ML20126B111
| ML20126B111 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 12/18/1992 |
| From: | Broughton T GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| C311-92-2163, C312-92-2088, NUDOCS 9212210385 | |
| Download: ML20126B111 (1) | |
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GPU Nuclear Corporation gf Post Office Box 480 Route 441 South
%ddletown, Pennsylvania 1705/ 0191 717 944 7621 TELEX 84 2386 Writer's Direct Dial Number:
(717) 948-8005 December 18, 1992 C311-92-2163 C312-92-2088 U.S. Nuclear Regulttory Commission Attn:
Document Control Desk Hashington, DC 20555
Dear Sirs:
Subject:
Three Mile Island Nuclear Station, Unit 1 (THI-1) i Three Mile Island Nuclear Station, Unit 2 (THI-2)
Operating License No. DPR-50 and DPR-73 Docket No. 50-289 and 50-320 Compensatory Measures During Upgrade to Secondary Alarm Station THI recently completed an upgrade to the Secondary Alarm Station (SAS).
During the upgrade modification work, the SAS operator was repositioned in the Central-Alarm Station which resulted in a deviation to the THI Security Plan. This
-deviation was recognized as part of the modification and compensatory treasures were planned and implemented during the work period.
The measures were evaluated prior to performing the upgrade and were determined-to meet the guidance contained in NUREG 1045. The compensatory measures did not decrease the effectiveness of the Security Plan and were implemented in accordance with 10 CFR 50.54(p)(2). Although the Security plan itself was never revised as these compensatory measures were temporary, this letter serves to meet the 60-day reporting requirement contained in 10.CFR 50.54(p)(2).
The upgrade has enhanced the capabilities of the SAS. The work scope was-discussed between J. Stacey, Security Manager THI; Greg Smith, NRC; and David Limroth, NRC on May 8, 1992.
It was agreed that GPU Nuclear would inform l
the NRC-when the upgrade was completed. 'The specific details of the l
compensatory measures and the SAS upgrade will be discussed with the NRC during lc the next NRC Security Inspection at TMI.
l Sincerely, p
nih -
- M 2j,~1U)
T. G. Br ghton o
Vice President and Director, THI-l
'- rue DVH/ emf 88 OQ cc: Region 1 Administrator g
THI-l Senior' Project Manager I
THI Senior Resident' Inspector y
k Project Manager Jj Projeci dga,gg@Qigggggt4ot Genera: Putsc uw :es corporatio, p
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