ML20012A203

Application for Amends to Licenses DPR-71 & DPR-62,changing Bases Section of Tech Spec 3/4.8, Electrical Power Sys, Consisting of Clarification of Surveillance Requirement 4.8.1.1.2.d.1 Re Emergency Diesel Generator During Shutdown

ML20012A203
Person / Time
Site:	Brunswick
Issue date:	02/23/1990
From:	Loflin L CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20012A204	List: ML20012A203 ML20012A205
References
NLS-90-014, NLS-90-14, NUDOCS 9003080503
Download: ML20012A203 (3)

Text

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c,; , a-7 o L Carolina Power & Light Company FEB 2 3 1990.

SERIAL: liLS90-014 United States Nuclear Regulatory Commission ATTENTION: Document Control Desk

< Washington, DC- 20555 i BRUNSWICK STEAM ELECTRIC PLANT, UNIT NOS. 1 AND 2 DOCKET-NOS. 50-325 & 50 324/ LICENSE HOS. DPR 71 & DPR-62 3ASES CilANGE'- EMERGENCY DIESEL GENERATOR SURVEILLANCE Centlemen:

-Carolina Power & Light Company hereby proposes a change to the Bases Section for Technical Specification 3/4.8, " Electrical Power Systems." This change consists of a clarification of Surveillance Requirement 4.8.1.1.2.d.1 with 1 respect to the term "during shutoown." The revised Bases pages are included in Attachment 1.

y Surveillance Requirement 4.8.1.1.2.d.1 requires that the emergency diesel generators be inspected at least once per 18 months "during shutdown."

Brunswick 1 and Brunswick-2 were designed and are operated with a shared configuration of the four emergency diesel generators. This is reflected in Technical Specification 3.8.1.1 which requires that all four emergency diesel generators be operable when one or both units are operating and establishes allowed out of service times for inoperable emergency diesel generators.

Given this Limiting condition for Operation, inspection of any of the four emergency diesel generators could be interpreted as requiring shutdown of both units.

The proposed change'to Bases Section'3/4.8 clarifies that "during shutdown" means the shutdown of Brunswick-1 for inspection of emergency diesel generators 1 and.2; and the shutdown of Brunswick-2 for the. inspection of emergency' diesel generators 3 and 4. This definition is consistent with.the-normal configuration of the electrical distribution system. Emergency diesel generators 1, 2, 3, and 4 supply emergency buses El, E2, E3, and E4 respectively. Emergency-buses El and E2 are associated with Brunswick-1 and E3.and E4 with Brunswick-2. The emergency buses for each unit are capable of being cross-tied between units (same division) or within the unit (different divisions). In addition, selected redundant loads, such as two residual heat removal pump and two service water pump are normally supplied by the opposite

' unit's emergency buses.

While performing the required inspection of a given emergency diesel generator, the loads associated with that emergency diesel generator are subject to their Limiting' Condition for Operation requirements. Thus, if a Brunswick-1 emergency diesel generator is removed from service, the applicable action statements for both Brunswick-1 and Brunswick-2 are implemented due to 411 FayettevHle Street

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• Raleign. N. C 07602

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[ inoperability of the emergency. power source to the emergency bus. :1 This is the same action that would be required. if the emergency diesel generator was inoperable while both units are operating.

Please refer any questions regarding this submittal to Mr..M. R. Oates at ,

(919) 546 6063.

g Yours very truly, d ,

Leonard I. flin l Manager Nuclear Licensing Section '

LIL/ MAT ,

Enclosure cc: ~ Mr. S. D. Ebneter Mr. W.'ll. Ruland Mr._E. G. Tourigny ,

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JATTACHMENT 1~

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BRUNSWICK STEAM ELECTRIC PIANT, UNITS 1 AND -2 2<

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NRC DOCKETS.50-325 & 50-324 -;

i '- J'  ; OPERATING LICENSES DPR-71'& DPR 62- .

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• BASES-' CHANGE a-EMERGENCY DIESEL-GENERATOR SURVEILLANCE

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