ML20086F277

Special Rept 91-17:on 911018,fire Detection Instrumentation in Fire Zones 134,135,142,143,144 & 145 & Automatic Suppression Equipment in Component Cooling HX Area Inoperable.Fire Watches Maintained

ML20086F277
Person / Time
Site:	Sequoyah
Issue date:	11/27/1991
From:	Joshua Wilson TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
91-17, NUDOCS 9112030173
Download: ML20086F277 (3)

Text

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November 27, 1991 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Centlemen:

In the Matter of ) Docket Nos. 50-327 Tennessee Valley Authority )50-32S SEQUOYAH NUCLEAR PLANT (SQN) - DOCKET NOS 50-327 AND 50-328 - FACILITY OPERATING LICENSES DPR-77 AND TECHNICAL SPECIFICATIONS (TSs) 3.3.3.3 AND 3.7.11.2 - SPECIAL REPCRT 91-17 The enclosed special report provides details concerning the inoperability cf the fire detection instrumentation in Fire Zones 134, 135, 142, 143, 144, and 145 and automatic suppression equipment for the auxiliary 1.uilding component coaling system heat exchanger area. The equipment will be out of' service until the completion of the component cooling t system heat exchanger changeout. This report is being submitted in accordance with TS Action Statement (b) of Limiting Condition for Operation (LCO) 3.3.3.8 and Action Statement (a) of LCO 3. 7.11.2.

If you have any questions concerning this submittal, please telephone M. A. Cooper at (615) 843-8924 Sincertdy, hS n^-

. L. Wilson Enclosure cc: See page 2 9112030173 911127 q"

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U.S. Nuclear Regulatary Comission November 27, 1991 cc (Enclosure):

Mr. D. E. LaBarge, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 NRC Resident Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy-Daisy, Tennessee 37379 Mr. B. A. Wilson, Project Chief U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323

h ENCLOSURE SEQUCYAH NUCLEAR PLANI (SQN)

SPECIAL REPORT 91-17 This speciel report is being rede in accordance with Technical specification a iTS) action Statement (b) of Limiting Condition f or Operation (LCO) 3.3.3.S and Action Statement (a) of LCO 3.7.11.2 for not restoring inoperable fire detectors and automatic suppression equipment to operable status within 14 days.

On Octobar 19, 1991, at 223B Eastern daylight time with Unit 1 in Mode 6 for refueling activities, LCOs 3.,.3.8 and 3.7.11.2 are entered wten fire detection instrumentetion in Zcnes 13e , 135, 142. 143, 144, and 145 and Fire Suppression Valve 0-FCV-26-183 were removed from rervice for the component ecolir.g system (CCS) ' it excranger replacement. Thic was a preparatory act because of the cuttito, gr indir.g. and welding that would 5e takir.g placa during _

the CCS heat ex; hang (r replacenent. Two centinuous anf rnving fire watches were established in accordance with TSs. Fire supprese capability is still available by manual initiation by the Fire Protect - unit.

The f Ire detection zones and it.e fire suppression valve will be returned ta service after completion cf the heat exchanger replacement betore the 'nd af the Unit 1 Cycle 5 refueling outage currently scheduled f or early Decem!er 1991.

SQS will maintain the required fire watches unt'.1 the fire deto tion and suppressian equipment is returned to service.

PL990204/233

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