ML20082D358
| ML20082D358 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 03/24/1995 |
| From: | Shell R TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9504100059 | |
| Download: ML20082D358 (3) | |
Text
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4 Hl4 Tennessee vawy Aumonty. Post on.ce son 2000 sod -Damy Tennessee 37379 March 24, 1995 U.S. Nuclear Regulatory Commission ATTN Document Control Desk washington, D.C.
20555 Centlemen In the Matter of
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Docket No. 50-327 Tennessee Valley Authority
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SEQUOYAH NUCLEAR PLANT (SON) - UNIT 1 - FACILITY OPERATING LICENSE DPR TECHNICAL SPECIFICATION (TS) 3.3.3.8 - SPECIAL REPORT 95-02 The enclosed special report provides details concerning the inoperability of a fire detection instrument in Fire Zone 357 located in Unit I containment near reactor coolant pump No. 2.
The detector will remain inoperable for a period of time greater than allowed by TSs.
This report is being submitted in accordance with TS Action Statement 3.3.3.8.b.
If you have any questions concerning this submittal, please telephone J. W. Proffitt at (615) 843-6651.
Sincerely, R.
H. Shell Manager SQN Site Licensing Enclosure cc:
See page 2 9504100059 950324 PDR4.ADOCK 05000327 S
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.Mr. D. E. LaBarge,_ Project Manager i
U.S. Nuclear Regulatory Commission f
One White Flint,' North-11555 Rockville Pike Rockville, Maryland 20852-2739 NRC Resident Inspector Sequoyah Nuclear Plant j
2600 Igou Ferry Road Soddy-Daisy, Tennessee 37379-3624 Regional Administrator-U.S. Nuclear Regulatory Commission Region II ll 101 Marietta Street, NW, Suite 2900
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' ENCLOSURE I
SEQUOYAH. NUCLEAR PLANT UNIT 1 SPECIAL REPORT 95-02 Descriotion of Condition On' March 5, 1995, with Unit 1 operating in Mode 1 at approximately 34 percent reactor power, the fire detector located near Unit l' reactor coolant pump'No. 2 was declared inoperable. Limiting Condition for
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Operation (LCO) 3.3.3.8 was entered. The detector cannot be repaired.
until the next outage of sufficient duration. The time required to restore the instrument to an operable status will exceed the technical specification allowable timeframe for a fire detector to be nonfunctional.
Cause of condition i
i The cause of the detector failure is unknown at this time. With the-I detector located in lower containment, the area is inaccessible during l
power operation. Troubleshooting and maintenance cannot be performed until the next outage.
1 Corrective Action l
In accordance with LCO 3.3.3.8 Action Statement (a), the Unit 1 lower containment air temperature is being monitored at least once each hour and will continue to be monitored at this frequency until the detector is restored to'an operable status. The detector is scheduled to be restored i
to an operable status during the next Mode 5 outage of sufficient j
duration.
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