ML20199C033
| ML20199C033 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 11/13/1997 |
| From: | Eaton R NRC (Affiliation Not Assigned) |
| To: | Roche M GENERAL PUBLIC UTILITIES CORP. |
| References | |
| TAC-M94856, NUDOCS 9711190192 | |
| Download: ML20199C033 (3) | |
Text
-
November 13, 1997
-Mr. Michael B. Roche
=Vice President and Director GPU Nuclear Corporat' ion Oyster Creek Nuclear Generating Station P.O. Box 388 Forked River, NJ 08731
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDING PROPOSED CHANGES TO THE EMERGEFtY DIESEL ALLOWED OUTAGE TIME (TAC NO. M94856)
Dear Mr. Roche:
By letter dated June 13, 1996, you provided a response to our request for additional information (RAI) dated March 21, 1996. Additionally, during a conference call on August 20, 1996, the NRC staff expressed some additional concerns with your RAI response.
Accordingly, our concerns are being provided in the enclosed RAI.
If you have anj questions regarding this request please contact Ronald B. Eaton at (301) 415-3041.
Sincerely, Original signed by Ronald B. Eaton, Senior Project Manager Project Directorate I-3 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket No. 50-219
Enclosure:
As stated cc w/ encl: See next page DISTRIBUTIG'l
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"E" = Copy with attachment /enclc,;vore "N" - No copy
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t M. Roche Oyster Creek Nuclear GPU Nuclear Corporation Generating Station cc:
Err.ast L. Blake, Jr., Esquire-Shaw, Pittman, Potts & Trowbridge 2300 N Street, NW Washington, DC 20037.
Regional Administrator, Region !
U.S. Nuclear Regulaton/ Comission 475 Allendale Road King of Prussia, PA 19406-1415 BWR Licensing Manager GPU Nuclear Corporation 1 Upper Pond Road Parsippany, NJ_07054 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 98731 Resident Inspector c/o U.S. Nuclear tiegulatory Comission 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 W
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REQUEST FOR ADDITIONAL INFORMATION (RAI) 1..
is the AAC system covered under the Maintenance Rule? Provide details including.
reliability and availability (individual combustion turbine (CT) and combined) of the AAC system.
?..
What is the Maintenance Rule performance criteria goal for the EDGs?
3.
The staff requires that Oyster Creek TS include verification that the AAC source is
. functional by verifying it starts and achieves steady state voltage and frequency within the required time, the AAC power source is capaole of being aligned to the safety bus associated with the inoperable EDG, and this capability is verified once every shift thereafter. Submit your proposed TS that include the above staff requirements.
L4.
The answers to previous RAI questions 2a,2e, and 2f were not clear to the staff.
Provide the procedure sections which covers these requirements.
5.
Do the EDGs at Oyster Creek have an emergency override (automatic feature to bring it back to standby position during testing) of the test mode to permit response to an SI signal?
6.
Accordirm to the current TS an EDG can be inopersble up to 7 days in any 30 day period. l ne staff requires that the phrase "in any 30 day period" should be retained in the TS. Therefore, revise the proposed TS accordingly.
7.
The staff feels that testing the EDG at 20% of the full load does not provide assurance that the EDG will perform its intended function. The staff recommends that the EDG should be loaded to its continuous rating during the monthly testing as required by the
- standard technical specifications Provide your justification for not testing the EDG at i
- fullload.
8.
Oyster Creek EDGs have experienced full load rejection on several occasions during surveillance testing ove.' the years. Did this occur during power operation or shutdown?
What were the voltage and frequency at the safety bus and at load terminals?
9.
The current TS requires that the EDG batte;y capacity test be performed once per 24 months during shutdown. Yourjustification to perform this test during power operation is inadequate. Provide full justification including risk insights, compensatory
= measures, and safety benefits to perform this test during power operation and the duration of this test and time required to charge the battery to at least 95 percent capacity (battery operable).
Enclosure 4
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