ML20210Q769
| ML20210Q769 | |
| Person / Time | |
|---|---|
| Site: | River Bend  |
| Issue date: | 08/11/1999 |
| From: | Robert Fretz NRC (Affiliation Not Assigned) |
| To: | Edington R ENTERGY OPERATIONS, INC. |
| References | |
| GL-88-20, TAC-M83667, NUDOCS 9908160110 | |
| Download: ML20210Q769 (4) | |
Text
1 l
}p)!ef Mr. Randall K. Edington bl "9"
l Vice President - Operations Entergy Operations, Inc.
River Bend Station P. O. Box 220 St. Francisville, LA 70775
SUBJECT:
RIVER BEND STATION, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION - INDIVIDUAL PLANT EXAMINATION OF EXTERNAL EVENTS SUBMITTAL (TAC NO. M83667)
Dear Mr. Edington:
4 In a letter dated February 26,1998, Entergy Operations, Inc. (EOI), submitted its response to a request for additional information (RAI) for the River Bend Individual Plant Examination External Events (IPEEE), under Generic Letter (GL) 88-20, Supplement 4, dated June 28,1991. Based upon its review of your response, the staff is unable to conclude at this time that you have met the intent of Supplement 4 to GL 88-20. Therefore, your response to the enclosed questions (as a follow-up to the previous RAI) is necessary in order to complete the staff's review.
l It is requested that you provide, within 60 days of your receipt of this letter, a schedule for your response, which takes into consideration the recently developed Electric Power Research j
institute's guidance referenced in the enclosed RAl.
Sincerely, (Original signed by)-
Robert J. Fretz, Project Manager, Section 1 Project Directorate IV & Decommissicning Division of Licensing Project Management j
Office of Nuclear Reactor Regulation Docket No. 50-458 i
i
Enclosure:
Request for AdditionalInformation j
cc w/ encl: See next page 1
1 DISTRIBUTION Docket File PD IV-1 Reading K. Brockman, RIV PUBLIC S. Black A. Rubin (RES/DRAA/PRAB)
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- 4 UNITED STATES NUCLEAR REGULATORY COMMISSION g
2 WASHINGTON, D.C. 20656-0001 O
August 11, 1999 l
Mr. Randall K. Edington i
Vice President - Operations Entergy Operations, Inc.
River Bend Station P. O. Box 220 i
St. Francisville, LA 70775
SUBJECT:
RIVER BEND STATION, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION - INDIVIDUAL PLANT EXAMINATION OF EXTERNAL EVENTS SUBMITTAL (TAC NO. M83667)
Dear Mr. Edington:
in a letter dated February 26,1998, Entergy Operations, Inc. (EOl), submitted its response to a request for additional information (RAl) for the River Bend Individual Plant Examination External Events (IPEEE), under Generic Letter (GL) 88-20, Supplement 4, dated June 28,1991. Befsed upon its review of your response, the staff is unable to conclude at this time that you have met the ir. tent of Supplement 4 to GL 88-20. Therefore, your response to the enclosed questions (as a follow-up to the previous RAl) is necessary in order to complete the staff's review.
It is requested that you provide, within 60 days of your receipt of this letter, a schedule for your response, which takes into consideration the recently developed Electric Power Research Institute's guidance referenced in the enciesed RAl.
Sincerely,
/
Robert J. Fretz, Project Manager, Section 1 Project Directorate IV & Decommissioning Division of Licensing Project Management Office of Nuclear Raactor Regulation Docket No. 50-458
Enclosure:
Request for Additional Information cc w/ encl: See next page 9
~
River Bend Station cc:
Winston & Strawn Executive Vice President and 1400 L Street, N.W.
Chief Operating Officer Washington, DC 20005-3502 Entergy Operations, Inc.
P. O. Box 31925 Manager-Licensing Jackson, MS 39286 Entergy Operations, Inc.
River Bend Station General Manager - Plant Operations P. O. Box 220 Entergy Operations, Inc.
St. Francisville, LA 70775 River Bend Station P. O. Box 220 Senior Resident inspector St. Francisville, LA 70775 P. O. Box 1050 St. Francisville, LA 70775 Director - Nuclear Safety Entergy Operations, Inc.
President of West Feliciana River Bend Station Police Jury P. O. Box 220 P. O. Box 1921 St. Francisville, LA 70775 St. Francisville, LA 70775 Vice President - Operations Support Regional Administrator, Region IV Entergy Operations, Inc.
U.S. Nuclear Regulatory Commission P. O. Box 31995 611 Ryan Plaza Drive, Suite 1000 Jackson, MS 39286-1995 Arlington,TX 76011 Attomey General Ms. H. Anne Plettinger State of Louisiana 3456 Villa Rose Drive P. O. Box 94095 Baton Rouge, LA 70806 Baton Rouge, LA 70804-9095 Administrator Louisiana Radiation Protection Division 4
P. O. Box 82135 Baton Rouge, LA 70884-2135 Wise, Carter, Child & Caraway P. O. Box 651 Jackson, MS 39205 May 1999
v REQUEST FOR ADDITIONAL INFORMATION RIVER BEND STATION. UNIT 1 INDIVIDUAL PLANT EXAMINATION OF EXTERNAL EVENTS (IPEEE)
Based on your IPEEE submittal and the response to the February 26,1998, request for additonal information (RAI) for the River Bend IPEEE, the staff is unable to conclude at this time that you have met the intent of Supplement 4 to Generic Letter 88-20. Your response to the following fire protection RAI (follow-up to the previous RAI) is necessary in order to complete our review.
Questions:
1.
The response to the previous RAI Question 1 relating to the assumed heat release rates from electrical cabinet fires, reiterated information provided in the submittal and/or traceable to EPRI [ Electric Power Research Institute] Fire PRA [probabilistic risk assessment) Implementation Guide, without responding to the original RAl. During the period between review of the submittal and the response to this question, the matter of heat release rates has been under discussion between the NRC and EPRI. Based on such discussions, a new EPRI report entitled " Guidance for Development of Response to Generic Request for Additional information on Fire Individual Plat Examination for External Events (IPEEE)," dated May 1999, was recently issued and should be helpful in formulating a new response. Please consider the new guidance and submit a revised response to the original question.
2.
The response to the previous RAI Question 4 relating to the basis for qualitative screening, cites a reference to the fire induced vulnerability revaluation (FIVE) methodology, which is incorrect and inconsistent with that approved for IPEEE submittals. The figure cited, Figure 5.1, provides the cited guidance but was taken from the April 1992 draft of the FlVE methodology. The September 1993 version was approved for IPEEE submittals by the NRC and shows, in the same figure as that cited, that fire-initiated events leading to plant trips are to be considered in qualitative screening. With the inclusion of such criteria it is unlikely that typically important areas, such as those in the turbine buildbg, would be qualitatively screened.
Please provide an analysis of those previously screened areas that would be retained under screening performed in accordance with the approved methodology.
High Wind, Flood and Other External Events (HFO)
There is no RAI in the HFO area.
Seismic There is no RAI in the seismic area.
ENCLOSURE