ML20045A496

Proposed Tech Specs Section 3.8.3.1 EPS - on-site Power Distribution,Clarifying Limiting Conditions for Two Motor Control Ctrs Supplying Power for Essential Svc Water Sys

ML20045A496
Person / Time
Site:	Wolf Creek
Issue date:	06/01/1993
From:	WOLF CREEK NUCLEAR OPERATING CORP.
To:
Shared Package
ML20045A492	List: ML20045A491 ML20045A496
References
NUDOCS 9306100389
Download: ML20045A496 (3)

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Attachment IV to NA 93-0032 Page 1 of 3 I

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Attachment IV Proposed Technical Specification Changes t

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J 9306100389 DR 930603 ADOCK 05000482  ;

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Attachment IV to NA 93-0032

,Page 2 of 3

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ELECTRICAL POWER SYSTEMS 3/4.8.3 ONSITE POWER DISTRIBUTION OPERATING LIMITING CONDITION FOR OPERATION 3.8.3.1 The following electrical busses shall be energized in the specified manner with tie breckers open between redundant busses within the unit:

a. Division #1 A.C. Emergency Busses consisting of:

1) 4160-Volt Emergency Bus #NB01, and 2) m

.480 .Vn.lt EmeraencL w-% emim nc.y w o c Russes #N

,ec,se 1, NG03 and h

b. Mt31 Urn r h.t,,. tmergericy Busses consisting of:

1) 4160-Volt Emergency Bus #NB02, and 71 Ru

_480-ValLEmergency._%get_MG , NG04 andkCOCD c.

Qq 126: VoTFr.C. Vital Bus 7/NN01 energized f rom its associated inverter

<eo vm _s.namaane - na ss, connected to D.C. Bus #NK01,

d. 120-Volt A.C. Vital Bus #NN02 energized from its associated inverter connected to D.C. Bus #NK02,

e. 120-Volt A.C. Vital Bus #NNO3 energized from its associated inverter connected to D.C. Bus #NK03,

f. 120-Volt A.C. Vital Bus #NN04 energized from its associated inverter connected to D.C. Bus #NK04,

g. 125-Volt D.C. Bus #NK01 energized from Battery #NK11 and Charger #NK21, 125-Volt D.C. Bus #NK02 energized from Battery #NK12 and Charger #NK22, h.

i. 125-Volt D.C. Bus #NK03 energized from Battery #NK13 and Charger #NK23, and

j. 125-Volt D.C. Bus #NK04 energized from Battery #NK14 and Charger #NK24.

APPLICABILITY: MODES 1, 2, 3,'and 4.

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a. W4 h-ene-of-the-requi4'ed-div4+ ions of A.C. emergency busses not i f ul ly energized, reenergite-the-division-witMn-8-houes-oe-be b at-Feast ll0T STANDBY-within-the-next C hours 6ad in COLD SMUTCOWN .6 Miin- 1 the felicm ng-30-hou m _ _

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b. With one A.C. vital bus either not energizea from its associated inverter, or with the inverter not connected to its associated D.C.

bus: (1) reenergize the A.C. vital bus within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be 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 following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />, and (2) reenergize the A.C. Vital bus from its associated inverter connected to its associated D.C.

bus within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be 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 following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. .

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.. WOLF CREEK - UNIT 1 3/4 8-13

n At t'a chmen t IV to NA 93-0032 Page 3 of 3 Insert A

a. With one of the required divisions of A. C. emergency busses not fully energized due to an item 1) or 2)~ bus, reenergize the division within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or be 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 following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. With one of the required divisions of A. C. emergency busses not fully energized due to the item 3) bus only, reenergize the division within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be 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 following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

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