ML20063P348
| ML20063P348 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 10/07/1982 |
| From: | Green H TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| RO-82-003, RO-82-3, NUDOCS 8210130317 | |
| Download: ML20063P348 (2) | |
Text
'e' TENNESSEE VALLEY AUTHORITY CH AT TANOOG A, TENNESSEE 374o1 1750 Chestnut Street Tower II October 7, 1982
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Mr. James P. O'Reilly, Director g
gn U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement cf Region II cp 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
TENNESSEE VALLEY AUTHORITY - SEQUOYAH NUCLEAR PLANT UNIT 1 - DOCKET NO. 50-327 - FACILITY OPERATING LICENSE DPR SPECIAL REPORT 82-3 The enclosed report provides details concerning fire detection instrumentation being inoperable for a period in excess of 14 days. This report is submitted in accordance with Sequoyah unit 1 Technical Specifications 3.3.3.8 and 6.9.2.
Very truly yours, EE VALLEY AUTHORITY TENy l
een Di ector of Nuclear Power
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Enclosure cc (Enclosure):
Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555 Records Center Institute of Nuclear Power Operations Suite 1500 1100 Circle 75 Parkway Atlanta, Georgia 30339 NRC Inspector, Sequoyah
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.e-y, SEQUOYAH NUCLEAR PLAh'T SPECIAL REPORT 82-3 UNIT 1 Event Description On July 31, 1982, fire detector 74F, in fire zone 70, was in the alarm state due to a steam leak in the spent resin storage tank area. The fire dLcector is located in the spent resin storage tank room which is a high radiation area making it inaccessible to maintenance personnel.
Since the alarm would not clear due to the steam leak, it was decided by plant maintenance to remove the entire zone from service; however, Operations personnel mistakenly thought only the detector was being disabled and not the entire zone. A temporary alteration control form (TACF) was issued to allow the fire zone to be removed from service.
On August 1, 1982, the steam leak was repaired, but the fire zone was not placed back in service. Since Operations personnel thought only the detector had been disabled, the TACF was lef t in place becatise engineering change notice (ECN) 5454 had been issued to remove fire detector 74F for ALARA considerations.
On September 9, 1982, during a review of TACFs, it was discovered that the fire zone had not been placed back in service. Upon discovery, the fire zone was placed back in service and no additional corrective action is planned. The removal of the fire detector will not violate the technical specifications since five detectors will remain in fire zone 70.
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