80_FR_24376 80 FR 24293 - Net Positive Suction Head for Emergency Core Cooling and Containment Heat Removal System Pumps

80 FR 24293 - Net Positive Suction Head for Emergency Core Cooling and Containment Heat Removal System Pumps

NUCLEAR REGULATORY COMMISSION

Federal Register Volume 80, Issue 83 (April 30, 2015)

Page Range24293-24294
FR Document2015-10076

The U.S. Nuclear Regulatory Commission (NRC) is withdrawing regulatory guide (RG), RG 1.1 ``Net Positive Suction Head for Emergency Core Cooling and Containment Heat Removal System Pumps.'' The guide is being withdrawn because the same guidance is provided with more detail by RG 1.82, ``Water Sources for Long-Term Recirculation Cooling Following a Loss-of-Coolant Accident.''

Federal Register, Volume 80 Issue 83 (Thursday, April 30, 2015) 
[Federal Register Volume 80, Number 83 (Thursday, April 30, 2015)]
[Notices]
[Pages 24293-24294]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2015-10076]


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NUCLEAR REGULATORY COMMISSION

[NRC-2015-0107]


Net Positive Suction Head for Emergency Core Cooling and 
Containment Heat Removal System Pumps

AGENCY: Nuclear Regulatory Commission.

ACTION: Regulatory guide; withdrawal.

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SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is withdrawing 
regulatory guide (RG), RG 1.1 ``Net Positive Suction Head for Emergency 
Core Cooling and Containment Heat Removal System Pumps.'' The guide is 
being withdrawn because the same guidance is provided with more detail 
by RG 1.82, ``Water Sources for Long-Term Recirculation Cooling 
Following a Loss-of-Coolant Accident.''

DATES: Effective April 30, 2015, the NRC withdraws RG 1.1.

ADDRESSES: Please refer to Docket ID NRC-2015-0107 when contacting the 
NRC about the availability of information regarding this document. You 
may obtain publicly-available information related to this document 
using any of the following methods:

[[Page 24294]]

     Federal Rulemaking Web site: Go to http://www.regulations.gov and search for Docket ID NRC-2015-0107. Address 
questions about NRC dockets to Carol Gallagher; telephone: 301-415-
3463; email: Carol.Gallagher@nrc.gov. For technical questions, contact 
the individual(s) 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 Documents 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 pdr.resource@nrc.gov. The 
ADAMS accession number for each document referenced (if it available in 
ADAMS) is provided the first time that a document is referenced.
     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.

FOR FURTHER INFORMATION CONTACT: Ahsan Sallman, Office of Nuclear 
Reactor Regulation, telephone: 310-415-2380 email: 
Ahsan.Sallman@nrc.gov, and Richard Jervey, Office of Nuclear Regulatory 
Research, telephone: 301-251-7404, email: Richard.Jervey@nrc.gov. Both 
are staff of the U.S. Nuclear Regulatory Commission, Washington, DC 
20555-0001.

SUPPLEMENTARY INFORMATION: 

I. Introduction

    The NRC is withdrawing RG 1.1 because its guidance has been 
incorporated into RG 1.82, ``Water Sources for Long-Term Recirculation 
Cooling Following a Loss-of-Coolant Accident.''

II. Further Information

    The withdrawal of RG 1.1 does not alter any prior or existing 
licensing commitments based on its use. Although a regulatory guide is 
withdrawn, its use in existing licenses is still valid, and changes to 
the licenses can be accomplished using other regulatory products. 
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. A withdrawn guide 
should not be used for future NRC licensing activities.
    This RG 1.1 provides guidance on meeting the requirements in part 
50, appendix A of Title 10 of the Code of Federal Regulations (10 CFR), 
General Design Criteria (GDC), GDC 35, ``Emergency Core Cooling,'' and 
GDC 38, ``Containment Heat Removal.'' The GDC 35 and 38 require that 
the emergency cooling and containment heat removal systems be capable 
of accomplishing their required safety functions assuming loss of 
offsite power and single failure. The ability to accomplish these 
safety functions reliably depends in part on the proper performance of 
system pumps which, in turn, depends on the conditions under which the 
pumps must operate. One of these conditions is suction pressure and the 
closely related characteristic net positive suction head. The 
information in RG 1.82 has been updated from extensive reviews of the 
emergency core cooling system recirculation systems which have reduced 
the uncertainties contained in modeling studies of these systems. The 
NRC staff has determined that the RG 1.82 guidance is more thorough and 
provides the needed detail to allow consideration of nuances in design 
which were not contemplated when RG 1.1 was written in 1970.
    The guidance from RG 1.1 pertaining to suction pressure and net 
positive suction head has been incorporated into RG 1.82, ``Water 
Sources for Long-Term Recirculation Cooling Following a Loss-of-Coolant 
Accident,'' which includes detailed guidance related to emergency 
cooling systems. The RG 1.1 is superseded by RG 1.82.

    Dated at Rockville, Maryland, this 23rd day of April, 2015.

    For the Nuclear Regulatory Commission.
Thomas H. Boyce,
Chief, Regulatory Guidance and Generic Issues Branch, Division of 
Engineering, Office of Nuclear Regulatory Research.
[FR Doc. 2015-10076 Filed 4-29-15; 8:45 am]
 BILLING CODE 7590-01-P

Federal Register / Vol. 80, No. 83 / Thursday, April 30, 2015 / Notices 24293 there are also no known socioeconomic License Renewal of Nuclear Plants: maintain offsite radiological emergency or environmental justice impacts Regarding Vermont Yankee Nuclear plans and reduce some of the onsite EP associated with the proposed action. Power Station,’’ Volumes 1 and 2, activities at VY, based on the reduced Therefore, there are no significant non- published in August 2007. risks at the permanently shutdown and radiological environmental impacts defueled reactor. However, Agencies or Persons Consulted associated with the proposed action. requirements for certain onsite Accordingly, the NRC concludes that The NRC staff did not enter into capabilities to communicate and there are no significant environmental consultation with any other Federal coordinate with offsite response impacts associated with the proposed agency or with the State of Vermont authorities will be retained and offsite action. regarding the environmental impact of EP provisions will still exist through the proposed action. On April 24, 2015, State and local government use of a Environmental Impacts of the the Vermont State representative was Alternatives to the Proposed Action CEMP. notified of this draft EA and FONSI. As an alternative to the proposed Consistent with 10 CFR 51.21, the IV. Finding of No Significant Impact NRC conducted the EA for the proposed action, the NRC staff considered the denial of the proposed action (i.e., the The licensee has proposed action included in Section III of this ‘‘no-action’’ alternative). The denial of exemptions from: (1) Certain document, and incorporated by the application would result in no requirements in 10 CFR 50.47(b) reference in this finding. On the basis of change in current environmental regarding onsite and offsite emergency this EA, the NRC concludes that the impacts. Therefore, the environmental response plans for nuclear power proposed action will not have a impacts of the proposed action and the reactors; (2) certain requirements in 10 significant effect on the quality of the alternative action are similar. CFR 50.47(c)(2) to establish plume human environment. Accordingly, the exposure and ingestion pathway EP NRC has decided not to prepare an Alternative Use of Resources zones for nuclear power reactors; and environmental impact statement for the The proposed action does not involve (3) certain requirements in 10 CFR part proposed action. the use of any different resources than 50, appendix E, section IV, which V. Availability of Documents those previously considered in the Final establishes the elements that make up Environmental Statement for VY, dated the content of emergency plans. The The documents identified in the July 1972, as supplemented by NUREG– proposed action of granting these following table are available to 1437, Supplement 30, ‘‘Generic exemptions would eliminate the interested persons through one or more Environmental Impact Statement for requirements for the licensee to of the following methods, as indicated. ADAMS Accession Document No./Web link/ Developing and Maintaining Emergency Operations Plans, Comprehensive Preparedness Guide (CPG) 101, http://www.fema.gov. Version 2.0, November 2010. Docket No. 50–271, Request for Exemptions from Portions of 10 CFR 50.47 and 10 CFR 50, Appendix E, ADAMS Accession No. Vermont Yankee Nuclear Power Station, March 14, 2014. ML14080A141. Docket No. 50–271, Request for Exemptions from Portions of 10 CFR 50.47 and 10 CFR 50, Appendix E— ADAMS Accession No. Supplement 1, Vermont Yankee Nuclear Power Station, August 29, 2014. ML14246A176. Docket No. 50–271, Request for Exemptions from Portions of 10 CFR 50.47 and 10 CFR 50, Appendix E— ADAMS Accession No. Supplement 2, Vermont Yankee Nuclear Power Station, October 21, 2014. ML14297A159. Protective Action Guides and Planning Guidance for Radiological Incidents, U.S. Environmental Protection http://www.epa.gov. Agency Draft for Interim Use and Public Comment, March 2013. SECY–14–0125, ‘‘Request by Entergy Nuclear Operations, Inc. for Exemptions from Certain Emergency Plan- ADAMS Accession No. ning Requirements,’’ November 14, 2014. ML14227A711. Staff Requirements Memorandum to SECY–14–0125, ‘‘Request by Entergy Nuclear Operations, Inc., for Ex- ADAMS Accession No. emptions from Certain Emergency Planning Requirements,’’ March 2, 2015. ML15061A516. NUREG–1437, Supplement 30, ‘‘Generic Environmental Impact Statement for License Renewal of Nuclear ADAMS Accession No. Plants Regarding Vermont Yankee Nuclear Power Station,’’ August 2007. ML071840398. Dated at Rockville, Maryland, this 24th day NUCLEAR REGULATORY Core Cooling and Containment Heat of April, 2015. COMMISSION Removal System Pumps.’’ The guide is For the Nuclear Regulatory Commission. being withdrawn because the same Meena K. Khanna, [NRC–2015–0107] guidance is provided with more detail Chief, Plant Licensing IV–2 and by RG 1.82, ‘‘Water Sources for Long- Decommissioning Transition Branch, Net Positive Suction Head for Term Recirculation Cooling Following a Division of Operating Reactor Licensing, Emergency Core Cooling and Loss-of-Coolant Accident.’’ Office of Nuclear Reactor Regulation. Containment Heat Removal System Pumps DATES:Effective April 30, 2015, the NRC [FR Doc. 2015–10126 Filed 4–29–15; 8:45 am] withdraws RG 1.1. mstockstill on DSK4VPTVN1PROD with NOTICES BILLING CODE 7590–01–P AGENCY: Nuclear Regulatory Commission. ADDRESSES: Please refer to Docket ID ACTION: Regulatory guide; withdrawal. NRC–2015–0107 when contacting the NRC about the availability of SUMMARY: The U.S. Nuclear Regulatory information regarding this document. Commission (NRC) is withdrawing You may obtain publicly-available regulatory guide (RG), RG 1.1 ‘‘Net information related to this document Positive Suction Head for Emergency using any of the following methods: VerDate Sep<11>2014 17:01 Apr 29, 2015 Jkt 235001 PO 00000 Frm 00064 Fmt 4703 Sfmt 4703 E:\FR\FM\30APN1.SGM 30APN1

24294 Federal Register / Vol. 80, No. 83 / Thursday, April 30, 2015 / Notices • Federal Rulemaking Web site: Go to This RG 1.1 provides guidance on Corporation for an amendment of http://www.regulations.gov and search meeting the requirements in part 50, Materials License No. SUA–1475. The for Docket ID NRC–2015–0107. Address appendix A of Title 10 of the Code of amendment would change License questions about NRC dockets to Carol Federal Regulations (10 CFR), General Condition 30.A by adding two new Gallagher; telephone: 301–415–3463; Design Criteria (GDC), GDC 35, monitoring wells that are already in email: Carol.Gallagher@nrc.gov. For ‘‘Emergency Core Cooling,’’ and GDC service, and License Condition 30.C by technical questions, contact the 38, ‘‘Containment Heat Removal.’’ The removing requirements for work that individual(s) listed in the FOR FURTHER GDC 35 and 38 require that the has been completed. These changes are INFORMATION CONTACT section of this emergency cooling and containment administrative in nature. document. heat removal systems be capable of DATES: A request for a hearing or • NRC’s Agencywide Documents accomplishing their required safety petition for leave to intervene must be Access and Management System functions assuming loss of offsite power filed by June 29, 2015. (ADAMS): You may obtain publicly- and single failure. The ability to ADDRESSES: Please refer to Docket ID available documents online in the accomplish these safety functions NRC–2013–0036 when contacting the ADAMS Public Documents collection at reliably depends in part on the proper NRC about the availability of http://www.nrc.gov/reading-rm/ performance of system pumps which, in information regarding this document. adams.html. To begin the search, select turn, depends on the conditions under You may obtain publicly-available ‘‘ADAMS Public Documents’’ and then which the pumps must operate. One of information related to this document select ‘‘Begin Web-based ADAMS these conditions is suction pressure and using any of the following methods: Search.’’ For problems with ADAMS, the closely related characteristic net • Federal Rulemaking Web site: Go to please contact the NRC’s Public positive suction head. The information http://www.regulations.gov and search Document Room (PDR) reference staff at in RG 1.82 has been updated from for Docket ID NRC–2013–0036. Address 1–800–397–4209, 301–415–4737, or by extensive reviews of the emergency core questions about NRC dockets to Carol email to pdr.resource@nrc.gov. The cooling system recirculation systems Gallagher; telephone: 301–415–3463; ADAMS accession number for each which have reduced the uncertainties email: Carol.Gallagher@nrc.gov. For document referenced (if it available in contained in modeling studies of these technical questions, contact the ADAMS) is provided the first time that systems. The NRC staff has determined individual listed in the FOR FURTHER a document is referenced. that the RG 1.82 guidance is more INFORMATION CONTACT section of this • NRC’s PDR: You may examine and thorough and provides the needed detail purchase copies of public documents at document. the NRC’s PDR, Room O1–F21, One to allow consideration of nuances in • NRC’s Agencywide Documents design which were not contemplated Access and Management System White Flint North, 11555 Rockville when RG 1.1 was written in 1970. Pike, Rockville, Maryland 20852. (ADAMS): You may obtain publicly- The guidance from RG 1.1 pertaining available documents online in the FOR FURTHER INFORMATION CONTACT: to suction pressure and net positive ADAMS Public Documents collection at Ahsan Sallman, Office of Nuclear suction head has been incorporated into http://www.nrc.gov/reading-rm/ Reactor Regulation, telephone: 310– RG 1.82, ‘‘Water Sources for Long-Term adams.html. To begin the search, select 415–2380 email: Ahsan.Sallman@ Recirculation Cooling Following a Loss- ‘‘ADAMS Public Documents’’ and then nrc.gov, and Richard Jervey, Office of of-Coolant Accident,’’ which includes select ‘‘Begin Web-based ADAMS Nuclear Regulatory Research, telephone: detailed guidance related to emergency Search.’’ For problems with ADAMS, 301–251–7404, email: Richard.Jervey@ cooling systems. The RG 1.1 is please contact the NRC’s Public nrc.gov. Both are staff of the U.S. superseded by RG 1.82. Nuclear Regulatory Commission, Document Room (PDR) reference staff at Washington, DC 20555–0001. Dated at Rockville, Maryland, this 23rd day 1–800–397–4209, 301–415–4737, or by of April, 2015. email to pdr.resource@nrc.gov. The SUPPLEMENTARY INFORMATION: For the Nuclear Regulatory Commission. ADAMS accession number for each I. Introduction Thomas H. Boyce, document referenced in this document The NRC is withdrawing RG 1.1 Chief, Regulatory Guidance and Generic (if that document is available in because its guidance has been Issues Branch, Division of Engineering, Office ADAMS) is provided the first time that incorporated into RG 1.82, ‘‘Water of Nuclear Regulatory Research. a document is referenced. Sources for Long-Term Recirculation [FR Doc. 2015–10076 Filed 4–29–15; 8:45 am] • NRC’s PDR: You may examine and Cooling Following a Loss-of-Coolant BILLING CODE 7590–01–P purchase copies of public documents at Accident.’’ the NRC’s PDR, Room O1–F21, One White Flint North, 11555 Rockville II. Further Information NUCLEAR REGULATORY Pike, Rockville, Maryland 20852. The withdrawal of RG 1.1 does not COMMISSION FOR FURTHER INFORMATION CONTACT: alter any prior or existing licensing Thomas McLaughlin, Office of Nuclear commitments based on its use. [Docket No. 40–8907, NRC–2013–0036] Material Safety and Safeguards, U.S. Although a regulatory guide is Nuclear Regulatory Commission, United Nuclear Corporation; Church withdrawn, its use in existing licenses Washington DC 20555–0001; telephone: Rock Facility is still valid, and changes to the licenses 301–415–5869, email: can be accomplished using other AGENCY: Nuclear Regulatory Thomas.McLaughlin@nrc.gov. mstockstill on DSK4VPTVN1PROD with NOTICES regulatory products. Withdrawal of an Commission. SUPPLEMENTARY INFORMATION: RG means that the guide no longer ACTION: License amendment application; provides useful information or has been I. Introduction opportunity to request a hearing and to superseded by other guidance, petition for leave to intervene. The NRC has received, by letter dated technological innovations, January 22, 2015 (ADAMS Accession congressional actions, or other events. A SUMMARY: The U.S. Nuclear Regulatory No. ML15033A453), an application from withdrawn guide should not be used for Commission (NRC) has received an United Nuclear Corporation to amend future NRC licensing activities. application from United Nuclear Materials License No. SUA–1475. The VerDate Sep<11>2014 17:01 Apr 29, 2015 Jkt 235001 PO 00000 Frm 00065 Fmt 4703 Sfmt 4703 E:\FR\FM\30APN1.SGM 30APN1


Document Created: 2018-02-21 10:14:57
Document Modified: 2018-02-21 10:14:57
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.
DatesEffective April 30, 2015, the NRC withdraws RG 1.1.
ContactAhsan Sallman, Office of Nuclear Reactor Regulation, telephone: 310-415-2380 email: [email protected], and Richard Jervey, Office of Nuclear Regulatory Research, telephone: 301-251-7404, email: [email protected] Both are staff of the U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001.
FR Citation80 FR 24293 
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