ML20154N048
| ML20154N048 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 10/14/1998 |
| From: | Langenbach J GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 1920-98-20582, NUDOCS 9810210130 | |
| Download: ML20154N048 (1) | |
Text
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GPU Nuclear. Inc.
(
Route 441 South M dd e wn PA 17057-0480 Tel717 944 7621 I
October 14, 1998 1920-98-20582 U.S. Nuclear Regulatory Commission Attention: Document Control Desk j
Washington, DC 20555 l
Geralemen:
Subject:
Three Mile Island Nuclear Station, Unit 1 (TMI-1)
Operating License No. DPR-50 Docket No. 50-289 10 CFR 50 Appendix R Exemption Request - Additional Information As previously discussed, this letter provides GPU Nuclear's commitment to isolate the source of acetylene gas from the % inch supply line routed through fire zone CB-FA-1 when the line is not in use.
Additionally, a combustible gas detector will be installed in the radiochemistry lab in fire zone j
CB-FA-1, which is the point ofuse for the gas, to detect leakage. A remote combustible gas detector alann will be provided in the hallway outside the radiochemistry lab to ensure that it is audible at the local health physics station which is norma';y manned. This commitment supercedes the proposed i
modifications previously described in GPU Nuclear's letter to the NRC dated May 21,1998 (1920-98-20225).
Proposed plant modifications as described above would be completed by December 31,1999, consistent with the TMI-l Thermo-Lag resolution schedule, to provide the additional safety margin to support the basis for the requested 1-hour Thermo-Lag fire barrier exemption in CB-FA-1.
If additional information is required, please contact Mr. Dadd J. Distel, GPU Nuclear Licensing and Regulatory Affairs,,tt(973)316-7955.
Sincerely, l 0 i
N N
I
Jar es W. Langenbach ho Vice President and Director, TMl cc:
' Administrator, Region I - H. Miller TMI Senior Resident Inspector - W. L. Schmidt TMI-l Senior Project Manager - T. G. Colbum File No. 94032 9810210130 981014' PDR ADOCK 05C002G9 P
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