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2010-09-24
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Proposed Generic Communication; Loss of Reactor Coolant Inventory and Associated Potential for Loss of Emergency Mitigation Functions While in a Shutdown Condition (M92635)
Notices
D09002ee1be02482c
D09002ee1be0248c9
United States
Nuclear Regulatory Commission
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org
United States Government Agency or Subagency
The Nuclear Regulatory Commission (NRC) is proposing to issue a generic letter that will request addressees to (1) assess the susceptibility of their emergency core cooling system (ECCS) to common- cause failure as a result of reactor coolant system (RCS) draindown while in a shutdown condition, and (2) submit certain information, pursuant to Sec. 50.54(f) of Title 10 of the Code of Federal Regulations (10 CFR 50.54(f)), concerning their findings regarding potential pathways for inadvertent RCS drain-down and the suitability of configuration control and operating practices during reactor shutdown cooling. This information will enable NRC staff to verify whether addressees comply and conform with NRC regulatory and license requirements; i.e., are adequately maintaining the residual heat removal safety function to transfer fission product decay heat and other residual heat from the reactor core (General Design Criterion (GDC) 34 of Appendix A to 10 CFR 50), and the ECCS to provide abundant emergency core cooling when required (GDC 35 of Appendix A to 10 CFR part 50). The NRC is seeking comment from interested parties regarding both the technical and regulatory aspects of the proposed generic letter presented under the Supplementary Information heading. The proposed generic letter has been endorsed by the Committee to Review Generic Requirements (CRGR). The relevant information that was sent to the CRGR will be placed in the NRC Public Document Room. The NRC will consider comments received from interested parties in the final evaluation of the proposed generic letter. The NRC's final evaluation will include a review of the technical position and, as appropriate, an analysis of the value/impact on licensees. Should this generic letter be issued by the NRC, it will become available for public inspection in the NRC Public Document Room.
62 FR 7075
https://www.govinfo.gov/app/details/FR-1997-02-14/97-3737
97-3737
fr14fe97-125
7590-01-P
https://www.govinfo.gov/app/details/FR-1997-02-14/97-3737
https://www.govinfo.gov/content/pkg/FR-1997-02-14/html/97-3737.htm
https://www.govinfo.gov/content/pkg/FR-1997-02-14/pdf/97-3737.pdf
3 p.
7075
7077
62 FR 7075
Proposed Generic Communication; Loss of Reactor Coolant Inventory and Associated Potential for Loss of Emergency Mitigation Functions While in a Shutdown Condition (M92635); Federal Register Vol. 62, Issue
NOTICE
97-3737
NUCLEAR REGULATORY COMMISSION
1997-03-17
7590-01-P
97-3737
Notice of opportunity for public comment.
The Nuclear Regulatory Commission (NRC) is proposing to issue a generic letter that will request addressees to (1) assess the susceptibility of their emergency core cooling system (ECCS) to common- cause failure as a result of reactor coolant system (RCS) draindown while in a shutdown condition, and (2) submit certain information, pursuant to Sec. 50.54(f) of Title 10 of the Code of Federal Regulations (10 CFR 50.54(f)), concerning their findings regarding potential pathways for inadvertent RCS drain-down and the suitability of configuration control and operating practices during reactor shutdown cooling. This information will enable NRC staff to verify whether addressees comply and conform with NRC regulatory and license requirements; i.e., are adequately maintaining the residual heat removal safety function to transfer fission product decay heat and other residual heat from the reactor core (General Design Criterion (GDC) 34 of Appendix A to 10 CFR 50), and the ECCS to provide abundant emergency core cooling when required (GDC 35 of Appendix A to 10 CFR part 50). The NRC is seeking comment from interested parties regarding both the technical and regulatory aspects of the proposed generic letter presented under the Supplementary Information heading. The proposed generic letter has been endorsed by the Committee to Review Generic Requirements (CRGR). The relevant information that was sent to the CRGR will be placed in the NRC Public Document Room. The NRC will consider comments received from interested parties in the final evaluation of the proposed generic letter. The NRC's final evaluation will include a review of the technical position and, as appropriate, an analysis of the value/impact on licensees. Should this generic letter be issued by the NRC, it will become available for public inspection in the NRC Public Document Room.
Comment period expires March 17, 1997. Comments submitted after this date will be considered if it is practical to do so, but assurance of consideration cannot be given except for comments received on or before this date.
Muhammad M. Razzaque (301) 415-2882.
Federal Register
Vol. 62, no. 31
Office of the Federal Register, National Archives and Records Administration
1997-02-14
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292 p.
Table of Contents:
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https://www.govinfo.gov/app/details/FR-1997-02-14
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000582072
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https://www.govinfo.gov/app/details/FR-1997-02-14
https://www.govinfo.gov/content/pkg/FR-1997-02-14/pdf/FR-1997-02-14.pdf
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