ML20132C374

Proposed Tech Specs Section 15.3.3 Re Eccs,Auxiliary Cooling Sys,Air Recirculation Fan Coolers & Containment Spray

ML20132C374
Person / Time
Site:	Point Beach
Issue date:	12/12/1996
From:	WISCONSIN ELECTRIC POWER CO.
To:
Shared Package
ML20132C366	List: ML20132C363 ML20132C374
References
NUDOCS 9612180307
Download: ML20132C374 (3)

Text

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1 satisfied within an additional 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />, the reactor shall be placed in the cold shutdown condition. I

a. One of the assigned component cooling pumps may be out of service provided a pump is restored to operable status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

b. Two heat exchangers which may be aligned to the operating unit may be out of service provided repairs can be completed within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />. l i

I Two Unit Oneration

1. Both reactors shall not be made critical unless the following conditions are met,

a. T4 wee-Eom_ component cooling pumps are operable.

b. - Three component cooling heat exchangers are operable. i c.

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All valves, interlocks and piping required for the functioning of 1 the system during accident conditions and associated with the above components are operable.

2. During power operation, the requirements of 15.3.3.C-1 may be modified to allow one of the following conditions at any one time. If the system is not restored to meet the conditions of 15.3.3.C 1 within the I i

time period specified, one reactor shall be placed in the hot shutdown condition. If the requirements of )

15.3.3.C-1 are not satisfied within an additional 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />, the reactor shall be placed in the cold shutdown condition.  !

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a. One of the dwee-fontassigned component cooling pumps may be out of -

service provided a pump is restored to operable status within-24_.22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br />,

b. Two heat exchangers may be out of service provided repa'rs can be completed within 48 -

hours.

D. Service Water Svstem

1. Neither reactor shall be made or maintained critical unless the following conditions are met: i I

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9612190307 961212 PDR ADOCK 05000266

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' Unit I '- Amendment No.405 15.3.3-5 Febr=y 22, 937 l l Unit 2 - Amendment No.408 L

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a. Few-hservice water pumps are operable, : ese frem ::darain.

b. All necessary valves, interlocks and piping required for the functioning of the Service Water System during accident conditions are also operable.

2, During power operation, the requirements of 15.3.3.D-1 may be modified to allow enedthe following ecmpen:n" *^ 5: inepemb!: conditions:: any en: t'ne if the system is not restored to meet the conditions of 15.3.3.D-1 within the time period specified, be6h-the affected reactor (s) will be placed in the hot shutdown condition within six hours and in cold shut'down within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.

a. One c'*he fen:::quir:d =r;!= tv:::: prmp: may be cu: cf =re!= prev!d:d a pr np i:

=:ter:d ic cp:=5!: ::::: - "H 24 heum.

One of the six required service water pumps may be out of scr.yice provided a pump is restored to operable status within 7 days. A second srtyice water numn may be out of service provicted a pumo is restored to Qperable status within 72 houri. A third service water pump may be out of service provided two pumps are res.tated to operable status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

b. One of'he :z.c !cep h=dem The service water ring header continuous flowpath may be out of service for a period of 21 heu=7 dass ifless than four service water numps are operable.

service water system flow shall be evaluated within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of entry into thjs1CO.

c. A-An automatic isclation valve er e her p =".: ccmpenent required during accident  !

tenditions may be out of service for un to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> _provided =p := = : be< cmp!:::d "hin  ;

48-hewsat least four service water numps are operable. This LCO can be exited orovided the line is isolated with a seismically qualified isolation valve or the valve is restored to operable i status.

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d. The containment fan.cDoler outlet motor t perated valves may be open for up to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> I i

Drovided at least five service water cumps are operable. This LCO can be exited provided the valves are returned to the closed position or the flowpath is isolated, Basis The normal procedure for starting the reactor is, first, to heat the reactor coolant to near operating temperature, by running the reactor coolant pumps. The reactor is then made critical by withdrawing control rods and/or diluting boron in the coolant.m With this mode of start-up, the energy stored in the reactor coolant during the approach to i criticality is substantially equal to that during power operation and therefore to be conservative most engineered  !

safety system components and auxiliary cooling systems, shall be fully operable. During low temperature physics tests there is a negligible amount of stored energy in the reactor coolant, therefore an accident comparable in severity to the Design Basis Accident is not possible, and the engineered safety systems are not required. )

Unit 1 - Amendment No.461 15.3.3-6 Octoiw42r@M Unit 2 - Amendment No.467

and (4)long term subcriticality is maintained following a steamline break assuming ARI-l and fuel failure is precluded.

The containment cooling function is provided by two independent systems: (a) fan coolers and (b) containment spray which, with sodium hydroxide addition, provides the iodine removal function. During normal power operation, only three of the four fan coolers are required to remove heat lost from equipment and piping within the containment.* In the event of a Design Basis Accident, any one of the following combinations will provide sufficient cooling to reduce containment pressure: (1) four fan coolers,(2) two containment spray pumps, (3) two fan coolers plus one containment spray pump.W Sodium hydroxide addition via one spray pump reduces airborne iodine activity sufficiently to limit off-site doses to acceptable values. One e"hc f= or two fan coolers is-ag; permitted to be inoperable for up to 48-Qhours during power operation.

Sprcification 15.3.3.B.2 allows.one of the following limitations (a.. b.. or c.) to be in effect at any one time. Thitis intended to preclude simultaneous inoperability of the containment accident fan cooling system and the conta.inment sprav system. It is also intended to nreclude inoperability of both trains of ehher of thesejystems. It is not intended to preclude inoperability of comnonents in the same train for either of these systems. For exampf . simuhaneous inoperability of tite _ Train A containment sprav nump and the Train A containment spray system valves is allowed.

Specification 15.3.3.B.2.c requires valves that provide the duplicate function be operable prior to initiating repairs on an inoperable valve. For the specific case of the containment spray pump discharge (SI-860) valves, SI-860A  !

and SI-860D provide duplicate functions. Valves SI-860B and SI-860C are not required for system operability.

Ilence, prior to removing valve SI-860A from service, valve SI-860D must be operable and vice versa.

The component cooling system is different from the other systems discussed above in that the components are so located in the Auxiliary Building as to be accessible for repair after a loss-of-coolant accident. The component cooling water pump together with one component cooling heat exchanger can accommodate the heat l

Unit 1 - Amendment NoAS4 15.3.3-9 Themtw&4444 Unit 2 - Amendment NoA4 i