ML20057E926
| ML20057E926 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 10/07/1993 |
| From: | Fenech R TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 93-19, NUDOCS 9310130374 | |
| Download: ML20057E926 (3) | |
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Tennewee Val;ey Authorny Post Ofke Box Koo, Soddy Dasy. Tennessee 37379 2000 l
Robert A Fenech
%ce Presideit. Supnyah itxtear Piant 8
1 October 7, 1993 U.S. Nuclear Regulatory Commission
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ATTN: Document Control Desk
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Washington, D.C. 20555 Gentlemen:
In the Matter of
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Docket No. 50-328 Tennessee Valley Authority
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l SEQUOYAll NUCLEAR FIANT (SQN) - UNITS 1 AND 2 - FACILITY OPERATING l
LICENSES DPR-77 AND DPR SPECIAL REPORT 93-19 i
The enclosed special report provides details concerning the inoperability r
of the fire suppression water system in the auxiliary building as initially reported by telephone at 0244 Eastern daylight time (EDT) on September 25, 1993, and confirmed by facsimile on September 27, 1993, as required by Technical Specification (TS) Action Statement 3.7.11'.1(b)(2)(a) and (b), respectively.
.l Details are provided in the enclosure. This condition, which involves both Units 1 and 2, is being reported in accordance with TS Action Statement 3.7.11.1(b)(2)(c).
If you have any questions concerning this submittal, please telephone K. E. Meade at (615) 843-7766.
Sincerely, RHe/A l
Robert A. renech Enclosure cc:
See page 2 120079 05000328.k.
9310130374 931007 h
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U.'S. Nuclear Regulatory Commission Page 2.
October 7, 1993 cc (Enclosure):
Mr. D. E. LaBarge, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852-2739 NRC Resident Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy-Daisy, Tennessee 37379-3624 Regional Administrator U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 l -
Atlanta, Georgia 30323-2711 1
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ENCLOSURE SEQUOYAH NUCLEAR PLANT (SQN) UNITS 1 AND 2 14-DAY FOLLOW-UP REPORT SPECIAL REPORT 93-19 l
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f SQN Technical Specification (TS) Limiting Condition for Operation l
(LCO) 3.7.11.1 requires that the fire suppression water system be operable through the last valve ahead of the water pressure alarm device on each sprinkler or hose standpipe and through the last valve ahead of the deluge valve on each deluge or spray system in the auxiliary building.
Description _of Condition On September 24, 1993, at 2340 Eastern daylight time (EDT), with Unit 1 1
in Mode 5 in a refueling outare and Unit 2 in Mode 5 in a forced outage, LCOs 3.7.11.1, 3.7.11.2, and ?.7.11.4 were entered. A portion of the fire header in the auxiliary building was removed from service in order to perform maintenance. A pin-hole leak in the header, as well as a header isolation valve, was to be repaired. However, the boundary isolation valve would not seat sufficiently to establish the required i
clearance.
On September 25, 1993, at 2055 EDT, the fire suppression water system was returned to service, and the subject LCOs were exited.
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CorInclite._aclions Appropriate compensatory measures in the form of fire watches and a back-up fire suppression water system were established before the initiation of the clearance to comply with TS Action S tatements 3. 7.11.1(b), 3. 7.11. 2(a), and 3 7.11.4(a).
This event is being reported in accordance with the requirements of LCO 3.7.11.1 Action Statemcat (b)(2)(c).
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