ML20117Q076
| ML20117Q076 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 01/31/1991 |
| From: | Holahan G Office of Nuclear Reactor Regulation |
| To: | Capra R Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20116D885 | List:
|
| References | |
| FOIA-96-237 TAC-68525, TAC-68526, NUDOCS 9102050079 | |
| Download: ML20117Q076 (2) | |
Text
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('joi NUCLEAR REGULATORY COMMISSION UNITED STATES n
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'j WASHINGTON, D, C. 20655
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January 31, 1991 Docket Nos.:
50-317/318 l
l MEMORANDUM FOR:
Robert A. Capra, Project Director Project Directorate I-1 l
l Division of Reactor. Projects I/II FRON:
Gary M. Holahan, Deputy Director l
l Division of Systems Technology 1
SUBJECT:
SUPPLEMENTAL SAFETY EVALUATION OF THE CALVERT 1
CLIFFS NUCLEAR POWER PLANT, RESPONSE TO THE l
-STATION BLACK 0UT RULE l
Plant Name:
Calvert Cliffs Nuclear Power Plant, Units 1 & 2 Utility:
Baltimore Gas and Electric Company Docket Nos.:
50-317/318-l TAC Nos.:
68525/68526 Licensing Status:
OR Resp. Directorate: PD I-1/DRP Project Manager:
D. Mcdonald Review Branch:
SELB/ DST Review Status:
Complete The NRC staff's Safety Evaluation (SE) pertaining to the licensee's initial responses to the Station Blackout (SBO) Rule,10 CFR 50.63, was transmitted to the licensee by letter dated October 10, 1990. The staff found the licensee's proposed method of coping with an SB0 to be acceptable, subject to the satis-factory resolution of several recommendations which were itemized in the staff's SE. The licensee responded to staff's SE, and specifically to the recommendations, by letters from G. C. Creel, Baltimore Gas and Electric, to the Document Control Desk, U. S. Nuclear Regulatory Commission, dated November 13, 1990 and Deceinber 13, 1990.
We find the licensee's responses to the staff's SE to be acceptable as described f a the attached Supplemental Safety Evaluation (SSE). However, the staff has stated some " understandings" in this SSE which.the licensee should i
review and respond to if their understanding is different than the staffs.
These understandings are that (1) the modifications associated with the existing EDG that is proposed as the AAC source (as well as the new EDGs) will i
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Contact:
A. Toalston, SELB/ DST X20776 l
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i Robert A. Capra January 31, 1991 be submitted for staff review, (2) that the documentation associated with the testing of the AAC source will be maintained with the other 5B0 documentation and (3) for the calculated temperature values expected in the nine areas con,
taining SB0 equipment, reasonable assurance has been assessed of the operabili.
ty of SB0 response equipment. Also, it is noted that Technical Specification changes associated with the overall project will be submitted for staff review. is the SALP input for this review.
E l
Gary M. Holahan, Deputy Director l
Division of Systems Technology
Enclosures:
As stated cc:
A. Thadani S. Varga l
B. Boger D. Mcdonald A. Gody (SALP only)
J. Raval 1
l P. Tam l
Distribution:
l Docket File Nos. 50-317/318 SELB Rdg.
l A.Toalston(PF)(2)
J. E. Knight P. Gill F. Rosa 1
C.McCracken(SPLB)
R. C. Jones (SRXB)
G. Holahan 1
Calvert Cliffs S/F C :SEL DST
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- 1/J//91 0FFICIAL RECORD COPY Document Name: CCSB0SSE i
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