ML20137L199

Application for Amend to License DPR-54,consisting of Rev 1 to Proposed Amend 137,adding Water Deluge Sys in Area of Auxiliary Feedwater Pumps,Per Discussion at 850206 Meeting on Fire Protection

ML20137L199
Person / Time
Site:	Rancho Seco
Issue date:	11/25/1985
From:	Latham W SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	Thompson H Office of Nuclear Reactor Regulation
Shared Package
ML20137L201	List: ML20137L199 ML20137L222
References
RJR-85-544, TAC-59510, NUDOCS 8512030381
Download: ML20137L199 (5)

Text

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Y esuu. SACRAMENTO MUNICIPAL UTILITY DISTRICT O 6201 S Street, P.o. Box 15830, Sacramento CA 95852-1830,(916) 452-3211 AN ELECTRIC SYSTEM SERVING THE HEART OF CALIFORNIA i

RJR 85-544-November 25, 1985 DIRECTOR OF NUCLEAR REACTOR REGULATION ATTENTION HUGH L THOMPSON DIVISION OF NUCLEAR LICENSING V S NUCLEAR REGULATORY COMMISSION WASHINGTON DC 20555 DOCKET N0. 50-312 LICENSE NO. DPR-54 PROPOSED AMENDMENT NO. 137, REVISION 1 Or: August 1,1985, the Sacramento Municipal Utilities District submitted Proposed Amendment No. 137 which addressed changes to the Technical Specifi-cation pursuant to 10 CFR 50, Appendix R, and cited specific details which were identified in the Rancho Seco Fire Hazards Analysis Report (FHAR).

The enclosed Proposed Amendment No. 137, Revision 1, addresses the addition of a water deluge system in the area of the auxiliary feedwater pumps. This addition was discussed in a meeting on fire protection held with the NRC on February 6, 1985. Fire detectors, also discussed in the February 6th meeting, were addressed in our transmittal of August 1, 1985.

-This revision also includes minor typographical. corrections and editing of the original submittal, all of which are described on Attachment III. Attachments I and II picvide'a safety analysis and No Significant Hazards Evaluation, respectively.

Pursuant to 10 CFR 50.91(b)(1), the Radiological Health Branch of the California State Department of Health Services has been informed of this pro-posed amendment by copy of this submittal.

The District has determined that no license fees are required since a check for $150.00 was sent to the Commission with the initial submittal of Proposed Amendment No. 137.

8512030381 G51125 ob PDR ADOCK 05000312- Dc 1 P PDR , (

- RANCHO SECO NUCLEAR GENERATING STATION [] 14440 Twin Cities Road, Herald, CA 95638-9799;(209) 333-2935 h

H L Thompson November' 25, 1985 Should you require any further information with respect to this proposed amendment, please contact Mr. Ron W. Colombo at Rancho Seco Nuclear Generating Station Unit No. 1.

b)Udaia IL kat WILLIAM K. LATHAM ACTING GENERAL MANAGER Attachments (3)

Subscribed a d sworn to b fore me """"""""*

this cA 6 day of , 1985 + =m"n=; - " " "

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- N My Commission Egir:s i brcry 13,1988 U

<-- -2cre aamuscamm e Notary Public 51--~ 4 O

F ATTACHMENT I SAFETY ANALYSIS The fire protection components comprising the water deluge system in the area of the auxiliary feedwater (AFW) pumps are non-Class 1 and have no intertie with safety-related circuits or equipment. The potential adverse effects to safety-related equipment resulting from the installation of the water deluge components _are inadvertent operation and physical damage to safety-related equipment caused by non-seismic Category I equipment falling onto or otherwise striking the shfety-related equipment in the event of an SSE.

Since the safety-related equipment within the spray pattern of the water deluge system is located in an area not sheltered from rain or other severe weather con-ditions, and is so designed, inadvertent operation of the water deluge system will not adversely affect the operating condition of the safety-related equip-ment.

Water deluge system piping routed in the area of the safety-related equipment is designed for supports in accordance with seismic II/I criteria to preclude pipes from falling and damaging the safety-related equipment Based on the foregoing, the potential failure modes of the water deluge system are judged to constitute no danger to the operation of the safety-related equip-ment, and in providing the fire protection function improves plant safety and reliability by mitigating the effects of fire in the AFW pump area.

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ATTACl#ENT 'II NO SIGNIFICANT HAZARDS CONSIDERATION Installation of the water deluge system in the area of the auxiliary feed-water pumps has been: determined to involve "No Significant Hazards

~ Consideration." The bases for this determination are:

1. The installation does.not. involve a significant increase in the

' probability or consequences of an accident previously evaluated,

2. .the installation does-not create the possibility of a new or different

. kind of. accident from anyzaccident previously evaluated, and

-3. the installation does notiinvolve a significant reduction in a margin of safety.

'The presentations in this revision of the minor typogr.aphical corrections and

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editing of.the original submittal are judged to be purely administrative changes which, by the: Commission's guidance in:10 CFR 50.92, are categorized as'not likely to involve significant hazards considerations.

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ATTACl#ENT III DESCRIPTION OF PROPOSED CHANGES

.l . Table'of Contents, page iv; Changed page designation for Section 3.14.5, Fire Hose Stations, from 3-57 to 3-56a and changed the title of Section 3.14.6 from Fire Barrier Penetration Fire Seals to Fire Rated Assemblies.

2. List of Tables, page ix; Added followir.g tables:

a. 3.14 Water Suppression Zones, pages 3-56b'and c.

Lb. 3.14 Carbon Dioxide Suppression Zones, pages 3-56d and e.

c. 3.14-4 . Fire Hose Stations, pages 3-57, 3-57a and b. l

'3. Section 3.14.2.2, page 3-54; Changed Specification 6.9.5.e on third line l to Specificat_ ion 6.9 and changed Specification 6.9 on fifth line to l Specification 6.9.5.E. .(These numbers were mistakenly reversed in AmenJ- >

ment No. 35.)

4. Section 3.14.2.3, page 3-54; 'Added all of Section 3.14.2.3d which had been

-deleted erroneously in the previously submitted proposed amendment.

5. Table 3.14-1, page 3-55c; At Detection Zone 110, c' hanged the quantity of the flame detectors from 5, which were temporarily installed, to 4, which comprise the permanent quantity.

6. Table 3.14-2, pages 3-56b and c; Corrected Table number designation on page 3-56b from Table 3.14-3 to 3.14-2, and deleted alpha-designations

a. through'z.

7. Table 3.14-3, pages 3-56d and e; Deleted alpha-designations a. through u.

8. Section 4.18.6, page 4-62; Changed the term " Fire Barrier Penetrations" to

" Fire Rated Assemblies" in four places to be consistent with the termin-ology of-Section 3.-14.6 as submitted in the originally proposed' amendment.

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