ML20137C523
| ML20137C523 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 03/18/1997 |
| From: | Langenbach J GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 6710-97-2101, GL-89-10, GL-96-05, GL-96-5, NUDOCS 9703250032 | |
| Download: ML20137C523 (3) | |
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GPU Nuclear,lnc.
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Route 441 South NUCLEAR F**t O'fic* B** "80 Middletown, PA 17057-0480 Tel 717-B44-7621 March 18,1997 6710-97-2101 U. S. Nuclear Regulatory Commission Attn.: Document Control Desk Washington, DC 20555
Dear Sir:
Subject:
Three Mile Island Nuclear Station, Unit 1 (TMI-1)
Operating License No. DPR-50 Docket No. 50-289 GPU Nuclear Response to Generic Letter (GL) 96-05 7
References:
- 1. NRC Generic Letter 96-05, dated September 18,1996," Periodic Verification of Design-Basis Capability of Safety-Related Motor-Operated Valves."
- 2. BWR Owners Group (BWROG) Topical Report, NEDC-32719 Class II,
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"BWR Owners Group Program on Motor-Operated Valve (MOV)
Periodic Verification", dated March 1997. (BWROG Project No. 691).
- 3. BWR Owners Group Topical Report, NEDC-32264-A, Revision 2,
" Application of Probabilistic Safety Assessment to Generic Letter 89-10 Implementation," dated September 1996. (BWROG Project No. 691).
Generic Letter (GL) 96-05 (Reference 1) requested that licensees establish a program to verify on a periodic basis that safety-related Motor-Operated Valves (MOVs) continue to be capable of performing their safety related functions within the current licensing basis of the facility.
This letter provides the GPU Nuclear 180 day response for TMI-l which includes a summary description of the MOV Periodic Verification program for TMI-1.
GPU Nuclear is a member of the Joint Owners Group (JOG) MOV Periodic Verification E
l committee and the BWR Owners Group. Accordingly, TMI-1 is participating in the JOG E-i periodic verification program. The details of that program were provided to the NRC in a g:
3 BWR Owners Group Topical Report (TR) NEDC-32719 (Reference 2) which was submitted g'
to the NRC on March 7,1997. Essential elements of the program are static testing and g
dymanic testing.
9703250032 970318 E'
PDR ADOCK 05000209 g
Static Testing:
All valves in the TMI GL 89-10 MOV Program will be statically tested at a frequency
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based on margin and safety significance. The test frequency matrix is provided in
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" 6710-97*21'01 Page 2 of 2 NEDC-32719 (Reference 2). Margin calculations for each MOV willinclude consideration for the uncertainties defined in the TR (Reference 2). Safety significance will be ranked based on NEDC 32264 (Reference 3). The maximum interval between static tests will not exceed 10 years (5 refueling intervals).
Dynamic Testing:
GPU Nuclear will perform dynamic testing of the TMI-l valves assigned by the JOG.
Results from JOG dynamic testing will be periodically assessed and factored into the TMI-l Periodic Verification program.
All MOVs in the GL 89-10 program are statically tested periodically to ensure that positive margin for operability is maintained. This is in addition to the stroke time testing currently required by the Inservice Testing (IST) Program. TMI will modify the static test frequency for all MOVs to that defined by the JOG Periodic Verification program matrix starting with j
the Cycle 12 Refueling (12R) Outage, which is scheduled to begin in September 1997.
Dynamic testing required to support the JOG program will also begin during the 12R Outage. Changes to the JOG Periodic Verification program resulting from NRC review and approval will be incorporated into the TMI-l Periodic Verification program within
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3 months following NRC approval of the TR, but not before the 12R Outage.
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1 The TMI-l MOV Periodic Verification program, including the references listed above, will be available at the TMI site for NRC review during the inspection by NRC Region I which is scheduled for September 1997 and the results from initial testing in accordance with the program will be available for review following the 12R Outage, which is scheduled to end in October 1997.
Sincerely Nd James W. Lange ch Vice President and Director, TMl MRK Attachment cc:
Administrator, NRC Region I NRC Sr. Project Manager NRC Sr. Resident Inspector
l
- /6710-971f01 2
Attachment i
.i METROPOLITAN EDISON COMPANY JERSEY CENTRAL POWER AND LIGHT COMPANY j
PENNSYLVANIA POWER AND LIGHT COMPANY GPU NUCLEAR INCORPORATED Three Mile Island Nuclea-Station, Unit 1 (TMI-1)
Operating License No. DPR-50 Docket No. 50-289 i
I, James W. Langenbach being duly sworn, state that I am a Vice President and Director of GPU Nuclear, Inc. and that I am duly authorized to execute and file this response on behalf of GPU Nuclear. To the best of my knowledge and belief, the statements contained in this document are true and correct. To the extent that these statements are not based on my personal knowledge, they are based upon information by other GPU Nuclear employees and/or consultants. Such information has been reviewed in accordance with company practices and I believe it to be reliable.
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' James W. Lange ach Vice President and Director, TMI 1
Signed and sworn before me this l
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day of 1997.
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