ML20154D263

Forwards Request for Addl Info Re 861202 & s Discussing Updated Fire Hazards Analysis

ML20154D263
Person / Time
Site:	Rancho Seco
Issue date:	05/11/1988
From:	Kalman G Office of Nuclear Reactor Regulation
To:	Andognini G SACRAMENTO MUNICIPAL UTILITY DISTRICT
References
NUDOCS 8805190121
Download: ML20154D263 (3)

Text

___ .

l

\ May 11, 1988 1

Docket No. 50-312 1 l

Mr. G. Carl Andognini Chief Executive Officer, Nuclear l Rancho Seco Nuclear Generating Station l 14440 Twin Cities Road Herald, California 95638-9799

SUBJECT:

FIRE HAZARDS ANALYSIS, REQUEST FOR INFORMATION The NRC staff is in the process of reviewing a Rancho Seco Nuclear Gener6 ting Station Updated Fire Hazards Analysis (UFHA) which was submitted by the l l

Sacramento Municipal Utility District by letters dated December 2,1986 and l l

September 22, 1987. Enclosure 1 to this letter includes questions generated by the staff during our review of your submittals. Please respond to these l l

questions to enable the staff to complete the UFHA review.

Sincerely, I

i original signed by George Kalman I George Kalman, Project Manager Project Directorate V t Division of Reactor Projects - III, )

IV, V and Special Projects l

See next page i

DISTRIBUTION

( Docket J11e; [ ' ]

NRC & LPDRs PD5 Reading DMCrutchfield GMHolahan JLee OGC-White Flint GKalman EJordan JPartlow ACRS(10)

DRSP PD b:PDV GK . :dr 4]hton 4f lll l88 0FFICIAL RECORD COPY g3 2 j Y

i Mr. G. Carl Andognini Rancho Seco Nuclear Generating Chief Executive Officer, Nuclear Station Sacramento Municipal Utility District 14440 Twin Cities Road Herald, California 95638-9799 +

cc:

Mr. David S. Kaplan, Secretary Mr. John Bartus and General Ccunsel Ms. JoAnne Scott Sacramento Municipal Utility Federal Energy Regulatory Commission District 825 North Capitol Street, N. E.

6201 S Street Washington, D.C. 20426 P. O. Box 15830 Sacramento, California 95813 Mr. Barclay S. Lew Pacific Gas and Electric Company Thomas A. Baxter, Esq.

Shaw, Pittman, Potts & Trowbridge 77 Beale Street (333/A613)

San Francisco, CA 94106 2300 N Street, N.W.

Washington, D.C. 20037 Ms. Helen Hubbard P. O. Box 63 Mr. Steven Crunk Sunol, California 94586 Manager, Nuclear Licensing Sacramento Municipal Utility District Rancho Seco Nuclear Generating Station 14440 Twin Cities Road Herald, California 95638-9799 Mr. Robert B. Borsum, Licensing Representative Babcock & Wilcox Nuclear Power Division 1700 Rockville Pike - Suite 525 Rockville, Maryland 20852 Resident inspector / Rancho Seco c/o U. S. N. R. C.

14440 Twin Citios Poad Herald, Califernia 95638 Regional Administrator, Region V U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek, California 94596 Mr. Jack McGurk, Acting Chief Radiological Health Branch State Department of Health Services 714 P Street Office Building f8 Sacramento, California 95814 Sacramento County Board of Supervisors 700 H Street, Suite 2450 Sacramento, California 95814 l

l

ENCLOSURE 1 CHEMICAL ENGINEERING BRANCH REQUEST FOR ADDITIONAL INFORMATION EVALUATION OF REVISED UFHA - RANCHO SECO

1. The licensee states that the Updated Fire Hazards Analysis (UFHA) includes analyses for several new areas, including the Nuclear Services Electrical Building. Since these areas were not included in the 1977 Fire Hazards Analysis (FHA) the licensee should describe how i5 fire protection for these areas conforms with Appendix A to Branch Technical Position APCSB.

This response does not need to include the TDI Diesel Generator Building, since this has already been evaluated by the staff.

2. The licensee has referenced a nun;ber of documents, related to the post-fire safe shutdown methodology, that were not listed in the July 1985 (UFHA). The licensee should identify how this methodology has changed from that which was evaluated by the staff in the May 19, 1986 safety evaluation.

3. The licensee states that the UFHA incorporates changes in combustible loading since the previous FHA. The licensee should identify where these loadings have increased and the amount of change.

4. The licensee states that the Updated UFHA identifies changes in fire protection equipment since the previous FHA. The licensee should identify if any fire protection equipment has been deleted.

5. Item (6) on page 1-2 states that charges in the fire ratinos of Appendix R fire barriers have been incorporated into the UFHA. The licensee should identify where if any, barrier retings have been reduced along with justification for acceptability of the new rating.

1

6. The licensee should identify if the changes in fire area configuration in the UFHA, from those in the 1977 FHA, effect any plant commitments I to the guidelines of the Branch Technical Position APCSB 9.5-1.

l l

1 1

I