ML20104B608
| ML20104B608 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 09/10/1992 |
| From: | J. J. Barton GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 92-05, 92-5, C321-92-2252, NUDOCS 9209150423 | |
| Download: ML20104B608 (2) | |
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I GPU Nuclear Corporation 3
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- n:r>88 Forked Ryoi, New Jerr.ey 08731-0388 609 971 4000 WMer's Onct Dial Number:
Septeml.er 10, 1992 C321-92-2252 U.S. Nuclear Regulatory r.ommission Attention: Document Control Desk Washington, D.C.
20555 Gentlemen.
Subject:
Oyster Creek Nuclear Generating Station Docket No. 50-219 Special Report No. 92-05 Enclosed is Special Report No. 92-05 which is submitted in accordance with technical specification 3.12.C.3.
If there are any questions, please call Mr. Michael Heller, Licensing Engineer, at (609) 971-4680.
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.r Creek Enclosure cc:
NRC Region 1 Administrator NRC Resident inspector Oyster Creek NRC Project Manager I
9209150423 920910 ADOCK0500g9 DR GPU Nuclear Corporation is a subs: diary of General Pubhc UtStes Corpora,on I
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Ovster Creek Nuclear Generatina StatioJ1 Special Report 92-05 i
Benort Q1121 September 10, 1992 Occurrence Date: July 27, 1992 Identification of Occurrence:
Condenser bay sprinkler system #2 was out of service for morr than 14 days which requires a special report per technical specification 3.12.C.3.
Description of Occurrence:
On July 27, 1992, condenser bay sprinkler system #2 was removed from service after the spurious actuation of a :;prinkler head located between the "A" and "B" condensers. The repair of the sprinkler head was delayed due to its-remote location and the radiation levels in the area. To erect scaffolding to be able to wc,rk on the failed detector was deemed inconsistent with the ALAP.A principle.
Therefore, a special tool was designed and fabricated by the Maintenance Department to enable maintenance technicians to replace the failed detector remotely. The 165 F rated solder type head was replaced with a 212'F rated solder type head on August 13, 1992.
When returning the system to service, a second sprinkler head activated in another area. This second head l
wcs also replaced with a 212 F rated solder type head and the sprinkler system was returned to service on August 14, 1992. An hourly fire watch was in place while the system was out of service in accordance with the-technical l
specifications, and the system was capable of being valved back into se vice in the event of a fire in the area.
Due to the environment that exists in the condenser bay, which gradually weakens the solder type sprinkler heads causing inadvertent actuation, 200'F l
rated quartz glass bulb type sprinkler heads are being considered for future head replacements.
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