ML20244C332
| ML20244C332 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 06/08/1989 |
| From: | Shell R TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 89-06, 89-6, NUDOCS 8906140218 | |
| Download: ML20244C332 (2) | |
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TENNESSEE VALLEY' AUTHORITY y
1 5N 157B Lookout' Place o
JUN 081989-
- U.S. Nuclear Regulatory Comraission.
ATTN:. Document Control Desk Washington, D.C.
20555.
Gentlemen:i In theiMatter of
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Docket Nos. 50-327-Tennessee Valley Authority
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50-328 S',QUOYAH NUCLEAR PLANT (SQN) UNITS 1 AND 2 - FACILITY OPERATING LICENSES t
DPR-77 AND DPR SPECIAL REPORT 89-06
'The enclosed special report provides details-concerning fire detectors and sprinklers not returned to service in the required 14 days as specified in Technical Specifications 3.3.3.8 and 3.7.11.2.
This report also serves to
'. update information provided'in Special Report 88-03.
If you have any questions concerning this submitt'al, please telephone M.'A. Cooper at (615) 843-6651.
Very truly yours.
TENNESSEE VALLEY AUTHORITY knager,'NuclearLicensing and' Regulatory Affairs
. Enclosures cc (Enclosures):
.Ms.
S.-C. Black, Assistant-Director
'for Projects TVA Projects Division U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike
.'Rockville, Maryland 20852 Mr. B. A. Wilson, Assistant Director for Inspection Programs TVA Projects Division U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323
/
Sequoyah Resident Inspector l
[
Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy Daisy, Tennessee 37379 8906140218 890608 PDR. ADOCK 05000327 An Equal Opportunity Employer
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ENCLOSURE 1 Description of Event I
On May 1, 1989, two fire protection "Out of Service" permits (89-092, 093) were written to remove fire / smoke detectors and water sprinklers in the control building to facilitate the removal and replacement of the suspended ceiling over the operator's living area on elevation 732 of the control building. The suspended ceiling is being replaced to fulfill a commitment made in special report 38-03.
The permits required compensatory measures (fire watch) be taken to provide fire detection and protection while the normal fire detection and suppression systems were out of service. However, the ceiling replacement was not accomplished before the fire protection permits expired. When the permits were implemented, limiting conditions for operation (LCOs) 3.3.3.8 and 3.7.11.2 were entered (May 2, 1989, at 0835 Central Standard Time [ CST)) with an action statement to restore the inoperable instruments and systems to operable status within 14 days.
Potential reportable occurrence (PRO) 1-89-115 was initiated at 0015 CST on May 15, 1989, when it became apparent that the fire detection and suppression system was not going to be returned to service within the required timeframe.
Cause of the Event The replacement of the suspended ceiling was not completed within 14 days because of the complexity of the work involved.
In addition to the original four ceilings identified as needing to be replaced (reference special report 88-03), six other ceilings were discovered (May 3, 1989) as also requiring replacement. The complexity of the work involved and the additional ceilings being identified prevented the completion of the work activity as originally scheduled. The original commitment as stated in special report 88-03 has been completed.
Analysis of the Event This special report is being submitted as required by the action statement (b) of LCOs 3.3.3.8 and 3.7.11.2.
A roving fire watch was established to inspect the control building, elevation 732, Rooms C2, C3, C4, C5, C6, C7, C8, C9, C10, and C11 on an hourly basis, as required by action statement (a) of LCOs 3.3.3.8 and 3.7.11.2.
Fire hose stations located in the stairwells on each end of elevation 732 will be used should a fire be detected in Rooms C2 through C11. The existing fire detection and fire suppression system for the unaffected areas of the control building, elevation 732, is operable and would actuate in the event of a fire.
Corrective Action The Nuclear Engineering evaluation determined that the existing suspended ceiling needs to be replaced with a new suspended ceiling that will provide a 1.5-hour fire barrier. A roving fire watch at a regular interval of one hour was established and will be maintained until the replacement of the suspended ceiling is completed and the sprinkler service and detectors are returned to service. The sprinkler and fire detection systems are expected to be returned to service by July 30, 1989. Condition adverse to quality report SQF880015 will be used to document the evaluation and actions taken.
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