned with the design and construction of new fixed offshore platforms and for the relocation of existing platforms used for the drilling, development, production, and storage of hydrocarbons in offshore areas. Specific guidance for hurricane conditions in U.S. offshore areas, previously provided in API RP 2A-WSD, Twenty First Edition, Section 2, is now provided in API RP 2MET. Specific guidance for earthquake loading in U.S. offshore areas, previously provided in the API RP 2A-WSD, Twenty First Edition, Section 2, is now provided in API 2EQ. Specific guidance for soil and foundation considerations in offshore areas, previously provided in API RP 2A-WSD, Twenty First Edition, Section 6, is now provided in API RP 2GEO. Specific guidance for the evaluation of structural damage, above and below water structural inspection, fitness-for-purpose assessment, risk reduction and mitigation planning, plus the process of decommissioning has been removed and is now provided in API RP 2SIM. Specific guidance for fire and blast loading, previously provided for in the API RP 2A-WSD, Twenty First Edition, Section 18, is now provided for in API 2FB. The Twenty Second Edition was reaffirmed in 2020. This document is currently incorporated by reference in § 250.198(e)(57). BSEE is updating the incorporation by reference from the 2000 Twenty First Edition to the 2014 Twenty Second Edition, acknowledging the 2020 reaffirmation, renumbering the regulatory citation to § 250.198(e)(2)(i)(A), updating the references to this standard in the existing regulations at §§ 250.901(a)(4) and (d)(3), 250.908(a), and 250.920(f).

40. API Recommended Practice 2FPS—Planning, Designing, and Constructing Floating Production Systems, Second Edition, October 2011; Reaffirmed September 2020

This document provides requirements and guidance for the structural design and/or assessment of floating offshore platforms used by the petroleum and natural gas industries to support the following functions: production, storage and/or offloading, and drilling. The Second Edition made changes to bring the document into conformance with more recent practice, namely adding as normative references five API documents (API Recommended Practice 2A-WSD, API Bulletin 2INT-MET, API Recommended Practice 2SK, API Recommended Practice 14J, 75L) and four ISO documents (13702, 19900-2002, 19901-1, 19902-2007). This document is currently incorporated by reference in § 250.198(e)(59). BSEE is updating the incorporation by reference from the 2001 First Edition to the 2011 Second Edition, renumbering the regulatory citation to § 250.198(e)(2)(i)(D), and updating the reference of this standard in the existing regulations at § 250.901(a)(5) and (d)(15).

41. API Recommended Practice 2FSIM—Floating Systems Integrity Management, First Edition, September 2019

This RP provides guidance for floating system integrity management of floating production systems, which include tension leg platforms, used by the petroleum and natural gas industries to support drilling, production, storage, and/or offloading operations. Floating production systems described in this document are governed by local regulatory requirements and recognized classification society (RCS) rules, if classed. No specific regulatory compliance or RCS requirements are restated in the document. The requirements of this document do not apply to mobile offshore drilling units or to mobile offshore units used in support of construction operations. This document does not address dynamic positioning, moorings, or risers. BSEE is incorporating by reference for the first time API RP 2FSIM into the regulations at § 250.198(e)(2)(i)(E) and adding a reference to this standard in § 250.901(a)(22) and (d)(21).

42. ANSI/API Recommended Practice 2GEO—Geotechnical and Foundation Design Considerations; First Edition, April 2011, Addendum 1, October 2014; Reaffirmed, January 2021

This document contains requirements and recommendations for those aspects of geoscience and foundation engineering that are applicable to a broad range of offshore structures, rather than to a particular structure type. Such aspects are site characterization, soil and rock characterization, design and installation of foundations supported by the seabed (shallow foundations), identification of hazards, design of pile foundations, and soil-structure interaction for risers, flowlines, and auxiliary subsea structures. Aspects of soil mechanics and foundation engineering are not addressed by the document. BSEE is incorporating by reference for the first time API RP 2GEO, including all addenda and amendments through the January 2021 reaffirmation, into the regulations at § 250.198(e)(2)(i)(F) and adding a reference to this standard in § 250.901(a)(23) and (d)(22).

43. ANSI/API Recommended Practice 2MET—Derivation of Metocean Design and Operating Conditions; Second Edition, January 2021

This standard gives requirements for the determination and use of meteorological and oceanographic (metocean) conditions for the design, construction, and operation of offshore structures of all types used in the petroleum, natural gas, and renewable energy industries. The requirements are divided into two broad types: those that relate to the determination of environmental conditions in general, together with the metocean parameters that are required to adequately describe them; and those that relate to the characterization and use of metocean parameters for the design, construction, or operation of offshore structures. BSEE is incorporating by reference for the first time API RP 2MET into the regulations at § 250.198(e)(2)(i)(H) and adding a reference to this standard in § 250.901(a)(24) and (d)(23).

44. API Recommended Practice 2MIM—Mooring Integrity Management; First Edition, September 2019

This RP provides guidance for the integrity management of mooring systems connected to a permanent floating production system used for the drilling, development, production, and/or storage of hydrocarbons in offshore ( printed page 35314) areas. The scope of this RP extends from the anchor to the connection to the floating unit ( e.g., chain stopper) and includes components critical to the mooring system ( e.g., turret bearings, fairleads, chain stoppers, anchors, suction piles). BSEE is incorporating by reference for the first time API RP 2MIM into the regulations at § 250.198(e)(2)(i)(I) and adding a reference to this standard in § 250.901(a)(25) and (d)(25).

45. API Recommended Practice 2RIM—Integrity Management of Risers From Floating Production Systems; First Edition, September 2019

This RP provides guidance for the integrity management of risers connected to a permanent floating production system used for the drilling, development, production, and storage of hydrocarbons in offshore areas. A riser is typically part of a larger subsea system extending from a wellhead, tree, manifold, template, or other structure on the seabed, to a boarding valve or pig trap on the host platform's topsides. This document addresses the integrity management of the dynamic portion of the riser system. For the purposes of this document, a riser has a top boundary that is somewhere at or above the point where it transfers load to the platform structure, and it has a lower boundary where it transfers load into a foundation, which could be a wellhead, pipeline, or subsea structure. For a top-tensioned riser, the top boundary will typically be the tensioner system hang-off point, and the bottom boundary will be the wellhead. For a steel catenary riser (SCR), the top boundary will typically be the stress joint or flexible joint. Unusual configurations, such as pull-tube steel catenary risers, merit special consideration. The top boundaries of a flexible or hybrid riser are typically a flanged connection to the riser end fitting at the top of an I-tube or J-tube, and a bend stiffener at the bottom of an I-tube or J-tube. The integrity management of the structural support for a riser on the host platform is in the scope of API RP 2FSIM, although some hybrid configurations, such as pull tubes, can require overlapping riser and structural integrity management. For risers structurally connected to the platform below the topsides, hull piping can be structurally clamped to the hull up to a boarding valve or pig launcher at the topsides. BSEE is incorporating by reference the First Edition of API RP 2RIM for the first time into the regulations at § 250.198(e)(2)(i)(L) and adding a reference to this standard in § 250.901(a)(26) and (d)(26).

46. API Recommended Practice 2SIM—Structural Integrity Management of Fixed Offshore Structures, First Edition, November 2014; Reaffirmed September 2020

This RP provides guidance for the structural integrity management of existing fixed offshore structures used for the drilling, development, production, and storage of hydrocarbons in offshore areas. However, the general principles of SIM apply to any structure. Specific guidance is provided for the evaluation of structural damage, above- and below-water structural inspection, fitness-for-purpose assessment, risk reduction, mitigation planning, and the process of decommissioning. This RP incorporates and expands on the recommendations of Section 14, “Surveys” and Section 17, “Assessment of Existing Platforms” as previously provided in API RP 2A-WSD, Twenty First Edition. See Annex A for additional information and guidelines on the provisions stated in the numbered sections of this document. The structural integrity management process provided in this RP is applicable to existing platforms installed at any location worldwide. However, the RP provides specific met-ocean criteria, which are only applicable for use in fitness-for-purpose assessments of platforms located in the U.S. Gulf of America and off the U.S. West Coast. For guidelines, RPs, and other requirements relating to planning, designing, and constructing new fixed offshore platforms, including reuse and change-in-use of existing platforms, reference should be made to the latest edition of API RP 2A-WSD. For guidelines, RPs, and other requirements relating to planning, designing, and constructing new offshore floating production systems, including reuse and change-in-use of existing floating production systems, reference should be made to the latest edition of API RP 2FPS. BSEE is incorporating by reference the First Edition of API RP 2SIM for the first time into the regulations at § 250.198(e)(2)(i)(M) and adding a reference to this standard in §§ 250.901(a)(27) and (d)(24); 250.919(b)(2) and (d); and 250.920.

47. API Recommended Practice 2SM—Design, Manufacture, Installation, and Maintenance of Synthetic Fiber Ropes for Offshore Mooring, Second Edition, July 2014; Reaffirmation, September 2020

This document applies to synthetic fiber ropes used in the form of taut leg or catenary moorings for both permanent and temporary offshore installations. This document covers the following aspects of synthetic fiber ropes: design and analysis considerations of mooring system, design criteria for mooring components, rope design, rope specification and testing, rope manufacture and quality assurance, rope handling and installation, and in-service inspection and maintenance. Application of this document to other offshore mooring applications is at the discretion of the designer and operator. This document is not intended to cover other marine applications of synthetic fiber ropes such as tanker mooring at piers and harbors, towing hawsers, mooring hawsers at single-point moorings, and tension leg platform tethers. Additionally, very little test data are available for large synthetic fiber ropes permanently deployed around fairleads and thus this document is limited to fiber ropes which span freely between end terminations. The Second Edition made changes to include applications to floating production, storage, and offloading units, floating storage units, mobile offshore drilling units, spar platforms, catenary anchor leg mooring buoys, and mobile offshore units. Further, the Second Edition added provisions for rope design, specification, and testing. The Second Edition was reaffirmed in September 2020. This document is currently incorporated by reference in § 250.198(e)(64). BSEE is updating the incorporation by reference from the 2001 First Edition to the 2014 Second Edition, acknowledging the 2020 reaffirmation, renumbering the regulatory citation to § 250.198(e)(2)(i)(O), and updating the reference of this standard in the existing regulations at §§ 250.800(c) and 250.901(a)(9) and (d)(19).

48. API Recommended Practice 2T—Planning, Designing, and Constructing Tension Leg Platforms, Third Edition, July 2010; Reaffirmed June 2015

This RP is a guide to the designer in organizing an efficient approach to the design of a tension leg platform. Emphasis is placed on participation of all engineering disciplines during each stage of planning, development, design, construction, installation, and inspection. The Third Edition made changes to include normative references, seafloor characteristics, materials-welding-corrosion protection, design criteria, safety categories, design load cases, vortex-induced vibrations, system and frequency domain modeling, material considerations, and design loads. The Third Edition was reaffirmed in June 2015. This document is ( printed page 35315) currently incorporated by reference in § 250.198(e)(65). BSEE is updating the incorporation by reference from the 1997 Second Edition to the 2010 Third Edition, acknowledging the 2015 reaffirmation, renumbering the regulatory citation to § 250.198(e)(2)(i)(P), and updating the reference of this standard in the existing regulations at § 250.901(a)(10) and (d)(18).

49. API Specification 6A—Specification for Wellhead and Christmas Tree Equipment, Twenty-First Edition, November 2018, Errata 1 April 2019, Errata 2 June 2020, Errata 3 September 2020, Errata 4 September 2021, Addendum 1 July 2020, Addendum 2, June 2021, Addendum 3, August 2022

This specification provides requirements and gives recommendations for the performance, dimensional and functional interchangeability, design, materials, testing, inspection, welding, marking, handling, storing, shipment, and purchasing of wellhead and tree equipment for use in the petroleum and natural gas industries. This specification establishes requirements for four product specification levels (PSLs), namely, PSL 1, PSL 2, PSL 3, and PSL 4, as well as a supplemental designation of PSL 3G that define different levels of technical quality requirements. The subject matter of Annexes B, C, D, E, F, G, H, I, J, K, L, and M has been arranged in a way that minimizes the impact of changes on users of this document. The Twenty-First Edition made changes concerning normative references, performance, design, materials, welding, bolting, pressure boundaries, and quality control. This edition includes Errata through 2021 and Addenda through 2022, and a title change from ANSI/API Spec. 6A to API Specification 6A. BSEE is updating the incorporation by reference from the 2010 Twentieth Edition to the 2018 Twenty First Edition, acknowledging the various Errata and Addenda made through 2022, renumbering the regulatory citationand updating the reference to this standard in the new § 250.198(e)(2)(i)(Q) to reflect the new name of the standard, and updating the reference to this standard in the existing regulations at §§ 250.518(c), 250.619(c), 250.730(a)(2)(i), 250.802(a), 250.803(a), 250.833, 250.873(b), 250.874(g)(2), and 250.1002(b)(1) and (2).

50. API Standard 6AV1—Validation of Safety and Shutdown Valves for Sandy Service, Third Edition, July 2018

This Standard establishes sandy service design validation for valves to meet Class II and Class III, but not for Class I safety valves or actuators. There are three service classes, Class I, Class II, and Class III, for API Specification 6A surface safety valves, underwater safety valves, or boarding shutdown valves. Class II is intended to validate the valve bore sealing mechanism if substances, such as sand, can be expected to cause safety or shutdown valve failure. Class III adds requirements and validation of the bonnet assembly inclusive of stem seals. The Third Edition modified the Second Edition sufficient to change the document designation from Specification to Standard. Therefore, the title of this standard changed from API Spec. 6AV1 to API Standard 6AV1. Other changes between editions included the terms and conditions, equipment specifications, validation requirements, seal tests, and procedural requirements. This document is currently incorporated by reference in § 250.198(e)(83). BSEE is updating the incorporation by reference from the 2013 Second Edition to the 2018 Third Edition, renumbering the regulatory citation and updating the reference to this standard in the new § 250.198(e)(2)(i)(R) to reflect the new name of the standard, and updating the reference to this standard in existing regulations at §§ 250.802(a) and (c), 250.833, 250.873(b), and 250.874(g)(2).

51. API Specification 6D—Specification for Valves, Twenty-Fifth Edition November 2021, Errata 1 December 2021, Errata 2 April 2022, Addendum 1 April 2023

This specification defines the requirements for the design, manufacturing, assembly, testing, and documentation of ball, check, gate, and plug valves for application in pipeline and piping systems for the petroleum and natural gas industries. If product is supplied bearing the API Monogram and manufactured at a facility licensed by API, the requirements of Annex A apply. Annexes B, C, D, E, F, G, H, I, J, K, L, M, N, and O are annexes that are used in the order listed. This specification is not applicable to subsea pipeline valves, which are covered by a separate specification, API 6DSS. This specification is not applicable to valves for pressure ratings exceeding Class 2500. The Twenty Fifth Edition made changes concerning configuration, performance, pressure and temperature ratings, design, impact tests, welding, and inspections. The title of this standard also changed from ANSI/API Spec. 6D to API Specification 6D. The Twenty Fifth Edition includes amendments and errata made through April 2022. This document is currently incorporated by reference in § 250.198(e)(85). BSEE is updating the incorporation by reference from the 2008 Twenty Third Edition to the 2021 Twenty Fifth Edition, acknowledging the amendments and errata made through 2022, renumbering the regulatory citation and updating the reference to this standard in the new § 250.198(e)(2)(i)(T) to reflect the new name of the standard, and updating the reference of this standard in existing regulations at § 250.1002(b)(1).

52. API Specification 17D—Specification for Subsea Wellhead and Tree Equipment, Third Edition, October 2021, Errata 1, December 2021, Addendum 1, December 2022

This document provides specifications for subsea wellheads, mudline wellheads, drill-through mudline wellheads, and both vertical and horizontal subsea trees. It specifies the associated tooling necessary to handle, test, and install the equipment. It also specifies the areas of design, material, welding, quality control, including factory acceptance testing, marking, storing, and shipping for individual equipment, subassemblies, and subsea tree assemblies. The Third Edition made changes concerning configuration, performance, and several design equations, and includes a 2021 Errata and 2022 Addendum. The title of this standard is also corrected from ANSI/API Specification 17D to API Specification 17D. This document is currently incorporated by reference in § 250.198(e)(91). BSEE is updating the incorporation by reference from the 2011 Second Edition to the 2021 Third Edition, acknowledging the 2021 Errata and 2022 Reaffirmation, updating the reference to this standard in § 250.198(e)(2)(i)(HH) to reflect the corrected name of the standard, and updating the reference of this standard in the existing regulations at §§ 250.518(c), 250.619(c), 250.730(a)(2)(v).

53. API Specification 17J—Specification for Unbonded Flexible Pipe, Fourth Edition, May 2014, Errata 1 September 2016, Errata 2 May 2017, Addendum 1 October 2017, Reaffirmed March 2021

This document defines the technical requirements for safe, dimensionally, and functionally interchangeable flexible pipes that are designed and manufactured to uniform standards and criteria. Minimum requirements are specified for the design, material selection, manufacture, testing, marking, and packaging of flexible pipes, with reference to existing codes and standards where applicable. API Spec ( printed page 35316) 17J applies to unbonded flexible pipe assemblies, consisting of segments of flexible pipe body with end fittings attached to both ends. The applications addressed by API Spec 17J are sweet and sour service production, including export and injection applications. Production products include oil, gas, water, and injection chemicals. API Spec 17J applies to both static and dynamic flexible pipes used as flowlines, risers, and jumpers. The Fourth Edition made changes concerning normative references, design parameters, quality assurance requirements, and testing. The Fourth Edition includes 2016 and 2017 errata, a 2017 addendum, and 2021 reaffirmation. The title of this standard has also changed from ANSI/API Spec. 17J to API Spec 17J. This document is currently incorporated by reference in § 250.198(e)(92). BSEE is updating the incorporation by reference from the 2008 Third Edition to the 2014 Fourth Edition, acknowledging the errata, addendum, and reaffirmation, renumbering the regulatory citation and updating the reference to this standard in the new § 250.198(e)(2)(i)(JJ) to reflect the new name of the standard, and updating the reference of this standard in the existing regulations at §§ 250.852(e), 250.1002(b)(4), and 250.1007(a)(4)(i)(D).

54. API Specification 20E—Alloy and Carbon Steel Bolting for Use in the Petroleum and Natural Gas Industries, Second Edition, February 2017, Addendum 1 September 2018, Addendum 2 March 2019, Errata 1 November 2021, Errata 2 May 2022

This document specifies requirements for the qualification, production, and documentation of alloy and carbon steel bolting used in the petroleum and natural gas industries. It applies when referenced by an applicable API equipment standard or otherwise specified as a requirement for compliance. An annex for supplemental requirements that may be invoked by the purchaser is included. This document establishes requirements for three bolting specification levels (BSL). These three BSL designations define different levels of technical, quality, and qualification requirements, BSL-1, BSL-2, and BSL-3. The BSLs are numbered according to the increasing levels of severe consequences if a bolt fails. Hence, the increasing BSL levels reflect increasing technical, quality, and qualification criteria appropriate to reducing the risk of failure. This document covers the following finished product forms, processes, and sizes: machined studs; machined bolts, screws, and nuts; cold formed bolts, screws, and nuts (BSL-1 only); hot formed bolts and screws <1.5 in. (38.1 mm) nominal diameter; hot formed bolts and screws > or = 1.5 in. (38.1 mm) nominal diameter; roll threaded studs, bolts, and screws <1.5 in. (38.1 mm) diameter; roll threaded studs, bolts, and screws > or = 1.5 in. (38.1 mm) diameter; hot formed nuts <1.5 in. (38.1 mm) nominal diameter; and hot formed nuts > or = 1.5 in. (38.1 mm) nominal diameter. The Fourth Edition includes addenda and errata through May 2022. BSEE is incorporating by reference API Spec 20E, including the addenda and errata made through 2022, for the first time into the regulations at § 250.198(e)(2)(i)(KK) and adding a reference to this standard in § 250.730(a)(2)(vi).

55. API Specification 20F—Corrosion-Resistant Bolting for Use in the Petroleum and Natural Gas Industries, Second Edition, May 2018, API Monogram Program Effective Date: November 1, 2018, Errata 1 October 2020, Addendum 1 November 2021

This document specifies requirements for the qualification, production, and documentation of corrosion-resistant bolting used in the petroleum and natural gas industries. It applies when referenced by an applicable API equipment standard or otherwise specified as a requirement for compliance. This document establishes requirements for two bolting specification levels (BSL). These two BSL designations define different levels of technical, quality, and qualification requirements: BSL-2 and BSL-3. The BSLs are numbered in increasing levels of requirements in order to reflect increasing technical, quality, and qualification criteria. BSL-2 and BSL-3 are intended to be comparable to BSL-2 and BSL-3 as found in API Spec 20E. BSL-1 is omitted from this standard. This document covers the following product forms, processes, and sizes: machined studs; machined bolts, screws, and nuts; cold-formed bolts, screws, and nuts with cut or cold-formed threads; hot-formed bolts and screws <1.5 in. (38.1 mm) nominal diameter; hot-formed bolts and screws ≥1.5 in. (38.1 mm) nominal diameter; roll threaded studs, bolts, and screws <1.5 in. (38.1 mm) diameter; roll threaded studs, bolts, and screws ≥1.5 in. (38.1 mm) diameter; hot-formed nuts <1.5 in. (38.1 mm) nominal diameter; and hot-formed nuts ≥1.5 in. (38.1 mm) nominal diameter. The Fourth Edition includes addenda and errata through November 2021. BSEE is incorporating by reference the Second Edition of API Spec 20F, including the addenda and errata made through 2021, for the first time into the regulations at § 250.198(e)(2)(i)(LL) and adding a reference to this standard in § 250.730(a)(2)(vii).

56. API Standard 53—Well Control Equipment Systems for Drilling Wells, Fifth Edition, December 2018

This document provides the requirements for the installation and testing of blowout prevention equipment systems on land and marine drilling rigs (barge, platform, bottom-supported, and floating). Well control equipment systems are designed with components that provide wellbore pressure control in support of well operations. The primary functions of these systems are to confine well fluids to the wellbore, provide means to add fluid to the wellbore, and allow controlled volumes to be removed from the wellbore. The Fifth Edition made changes concerning sealing components, pressure measurement, control systems, testing, and examples. This document is currently incorporated by reference in § 250.198(e)(94). BSEE is updating the incorporation by reference from the 2012 Fourth Edition to the 2018 Fifth Edition, renumbering the regulatory citation to § 250.198(e)(2)(i)(MM), and updating the reference of this standard in existing regulations at §§ 250.730(a), 250.734(a)(4), 250.735(a), 250.736(d)(1), 250.737(d)(1), and 250.739(a).

57. API Standard 2555—Method for Liquid Calibration of Tanks, First Edition, September 1966; Reaffirmed May 2014

This standard describes the procedure for calibrating tanks, or portions of tanks, that are larger than a barrel or drum by introducing or withdrawing measured quantities of liquid. This update reflects a May 2014 reaffirmation of the standard without substantive change. This document is currently incorporated by reference in § 250.198(e)(97). BSEE is updating the incorporation by reference by acknowledging the 2014 and 2023 reaffirmations, renumbering the regulatory citation to § 250.198(e)(2)(iii)(A), and adding an express reference to this standard in § 250.1202(a)(2)(xlii) to clarify the longstanding use of this document already incorporated in the current regulations. ( printed page 35317)

58. API Recommended Practice 2556—Recommended Practice for Correcting Gauge Tables for Incrustation, Second Edition, August 1993; Reaffirmed November 2023

Incrustation is defined for the purpose of this RP as any material that adheres to the internal vertical sidewall surfaces of a tank when the tank is otherwise empty. Incrustation has the same effect on tank capacity as deadwood (anything that displaces liquid inside a tank) and should be treated as such as long as it remains in the tank. The problem of deducting the volume of liquid displaced by incrustation is complicated by two of incrustation's basic and typical characteristics. First, incrustation is difficult to measure, and second, its thickness is usually variable. Some oils present no incrustation problem, but many others do, usually on a field-wide basis. The error in measurement from any one tank may be slight, but the accumulated error from an entire field or from any one tank over a period of time could be substantial. The error always has the effect of indicating too large a tank capacity; therefore, a receiving carrier cannot be expected to continually absorb the effect of these errors. The method selected to correct the error should depend upon the desired approach to accuracy of measurement.

The tables given in this RP (see Section 4) show the percent of error of measurement caused by varying thicknesses of uniform incrustation in tanks of various sizes. These tables may be used as a guide by the tank owner and the carrier to negotiate an allowance for incrustation. If it is established that incrustation is causing a substantial loss to a carrier or to any other receiver using affected tank gauges as the basis for custody transfer measurement, it is the responsibility of the tank owner to provide a tank that will permit an accurate measurement or to agree to a reasonable adjustment. This update reflects a November 2013 and a November 2023 reaffirmation of the standard without substantive change. This document is currently incorporated by reference in § 250.198(e)(80). BSEE is updating the incorporation by reference by acknowledging the 2013 and 2023 reaffirmations, renumbering the regulatory citation to § 250.198(e)(2)(iii)(B), and updated the reference to this standard in § 250.1202(a)(2)(xliii).

59. American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section VIII—Rules for Construction of Pressure Vessels; Division 1, 2021 Edition, July 1, 2021

This code gives detailed requirements for the design, fabrication, testing, inspection, and certification of both fired and unfired pressure vessels. It specifically refers to those pressure vessels that operate at pressures, either internal or external, that exceed 15 psig. Section VIII is divided into 3 sections, each of which covers different vessel specifications. Division 1 addresses the requirements for design, fabrication, inspection, testing, and certification. Division 1 contains appendices, some mandatory and some non-mandatory, that detail supplementary design criteria, nondestructive examination techniques, and inspection acceptance standards for pressure vessels. Division 1 also contains rules that apply to the use of the single ASME certification mark with the U, UM, and UV designators. The 2021 Edition made changes to bring the document into conformance with more recent practice, namely overpressure protections, permitted pressure relief devices and methods, design criteria, low temperature operation, and materials considerations. BSEE is updating the incorporation by reference of ASME Boiler and Pressure Vessel Code, Section VIII, Division 1, at § 250.198(f)(3)(i) from the 2017 Edition to the 2021 Edition and updating the reference of this standard in existing regulations at § 250.851(a)(1)(i) and (a)(3)(i).

60. ISO/IEC 17011:2017(E)—Conformity Assessment—Requirements for Accreditation Bodies Accrediting Conformity Assessment Bodies, Second Edition 2017-11

This document specifies requirements for the competence, consistent operation, and impartiality of accreditation bodies assessing and accrediting conformity assessment bodies. In the context of this document, activities covered by accreditation include, but are not limited to, testing, calibration, inspection, certification of management systems, persons, products, processes and services, provision of proficiency testing, production of reference materials, validation, and verification. The Second Edition made changes to bring the document into conformance with more recent practice. The document was revised and reorganized and an Annex A on knowledge and skills for performing accreditation activities was added. BSEE is updating the incorporation by reference of ISO/IEC 17011 at § 250.198(j)(1) from the 2004 First Edition to the 2017 Second Edition, renumbering the regulatory citation from § 250.198(j)(1) to § 250.198(k)(1), and updating the reference of this standard in existing regulations at §§ 250.1900(a), 250.1903, 250.1904(d), and 250.1922.

61. GPA Midstream Standard 2198-16—Selection, Preparation, Validation, Care and Storage of Natural Gas and Natural Gas Liquids Reference Standard Blends; Adopted as a Standard 1998; Revised August 2016

This standard covers the recommended procedures for selecting the proper Natural Gas and Natural Gas Liquids Reference Standards, preparing the standards for use, verifying the accuracy of composition as reported by the manufacturer, and the proper care and storage of those standards to ensure their integrity and longevity during use. This standard was revised in 2016. BSEE is incorporating by reference GPA standards into the regulations for the first time, including GPA Standard 2198-16 and its revision at § 250.198(j)(1)). BSEE is also adding a reference to this standard in § 250.1203(b)(2)(vii).

62. GPA Midstream Standard 2261-20—Analysis for Natural Gas and Similar Gaseous Mixtures by Gas Chromatography; Copyright 2019

This standard provides the gas processing industry with a method for determining the chemical composition of natural gas and similar gaseous mixtures using a Gas Chromatograph. The precision statements contained in this standard are based on the statistical analysis of round-robin laboratory data obtained by GPA Section B. This standard was developed by the cooperative efforts of many individuals from industry under the sponsorship of GPA Section B, Analysis and Test Methods. BSEE is incorporating by reference for the first time GPA 2261-20, as revised in 2020, into the regulations at § 250.198(j)(2)) and adding a reference to this standard in § 250.1203(b)(2)(viii).

63. GPA Midstream Standard 2286-14—Method for the Extended Analysis of Natural Gas and Similar Gaseous Mixtures by Temperature Program Gas Chromatography; Revised 2014

This standard covers the determination of the chemical composition of natural gas streams where precise physical property data of the hexanes and heavier fraction is ( printed page 35318) required. This procedure is applicable for gaseous hydrocarbon mixes, which may contain nitrogen and carbon dioxide and/or hydrocarbon complexes C1 through C14 that fall within the ranges specified therein. This standard had previously seen only minor revisions since its adoption as a technical standard in 1986. The GPA revised portions of the standard that had become obsolete and that did not reflect current industry practices. In addition, the example calculations that use GPA 2145 to reflect the 2009 revision of GPA 2145 and all calculations related to those presented in GPA 2172 were removed and referenced to GPA 2172. The most significant changes to the standard involve updates to the method to maintain consistency with current technologies. BSEE is incorporating by reference for the first time GPA 2286-14, as revised in 2014, into its regulations at § 250.198(j)(3), and adding a reference to this standard in § 250.1203(b)(2)(ix).

Availability of Incorporated Documents for Public Viewing

When a copyrighted technical industry standard is incorporated by reference into the regulations, BSEE must observe and protect that copyright. BSEE provides members of the public with website addresses where these standards may be accessed for viewing—sometimes for free and sometimes for a fee. Typically, each SDO owns the standard's copyright and decides whether to charge a fee.

The API provides free read-only online public access to about 160 key industry standards, including a broad range of technical standards. All API standards that are safety-related and that are incorporated into Federal regulations are available to the public for free viewing online in the Incorporation by Reference Reading Room at https://www.api.org/​products-and-services/​standards/​ibr-reading-room or for purchase on API's website at https://publications.api.org and https://www.api.org/​products-and-services/​standards/​purchase, respectively. In addition to the free availability of these standards for viewing on API's website, hardcopies and printable versions are available for purchase from API. The API website address to purchase standards is: https://www.api.org/​products-and-services/​standards/​purchase. We are also incorporating standards from other SDOs, including the AGA, GPA, ASME, and ISO. To purchase the copyrighted documents, the website addresses and telephone numbers are: for AGA Documents, contact Accuris at https://store.accuristech.com/​; for ASME Documents, contact the organization at 1-800-843-2763 or their website www.customercare@asme.org; and for GPA Documents, contact the organization at 1-918-493-3872 or their website www.gpamidstream.org; for ISO documents, contact the organization at +41 22 749 01 11 or their website at https://www.iso.org/​standards.html.

For the convenience of the viewing public who may not wish to purchase or view the incorporated documents online, the documents may be inspected at BSEE's offices at 1919 Smith Street, Suite 14042, Houston, Texas 77002 (phone: 1-844-259-4779), 45600 Woodland Road, Sterling, Virginia 20166 (email: regs@bsee.gov), by appointment only. An appointment is required to ensure personnel are available to accommodate requests to inspect the documents at BSEE offices and to account for competing agency obligations or concerns, including those related to public health and natural disasters. Additional information about where these documents can be inspected or purchased can be found at § 250.198, Documents incorporated by reference, or by sending a request by email to regs@bsee.gov. The other standards that appear in the amendatory text of this document were previously approved for the sections in which they appear.

II. Discussion of Public Comments on the Proposed Rule

In response to the proposed rule, BSEE received 4 sets of submitted comments containing general statements and specific comments on the standards included in the proposed rule. Comments included submittals from 1 company, 2 industry organizations (joint comments), and 2 anonymous individuals. All relevant comments are posted at the Federal eRulemaking portal: https://www.regulations.gov. To access the comments at that website, enter BSEE-2022-0005 in the Search box.

BSEE received multiple comments expressing general support for the proposed rule, including those that endorsed the Bureau's approach for undertaking this rulemaking to ensure that references to standards incorporated into regulation are kept current and, therefore, recognize the current changes in technology, materials, and safety improvements in the industry. While these commenters voiced support broadly for the rulemaking, they also disagreed with incorporating certain standards included in the proposed rule and provided suggested revisions. BSEE reviewed all comments submitted, and this section of the preamble contains brief summaries of the relevant comments, as well as BSEE's responses.

General Comments

Summary of comments related to compliance with previous editions of standards: A few commenters noted that standards are developed based on the current industry best practices and in most cases, represent forward-looking requirements for designs, equipment, and engineering systems. When incorporated by reference, standards provide requirements for engineering systems that will be designed after the date of incorporation (effective date). For infrastructure and equipment that was designed, fabricated, installed, or operated on the OCS prior to the effective date of new standard incorporation, BSEE should clarify that compliant operation is defined as operating the equipment with technical specifications meeting the requirements specified in the original basis of design and applicable standards editions used when design was performed.F

Response: BSEE does not agree with the commenters' recommendation. BSEE has addressed this comment numerous times in other rulemakings ( e.g.,83 FR 49216, 49229). It is not necessary to specify which of the updated standards, or which provisions in those standards, apply prospectively. By incorporating updated standards into this final rule, BSEE generally does not intend to require, and the standards themselves do not envision, replacement of existing facilities or equipment (that meet the applicable requirements that were in effect when the facilities or equipment were installed). The updated standards will apply to all BSEE approvals of facilities and equipment prospectively (as of the effective date of the final rule). The language of the regulations and the referenced standards will result in their application to new and existing facilities or equipment and require certain future actions ( e.g., equipment inspection, testing, removal, repair, or replacement) after this rule's effective date. After the effective date, operators must ensure that all existing facilities, equipment, and practices comply with those applicable requirements. If compliance issues arise in the future, BSEE will evaluate those issues on a case-by-case basis and where appropriate, may approve a request to use alternate procedures or equipment based on the circumstances or issues associated with each standard.

Summary of comments related to annual Incorporation by Reference (IBR) ( printed page 35319) rulemakings: A few commenters encouraged BSEE to ensure its regulations keep up with the most updated standards by actively publishing IBR rule notices on an annual basis to reflect the most recent technology and safety criteria.

Response: BSEE agrees and shares the commenters' views as to the value and importance of standards incorporated by reference into the regulations. However, the timing associated with finalizing a rule is dependent on many factors unique to each rulemaking, such as the number of standards that may be included in a particular rulemaking or the number of issues that must be addressed before finalizing a rule. BSEE strives to issue IBR rulemakings on a continuous basis.

Summary of comments related to normative references and secondary standards: A few commenters expressed dissatisfaction with BSEE's procedures for addressing secondary standards, which includes incorporating those secondary standards into the regulations. Industry standards often have normative references that include requirements to comply with other standards (referred to as secondary standards). Those requirements usually reference a specific version or edition of the secondary standard. BSEE should be aware of how compliance will be administered for standards with normative references where secondary standards with different editions are also incorporated by reference. To assure clarity of regulatory requirements, and to avoid edition conflicts, industry recommends that BSEE eliminates direct incorporation of secondary standards, when the primary standard is incorporated.

Response: BSEE understands the commenters' concerns. However, one of BSEE's core responsibilities includes enforcement of applicable laws, regulations, or other requirements that the Bureau imposes. As previously mentioned, the legal effect of incorporation by reference is that the incorporated standards become regulatory requirements. This incorporated material, like any other regulation, has the force and effect of law. Operators, lessees, and other regulated parties must comply with the documents incorporated by reference in the regulations. BSEE relies heavily on its regulations to guide its enforcement actions. Furthermore, incorporation by reference of a document or publication is limited to the version of the document or publication cited in the regulations, as required by the OFR under 1 CFR part 51. These factors weigh heavily into BSEE's overarching approach to incorporating by reference secondary standards into the regulations. BSEE did not make a change to the final rule in response to this comment and will not change its policy for incorporating by reference secondary standards into the regulations.

Summary of comment related to BSEE engagement in the standards development process: A commenter suggested that BSEE should ensure that its personnel are active and directly engaged in the open and transparent standard development process. However, BSEE should also establish internal processes to ensure that the engaged BSEE experts are sharing their knowledge of the standards with other BSEE personnel to ensure the broad internal understanding of both the content and the status of the standards and how they should be applied to the OCS.

Response: BSEE personnel are involved in the standards development process, and those individuals do, in fact, share information and knowledge with other BSEE staff (including inspectors and those responsible for permit approvals) about the content and status of recently published standards or standards under development.

Measurement-Related Comments

Summary of comments related to additional reaffirmations of standards: A few commenters noted that several oil and gas measurement-related standards referenced in the proposed rule have had additional reaffirmations made by the API. These standards include API MPMS Chapter 3.1A, API MPMS Chapter 4, Section 1, API MPMS Chapter 4.5, API MPMS Chapter 4, Section 7, API MPMS Chapter 4, Section 9 Part 2, API MPMS Chapter 5, sections 3, 4, and 5, API Standard 2552, API Standard 2555, and API RP 2556.

Response: BSEE agrees with the commenters recommended clarifications. A reaffirmed standard denotes an action taken by the API standards committee, normally within a 5-year timeframe, confirming that the information contained within the standard is still applicable and requires no change at this time. Additionally, the edition number and date of the standard does not change because of reaffirmation by the standards committee. Because a reaffirmation does not change any of the standard's provisions and does not provide any new substantive information BSEE previously made available during the public's review of the proposed rule, BSEE may make this type of change as part of the final rule. BSEE checked the most recent publications of all the standards the commenters cited as having additional reaffirmation dates and could only confirm that API RP 2556 had an additional reaffirmation date. None of the current publications in the other documents the commenters recommended updating contained the additional reaffirmation dates. In accordance 1 CFR 51.7(a)(2)(i), a publication is eligible for incorporation by reference if it is published data. The documents the commenters cited are, in fact, published. However, the publications cited by these commenters do not contain the reaffirmation dates that commenters had noted. Therefore, this final rule incorporates the new reaffirmation date of API RP 2556 only. If these standards do get published with additional reaffirmation dates, BSEE will consider updating its regulations at § 250.198 as part of a future rulemaking to acknowledge the reaffirmations. In addition, as noted in the proposed rule, BSEE is removing API Standard 2552 from the regulations because the document provided best practices as of 1966; it is now outdated and not applicable with the measurement and calibration requirements presently used. Therefore, BSEE is not accepting the commenters' recommendation on this standard either.

Summary of comments related to newer editions of or superseding standards: A few commenters recommended replacing certain standards referenced in the proposed rule with other standards that either supersede or update the edition of the standards referenced in the proposed rule. The standards the commenters recommended replacing include API MPMS Chapter 6.1, API MPMS Chapter 6, sections 6 and 7, API MPMS Chapter 12, Section 2, Part 4, API MPMS Chapter 14, Section 8, API MPMS Chapter 2, Section 2A, API MPMS Chapter 3, Section 1B, API MPMS Chapter 4, Section 6, API MPMS Ch. 20.3, API MPMS Chapter 21, Section 1, API STD 6AV2, API Spec 11D1, ANSI/API Spec 14A, API RP 14F, API RP 17H, API Spec 16A, API Spec 16C, API Spec 16D, API RP 65, API 510, API RP 90, and API Spec Q1.

Response: BSEE appreciates the clarification provided through these comments. However, the Bureau did not accept the commenters' recommendation. BSEE did not propose these superseding or newer editions of standards as part of the proposed rule. Therefore, the public was not notified and given the opportunity to review and potentially provide comments on these standards during the public comment period. BSEE will review these ( printed page 35320) standards and consider including them in future rulemakings.

Summary of comments related to API MPMS Chapter 9.4: A few commenters pointed out that BSEE should, in conjunction with its incorporation by reference of API MPMS Chapter 9.4, promote Bureau personnel ( i.e., regulators and inspectors) awareness that the standard provides the option to use online density in lieu of using the density from a sample.

Response: BSEE agrees with the commenters but did not make any changes in response to this comment. BSEE already has processes in place to ensure that its personnel are aware that the standard provides the option to use online density information. BSEE's Gulf of America Regional Office is responsible for approving the use of a continuous density measurement system at a facility measurement point (FMP). They are aware that API MPMS Chapter 9.4 provides the option to use online density in lieu of using the density from a sample. The approving official will consider it if the option is included as part of a request to use a continuous density measurement system. If the use of online density information is permitted, it will be documented in BSEE's measurement approval. The approval document will be shared with appropriate program staff at the BSEE District Office and with the Production Inspection Coordinator for use as part of a production inspection.

Summary of comments related to API MPMS Chapter 12.2: In the proposed rule, BSEE had proposed to incorporate by reference for the first time API MPMS Chapter 12.2 and remove API MPMS Chapter 12, Section 2, parts 1, 2, and 3 since API had withdrawn these three standards and replaced them with API MPMS Chapter 12.2. A few commenters noted that API MPMS Chapter 12.2 took more than 16 years to develop and reach final consensus. They requested BSEE to consider grandfathering existing measurement systems, as immediate industrywide implementation will require significant time due to limitations on manufacturer development and availability of flow computer systems.

Response: BSEE agrees with the commenter that there are limitations on the availability of equipment for existing FMPs on the OCS that will be required to comply with API MPMS Chapter 12.2 by August 10, 2026. There are currently 201 active oil royalty FMPs and 445 active royalty meters on the OCS. BSEE anticipates it will take at most 5 years for operators to assess those existing measurement systems and acquire the proper equipment to comply with API MPMS Chapter 12.2. Therefore, as part of the final rule, BSEE includes a provision delaying the compliance date for measurement systems on the OCS in existence as of August 10, 2026 that are unable to comply with API MPMS Chapter 12.2. However, those existing measurement systems must comply with API MPMS Chapter 12.2 by August 11, 2031. During that delay period, but no later than August 11, 2031, existing measurement systems may comply with API MPMS Chapter 12, Section 2, parts 1, 2, and 3 in lieu of API MPMS Chapter 12.2, but must comply with API MPMS Chapter 12.2 no later than August 11, 2031. Measurement systems on the OCS in existence prior to August 10, 2026 must be in compliance with API MPMS Chapter 12.2 by August 11, 2031. This provision does not apply to new oil royalty FMPs or royalty meters approved on the OCS, which must comply with Chapter 12.2 starting on August 10, 2026.

Summary of comments related to API MPMS Chapter 2.2E and API MPMS Chapter 2.2F: A few commenters recommended that BSEE not incorporate API MPMS Chapter 2.2E, Part 1, and API MPMS Chapter 2.2F, Part 2 as there is limited or no need to incorporate these standards by reference for tanks that are not used offshore. The commenters noted that during operator working group discussions on these standards, none of the participants used horizontal cylindrical tanks in offshore operations.

Response: BSEE agrees with the commenters' observations on the use, or the lack thereof, of horizontal cylindrical tanks on the OCS. Therefore, it is not necessary to incorporate by reference these two measurement standards into the regulations.

Summary of comments related to API MPMS Chapter 20.5: A few commenters recommended that BSEE not incorporate API MPMS Chapter 20.5 as there has been significant learning in industry since the publication of the standard, which has shown the need for a revision. The commenters recommended that BSEE wait to incorporate by reference this standard into the regulations until the standard is updated to the second edition, which will align the provisions of this standard with updates to other standards, thereby eliminating potential conflicting requirements. In lieu of incorporating by reference API MPMS Chapter 20.5 into the regulations, the commenters recommended that BSEE instead maintain provisions in current subpart K, § 250.1152.

Response: BSEE disagrees with the commenters' recommendations. Although the first edition of API MPMS Chapter 20.5, which was published over 6 years ago, is somewhat out of date, it is far more useful as a guidance document than the regulations at subpart K, § 250.1152. BSEE also notes that API reaffirmed the standard only a year ago. Also, the potential for conflicts between standards that are being updated continually will always exist and any issues can be addressed as they are identified.

Summary of comments related to API Specification 17D, API Specification 6A, and API Standard 6AV1: A few commenters recommended that, in conjunction with BSEE's proposal to update the incorporation by reference of API Specification 17D to the Third Edition, API Specification 6A to the Twenty First Edition, and API Standard 6AV1 to the Third Edition into the regulations, BSEE should remove the reference to API Specification 6A in § 250.833 Specification for underwater safety valves (USVs) and § 250.834 Use of USVs, but maintain the reference to API Standard 6AV1. The commenters explained that the previous edition of API Spec 17D, i.e., the Second Edition, required USV monogramming under the previous edition of API Specification 6A, i.e., the Second Edition. However, the updated, Third Edition of API Specification 17D allows for USVs to be monogrammed under that standard, and its monogramming requirements are the same as API Standard 6AV1. The monogramming requirements contained within the newer, Twenty First Edition of API Specification 6A are not the same as the new editions of API Specification 17D and API Standard 6AV1. Therefore, there will be conflicts in the regulations by maintaining the reference to API Specification 6A in §§ 250.833 and 250.834.

Response: BSEE disagrees with the commenters' recommendation to remove the reference to API Specification 6A in § 250.833. API Specification 6A is not mentioned in § 250.834. Sections 250.802 and 250.803 reference API Specification 6A within the context of USVs. Therefore, for consistency, it will not be appropriate to ( printed page 35321) remove the reference to 6A in § 250.833. API Specification 17D is not currently referenced in the regulations for USVs. Its reference pertains only to those regulations in part 250 that address blowout preventers. BSEE considered the option of replacing the reference of API Specification 6A in § 250.833 with API Specification 17D. However, the requirements in API Specification 17D, as it pertains to those provisions that will apply to USVs, are not as stringent and thus not as robust as the requirements in API Specification 6A. Existing regulations at § 250.801 already provide a process to forgo monogramming of safety and pollution prevention equipment, including USVs, if an operator chooses to pursue that option.

Platforms- and Structures-Related Comments

Summary of comments related to compliance with the updated edition of API RP 2A-WSD and the new API RP 2A-WSD, API RP 2MET, and API RP 2SIM standards: A commenter requested BSEE to evaluate facilities and structures under prior versions of standards that were in effect at the time the assets were originally designed and installed on the OCS. The commenter has serious concerns, in reference to the new API RP 2A, 2MET, and 2SIM standards, that structures designed, fabricated, and installed that comply with previous editions of API RP 2A-WSD will be inadvertently and overly scrutinized, which could cause unnecessary rework to platforms currently operating within their original design and/or could restrict the ability to repair or modify platforms in the future to meet business needs. Further, the commenter stated that “new structural standards dramatically change the classification, inspection, and assessment criteria of structures currently installed and compliant with applicable regulations and standards on the OCS.”

Response: BSEE does not intend to use this standard's update as a mechanism to initiate new analyses of all existing facilities and structures. However, there will be cases where BSEE will require the existing facilities to comply with newer editions of a standard. For example, as existing facilities are modified to add new wells or topsides equipment, enlarge platform deck space, or repair damage, or are replaced to extend service life, BSEE will evaluate the original facilities for structural compliance under the current version of the standard in BSEE's regulations.

Another example where BSEE will require an operator to comply with the newer edition of API RP 2A-WSD or the new API RP 2SIM for existing fixed structures will be in cases where the operator must comply with the 5-year assessment process prescribed in paragraph (e) of § 250.920 “What are the BSEE requirements for assessment of fixed platforms?” BSEE will require the operator to comply with the new standards when performing the required structural analyses under the assessment process. The new editions of API RP 2A-WSD and API RP 2SIM were published in November 2014, providing more than 9 years for industry to comply.

In the years since API RP 2A-WSD, Twenty Second Edition, was first published in 2014, BSEE has been approached numerous times by industry with requests to allow the usage API RP 2A-WSD, Twenty Second Edition, for planning, designing, and constructing fixed offshore platforms. By incorporating by reference API RP 2A-WSD, Twenty Second Edition, BSEE is aligning its regulations with the most up-to-date industry standard for the structural planning, designing, and construction of fixed offshore platforms. Avoidance of the criteria set out in the Twenty Second Edition will be ill-considered, ignore good operating practices, and dismiss advances in structural design and installation.

Industry advanced the Twenty Second Edition of API RP 2A-WSD and First Edition of API RP 2SIM 9 years ago and has become familiar with its methods and tasks. Accordingly, BSEE does not agree with the commenter that this standard should not apply to existing structures and facilities.

Summary of comments related to discrepancies between API-RP-2SIM and a 2007 Notice to Lessees (NTL): One commenter points to discrepancies between API RP 2SIM First Edition (2014) and a Notice to Lessees (NTL) issued in 2007 by MMS. The commenter says the 2014 API RP 2SIM First Edition “appears to be overly conservative and punitive as applied to fixed offshore structures designed to comply with earlier editions of API RP 2A-WSD.”

Response: NTLs are advisory documents that reflect knowledge and practices available at the time of their issuance, here 17 years ago. In contrast, standards that are incorporated by reference in BSEE regulations are the result of lengthy and systematic evaluation by industry before being adopted as rules. In November 2014, the API designated API RP 2A-WSD, Twenty Second Edition, as establishing the minimum acceptable criteria for planning, designing, and constructing fixed offshore platforms using working stress designs. API reaffirmed the Twenty Second Edition in September 2020. Industry has supported and maintained the minimum criteria in the Twenty Second Edition for most of the last decade.

Summary of comments related to ambiguous or conflicting provisions in the newer edition of API RP 2A-WSD and the new API RP 2MET and API RP 2SIM: A commenter advises BSEE that “certain vague or ambiguous provisions and/or discrepancies within a combination of new structural standards exist and should be addressed in conjunction with API subcommittee support.”

Response: Rulemaking is not the proper venue for correcting vague or ambiguous provisions in industry standards. Standard development organizations, such as API and ASME, coordinate and publish standards that are written by industry subject matter experts. Such matters should be addressed with SDOs.

Summary of comments related to Section 9 of API RP 2SIM: A commenter questions the accuracy and completeness of certain provisions of Section 9 of API RP 2SIM pertaining to assessments for metocean loading and criteria contained within that section. The commenter recommended that API address its concerns accuracy and completeness of information in Section 9 of API RP 2SIM. The commenter also requested that BSEE allow the operator to use site-specific metocean data that they acquire in preference in lieu of the requirements in Section H.9.2.2.5 of API RP 2MET, Second Edition.

Response: BSEE is not responsible for the preparation of API standards, and this rulemaking is not intended to resolve how standards are developed or interpreted among industry members. BSEE declines to adopt the commenter's request that BSEE preferentially allow operators to use site-specific metocean data that they acquire in lieu of complying with the requirements in Section H.9.2.2.5 of API RP 2MET, Second Edition. BSEE will implement the API RP 2MET, Second Edition standard, including the development of site-specific metocean criteria in accordance with the methodology in API RP 2MET, Second Edition or the use of the default metocean tables and curves within API RP 2MET, Second Edition in lieu of developing site specific metocean criteria.

Summary of comments related to API RP 2GEO: A commenter requested BSEE to verify that all methodologies outlined in API RP 2GEO are equally acceptable ( printed page 35322) to BSEE and may be utilized or applied to be compliant with either one or both such guidance documents within the discretion of operator.

Response: The API adopted, with modifications, ISO 19901-4:2003 as API RP 2GEO. Industry has supported and maintained the minimum criteria in the combination of ISO 19901-4:2003 and API RP 2GEO for over 20 years. BSEE declines to consider them as mere “guidance documents” to be used within the discretion of operators, as the commenter suggests. Such an approach would hamstring design criteria for geotechnical and foundation design considerations and ignore good operating practices achieved over the last 10 years and is not consistent with the approach prescribed by the NTTAA. BSEE also declines to identify all methodologies set out in API-RP-2GEO standard as “equally acceptable” because general methodological information is currently available in API-RP-2GEO itself.

Summary of comments related to API Bulletin 2 INT-DG and API Bulletin 2 INT-EX: A few commenters recommended that BSEE remove from the regulations the incorporation by reference to API Bulletin 2 INT-DG and API Bulletin 2 INT-EX since the proposed rule had proposed to incorporate by reference API RP 2RIM, API RP 2FSIM, API RP 2MIM, API RP 2SIM. The provisions in API Bulletin 2 INT-DG and API Bulletin 2 INT-EX have been incorporated into those four standards.

Response: BSEE appreciates the clarification and will remove API Bulletin 2 INT-DG and API Bulletin 2 INT-EX from the regulations as part of the final rule. This rule also removes API Bulletin 2INT-MET, Interim Guidance on Hurricane Conditions in the Gulf of Mexico, from the regulations since this rule incorporates by reference API RP 2MET into the regulations for the first time.

Summary of comments related to consistency between the new API RP 2SIM and newer edition of API RP 2A-WSD, and § 250.920: A few commenters noted that there are clear linkages between API RP 2A-WSD and API RP 2SIM, for example there are API RP 2A-WSD sections that direct users to provisions in 2SIM for the assessment of existing structures. The commenter stated that the update to the newer edition of API RP 2A-WSD, as well as the incorporation by reference to the new API RP 2SIM, will disrupt some of the language in § 250.920, which must be reconciled by replacing the reference to Section 17 on platform assessments and Section 15 on platform re-use in the previous edition of API RP 2A-WSD with the applicable sections in API RP 2SIM. The commenter also stated that API RP 2SIM now addresses platform assessments of existing platforms and platform re-use, which are no longer addressed in the newer edition of API RP 2A-WSD.

Response: BSEE appreciates the clarification provided by this comment and makes the appropriate changes to § 250.920. In addition, while not recommended by the commenter, BSEE updates § 250.919, which also addresses assessments of existing platforms. Details regarding the update to these regulatory sections are discussed below in Section III. Section-by-Section Summary and Responses to Comments on the Proposed Rule.

Crane-Related Comments

Summary of comments related to API Standard 2CCU: A few commenters recommended that BSEE not incorporate by reference API Standard 2CCU into the regulations, because incorporating it will make it the sole applicable standard in the regulations pertaining to operating and maintaining offshore cargo carrying units. The commenters noted that the standard was developed as guidance for the U.S. to complement other international standards. Incorporating it by reference will make 2CCU the only standard to comply with. However, there are other standards (industry and company standards) that are used in industry and meet the operational and safety goals necessary for operations. BSEE should not adopt this sole standard without further consideration of the appropriate suite of both domestic and international standards applicable in this space. The commenters urged BSEE to withdraw the current listing of 2CCU from this rule and engage in additional discussion on what could be a more appropriate approach to meet the goals sought by BSEE.

Response: BSEE agrees with the commenters and plans to conduct a broader identification and evaluation of standards, both domestic and international, that will be appropriate to incorporate by reference to ensure safe operations and maintenance of offshore cargo carrying units on the OCS.

III. Section-by-Section Summary and Responses to Comments on the Proposed Rule

BSEE is finalizing revisions to the following regulations:

For the reasons stated in the preamble, the Bureau of Safety and Environmental Enforcement (BSEE) amends 30 CFR part 250 as follows: