NPL-97-0249, Suppl to TS Change Request 192 to Licenses DPR-24 & DPR-27, Modifying TS Section 15.3.3, Eccs,Acs,Air Recirculation Fan Coolers & Containment Spray to Incorporate Allowed Outage Times Similar to Those Contained in NUREG-1431,Rev 1

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Suppl to TS Change Request 192 to Licenses DPR-24 & DPR-27, Modifying TS Section 15.3.3, Eccs,Acs,Air Recirculation Fan Coolers & Containment Spray to Incorporate Allowed Outage Times Similar to Those Contained in NUREG-1431,Rev 1
ML20141C577
Person / Time
Site: Point Beach  NextEra Energy icon.png
Issue date: 05/09/1997
From: Dante Johnson
WISCONSIN ELECTRIC POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20141C581 List:
References
RTR-NUREG-1431 NPL-97-0249, NPL-97-249, NUDOCS 9705190095
Download: ML20141C577 (7)
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Wisconsin 1

( Electnc POWER COMPANY i 231 W Michigan. PO Box 2046. Mdwoukee, WI S3201-2046 (414)221 2345 l

NPL-97-0249 10 CFR 50.4 10 CFR 50.90 May 9,1997 I US NUCLEAR REGULATORY COMMIL ION Document Control Desk Mail Station Pl-137 Washington,DC 20555 l

Ladies / Gentlemen:

DOCKETS 50-266 AND 50-301 SUPPLEMENT TO TECHNICAL SPECIFICATIONS CHANGE REOUEST 192 l POINT BEACH NUCLEAR PI AN.T. UNITS 1 AND 2 In a letter dated S@ ember 30,1996, Wisconsin Electric submitted rechnical Specifications l Change Request W. This Technical Specifications change request proposes to modify Technical Specifications section 15.3.3, " Emergency Core Cooling System, Auxiliary Cooling Systems, Air Recirculanon Fan Coolers, and Containment Spray" to incorporate allowed outage times similar to those contained in NUREG-1431, Revision 1, " Westinghouse Owner's Group Improved Standard Technical Specifications," and modify the operability requirements for the service water system. The proposed changes to Technical Specifications section 15.3.7,

" Auxiliary Electrical Systems," also reflect the modified service water operability requirements.

The propos j

nange to Technical Specifications section 15.5.2, " Containment," modifies the heat remm al capacity of the reactor containment air cooler units. Previous supplements to this / i l Technical Specifications change request were provided in a letters dated November 26,1996, December 12,1996, February 13,1997, March 5,1997, April 2,1997 and April 16,1997.

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This letter also provides supplemental information for Technical Specifications change request 192. This supplement proposes to modify the proposed Technical Specifications changes as proposed in the attachment. A supplemental safety evaluation and the revised edited Technical Specifications pages for these proposed changes are also provided as an attachment to this letter.

We have determined that the additional information de s not involve a significant hazards consideration, authorize a significant change in the types or total amounts of any effluent release, or result in any significant inuease in individual or cumulative occupational exposure.

9705190095 970509 PDR ADOCK 05000266 hhll

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AwfuMhn ofHiwusinEnrip Corpdiwr

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Document Control Desk May 9,1997 i Page 2

< 1 4 Therefore, we conclude that the proposed amendments meet the requirements of 10 CFR j 51.22(c)(9) and that an environmental impact statement or negative declaration and environmental l impact appraisal need not be prepared. The conchisions of the orib inal "No Significant Hazards" determinations for operation under the proposed Technical Specifications remain applicable.

Please contact us if you have any questions.

Sincerely, Ar Douglas F. Johnson Manager-Regulatory Services and Licensing )

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j Attachment j cc: NRC Resident Inspector NRC Regional Administrator PSCW i Subscribed and sworn before me on this 9^ day of Ms .1997.

d i n tA rs 11 1

/ blic, State of Wisconsin My commission expires' to/2c/)go I l

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TECIINICAL SPECIFICATION CHANGE REOUEST 192

, SUPPLEMfATAL SAFETY EVALUATION Introduction l In a letter dated September 30,1996, Wisconsin Electric requested Technical Specifications change request 192. This Technical Specifications change request proposes to modify Technical Specifications section 15.3.3, " Emergency Core Cooling System, l

Auxiliary Cooling Systems, Air Recirculation Fan Coolers, and Containment Spray" to q incorporate allowed outage times similar to those contained in NUREG-1431, Revision 1,  !

" Westinghouse Owner's Group Improved Standard Technical Specificarions," and modify  !

the operability requirements for the service water system. The proposed changes to Technical Specifications section 15.3.7, " Auxiliary Electrical Systems," also reflect the 3 modified service water operability requirements. The proposed change to Technical l Specifications section 15.5.2, " Containment," modifies the heat removal capacity of the l reactor containment air cooler units. Supplements to this Technical Specifications change l request were provided in letters dated November 26,1996, December 12,1996, February 13,1997, March 5,1997, April 2,1997, and April 16,1997.

This supplement proposes to modify the proposed Technical Specifications changes as ,

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1. Move TS 15.3.3.B.2.c to the previous page to provide'more orderly arrangement of these limiting conditions for operation. Also, add the following exception for this limiting condition for operation, "(Exception: If a spray pump is removed from service per b. above, valves associated with that train may be removed from service for the period specified for the pump)." This statement was improperly removed under amendments 159 (DPR-24) and 163 (DPR-27), as requestej by Wisconsin Electric Technical Specifications change request 169. Apparently, when change l request 169 was prepared, it was believed that this exception was only needed due to ,

the difference in allowed outage time between a spray pump and the spray valve. i Actually, this exception is needed because 15.3.3.B allows only one limiting i

condition for operation for containment cooling at any one time, which previously had the logical exception for spray pumps and valves in the same flow train.

Therefore, this exception is being reinstated. This allows the deletion of the

proposed basis information which was previously intended to accomplish this correction.
2. Delete " Single Unit Operation" and "Two Unit Operation" from TS 15.3.3.C. The revised changes to TS 15.3.3.C propose that each specification will have appropriate operability requirements without the need for separate single unit and two unit operation specifications.

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3. - Change TS 15.3.3.C.1, the component cooling water system operability  ;

requirements, to generally apply to either reacter.  ;

.4.- Change TS 15.3.3.C.l.b to require two component coaling heat exchangers to be

! operable for single unit operatica and three component cooling heat exchangers for l two unit operation. The comporent cooling water systesa has four heat exchangers.

' For the case of single unit operatien, adequate redundancy is maintained by two heat exchangers. For two unit operation, requiring a third heat exchanger to be operable assures that at least one heat exchanger will be operable for each unit in the event that one heat exchanger becomes inoperable.

5. Change the allowed outage time for one component cooling water pump in TS 15.3.3.C.2.a from 24 to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. This allowed outage time is consistent with

! NUREG-1431, Revision 1 and the allowed outage times for other equipment in this l- section of the Point Beach Technical Specifications. Additionally, the current Technical Specifications allow one pump to be out of service indefinitely, without l limitation. This proposed limiting condition for operation and allowed outage time ,

l establish appropriate time limits for reactor operation any time a required pump l l becomes inoperable.

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6. Change TS 15.3.3.C.2.b to invoke a limiting condition for operation when one heat  !

exchanger is out of service and change the allowed outage time from 48 to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

l This proposed limiting condition for operation increases the probability that more i l than one he:at exchanger will be available at all times and this allowed outage time is l l consistent with NUREG-1431, Revision 1. I

7. Delete the entire two unit operation section from TS 15.3.3.C. As stated previously, l the revised changes to TS 15.3.3.C propose that each specification will have  ;

l appropriate operability requirements without the need for separate single unit and j i two umt operation specifications.

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8. Change TS 15.3.3.D.1 to delete the ".. or maintained.' ." clause. This clause was in i

the original Point Beach Technical Specifications. This clause should have been

deleted when the limiting conditions for operation section (TS 15.3.3.D.2) was added in 1972. The original Technical Specifications only contained the operability _  ;

requirements section (TS 15.3.3.D.1). The original Technical Specifications did not include the limiting conditions for operation contained in TS 15.3.3.D.2. The use of the "...or maintained.. " clause in 15.3.3.D.1 in essence made the operability requirements in TS 15.3.3.D.1 into limiting condition for operation in the original Technical Specifications.

i 9. Correct proposed specification TS 15.3.3.D.2.b to state that the proviso for

} evalunimg service water flow within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> is applicable any time this LCO is in i effect and le.ss than four service water pumps are operable. The previously proposed l wording for this LCO cculd have been construed as requiring entry into TS 15.3.0 if 2

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less than four service water pumps became operable if 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> had clapsed since the entry into the LCO. This was not the intent of the proposed LCO. The proviso to allow 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> for evaluation of service water system flow was inteaded to be ,

used any time that less than four service water pumps were operable while in this l LCO. ,

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10'. Change proposed Technical Specification 15.3.3.D.2.c to allow any or all automatic isolation valves to 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 />. The existing specification  ;

allows any valve or other passive component to be out or service for 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />. [

Previously proposed changes to this specification associated with this Technical  :

Specifications change request stated: j I

l Change TS 15.3.3.D.2.c to include more specific identification of the " valve" as an i l automatic isolation valve required during accident conditions and delete the l reference to "other passive component." This provides more direct relationship of l j this LCO to the associated operability requirement contained in TS 15.3.3.D.l.b l which also specifies that it pertains to equipment required during accident - 1 L conditions. The reference "other passiv component"is not necessary because l piping and heat exchanger failures in the system would be covered under the requirements in TS 15.3.3.D.2.b for the ring header continuous flowpatt, the applicable LCO for the affected equipment, or both. The additional provision that I requires at least four service water pumps to be operable incorporates the  :

appropriate restriction to allow coincidental entry into any of these service water system LCOs, as stated in the description of change to TS 15.3.3.D.2.

Also, it is proposed that TS 15.3.3.D.2.c be changed to increase the allowed i outage time from 48 to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> which is consistent with the relaxation of s'ngle failure and allowed outage time associated with a loss of redundacey for the service water system. The two ways this LCO can be exited have been added to this LCO for clarity. The two ways this LCO can be exited include isolating the line with a seismically qualified isolation valve or restoring the valve to operable status.

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I This proposed change to allow any or all automatic valves to be out of service for the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> allowed outage time is more appropriate than allowing a single valve to be inoperable because the automatic service water isolation logic would only actuate ifless than four service water pumps operating. The proposed limiting condition for J operation requires four service water pumps to be operable. The four service water j.

pump operability requirement precludes reliame on service water isolation for the h duration of the LCO. Additionally, this proposed LCO appropriately accounts for i total inoperability of the automatic service water isoladon function.

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l 1. Revise the basis of TS 15.3.3 to remove the proposed basis information referred to in change 1 described above. Also, correct the basis for proposed LCO TS 15.3.3.D.2.b as described in change 9 above.

Evaluation of these revised proposed Technical Specifications changes is provided in the

. following safety evaluation. The "No Significant Hazards Consideration" provided in the -

original Technical Specifications change request was reviewed. The results of this review are provided in this supplemental information. The revised edited Technical Specifications l are also provided as vi attachment.

l Safety Evaluation These supplemental changes for the CCW system and Service Water sutomatic isolation function are evaluated as follows. The other proposed Containment Spray (CS) and Service Water (SW) system limiting condition for operation changes are clarifications of ,

L the previously proposed requirements.

Component Cooling Water In summary, changes 2 through 7 described above cause the following effects:

The proposed chc.nges will allow one CCW pump to be inoperable in each unit during two -

unit operation, as opposed to the previousy proposed specification which only allows a single pump to be inoperable during two unit operation. This change provides better guidance for the condition ofinoperability of one CCW pump in each unit. The previously proposed specification was inconsistent in that it would have required entry into 15.3.0 if l one CCW pump was inoperable in each ur.it. This is inconsistent with the single unit L Technical Specification which allows one of the two pumps required for single unit operation to be inoperable. Additionally, the existing specification for two unit operation allows one pump to be inoperable indefinitely without limitation and any second pump can be inoperable for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Therefore, the proposed change to allow one CCW pump inoperable in each unit resolves an inconsistency in the existing Technical Specifications. ;

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The proposed allowed outage time for the CCW pumps is 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. As stated in the i December 12,1996 supplement to this Technical Specifications change request, the  !

proposed change from a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> allowed outage time to a 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> allowed outage time is necessary to provide adequate time to repair a CCW pump. This allowed outage time is consistent with the allowed outage time for CCW contained in NUREG 1431, Revision 1, J

" Westinghouse Owner's Group Improved Standard Technical Specifications."

The proposed limiting condition for operation for CCW heat exchangers will allow only l .one of the required heat exchangers to be inoperable for 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> compared to the F existing Technical Specifications requirements which allow two heat exchangers to be f

inoperable for 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />. This change increases the probability that at least one heat  !

i' exchanger will be available for each operating unit.  !

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As stated in the change description above, the proposed change to allow any or all automatic valves to be out of service for the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> allowed outage time is more -

appropriate than allowing a single valve to be inoperable because the automatic service water isolation logic would only actuate ifless than four service water pumps are operating. The proposed limiting condition for operation requires four service water l pumps to be operable. The four service water pump operability requirement precludes l L reliance on service water isolation for the duration of the LCO. Additionally, this proposed LCO appropriately accounts for total inoperability_of the automatic service water isolation function.

Review of"No Significant Hazards Consideration" The original "No Significant Hazards Consideration" provided with Technical Specifications change request 192 has been reviewed. The propot.ed modifications to this j i license amendment request do not alter any conclusions or the basis for these conclusions j provided in the original"No Significant Hazards Consideration." j The only part of the original evaluation that is affected by these proposed modifications is .

the specific reference to the plant systems that are the subject of this license amendment l

l request. The first section of the original"No Significant Hazards Consideration" states:

1 This license amendment request proposes to change the limiting conditions for l operation, action statements, allowable outage times, and design specifications for j l the Point Beach Nuclear Plant Technical Specifications associated with the

! containment accident fan coolers, service water equipment, and normal and l emergency power supplies.

l The proposed modification to this license amendment request proposes improvements to l the limiting condition for operation associated with the component cooling water system operability requirement for single and two unit operation. As stated previously, these changes provide added assurance that two pumps and one heat exchanger will be operable for accident mitigation in one unit and safe shutdown of the other. Therefore, the conclusions and the basis for the conclusions in the previous "No Eignificant Hazards l

Consideration" are not changed.

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