ML20138H944

Requests Addl Info Re Technical Specification Change Request for 24 Month Surveillance Extensions

ML20138H944
Person / Time
Site:	Oyster Creek
Issue date:	01/03/1997
From:	Eaton R NRC (Affiliation Not Assigned)
To:	Roche M GENERAL PUBLIC UTILITIES CORP.
References
TAC-M96906, NUDOCS 9701070099
Download: ML20138H944 (4)

Text

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January.3, 1997 - -'

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i Mr. Michael B. Roche ', , ,

Vice President and Director -

GPU Nuclear Corporation *

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Oyster Creek Nuclear Generating Station ,

Post Office Box 388 '

Forked River, NJ 08731 ,

SUBJECT:

REQUEST FOR ADDITIONAi. INFORMATION REGARDING TECHNICAL SPECIFICATION CHANGE REQUEST FOR 24-MONTH SURVEILLANCE EXTENSIONS (TAC N0. M96906)

Dear Mr. Roche:

By letter dated October 10, 1996, you requested the subject technical 1

specification change request. The NRC staff has reviewed your request and determined that additional information is needed to complete our evaluation.

Accordingly, enclosed is the requast for additional information. I order to meet our review schedule, I request that you provide the answers within 45 days of receipt of this letter, or sooner.

Questions regarding this request should be addressed to Ronald B. Eaton at (301) 415-3041.

Sincerely, (Original Signed By)

Ronald B. Eaton, Senior Project Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regul;. tion Docket No. 50-219

Enclosure:

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% . . . . . ,o Janitary 3. 1997 Mr. Michael B. Roche Vice President and Director l GPU Nuclear Corporation Oyster Creek Nuclear Generating Station Post Office Box 388 Forked River, NJ 08731

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION REGARDING TECHNICAL SPECIFICATION CHANGE REQUEST FOR 24-MONTH SURVEILLANCE EXTENSIONS (TAC NO. M96906)

Dear Mr. Roche:

By letter dated October 10, 1996, you requested the subject technical specification change request. The NRC staff has reviewed your request and determined that additional information is needed to complete our evaluation.

Accordingly, enclosed is the request for additional information. In order to meet our review schedule, I request that you provide the answers within 45

, days of receipt of this letter, or sooner.

Questions regarding this request should be addressed to Ronald B. Eaton at (301) 415-3041.

Sincerely, h{$

n d B. Eaton, Senior Project Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket No. 50-219 4

Enclosure:

As stated 1

cc w/ encl: See next page 9

I

M. Roche Oyster Creek Nuclear GPU Nuclear Corporation Generating Station cc:

) Ernest L. Blake, Jr., Esquire

, Shaw, Pittman, Potts & Trowbridge 2300 N Street, NW.

Washington, DC 20037 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 1 BWR Licensing Manager i GPU Nuclear Corporation 2

1 Upper Pond Road l Parsippany, NJ 07054 l

Mayor Lacey Township 818 West Lacey Road '

Forked River, NJ 08731 Licensing Manager Oyster Creek Nuclear Generating Station Mail Stop: Site Emergency Bldg.

P.O. Box 388 Forked River, NJ 08731 Resident Inspector c/o U.S. Nuclear Regulatory Commission P.O. Box 445 Forked River, NJ 08731 Kent Tosch, Chief New Jersey Department of Environmental Protection Bureau of Nuclear Engineering CN 415 Trenton, NJ 08625

4 I

REQUEST FOR ADDITIONAL INFORMATION 4 OYSTER CREEK NUCLEAR GENERATING STATION

TSCR N0. 203

)

j Generic Letter (GL) 91-04 Enclosure 2, GUIDANCE FOR ADDRESSING THE EFFECT OF

! INCREASED SURVEILLANCE INTERVALS ON INSTRUMENT DRIFT AND SAFETY ANALYSIS

! ASSUMPTIONS, explicitly identifies seven areas that should be addressed when proposing to increase instrument surveillance intervals from 18 to 24 months.

j Addressing these issues provides an acceptable basis for increasing the calibration interval. The intent is to demonstrate that an increased calibration interval will have a small net effect on safety, that historical maintenance and surveillance data support the proposed surveillance

extensions, and that the assumptions in the plant licensing basis are still bounding. All instruments identified in Technical Specification Change Request (TSCR) No. 203 should be considered under the areas described in Enclosure 2 of GL 91-04.

In TSCR No. 203, the justification for changes did not address the areas mentioned above. In addressing the issues described in GL 91-04, provide where appropriate, applicable data, assumptions, sample calculations, descriptions, and documents in support of the extension for each instrument under consideration.

The staff considers data from the two previous fuel cycles as a reasonable quantity of data for review. However, pending data review by the staff, additional data and/or information may be requested. Where historical data is not available, vendor data can be used to provide instrument error insights.

The program for monitoring the effects of increased calibration interval should ensure that existing procedures pre.ide data for evaluation of the effects of increased calibration intervals and confirm that the estimated errors for instrument drift with increased calibration intervals are within the limits projected.

Enclosure