ML20055H945
| ML20055H945 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 07/24/1990 |
| From: | NORTHEAST NUCLEAR ENERGY CO. |
| To: | |
| Shared Package | |
| ML20055H944 | List: |
| References | |
| NUDOCS 9007310186 | |
| Download: ML20055H945 (1) | |
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ELECTRICAL POWER SYSTEMS, L
-o IMITING CONDITION FOR OPERATION ACTION (continued).
c.-
With' one offsite circuit and one diesel generator inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by.
Lperforming Surveillance Requirement 4.8.1.1.1.a within one hour and a
at least once )er 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter;vand-if the diesel generator became inopera)le due to any cause other than preplanned
- preventative maintenance or testing, demonstrate the OPERABILITY of m
'the remaining OPERABLE diesel generator by performing Surveillance Requirement 4.8.1.1.2.a.5 within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> *; restore one of the' inoperable sources to OP' RABLE status within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> or be in' at =
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~.least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and'in COLD SHUTDOWN within toe following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
Restcre~ the other A.L. power: source
-(offsite circuit or dieel generator) to:0PERABLE status in-
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accordance with the provisiens of_ Section 3.8.1.1 Action Statement a or b, as a?propriate with-the time requirement of that Action Statement )ased on the time of initial loss of the remaining-inoperable 'A.C. - power source. A successful test of diosel generator OPERABILITY per Surveillance Requirement 4.8.1.1.2.a.5 performed under this Action Statement for an OPERABLE diesc'. Jenerator or'a restored-to OPERABLE diesel generator satisfies the dieselagenerator
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' test requirement of Action Statement a or b.
-d, With one diesel generator inoperable, in addition to ACTION b or c l'
above, verify'that:
1.
All required systems subsystems, trains, components, and
' devices that' depend on the remaining OPERABLE diesel generator as a source 'of emergency power areL also ' OPERABLE, and 2.
When ln MODE 1, 2, or 3, the steam-driven auxiliary feedwater
-pump s OPERABLE.
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If these conditions are not satisfied within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />,1be in at.least HOT STANDBY-within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the f
following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
l e.
With two of the required offsite A.C. circuits ino'perable, demon-strate'the OPERABILITY of t+ diesel generators by sequentially P'7 performing Surveillance Requirement 4.8.1.1.2.a.5' on both diesel I
generators within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, unless the diesel generators are already operating; restore one of'the' inoperable =offsite sources to OPERABLE 1
5 bo-status withrn L4 hours or be in at least HOT STANDBY within,the next
%CM 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. - Following re.itoration of one offsite source, follow Action j
Statement >a with the time requirement of that Action Statement. based o{k
.on the time of initial loss of the remaining inoperable offsite A.C.
o circuit. A successful test (s) of diesel generator OPERABILITY per Surveillance' Requirement 4.8.1.1.2.a.5 performed under this Action
'*o' Statement-for the OPERABLE diesel gc erators satisfies the diesel
'[
generator test requirement of Action Statement a.
h.Ediesel!generatorisrestoredtoOPERABILITY.
- This test is required to be completed regardless of when the inoperable 1
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