ML021230038

Request for Additional Information Related to Request for Proposed Amendment to Revise Knpp TS Section 3.10.f

ML021230038
Person / Time
Site:	Kewaunee
Issue date:	05/03/2002
From:	John Lamb NRC/NRR/DLPM/LPD3
To:	Warner M Nuclear Management Co
References
TAC MB3825
Download: ML021230038 (6)

Text

May 3, 2002 Mr. Mark Warner Site Vice President Kewaunee and Point Beach Nuclear Power Plants Nuclear Management Company, LLC 6610 Nuclear Road Two Rivers, WI 54241

SUBJECT:

KEWAUNEE NUCLEAR POWER PLANT - REQUEST FOR ADDITIONAL INFORMATION RELATED TO REQUEST FOR PROPOSED AMENDMENT TO REVISE KEWAUNEE NUCLEAR POWER PLANT TECHNICAL SPECIFICATION SECTION 3.10.f (TAC NO. MB3825)

Dear Mr. Warner :

By letter dated January 14, 2002, Nuclear Management Company, LLC (NMC or the licensee) submitted a request for a proposed amendment to revise Kewaunee Nuclear Power Plant Technical Specifications Section 3.10.f. The proposed amendment requests an allowed outage time for the Individual Rod Position Indicator (IRPI) system of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> with more than one IRPI per group inoperable.

The Nuclear Regulatory Commission (NRC) staff finds that the additional information identified in the enclosure is needed.

A draft of the request for additional information was e-mailed to Mr. G. Riste (NMC) on April 11, 2002.

A phone call was held between G. Riste (NMC), T. Maloney (NMC), S. Peters (NRC), and myself on April 19, 2002, to discuss the questions to ensure that there was no misunderstanding. Also, the phone call established a mutually agreeable response date of 30 days from the date of this letter.

Please contact me at (301) 415-1446 if future circumstances should require a change in this response date.

Sincerely,

/RA/

John G. Lamb, Project Manager, Section 1 Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-305

Enclosure:

Request for Additional Information cc w/encl: See next page

May 3, 2002 Mr. Mark Warner Site Vice President Kewaunee and Point Beach Nuclear Power Plants Nuclear Management Company, LLC 6610 Nuclear Road Two Rivers, WI 54241

SUBJECT:

KEWAUNEE NUCLEAR POWER PLANT - REQUEST FOR ADDITIONAL INFORMATION RELATED TO REQUEST FOR PROPOSED AMENDMENT TO REVISE KEWAUNEE NUCLEAR POWER PLANT TECHNICAL SPECIFICATION SECTION 3.10.f (TAC NO. MB3825)

Dear Mr. Warner :

By letter dated January 14, 2002, Nuclear Management Company, LLC (NMC or the licensee) submitted a request for a proposed amendment to revise Kewaunee Nuclear Power Plant Technical Specifications Section 3.10.f. The proposed amendment requests an allowed outage time for the Individual Rod Position Indicator (IRPI) system of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> with more than one IRPI per group inoperable.

The Nuclear Regulatory Commission (NRC) staff finds that the additional information identified in the enclosure is needed.

A draft of the request for additional information was e-mailed to Mr. G. Riste (NMC) on April 11, 2002.

A phone call was held between G. Riste (NMC), T. Maloney (NMC), S. Peters (NRC), and myself on April 19, 2002, to discuss the questions to ensure that there was no misunderstanding. Also, the phone call established a mutually agreeable response date of 30 days from the date of this letter.

Please contact me at (301) 415-1446 if future circumstances should require a change in this response date.

Sincerely,

/RA/

John G. Lamb, Project Manager, Section 1 Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-305

Enclosure:

Request for Additional Information cc w/encl: See next page DISTRIBUTION PUBLIC CLi FAkstulewicz THarris PDIII-1 Reading RLanksbury, RIII JLamb ACRS LRaghavan OGC ADAMS ACCESS NO: ML021230038 OFFICE PDIII-1/PM PDIII-1/LA PDIII-1/SC NAME JLamb THarris LRaghavan DATE 05/03/02 05/03/02 05/03/02 OFFICIAL RECORD COPY

Kewaunee Nuclear Power Plant cc:

Foley & Lardner ATTN: Bradley D. Jackson Nuclear Asset Manager One South Pinckney Street Wisconsin Public Service Corporation P.O. Box 1497 600 N. Adams Street Madison, WI 53701-1497 Green Bay, WI 54307-9002 Chairman Plant Manager Town of Carlton Kewaunee Nuclear Power Plant Route 1 Nuclear Management Company, LLC Kewaunee, WI 54216 North 490, Highway 42 Kewaunee, WI 54216-9511 Gerald Novickus, Chairman Kewaunee County Board Kewaunee County Courthouse Kewaunee, WI 54216 Attorney General 114 East, State Capitol Madison, WI 53702 U.S. Nuclear Regulatory Commission Resident Inspectors Office Route #1, Box 999 Kewaunee, WI 54216 Regional Administrator - Region III U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, IL 60532-4531 James D. Loock, Chief Engineer Public Service Commission of Wisconsin 610 N. Whitney Way Madison, WI 53707-7854 Michael D. Wadley Chief Nuclear Officer Nuclear Management Company, LLC 700 First Street Hudson, WI 54016

REQUEST FOR ADDITIONAL INFORMATION REGARDING REQUEST FOR PROPOSED AMENDMENT TO KEWAUNEEE NUCLEAR POWER PLANT TECHNICAL SPECIFICATIONS (TSs) SECTION 3.10.f (TAC NO. MB3825)

1. With one rod position indicator channel inoperable, the current TS 3.10.f.1.A requires the determination of position of the rod cluster control, ... at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, or subsequent to rod motion exceeding a total displacement of 24 steps, whichever occurs first. This TS implies that, following rod displacement, an immediate check of the rod position is required, i.e. prior to the 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> already in effect. However, the proposed TSs would require an inspection within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> following the same rod displacement.

Describe the safety significance of this change. Why is it acceptable to set 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> as an inspection time when a more immediate requirement was set in the original TSs?

2. It is our understanding that Kewaunees Final Safety Analysis Report (FSAR) Section 7.3.2, System Design, refers to the control rod demand position indication system as the Digital System. In reference to the Digital System, Kewaunees FSAR states:

The digital and analog systems are separate systems; each serves as backup for the other. Operating procedures require the reactor operator to compare the digital and analog readings upon receiving a rod deviation alarm. Therefore, a single-failure in rod position indication does not in itself lead the operator to take erroneous action in the operation of the reactor.

10 CFR Part 50, Appendix A, General Design Criteria for Nuclear Power Plants, Criterion 13, Instrumentation and Control, states that instrumentation to monitor variables and systems over their operating ranges during normal operation, anticipated operational occurrences, and accident conditions must be operable. In conjunction with this definition of instrumentation, NUREG-1431 Vol.1, Rev. 2, Standard Technical Specifications Westinghouse Plants, TS 3.1.7, Rod Position Indication indicates that the Demand Position Indication System shall be operable.

However, it is our understanding that the proposed TSs do not contain requirements for the Digital System (Demand Position Indication System) to be operable. Given that both GDC 13 and NUREG-1431 indicate that the digital system shall be operable, and that the digital system operability is required to prevent erroneous action as a result of a single-failure, explain why it is acceptable in the proposed TSs to exclude the conditions of NUREG-1431, TS 3.1.7.D, which require demand position indicator operability.

ENCLOSURE