ML043280631
| ML043280631 | |
| Person / Time | |
|---|---|
| Issue date: | 12/06/2004 |
| From: | Black S Division of Systems Safety and Analysis |
| To: | Pietrangelo A Nuclear Energy Institute |
| Hafera T, SPLB/DSSA/NRR, 415-4097 | |
| References | |
| GL-04-002 | |
| Download: ML043280631 (2) | |
Text
December 6, 2004 Mr. Anthony R. Pietrangelo Nuclear Energy Institute 1776 I Street, NW Suite 400 Washington, DC 20006-3798
SUBJECT:
PRESSURIZED WATER REACTOR CONTAINMENT SUMP EVALUATION METHODOLOGY
Dear Mr. Pietrangelo:
By letter dated May 28, 2004, you submitted a guidance report, Pressurized Water Reactor Sump Performance Evaluation Methodology, that is intended to allow pressurized water reactor plant licensees to address and resolve Generic Safety Issue (GSI) 191 in an expeditious manner. The report and the enclosed U.S. Nuclear Regulatory Commission (NRC) staff safety evaluation (SE) of the report relate to NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors, issued September 13, 2004.
The guidance report is divided into two primary parts, the baseline evaluation and the refinements section. The NRC staff has reviewed the report and determined that portions of the report are acceptable as is and other portions needed additional justification and/or modification. Therefore, the staff has identified conditions and limitations and required modifications in the SE for those report portions that needed additional justification and/or required modifications.
The staff concludes that the guidance report, as approved in accordance with the staff SE, provides an acceptable overall guidance methodology for the plant-specific evaluation of emergency core cooling system or core spray system sump performance following postulated design basis accidents.
Contact Mr. John N. Hannon at 301-415-1992 if you have any questions.
Sincerely,
//RA//
Suzanne C. Black, Director Division of Safety Systems Analysis Office of Nuclear Reactor Regulation
Enclosure:
Safety Evaluation
Mr. Anthony R. Pietrangelo Nuclear Energy Institute 1776 I Street, NW Suite 400 Washington, DC 20006-3798
SUBJECT:
PRESSURIZED WATER REACTOR CONTAINMENT SUMP EVALUATION METHODOLOGY
Dear Mr. Pietrangelo:
By letter dated May 28, 2004, you submitted a guidance report, Pressurized Water Reactor Sump Performance Evaluation Methodology, that is intended to allow pressurized water reactor plant licensees to address and resolve Generic Safety Issue (GSI) 191 in an expeditious manner. The report and the enclosed U.S. Nuclear Regulatory Commission (NRC) staff safety evaluation (SE) of the report relate to NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors, issued September 13, 2004.
The guidance report is divided into two primary parts, the baseline evaluation and the refinements section. The NRC staff has reviewed the report and determined that portions of the report are acceptable as is and other portions needed additional justification and/or modification. Therefore, the staff has identified conditions and limitations and required modifications in the SE for those report portions that needed additional justification and/or required modifications.
The staff concludes that the guidance report, as approved in accordance with the staff SE, provides an acceptable overall guidance methodology for the plant-specific evaluation of emergency core cooling system or core spray system sump performance following postulated design basis accidents.
Contact Mr. John N. Hannon at 301-415-1992 if you have any questions.
Sincerely, Suzanne C. Black, Director Division of Safety Systems Analysis Office of Nuclear Reactor Regulation
Enclosure:
Safety Evaluation PACKAGE NO: ML043280641 ACCESSION NOS: ML043280631; ML043280007; ML043280008; ML043280009; ML043280010; ML043280011 ML043280012; ML043280013, ML043280015; ML043280016; ML043280017; ML043280018 OFFICE NRR:DSSA:SPLB NRR:DLPM:LPD3 NRR:DSSA:SPLB NRR:DSSA:SPLB NRR:DSSA NAME THafera JHopkins DSolorio JHannon SBlack DATE 11/ 12 /2004 11/ 24 /2004 11/ 29 /2004 11/ 29 /2004 12/ 06 /2004 OFFICIAL RECORD COPY