ML18057A888

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Rev 1 to Application for Amend to License DPR-20,changing TS Re Shutdown Cooling Sys Per Generic Ltr 88-17,by Adding Operability Requirements for Shutdown Cooling Sys & Steam Generators
ML18057A888
Person / Time
Site: Palisades Entergy icon.png
Issue date: 05/01/1991
From: Slade G
CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML18057A889 List:
References
GL-88-17, TAC-73443, NUDOCS 9105130054
Download: ML18057A888 (6)
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Text

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consumers Power GB Slade General Manager POWERiNii NllCHlliAN'S PROliRESS

. Palisades Nuclear Plant: 27780 Blue Star Memorial Highway, Covert, Ml 49043 May 1, 1991 Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 DOCKET 50-255 - LICENSE DPR PALISADES PLANT -

TECHNICAL SPECIFICATION CHANGE REQUEST - SHUTDOWN COOLING SYSTEM (TAC NO.

73443) - REVISION 1 Enclosed is Revision 1 of Consumers Power Company's June 28, 1989 request, in response to the recommendations of GL 88-17, to change the Palisades technical specifications by adding operability requirements for the Shutdown Cooling (SOC) system.

Rece~t review of the stress analysis for the SOC p1p1ng has revealed that 300°F is the highest temperature assumed.* Accordingly, this revised request restricts operation. of the SOC system to when primary coolant system (PCS)

  • temperature is le~s than or equal to 300°F. Also, changes are proposed to existing technical specifications steam generator operability requirements to ensure the PCS can be cooled by the steam generators when the P.CS temperature is greater than 300°F. -

As noted in our June 28, -1989 letter, this proposed change does not include a permanent resolutio~ of the high pressure safety injection (HPSI) pump issue as proposed in Generic Letter 88-17. Current technical specifications require both HPSI pumps to be inoperable when the PCS temperature is less than 260°F.

Resolution of HPSI pump operability will be delayed until our submittal of the Palisades Restructured Standard Technical Specifications. Attachment 1 contains proposed technical specifications pages. Attachment 2 is marked up-existing technical specifications pages. To allow implementation, we request this change be made effective 60 days after it is issued.

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Gerald B Slade General Manager CC Administrator, Region III, USNRC NRC Resident Inspector, Palisades Attachment l .

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I!\ f}OOI A CMS ENERGY COMPANY

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  • 1 CONSUMERS POWER COMPANY Docket 50-255 Request for Change to the Technical Specifications License DPR-20 For the reasons hereinafter set forth, it is requested that the Technical Specifications contained in the Facility Operating License DPR-20, Docket 50-255, issued to Consumers Power Company on February 21, 1991, for the Palisades Plant be changed as described in Section I below:

I. Changes A. Change Section 3.1.1.d to read "Both steam generators shall be capable of performing their heat transfer function whenever the average temperature of the primary coolant is above 300°F".

B. Change the first line of Section 3.1.1.i to read "The PCS shall not be heated or maintained above 300°F ... ".

C. Add new Section 3.1.9 "Shutdown Cooling" to the Primary Coolant System (PCS)* section and to the Table of Contents.

D. Change the first line of Section 3.5.1 to read "The primary coolant shall not be heated above 300°F unless the ... ".

E. Change the first line.of Section 3.5.2 to read "With the Primary Coolant System at a temperature greater than 300°F, II F. Change the first line of Section 3.5.3 to read "With the Primary Coolant System at a temperature greater than 300°F II G. Change the first paragraph of Section 3.7.1 to read "The primary coolant system shall not be heated or maintained at temperatures above 300°F if the following electrical systems are not operable:"

H. Add new Section 3.7.3.

I. On Table 3.17.4, Items Nos. 9, 12, 13, 14, 15, and 18, change the Permissible Bypass Conditions column to read "Not requi~ed below 300°F".

J. Change Table 3.24-2, Item 5.a, in the Applicability column to read, "Above 300°F."

K. In Section 3.25.1, change the end of the sentence of the Limiting Condition for Operation to read " ... in accordance with Section 4.21." Also, change the applicability statement in to read: "Reactor coolant temperature >300°F".

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  • 2 L. Add new surveillance item 14 to Table 4.2.2 (See proposed pages}.

M. Change Note (1} at the end of Table 4.21.1 to read: "(1}

Quarterly checks are not required when the PCS temperature is

~300°F."

N. Change Table 4.24-2, Item Sa, in the Modes in Which Surveillance Required column to read "Above 300°F."

II. Discussion A. Section 3.1.1.d is changed to ensure the steam generators are operable at PCS temperatures above 300°F because recent review of the stress analysis of the SOC piping has revealed that 300°F is the highest temperature assumed; and therefore, operability of the SOC is restricted to ~300°F.

8. Section 3.1.1.i is changed to require the pressurizer heaters to be operable at PCS temperatures above 300°F when the steam generators are the only normal method of cooling the PCS.

C. New Section 3.1.9 adds shutdown cooling equipment operability requirements for the PCS and the SOC system when fuel is in the reactor and the PCS temperature is ~300~F. The proposed changes integrate various requirements from~: a} Combustion Engineering Standard Technical Specifications (NUREG 0212, Revision 3, draft}, b} Combustion Engineering Restructured Standard Technical Specifications (May 1989}, c} Generic Letter 88-17 (Loss of Decay Heat Removal} and d} specifics of the Palisades Shutdown Cooling system design configuration.

A notable difference between the Standard Technical Specifications and the proposed specification is that Palisades does not have two independent shutdown cooling trains. The SOC system has a common suction line from the PCS to two shutdown cooling pumps which also function as the Low Pressure Safety Injection (LPSI} pumps. The discharge of the pumps enters a common header which in turn splits to each of two heat exchangers and then returns to a common header before again dividing into the four LPSI piping headers to the PCS cold legs. (Reference Palisades FSAR Section 6.1 for further information.}

--- -D. -Section-3.5.1 is changed because--new-Section 3;1.9 restricts operation of the SOC system to when the PCS temperature is less than or equal to 300° F and makes it necessary for the steam generators to be operable when the PCS temperature is above 300°F.

E. Section 3.5.2 is changed to remain consistent with Section 3.5.1 to which it refers.

F. Section 3.5.3 is changed to remain consistent with Sections 3.5.1 and 3.5.2 to which it refers.

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H. New Section 3.7.3 is added to require electrical power to supply the required shutdown cooling system whenever the PCS temperature is s300°F.

I. Item 9 on Table 3.17.4 is changed to provide NUREG 0737 required valve position indication for the PZR code safety relief valves which, in addition to the PORVs, protect the PCS from over pressurization when the steam generators provide cooling. At less than or equal to 300°F, the PORVs provide this protection. Item 12 is changed to provide indication that the PCS coolant remains in single phase (liquid) to insure cooling by steam generators. Items 13, 14, and 15 are changed to ensure indication and actuation of coolant (AFW) flow to the secondary side of the steam generators when the PCS temperature is greater than 300°F.

Item 18 is changed to provide reactor vessel water level indication when the steam generators are cooling the PCS and the SOC trains are not available.

J. Item 5.a on Table 3.24-2 is changed to assure the main steam safety and dump valve discharge .line is monitored for gross gamma activity whenever the steam generators are cooling the PCS ..

K. The Applicability Statement in Section 3.25.1 is changed to make the Auxiliary Shutdown Panel operable whenever the SOC system is not available. A typographical error in the Limiting Condition for Operation is corrected. Operability should be demonstrated by surveillance in accordance with Section 4.21.

L. A new surveillance is added to Table 4.2.2 to verify the*

secondary water level in each steam generator when they are required to meet shutdown cooling requirements.

M. Note (1) at the end of Table 4.21.1 is changed to make the quarterly check frequency consistent with the Applicability statement in Section 3.25.1.

N. Item 5.a on Table 4.24-2 is changed to assure the gross gamma activity monHor is accurate.and operable.

III. Analysis of No Significant Hazards Consideration The changes requested in this proposal increase the range of PCS temperatures over which the steam generators and associated equipment must be operable and add definition and operability requirements (where none previously existed) for the Shutdown Cooling (SOC) trains.

Consumers Power Company finds that activities associated with this proposed technical specifications change involve no significant hazards;

and, accordingly, a no significant hazards determination per 4

10CFR50.92(c) is justified. The following evaluation supports the finding that the proposed changes would not:

1. Involve a significant increase in the probability or consequences of an accident previously evaluated.

This change does not involve a significant increase in the probability or consequences of an accident previously evaluated because it only increases the range over which the steam generators and their coolant supply must be operable and identifies and adds operating requirements for the shutdown cooling trains. This change does not affect the material condition of the plant and does reflect current analyses of postulated accidents and operating practices.

Therefore, there is no significant increase in the probability or consequences of an accident previously evaluated.

2. Create the possibility of a new or different kind of accident from any accident previously evaluated.

This change does not create the possibility of a new or different kind of accident from any accident previously evaluated because it does not affect the material condition of the plant and reflects current analysis and operating practices.

3. Involve a significant reduction in the margin of safety.

This change does not involve a significant increase in the margin of safety because it does not affect the material condition of the plant, reflects current analysis and operating practices, increases the PCS temperature range over which steam generator cooling is required to be operable and adds operability requirements for the shutdown cooling trains to the technical specifications whereas none existed before.

IV. Conclusion

  • 5 The Palisades Plant Review Committee has reviewed this Technical Specification Change Request and has determined that this change does not involve an unreviewed safety question. Further, the change involves no significant hazards consideration. This change has been reviewed by the Nuclear Safety Services Department. A copy of this Technical Specification Change Request has been sent to the State of Michigan official designated to receive such Amendments to the Operating License.

CONSUMERS POWER COMPANY To the best of my knowledge, information and belief, the contents of this Technical Specification Change Request are truthful and complete.

By~~C?

David P Hoffman, Vice P e Nuclear Operations Sworn and subscribed to before me this /!>-t day of __(Y1_~"#--y_ __ 1991.

f.

~iz~ , Notary Public

~~nty, Michigan tJY commission expires ELAINE E. BUEHRER .

NOTAR'f PIJBL!C-JACKSON COUNTY MICH.

MY COMMISSION EXPIRES 10-11-93 *

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