ML20154C971

Suppl to Special Rept 88-03 Re Removal of CO2 Fire Suppression Sys from Zones 75-80 Bringing Nuclear Svc Electric Bldg Into Compliance w/10CFR50,App R Requirements

ML20154C971
Person / Time
Site:	Rancho Seco
Issue date:	09/06/1988
From:	Keuter D SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
AGM-NPP-88-467, NUDOCS 8809150100
Download: ML20154C971 (1)

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r&SMUD SACRAMENTO MUNICIPAL UTILITY DISTRICT C 6201 S Street, necwev hj830, Sacramento CA 950521830,1916) 452 3211 AN ELECTRI Y$7dM* SERVING THE HEART OF CALIFORNIA AGM/NPP 88-467 83 SEP 7 A9: 42 September 6, 1988 U. S. Nuclear Regulatory Cc rnission Attn: J. B. Martin, Regional Administrator Regicn V 1450 Maria Lane, Suite 210 Halnut Creek, CA 94596 Docket No. 50-312 Rancho Seco Nuclear Generating Station License No. DPR-54 SUPPLEMENT TO SPECIAL REPORT NUMBER 88-03: REMOVAL OF CO2 FIRE SUPPRESSION SYSTEMS FROM ZONES 75, 76, 77, 78, 79, and 80

Dear Mr. Hartin:

In March 1988, the District submitted Special Report 88-03. The report stated that the Nuclear Service Electrical Building (NSEB) CO2 fire suppression systems were removed from service to bring the NSEB into compliance with the requirements of 10 CFR 50, Appendix R, Section IIIG.

The District has further evaluated NSEB fire protection requirements. Based on this evaluation, the District decided to permanently eliminate the CO2 fire suppression systems from zones 75, 76, 77, 78, 79, and 80. With the CO2 systems eliminated from tFese zones, the NSEB continues to meet the requirements of Appendix R.

An Engineering Change Notice, Safety Analysis Report and Technical Specification Amendment are being prepared to implement and document permanent disablement of the NSEB CO2 systems. Until the Technical Specification Amendment is approved, the CO2 systems will remain inoperable with compensatory measures in place.

Members of your staff with questions requiring additional information or clarification may contact Kurt Zimmermann at (209) 333-2935, extension 4627.

Sincerely, 8809150100 080906 PDR 8 ADOCK 05000312 PNU N dT r. e m l C1 Dan R. Keuter L Assistant General Manager, Add F Nuclear Power Production cc: Director of Nuclear Reactor Regulation, NRR, Washington A. D'Angelo, NRC, Rancho Seco I g l

RANCHO SECO NUCLEAR GE.JERATING STATION O 1444o Ten Cmes Rc3d, Herald, CA 95638 9799;(209) 333 2935