82_FR_12180 82 FR 12142 - Limit of Error Concepts and Principles of Calculation in Nuclear Materials Control

82 FR 12142 - Limit of Error Concepts and Principles of Calculation in Nuclear Materials Control

NUCLEAR REGULATORY COMMISSION

Federal Register Volume 82, Issue 38 (February 28, 2017)

Page Range12142-12143
FR Document2017-03891

The U.S. Nuclear Regulatory Commission (NRC) is withdrawing Regulatory Guide (RG) 5.18, ``Limit of Error Concepts and Principles of Calculation in Nuclear Materials Control.'' This RG is being withdrawn because the term ``limit of error'' is no longer used in the material control and accounting (MC&A) requirements in NRC's regulations, and therefore the RG 5.18 guidance is no longer needed. The MC&A requirements now include the term ``standard error'' in place of the term ``limit of error.'' The ``standard error'' term is used in evaluating the significance of an inventory difference (ID). The NRC has issued guidance separately for the term ``standard error.''

Federal Register, Volume 82 Issue 38 (Tuesday, February 28, 2017)
[Federal Register Volume 82, Number 38 (Tuesday, February 28, 2017)]
[Notices]
[Pages 12142-12143]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2017-03891]


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NUCLEAR REGULATORY COMMISSION

[NRC-2017-0059]


Limit of Error Concepts and Principles of Calculation in Nuclear 
Materials Control

AGENCY: Nuclear Regulatory Commission.

ACTION: Regulatory guide: withdrawal.

-----------------------------------------------------------------------

SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is withdrawing 
Regulatory Guide (RG) 5.18, ``Limit of Error Concepts and Principles of 
Calculation in Nuclear Materials Control.'' This RG is being withdrawn 
because the term ``limit of error'' is no longer used in the material 
control and accounting (MC&A) requirements in NRC's regulations, and 
therefore the RG 5.18 guidance is no longer needed. The MC&A 
requirements now include the term ``standard error'' in place of the 
term ``limit of error.'' The ``standard error'' term is used in 
evaluating the significance of an inventory difference (ID). The NRC 
has issued guidance separately for the term ``standard error.''

DATES: The effective date of the withdrawal of RG 5.18 is February 28, 
2017.

ADDRESSES: Please refer to Docket ID NRC-2017-0059 when contacting the 
NRC about the availability of information regarding this document. You 
may obtain publically-available information related to this document, 
using the following methods:
     Federal Rulemaking Web site: Go to http://www.regulations.gov and search for Docket ID NRC-2017-0059. Address 
questions about NRC dockets to Carol Gallagher; telephone: 301-415-
3463; email: [email protected]. For technical questions, contact 
the individuals listed in the FOR FURTHER INFORMATION CONTACT section 
of this document.
     NRC's Agencywide Documents Access and Management System 
(ADAMS): You may obtain publicly-available documents online in the 
ADAMS Public Document collection at http://www.nrc.gov/reading-rm/adams.html. To begin the search, select ``ADAMS Public Documents'' and 
then select ``Begin Web-based ADAMS Search.'' For problems with ADAMS, 
please contact the NRC's Public Document Room (PDR) reference staff at 
1-800-397-4209, 301-415-4737, or by email to [email protected]. The 
ADAMS accession number for each document referenced (if it is available 
in ADAMS) is provided the first time that it is mentioned in this 
document. The basis for the withdrawal of this guide is in ADAMS under 
Accession No. ML16244A672.
     NRC's PDR: You may examine and purchase copies of public 
documents at the NRC's PDR, Room O1-F21, One White Flint North, 11555 
Rockville Pike, Rockville, Maryland 20852.
    Regulatory guides are not copyrighted, and NRC approval is not 
required to reproduce them.

FOR FURTHER INFORMATION CONTACT: Glenn Tuttle, Office of Nuclear 
Materials Safety and Safeguards, telephone: 301-415-7230, email: 
[email protected]; and Harriet Karagiannis, Office of Nuclear

[[Page 12143]]

Regulatory Research, telephone: 301-415-2493, email: 
[email protected]. Both are staff members of the U.S. Nuclear 
Regulatory Commission, Washington, DC 20555-0001.

SUPPLEMENTARY INFORMATION: The NRC staff issued RG 5.18 in January 1974 
to provide guidance on meeting the material control and accounting 
(MC&A) requirements in part 70 of title 10 the Code of Federal 
Regulations (10 CFR), ``Domestic Licensing of Special Nuclear 
Material.'' Part 70 then contained MC&A requirements, including those 
in 10 CFR 70.51, ``Material Balance, Inventory, and Records 
Requirements'' that were established in 1973. Specifically, 10 CFR 
70.51(a)(5) defined the term ``Limit of error,'' and 10 CFR 70.51(e) 
required licensees to calculate statistical limits of error for any 
material unaccounted for as part of their MC&A procedures. Part 70 
regulations no longer contain any MC&A requirements, and licensees are 
no longer required to calculate statistical limits of error for any 
material unaccounted for. In 1985, 10 CFR part 74, ``Material Control 
and Accounting of Special Nuclear Material,'' was established, and in 
2002, the 10 CFR 70.51 requirements were transferred to 10 CFR part 74 
which now includes the current MC&A requirements. As part of the 2002 
MC&A revisions, the term ``limit of error'' was replaced by the term 
``standard error,'' and licensees are now required to calculate the 
``inventory difference'' (as defined in 10 CFR 74.4) rather than 
determining the amounts of material that are ``unaccounted for.'' The 
``standard error'' is used in evaluating the significance of an 
inventory difference (ID).
    Guidance for calculating the ``standard error'' of the ID is found 
in NUREG-1065, ``Acceptable Standard Format and Content for the 
Fundamental Nuclear Material Control (FNMC) Plan Required for Low-
Enriched Uranium Facilities'' (ADAMS Accession No. ML031340288), NUREG-
1280, ``Standard Format and Content Acceptance Criteria for the 
Material Control and Accounting (MC&A) Reform Amendment'' (ADAMS 
Accession No. ML13253A308), and NUREG/CR-5734, ``Recommendations to the 
NRC on Acceptable Standard Format and Content for the Fundamental 
Nuclear Material Control (FNMC) Plan Required for Low-Enriched Uranium 
Enrichment Facilities'' (ADAMS Accession No. ML15120A354).
    In addition, RG 5.18 endorsed the American National Standards 
Institute Standard N15.16-1974, ``Limit of Error Concepts and 
Principles of Calculation in Nuclear Materials Control,'' to provide 
guidance on the ``limit of error'' concept. However, this standard has 
been withdrawn from active status with no replacement.
    The NRC is withdrawing RG 5.18 because it is no longer needed. 
Withdrawal of an RG means that the guide no longer provides useful 
information or has been superseded by other guidance, technological 
innovations, congressional actions, or other events. The withdrawal of 
RG 5.18 does not alter any prior or existing NRC licensing approval or 
the acceptability of licensee commitments to RG 5.18. Although RG 5.18 
is withdrawn, current licensees may continue to use it, and withdrawal 
does not affect any existing licenses or agreements. However, 5.18 
should not be used in future requests or applications for NRC licensing 
actions.

    Dated at Rockville, Maryland, this 21st day of February 2017.

    For the Nuclear Regulatory Commission.
Harriet Karagiannis,
Acting Chief, Regulatory Guidance and Generic Issues Branch, Division 
of Engineering, Office of Nuclear Regulatory Research.
[FR Doc. 2017-03891 Filed 2-27-17; 8:45 am]
 BILLING CODE 7590-01-P



                                                  12142                       Federal Register / Vol. 82, No. 38 / Tuesday, February 28, 2017 / Notices

                                                  are listed in the Safety Evaluation                        Description of amendment: The                      Control.’’ This RG is being withdrawn
                                                  enclosed with the amendments.                           amendment authorizes changes to the                   because the term ‘‘limit of error’’ is no
                                                    Renewed Facility Operating License                    VEGP Units 3 and 4 Updated Final                      longer used in the material control and
                                                  Nos. NPF–57, DPR–70, and DPR–75: The                    Safety Analysis Report in the form of                 accounting (MC&A) requirements in
                                                  amendments revised the Renewed                          departures from the incorporated plant                NRC’s regulations, and therefore the RG
                                                  Facility Operating Licenses and the TSs.                specific Design Control Document Tier                 5.18 guidance is no longer needed. The
                                                    Date of initial notice in Federal                     2 information and involves changes to                 MC&A requirements now include the
                                                  Register: November 22, 2016 (81 FR                      COL Appendix A Technical                              term ‘‘standard error’’ in place of the
                                                  83877). The supplemental letter dated                   Specifications and associated Bases. The              term ‘‘limit of error.’’ The ‘‘standard
                                                  December 19, 2016, provided additional                  changes add reactor coolant density                   error’’ term is used in evaluating the
                                                  information that clarified the                          compensation to the reactor coolant                   significance of an inventory difference
                                                  application, did not expand the scope of                flow input signal to the Reactor Trip                 (ID). The NRC has issued guidance
                                                  the application as originally noticed,                  System instrumentation for the low                    separately for the term ‘‘standard error.’’
                                                  and did not change the staff’s original                 reactor coolant flow reactor trip                     DATES: The effective date of the
                                                  proposed no significant hazards                         function and add Technical                            withdrawal of RG 5.18 is February 28,
                                                  consideration determination as                          Specification Surveillance Requirement                2017.
                                                  published in the Federal Register.                      3.3.1.3 to the surveillances required for
                                                    The Commission’s related evaluation                                                                         ADDRESSES: Please refer to Docket ID
                                                                                                          the Reactor Coolant Flow-Low reactor                  NRC–2017–0059 when contacting the
                                                  of the amendments is contained in a                     trip.
                                                  Safety Evaluation dated February 6,                                                                           NRC about the availability of
                                                                                                             Date of issuance: January 13, 2017.                information regarding this document.
                                                  2017.                                                      Effective date: As of the date of
                                                    No significant hazards consideration                                                                        You may obtain publically-available
                                                                                                          issuance and shall be implemented                     information related to this document,
                                                  comments received: No.
                                                                                                          within 30 days of issuance.                           using the following methods:
                                                  Southern Nuclear Operating Company,                        Amendment No.: 65. A publicly-                        • Federal Rulemaking Web site: Go to
                                                  Docket No. 52–025, Vogtle Electric                      available version is in ADAMS under                   http://www.regulations.gov and search
                                                  Generating Plant (VEGP), Unit 3, Burke                  Accession No. ML16348A073;                            for Docket ID NRC–2017–0059. Address
                                                  County, Georgia                                         documents related to this amendment                   questions about NRC dockets to Carol
                                                     Date of amendment request:                           are listed in the Safety Evaluation                   Gallagher; telephone: 301–415–3463;
                                                  September 13, 2016.                                     enclosed with the amendment.                          email: Carol.Gallagher@nrc.gov. For
                                                     Description of amendment: The                           Facility Combined Licenses Nos. NPF–               technical questions, contact the
                                                  amendment authorizes changes to the                     91 and NPF–92: Amendment revised the                  individuals listed in the FOR FURTHER
                                                  VEGP Units 3 and 4 Updated Final                        Facility Combined License.                            INFORMATION CONTACT section of this
                                                  Safety Analysis Report in the form of                      Date of initial notice in Federal                  document.
                                                  departures from the incorporated plant                  Register: August 2, 2016 (81 FR 50729).                  • NRC’s Agencywide Documents
                                                  specific Design Control Document Tier                      The Commission’s related evaluation                Access and Management System
                                                  2* information. The departures change                   of the amendment is contained in the                  (ADAMS): You may obtain publicly-
                                                  the provided minimum reinforcement                      Safety Evaluation dated January 13,                   available documents online in the
                                                  area in the VEGP Unit 3 column line 7.3                 2017.                                                 ADAMS Public Document collection at
                                                  wall from elevation 82′-6″ to elevation                    No significant hazards consideration               http://www.nrc.gov/reading-rm/
                                                  100′-0″.                                                comments received: No.                                adams.html. To begin the search, select
                                                     Date of issuance: January 30, 2017.                    Dated at Rockville, Maryland, this 17th day         ‘‘ADAMS Public Documents’’ and then
                                                     Effective date: As of the date of                    of February 2017.                                     select ‘‘Begin Web-based ADAMS
                                                  issuance and shall be implemented                         For the Nuclear Regulatory Commission.              Search.’’ For problems with ADAMS,
                                                  within 30 days of issuance.                                                                                   please contact the NRC’s Public
                                                                                                          Kathryn M. Brock,
                                                     Amendment No.: 68. A publicly-                                                                             Document Room (PDR) reference staff at
                                                  available version is in ADAMS under                     Deputy Director, Division of Operating
                                                                                                          Reactor Licensing, Office of Nuclear Reactor          1–800–397–4209, 301–415–4737, or by
                                                  Accession No. ML16350A060;                                                                                    email to pdr.resource@nrc.gov. The
                                                                                                          Regulation.
                                                  documents related to this amendment                                                                           ADAMS accession number for each
                                                                                                          [FR Doc. 2017–03806 Filed 2–27–17; 8:45 am]
                                                  are listed in the Safety Evaluation                                                                           document referenced (if it is available in
                                                  enclosed with the amendment.                            BILLING CODE 7590–01–P
                                                                                                                                                                ADAMS) is provided the first time that
                                                     Facility Combined Licenses No. NPF–
                                                                                                                                                                it is mentioned in this document. The
                                                  91: Amendment revised the Facility
                                                                                                          NUCLEAR REGULATORY                                    basis for the withdrawal of this guide is
                                                  Combined License.
                                                     Date of initial notice in Federal                    COMMISSION                                            in ADAMS under Accession No.
                                                  Register: October 11, 2016 (81 FR                                                                             ML16244A672.
                                                                                                          [NRC–2017–0059]                                          • NRC’s PDR: You may examine and
                                                  70175).
                                                     The Commission’s related evaluation                                                                        purchase copies of public documents at
                                                                                                          Limit of Error Concepts and Principles                the NRC’s PDR, Room O1–F21, One
                                                  of the amendment is contained in the                    of Calculation in Nuclear Materials
                                                  Safety Evaluation dated January 30,                                                                           White Flint North, 11555 Rockville
                                                                                                          Control                                               Pike, Rockville, Maryland 20852.
                                                  2017.
                                                     No significant hazards consideration                 AGENCY:  Nuclear Regulatory                              Regulatory guides are not
                                                                                                          Commission.                                           copyrighted, and NRC approval is not
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                                                  comments received: No.
                                                                                                          ACTION: Regulatory guide: withdrawal.
                                                                                                                                                                required to reproduce them.
                                                  Southern Nuclear Operating Company,                                                                           FOR FURTHER INFORMATION CONTACT:
                                                  Docket Nos. 52–025 and 52–026, Vogtle                   SUMMARY:  The U.S. Nuclear Regulatory                 Glenn Tuttle, Office of Nuclear
                                                  Electric Generating Plant (VEGP), Units                 Commission (NRC) is withdrawing                       Materials Safety and Safeguards,
                                                  3 and 4, Burke County, Georgia                          Regulatory Guide (RG) 5.18, ‘‘Limit of                telephone: 301–415–7230, email:
                                                    Date of amendment request: May 27,                    Error Concepts and Principles of                      Glenn.Tuttle@nrc.gov; and Harriet
                                                  2016.                                                   Calculation in Nuclear Materials                      Karagiannis, Office of Nuclear


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                                                                              Federal Register / Vol. 82, No. 38 / Tuesday, February 28, 2017 / Notices                                                  12143

                                                  Regulatory Research, telephone: 301–                    in Nuclear Materials Control,’’ to                      OMB Control Number: 0420–0006.
                                                  415–2493, email: Harriet.Karagiannis@                   provide guidance on the ‘‘limit of error’’              Type of Request: Revision.
                                                  nrc.gov. Both are staff members of the                  concept. However, this standard has                     Affected Public: Individuals.
                                                  U.S. Nuclear Regulatory Commission,                     been withdrawn from active status with                  Respondents Obligation to Reply:
                                                  Washington, DC 20555–0001.                              no replacement.                                       Voluntary.
                                                  SUPPLEMENTARY INFORMATION: The NRC                         The NRC is withdrawing RG 5.18                       Respondents: Individuals.
                                                  staff issued RG 5.18 in January 1974 to                 because it is no longer needed.                         Burden to the Public:
                                                  provide guidance on meeting the                         Withdrawal of an RG means that the                      Estimated burden (hours) of the
                                                  material control and accounting (MC&A)                  guide no longer provides useful                       collection of information:
                                                  requirements in part 70 of title 10 the                 information or has been superseded by
                                                                                                          other guidance, technological                         a. Number of respondents ..        18,000.
                                                  Code of Federal Regulations (10 CFR),                                                                         b. Frequency of response ...       one time.
                                                  ‘‘Domestic Licensing of Special Nuclear                 innovations, congressional actions, or                c. Completion time .............   10 minutes.
                                                  Material.’’ Part 70 then contained MC&A                 other events. The withdrawal of RG 5.18               d. Annual burden hours ....        3,000 hours.
                                                  requirements, including those in 10 CFR                 does not alter any prior or existing NRC
                                                  70.51, ‘‘Material Balance, Inventory, and               licensing approval or the acceptability                 General Description of Collection: The
                                                  Records Requirements’’ that were                        of licensee commitments to RG 5.18.                   reference form is a tool that the Peace
                                                  established in 1973. Specifically, 10                   Although RG 5.18 is withdrawn, current                Corps employs to ensure a standardized
                                                  CFR 70.51(a)(5) defined the term ‘‘Limit                licensees may continue to use it, and                 suitability review of applicants. The
                                                  of error,’’ and 10 CFR 70.51(e) required                withdrawal does not affect any existing               Assessment and Placement Officer
                                                  licensees to calculate statistical limits of            licenses or agreements. However, 5.18                 requests the completion of the reference
                                                  error for any material unaccounted for                  should not be used in future requests or              form and uses the information therein to
                                                  as part of their MC&A procedures. Part                  applications for NRC licensing actions.               assist in determining the suitability and
                                                  70 regulations no longer contain any                      Dated at Rockville, Maryland, this 21st day         competitiveness of the applicant.
                                                  MC&A requirements, and licensees are                    of February 2017.                                       Request for Comment: Peace Corps
                                                  no longer required to calculate                           For the Nuclear Regulatory Commission.              invites comments on whether the
                                                  statistical limits of error for any material            Harriet Karagiannis,                                  proposed collections of information are
                                                  unaccounted for. In 1985, 10 CFR part                   Acting Chief, Regulatory Guidance and                 necessary for proper performance of the
                                                  74, ‘‘Material Control and Accounting of                Generic Issues Branch, Division of                    functions of the Peace Corps, including
                                                  Special Nuclear Material,’’ was                         Engineering, Office of Nuclear Regulatory             whether the information will have
                                                  established, and in 2002, the 10 CFR                    Research.                                             practical use; the accuracy of the
                                                  70.51 requirements were transferred to                  [FR Doc. 2017–03891 Filed 2–27–17; 8:45 am]           agency’s estimate of the burden of the
                                                  10 CFR part 74 which now includes the                   BILLING CODE 7590–01–P                                proposed collection of information,
                                                  current MC&A requirements. As part of                                                                         including the validity of the information
                                                  the 2002 MC&A revisions, the term                                                                             to be collected; and, ways to minimize
                                                  ‘‘limit of error’’ was replaced by the                  PEACE CORPS                                           the burden of the collection of
                                                  term ‘‘standard error,’’ and licensees are                                                                    information on those who are to
                                                  now required to calculate the                           Information Collection Request;                       respond, including through the use of
                                                  ‘‘inventory difference’’ (as defined in 10              Submission for OMB Review                             automated collection techniques, when
                                                  CFR 74.4) rather than determining the                                                                         appropriate, and other forms of
                                                  amounts of material that are                            AGENCY:Peace Corps.                                   information technology.
                                                  ‘‘unaccounted for.’’ The ‘‘standard                           60-day notice and request for
                                                                                                          ACTION:
                                                                                                                                                                  This notice is issued in Washington, DC,
                                                  error’’ is used in evaluating the                       comments.                                             on February 23, 2017.
                                                  significance of an inventory difference                 SUMMARY:   The Peace Corps will be                    Denora Miller,
                                                  (ID).                                                   submitting the following information                  FOIA/Privacy Act Officer, Management.
                                                     Guidance for calculating the                         collection request to the Office of                   [FR Doc. 2017–03862 Filed 2–27–17; 8:45 am]
                                                  ‘‘standard error’’ of the ID is found in                Management and Budget (OMB) for                       BILLING CODE 6051–01–P
                                                  NUREG–1065, ‘‘Acceptable Standard                       review and approval. The purpose of
                                                  Format and Content for the                              this notice is to allow 60 days for public
                                                  Fundamental Nuclear Material Control                    comment in the Federal Register
                                                  (FNMC) Plan Required for Low-                                                                                 OFFICE OF PERSONNEL
                                                                                                          preceding submission to OMB. We are                   MANAGEMENT
                                                  Enriched Uranium Facilities’’ (ADAMS                    conducting this process in accordance
                                                  Accession No. ML031340288), NUREG–                      with the Paperwork Reduction Act of                   Comment Request for Review of a
                                                  1280, ‘‘Standard Format and Content                     1995 (44 U.S.C. Chapter 35).                          Revised Information Collection: Multi-
                                                  Acceptance Criteria for the Material
                                                                                                          DATES: Submit comments on or before                   State Plan Program External Review
                                                  Control and Accounting (MC&A) Reform
                                                                                                          May 1, 2017.                                          Case Intake Form, OPM Form 1840
                                                  Amendment’’ (ADAMS Accession No.
                                                                                                          ADDRESSES: Comments should be
                                                  ML13253A308), and NUREG/CR–5734,                                                                              AGENCY: Office of Personnel
                                                  ‘‘Recommendations to the NRC on                         addressed to Denora Miller, FOIA/
                                                                                                                                                                Management.
                                                  Acceptable Standard Format and                          Privacy Act Officer. Denora Miller can
                                                                                                          be contacted by telephone at 202–692–                 ACTION: Notice.
                                                  Content for the Fundamental Nuclear
                                                  Material Control (FNMC) Plan Required                   1236 or email at pcfr@peacecorps.gov.                 SUMMARY:   The Office of Personnel
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                                                  for Low-Enriched Uranium Enrichment                     Email comments must be made in text                   Management (OPM) intends to submit to
                                                  Facilities’’ (ADAMS Accession No.                       and not in attachments.                               the Office of Management and Budget
                                                  ML15120A354).                                           FOR FURTHER INFORMATION CONTACT:                      (OMB) a request for review of a revision
                                                     In addition, RG 5.18 endorsed the                    Denora Miller at Peace Corps address                  of a currently approved collection, the
                                                  American National Standards Institute                   above.                                                Multi-State Plan Program External
                                                  Standard N15.16–1974, ‘‘Limit of Error                  SUPPLEMENTARY INFORMATION:                            Review Intake Form, OPM Form 1840.
                                                  Concepts and Principles of Calculation                    Title: Confidential Reference Form.                 Approval of the revised Multi-State Plan


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Document Created: 2017-02-27 23:53:48
Document Modified: 2017-02-27 23:53:48
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionNotices
ActionRegulatory guide: withdrawal.
DatesThe effective date of the withdrawal of RG 5.18 is February 28, 2017.
ContactGlenn Tuttle, Office of Nuclear Materials Safety and Safeguards, telephone: 301-415-7230, email: [email protected]; and Harriet Karagiannis, Office of Nuclear Regulatory Research, telephone: 301-415-2493, email: [email protected] Both are staff members of the U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001.
FR Citation82 FR 12142 

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