ML13324A558
| ML13324A558 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 02/15/1985 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Baskin K SOUTHERN CALIFORNIA EDISON CO. |
| References | |
| LSO5-85-02-013, LSO5-85-2-13, NUDOCS 8502210022 | |
| Download: ML13324A558 (8) | |
Text
ptREGU UNITED STATES 0
NUCLEAR REGULATORY COMMISSION C
fWASHINGTON, D. C. 20555 FEB 1 5 1985 Docket No.:
50-206 LS05 02-013 Mr. Kenneth P. Baskin, Vice President Nuclear Engineering Safety and Licensing Department Southern California Edison Comapny 2244 Walnut Grove Avenue Post Office Box 800 Rosemead, California 91770
Dear Mr. Baskin:
SUBJECT:
SAN ONOFRE NUCLEAR GENERATING STATION UNIT 1 - SEISMIC ANALYSES As you know, the NRC is conducting an investigation regarding SCE's conduct in the preparation and reporting of the Balance of Plant Mechanical Equipment and Piping (BOPMEP) evaluation, which was submitted on April 30, 1982, in the context of the overall SEP seismic reevaluation effort. In order to complete this investigation, certain technical information is necessary which requires your assistance.
We request that you make available the original design analyses identified in Tables 1-4 of the enclosure to the letter from J. T. Head (SCE) to R. H.
Engelken (NRC Region V), dated September 9, 1979, for our review: if necessary, we would then request that you arrange to have your contractor, the Bechtel Power Corporation, perform the analyses described in the enclosures. identifies the initial scope of possible analyses. Enclosure 2 describes the general methods and criteria for these analyses, which would be performed consistent with the original licensing basis (0.25g ground motion, equivalent static analysis, B31.1 criteria) and the plant configuration which existed at the time the BOPMEP review was in progress.
Based on a preliminary review of the original design analyses, we will determine whether that information is sufficiently comparable to the BOPMEP analyses. If not, we request that Bechtel perform the specified analyses under the direction and supervision of the Franklin Research Center (FRC) who is the NRC staff's technical consultant in this matter. If our prelimi nary evaluation indicates a need for additional or different analyses, we will request such analyses in separate correspondence.
8502210022 850215 PDR ADOCK 05000206 P
0 Mr. Kenneth P. Baskin
- 2 If requested, we would expect you to undertake these analyses voluntarily to provide an expeditious resolution of this issue. Otherwise, it will be necessary for us to take appropriate action, in accordance with Section 161c of the Atomic Energy Act, to obtain the technical information necessary to complete this investigation. Please contact Mr. Philip Joukoff, Investigator Region V (415-943-3725) to arrange a meeting to review the original design analyses and discuss the arrangements that would be required to perform the specified analyses, should we conclude they are necessary. If you have any questions concerning technical issues relating to this evaluation, please contact Mr. Christopher Grimes (301-492-7464), who is the project officer for the FRC contract.
Sincerely Dennis M. Crutchfield, sistant Director for Safety Assessment Division of Licensing
Enclosures:
As stated cc w/enclosures:
See next page
Mr. Kenneth P. Baskin cc Charles R. Kocher, Assistant Joseph 0. Ward, Chief General Counsel Radiological Health Branch James Beoletto, Esquire State Department of Health Southern California Edison Company Services Post Office Box 800 714 P Street, Office Bldg. 8 Rosemead, California 91770 Sacramento, California 95814 David R. Pigott Orrick, Herrington & Sutcliffe 600 Montgomery Street San Francisco, California 94111 Dr. Lou Bernath San Diego Gas & Electric Company P. 0. Box 1831 San Diego, California 92112 Resident Inspector/San Onofre NPS c/o U.S. NRC P. 0. Box 4329 San Clemente, California 92672 Mayor City of San Clemente San Clemente, California 92672 Chairman Board of Supervisors County of San Diego San Diego, California 92101 Director Energy Facilities Siting Division Energy Resources Conservation &
Development Commission 1516 -
9th Street Sacramento, California 95814 U.S. Environmental Protection Agency Region IX Office ATTN:
Regional Radiation Representative 215 Freemont Street San Francisco, California 94105 John B. Martin, Regional Administrator Nuclear Regulatory Commission, Region V 1450 Maria Lane Walnut Creek, California 94596
.ANALYSES TO BE PERFORMED The following cases, selected from the BOPMEP report, should be analyzed.
PIPING BOPMEP Line No.
Table No.
Isometric System 811-8"-KN 5.3-1 Circulating Water 2071-2"-601 5.5-1 334476-3 Chemical and Volume Control 721-14"-HP 5.6-1 334762-0 Feedwater and Condensate 342-2"-EG 5.6-3 334429-1 Feedwater and Condensate SUPPORTS Support No.
BOPMEP Table or Data Point Line No.
No./Page No.
System 8-PS-19 3048-8"-152N 5.1-2/2 Auxiliary Coolant 8-PS-10 3086-6"-151R 5.1-2/6 Auxiliary Coolant 140 454-10"-KP 5.3-2/1 Circulating Water PS-57 728-8"-HP 5.7-2/1 Miscellaneous Water 1-737-UG-002 737-8"-HP 5.7-2/3 Miscellaneous Water 14-PS-4 6003-16"-151R 5.8-2/3 Safety Injection EQUIPMENT BOPMEP Component No.
Table No.
Identification E-20A/B 5.1-4 Component Cooling Water Heat Exchanger E-34 5.5-2 Seal Water Heat Exchanger ANALYSIS METHODOLOGY AND CRITERIA
- 1. For analysis purposes, the selected components should be reconstructed to the same conditions that existed during the conduct of the BOPMEP effort.
- 2. An equivalent static analysis should be performed using the original damping factors and design ground response spectra scaled to 0.25g with no factors applied to account for dynamic effects.
- 3. The ADLPIPE (or an equivalent) computer program with lumped mass finite element models may be used for the stress analysis.
- 4. Different loading cases and stress combinations due to the seismic analysis of the horizontal and vertical directions should be considered according to the original FSAR design criteria.
- 5. Results will be evaluated based on the original design code allowables of the plant, i.e., the 1955 ANSI B31.1 code.
FEB 151989 Mr. Kenneth P. Baskin
- 2 If requested, we would expect you to undertake these analyses voluntarily to provide an expeditious resolution of this issue. Otherwise, it will be necessary for us to take appropriate action, in accordance with Section 161c of the Atomic Energy Act, to obtain the technical information necessary to complete this investigation.
Please contact Mr. Philip Joukoff, Investigator Region V (415-943-3725) to arrange a meeting to review the original design analyses and discuss the arrangements that would be required to perform the specified analyses, should we conclude they are necessary. If you have any questions concerning technical issues relating to this evaluation, please contact Mr. Christopher Grimes (301-492-7464), who is the project officer for the FRC contract.
Sincerely Dennis M. Crutchfield, Assistant Director for Safety Assessment Division of Licensing
Enclosures:
As stated cc w/enclosures:
See next page
- SEE PREVIOUS CONCURRENCES
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Mr. Kenneth P. Baskin
- 2 If requested, we would expect you to undertake these analyses voluntarily.
Otherwise, it will be necessary for us to take appropriate action, in accordance with Section 161c of the Atomic Energy Act, to obtain the technical information necessary to complete this investigation.
Please contact Mr.
Philip Joukoff, Investigator-Region V (415-943-3725) to arrange a meeting to review the original design analyses and discuss the arrangements that would be required to perform the specified analyses, should we conclude they are necessary. If you have any questions concerning technical issues relating to this evaluation, please contact Mr. Christopher Grimes (301-492-7464), who is the project officer for the FRC contract.
Sincerely Ben Hayes irector Office f Investigation
Enclosures:
As stated cc w/enclosures:
See next page
- SEE PREVIOUS CONCURRENCES
- TELEPHONE CONCURRENCE FROM P. JOUKOFF ON 2/1/85, WITH CORRECTION SEPB:DL SEPB:DL ORB#5:C A6D:DL
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If requested, we would expect you to undertake these analyses voluntarily.
Otherwise, it will be necessary for us to take appropriate action, in accordance with Section 161c of the Atomic Energy Act, to obtain the technical information necessary to complete this investigation. Please contact Mr.
Philip Joukoff, Investigator-Region V (415-943-3725) to arrange a meeting to review the original design analyses and discuss the arrangements that would be required to perform the specified analyses, should we conclude they are necessary. If you have any questions concerning technical issues relating to this evaluation, please contact Mr. Christopher Grimes (301-492-7464), who is the project officer for the FRC contract.
Sincerely Ben Hayes, Director Office of Investigation
Enclosures:
As stated cc w/enclosures:
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