ML20236W786

Proposed Tech Specs Change 206,revising to Incorporate Changes to TS to More Clearly Define Requirements for Service Water Sys Operability

ML20236W786
Person / Time
Site:	Point Beach
Issue date:	07/30/1998
From:	WISCONSIN ELECTRIC POWER CO.
To:
Shared Package
ML20236W777	List: L-98-613, Application for Amends to Licenses DPR-24 & DPR-27, Incorporating Changes to TSs to More Clearly Define Requirements for Svc Water Sys Operability ML20236W786 NPL-98-0613, Application for Amends to Licenses DPR-24 & DPR-27, Incorporating Changes to TSs to More Clearly Define Requirements for Svc Water Sys Operability
References
NUDOCS 9808060210
Download: ML20236W786 (4)

Text

NPL 98-0613 Attachment 4 Page1 TECHNICAL SPECIFICATION PAGE MARKUPS TECHNICAL SPECIFICATIONS CHANGE REOUEST 206 SERVICE WATER SYSTEM OPERABILITY POINT BEACH NUCLEAR PLANT. UNITS 1 AND 2 4

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9900060210 900730 PDR P

ADOCK 05000266 pg Unit 1 - Amendment 15.3.3-6 Unit 2 - Amendment i

NPL 98-0613 Attachment 4 Page 2

2. During power operation, the requirements of 15.3.3.D-1 may be modified to allow the following conditions. If the system is not restored to meet the conditions of 15.3.3.D-1 within the time pcriod specified, the affected reactor (s) will be placed in the hot shutdown condition within six hours and in cold shutdown within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.

a. One of the six required service water pumps may be out of service provided a pump is restored to operable status within 7 days. A second service water pump may be out of service provided a pump is restored to operable status  !

within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. A third service water pump may be out of service provided two pumps are restored to operable status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

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b. The service water header continuous flowpath may be out of service for a period of un to 7 days subiect to the followine conditions and the limitations j of 15.3.3.D-2.a: l

i. At least five service water numns are operable.

.OI ii. If four service water numns are operable. then the flow nath is interrupted only between the service water numn bays.

l Or l iii. Service water numn and continuous Downath alienment may be different from that defined in b.i or b.ii above provided an evaluation is nerformed demonstrating reauired systems are onerable prior to establishing the configuration.

i If1 :: than four service vater pumps are operable, serzie vater system Ocv cha!! bc evaluated vithin 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of!cs: than four-servesveter pumps being operable.- Ifit-is-determmed4 hat any equipment sunnorted by service water will not receive sufficient flow due to the service water numn and flowpath alienment. then the applicable LCOs for the affected equipment shall be entered and reauired action taken. Re LCO can be exited if system realignment is comp!:ted to achieve the-rerpired Scw rates fer-the-affected equipment-

, c. Any or all automatic isolation valves required during accident conditions may l

be out of service for up to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> provided at least four service water pumps are operable. This LCO may be exited provided the lines are isolated with a Unit 1 - Amendment 15.3.3-6 Unit 2 - Amendment

NPL 98-0613 Attachment 4 Page 3 seismically qualified isolation valve or the valves are restored to operable status.

d. The containment fan cooler outlet motor operated 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 /> provided the valves are enerable and at least five service water pumps are operable. This LCO r.::y be exited provided the valve: are ret =:d to the !cced pecitier. cr the Pcycpa:h ice! : d.

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Unit 1 - Amendment 15.3.3-6 Unit 2 - Amendmer.t i __ _ -----.---_ --__----_ _ _ _-_ _ - - - -- t

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l A total of six service water pumps are installed, only three of which erate are required to op during the injection and recirculation phases of a postulated loss-of-coolant accident,. in one unit together with a hot shutdown or normal operation condition in the other unit. For either l reactor to be critical, six service water pumps must be operable.

The allowed outage time for a single service water pump is 7 days. The allowed outage time for two or three service water pumps is 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. If more than one service water pump is inoperable,

, the 7 day allowed outage time starts when the first pump is declared inoperable and the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> allowed outage time for the second and third pumps is cumulative starting from the time the second pump is declared inoperable. Therefore, the total time that two or three pumps are inoperable during the period that LCO 15.3.3.D.2.a is in effect must not exceed 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. All pumps must be restored to operable status within 7 days of the first pump being declared inoperable. Specifications 15.3.3.D.2.c requires four and 15.3.3.D.2.d required five service water pumps to be operable to provide sufficient flow for accident mitigation when these specifications are in effect.

The service water ring header continuous flowpath LCO requirement (TS 15.3.3.D.2.b) applies anytime continuity of the flowpath in the service water ring header is interrupted. This includes isolation of any part of the ring header. This LCO recognizes that one aspect of redundancy in the service water system is the ability to isolate a break in the system and still maintain ability to

- ' provide required flow to supported equipment. This capability of f is im the fact that a piping failure must occur to cause a subsequent problem with system operability.

Piping failures are not considered as the .; ingle failure for system functionality during an accident. fraer io SsU.'skal b" i.e spoetfo'eA *l.) h * ?'

TS 15.3.3.D.2.b requires that service water system flow is evaluated dhh 27 hc= If k= d2 faa xrix == p=p: = cpreb. This is necessary to ensure that all required equipment will receive sufficient flow in this condition. Ifit is determined that any equipment will not receive sufficient flow, the applicable LCOs for the affected equipment shall be entered. These LCOs can be exited if system realignment is completed to eirdeve the required flov; rates for the affected equipment.

v Unit 1 - Amendment No.174 15.3.3 10 July 9,1997 l Unit 2 - Amendment No.178

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