ML20083D200

Proposed Tech Spec Table 4.8-1, Diesel Generator Test Schedule

ML20083D200
Person / Time
Site:	Waterford
Issue date:	09/25/1991
From:	ENTERGY OPERATIONS, INC.
To:
Shared Package
ML20083D199	List: ML20083D197 ML20083D200
References
NUDOCS 9109300081
Download: ML20083D200 (4)

Text

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TABLE 4.8-1 DIESEL GENERATOR TEST SCHECULE NUMBER OF FAILURES IN NUMBER OF FAILURES IN LAST 20 VALID TESTS." j LAST 100 VALID TESTS

• EST FRE00ENCY*" i i1 ;4 At lesst once per 31 days ,

i 12 3 5- At least onco par 7 days **

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• Criteria-for determining number of failures and numoer of valid tests shall be in acccedance with Regulatory Position C.2.e of Regulatory Guide 1.108. Revision 1, August 1977, where the last 20 and 100 tests are determined on a per diesel generator basis. For the purposes of this - '

test schedule, only valid tests conducted after the Operating License

'~ issuance date shall be included in the computation of the "last 100 valid tests".- Entry-into this test schedule shall be made at the

-31 day test frequency. Increased test frequency for one diesel generator i shall not affe:t the test-frequeacy for the remaining diesel generator, even under the STAGGERED TEST BASIS criteria. .

• • This test frequency shall be maintained until seven consecutive failure-free

- cemands have been perfomed and the- number of-failures in the last 20 valic cemands has been reduced to one. '

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• • • For purposes of' determining the required test frequency, the previous test i-failure count may be reduced to zero if a comolete diesel overnaul-to- '

like-new conditions is completed, provided tnat the overnaul, incluaing i approoriate post-maintenance operation and testing, is specifically approvec ey the manufacturer and if acceptable reliability has been demonstrated. l The-reliability criterion shall be-successful completion of 14 consecutive i tests in a single series; 10 of these tests shall ce in accordance with  :

Surveillance Requirement 4.8.1.1.2a.4,5 ana 4 of these tests snail include the fast loading requirement described in the couole-asterisked (**) note ,

to surveillance requirement 4.8.1.1.2a. S. If this riterion is not satis-fieo during the first series of tests, any alternt e criterion used to ,

trans-value the failure count to zero may only be implemented with prior-acproval by.the NRC. l' g

t WATERFORO - UNIT 3 3/4 8-7 AMEN 0 MENT NO. T.2 9109300081 910925 PDR ADOCK 05000392 p PDR

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i TABLE 4.8 .1 01ESEL GENERATOR TEST SCHEDULE NUMBER OF FAILURES IN c , NUMBER OF FAILURES IN i LAST 20 VALID TESTS."b" ' LAST 100 VALIO TESTS

• TEST FkE00ENCY*** l 1

j i1 j i4 At least once per 31 days ~

)2,, Ar.o >5

_ At least once per 7 days **

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" Criteria for determining number of failures and number of valid tests shall be in accordance with Regulatory Position C.2.e of Regulatory Guide 1.108, Revision 1, August 1977, where the last 20 and 100 tests are I determined on a per diesel generator basis. For the purposes of this '

l test schedule, only valid tests conducted after the Operating License issuance date shall be included in the computation of the "last 100 valid tests". Entry into this test schedule shall be mace at the 31 day test frequency. Increased test frequency for one diesel generator i shall not affect the test frequency for the remaining diesel generator, even under the STAGGERED TEST BAbl5 criteria, i

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• • This test frequency shall be maintained until seven consecutive f ailure-free demands have been performed and the number of failures in the last 20 valid demanas has been reduced to one. .

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• • • For purposes of determining the required test frequency, the previous test f ailure count may be reduced to zero if a complete diesel overnaul to like-new conditions is completed, provided that the overnaul, including appropriate post-maintenance operation and testing, is specifically approvec by the manufacturer and if acceptable reliability nas been demonstratea.

The reliability criterion shall-be successful completion of 14 consecutive tests in a single series; 10 of these tests shall be in accordance with i i

Surveillance Requirement 4.8.1.1.2a.4,5 ana 4 of these tests shall include the fast loading requirement described in the double-asterisked (**) note l to surveillance requirement 4.8.1.1.2a.5. If this criterion is not satis-fied during the first series of tests, any alternate criterion used to trans value.the failure count to zero may only be implemented with prior approval by the NRC.

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l. ADD w 't DI tCtr TKQ WATE9 FORD - UNIT 3 3/4 S-7 AMENOMENT NO. :: i

INSI'ItT The valid failure to start the " A" Train Diesel Generator on 08/20/91 due to the loss of the power dropping resistor in the gavernor circuitry is not to be counted toward the adjustinent ol' test frequency for the " A" Train EDG. If the first 11 valid tests on the "A" Train EDG following the 08/20/91 fuilure do not result in a failure caused by the new power dropping resistor, the valid 08/20/91 failure is trans-valued to zero and this provision no longer applies.

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