ML18141A305

Definition of Operable,Kewaunee Nuclear Power Plant.

ML18141A305
Person / Time
Site:	Kewaunee, Surry, 05000000
Issue date:	12/31/1983
From:	Farmer F EG&G IDAHO, INC.
To:	Neighbors D Office of Nuclear Reactor Regulation
Shared Package
ML18141A304	List: ML18141A305
References
CON-FIN-A-6429 EGG-EA-6400, TAC-43008, TAC-56410, TAC-56436, NUDOCS 8401090651
Download: ML18141A305 (6)

Text

e EGG-EA-6400 DEFINITION OF OPERABLE KEWAUNEE NUCLEAR POWER PLANT Published December 1983 F. G. Farmer EG&G Idaho, Inc.

Idaho Falls, Idaho 83415 Responsible NRC Individual and Division:

D. Neighbors/Division of Licensing Docket No.: 50-305 TAC No.: 43008 Prepared for the U.S. Nuclear Regulatory Commission Under DOE Contract No. DE-AC07-76i001570 FIN No. A6429

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• CONTENTS ABSTRACT ii FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . * . . * . . . . . . . . . . . . . . . . . . . . . . 1

2. REVIEW CRITERIA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

3. DISCUSSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

4. CONCLUSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

5. REFERENCES ........................... *.. . . . . . . . . . . . . . . . . . . . . . . . . . . 5 iii

• e DEFINITION OF OPERABLE, KEWAUNEE NUCLEAR POWER PLANT

1. INTRODUCTION On April 10, 1980, the Nuclear Regulatory Commission (NRC) issued a generic letter to all Power Reactor Licensees .which clarified the term OPERABLE and identified portions of the Model Technical Specifications (MTS) which are recommended to assure that safety systems remain OPERABLE within the limits of the single failure criterion. 1 In that letter the NRC requested that Licensees review their Technical Specifications (TS) and submit such proposed changes as were necessary to incorporate the requirements of the MTS.

On December 23, 1980, 3 May 24, 1983, 4 May 27, 1983, 5 and August 24, 1983, 6 Wisconsin Public Service Corporation (WPSC) responded to the generic letter. In the August 24, 1983, letter, WPSC proposed an amendment to the Kewaunee TS which would revise the Kewaunee Limiting Conditions for Operation (LCOs). EG&G Idaho, Inc., has reviewed the existing Kewaunee TS and the proposed amendment_ This report provides an evaluation of those TS and the proposed amendment for conformance to the criteria established by the NRC.

2. REVI~N CRITERIA The review criteria for this task are contained in NRC's April 10, 1980, letter and in Reference 2 and are summarized below.

Definition of OPERABLE A system, subsystem, train, component or device shall be OPERABLE or have OPERABILITY when it is capable of performing its specified function(s). Implicit in this definition shall be the assumption that all necessary attendant instrumentation, controls, normal and emergency electrical power sources, cooling or seal water, lubrication or other 1

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least HOT SHUTDOWN 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 at least COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> . . This specification is not applicable in MODES 5 or 6.

3. DISCUSSION WPSC has taken the position that the existing Kewaunee TS satisfactorily define the term OPERABLE and that no revision to that definition is necessary. The licensee has proposed that the r.eview criteria can be met by revision of the Kewaunee LCOs, and has submitted proposed changes to the Kewaunee TS to so revise the LCOs.

• The Kewaunee TS state:

A component or system is operable when it is capable of performing its intended function within the required range. The system or component shall be considered to have this capability when: (l} it satisfies the limiting conditions for operation defined in Specification 3, and (2) it has been tested periodically in accordance with Specification 4, and has met its performance requirements. 5 This definition is less comprehensive than that in the MTS, as it does not explicitly address support equipment or electrical power sources.

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The proposed revisions to the LCOs for-the Essential Safety Features (ESF) and Auxiliary Systems require that, if operability is not restored to an inoperable ESF system within a specified time limit, action must be initiated within one hour to: achieve Hot Standby within the next six hours; achieve Hot Shutdown within the following six hours; achieve Cold Shutdown within an additional 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. While the time allowed to attain Cold Shutdown from Hot Shutdown is greater than that specified in the MTS, the 48-hour period for transition to Cold Shutdown for Kewaunee has been previously reviewed and approved by the NRC for Kewaunee, and is therefore acceptable. 7 3

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• The licensee may also want to add the following (from the NRC review criteria) to his TS:

When a system, subsystem, train, component or device is determined to be inoperable solely because its emergency power source is inoperable, or solely because its normal power source is inoperable, it may be considered OPERABLE for the purpose of satisfying the requirements of its applicable Limiting Condition for Operation, provided: (a) its corresponding normal or emergency power source is OPERABLE: and (b) all of its redundant system(s), subsystem(s), train(s),

component(s) and device(s) are OPERABLE, or likewise satisfy the requirements of this specification. Unless both conditions (a) and (b) are satisfied, within two hours action shall be initiated to place the unit in at least HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, in at least HOT SHUTDOWN 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 at least COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. This specification is not applicable in MODES 5 or 6.

• . Inclusion of the above will provide the license~ flexibility in complying with the constraints of the more comprehensive definition of OPERABLE, and will meet the NRC review criteria.

5. REFERENCES

1. NRC letter, 0. G. Eisenhut, to All Power Reactor Licensees, dated April 10, 19SO.

2. NRC internal memorandum, S. Miner to S. Varga, et. al., 11 Definition of Operability--Multi-Plant Item 0-17,U dated March 26, 1981.

3. Wisconsin Public Service Corporation Letter, E. R. Mathews, to NRC,

0. G. Eisenhut, dated December 23, 1980.

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' NRC 111-811 FORM 335 e

U.S. NUCLEAR REGULATORY COMMISSION

1. REPORT NUMeER IAss1gnedbij"C)DC}

. . :~

BIBLIOGRAPHIC DATA SHEET EGG-EA-6400

4. TITLE ANO SUBTITLE 2. fl.ewe bl1111k)

Definition of Operable, Kewaunee Nuclear Power Plant 3. RECIPIENT'S ACCESSION NO.

7. AUTHOR ISi . 5. DATE REPORT COMPLETED MONTH I YEAR F. Farmer December lQs:!1

9. PERFORMING ORGANIZATION NAME ANO MAILING AOORESS /Include Zip Code/ DATE REPORT ISSUED MONTH I YEAR December 1983 EG&G Idaho, Inc. 6. fl.eave blank)

Idaho Fa 11 s, ID 83415

a. fl.eave blank I

12. SPONSORING ORGANIZATION NAME ANO MAILING ADDRESS /Include Zip Code/

10. PROJECTITASK/WORK UNIT NO.

Division of Licensing Office of Nuclear Reactor RegulatiQa 11. FIN NO.

u.s. Nuclear Regulatory Commission Washington, DC 20555 A6429

13. TYPE OF REPORT l PE RIOO cove RE o /tnclus1ve dares/

15. SUPPLEMENTARY NOTES 14. fl.eave olank I

16. ABSTRACT 1200 words or less)

This report reviews the extent of compliance of existing and proposed Kewaunee Technical Specifications with clarification of the definition and application of the term OPERABLE which have been required by the U. S. Nuclear Regulatory Commission.

17. KEY WORDS ANO DOCUMENT ANALYSIS l 7a. DESCRIPTORS 17b. IDENTIFIERS.'OPEN-ENDED TERMS

18. AVAILABILITY STATEMENT 19. SECURITY CLASS /This reoorrl 21 ,'JO OF PAGES Unclassified Unlimited 20. iJCURI TY CLASS /This oagel nclassified 22 PRICE s

N RC FORM 335 111-811 J