ML20085N406

Special Rept 91-14:on 911004,auxiliary Bldg Double Fire Door A-62 Removed from Svc for More than TS Allowable Time. on 911005,biological Shield Blocks Removed for More than TS Allowable Time.Breach Permit Issued to Remove Blocks

ML20085N406
Person / Time
Site:	Sequoyah
Issue date:	11/05/1991
From:	Joshua Wilson TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
91-14, NUDOCS 9111150109
Download: ML20085N406 (3)

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J L. V#non 1 ww ,-v, ava, en m, em November 5, 1991

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U.S. Nuclear Regulatory Commission ATTN: Docun:ent Control Desk Washington, D.C. 20555 Gentlemen:

< in the Matter of ) Docket No.30-327 Tennessee Valley Authority

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SEQUOYAll NUCLEAR PLANT (SQN) - UNIT 1 - FACTLITY OPERATING LICENSE DPR SPECIAL REPORT 91-14 This special report provides details concerning two fire barriers being breached for greater than the Lt2hnical specification allowable time period. The auxiliary building Fire Door A-62 has been breached to facilitate traffic during the Unit 1 Cycle 5 refueling outage. The

! biological shield blocks have been removed, and the Unit I reactor building equipment natch has been opened to provide unimpeded access during the refueling outage. This report is being made in accordance with Technical Specification Action Statement 3.7.12. The enclosure contains the details concerning the condition.

If-you have any questions concerning this submittal, please telephone M. A. Cooper at'(615) 843-8422.

Sincerely, y 06 CW

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L. Wilsen Enclosure cc: See page 2 l

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2 U.S. Nuclear Regulatory Commission November 5, 1991 cc (Enclosure):

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

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. ENCLOSURE SEQUOYAll NUCLEAR -PLANT (SQN) UNIT 1 ,

SPECIAL REPORT 91-14 .

t Description of Condition On-October.4, 1991, with Unit 2 operating in Mode 1 (100 percent power, 2235 ponds per square inch gauge, and 578 degrees Fahrenheit), and Unit 1 being shut down for_a planned refueling outage, auxiliary building Double Fire DoorLA-62-was removed from service to facilitate outage activities associated with personnel traffic entering and exiting the Unit-1 penetration room on Elevation-690. The fire door will be nonfunctional for the duration of-the refueling outage.

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On' October"5, 1991, the Unit i biological shield blocks were removed and the Unit i reactor building equipment hatch was opened to provide access during the refueling outage.

Cause of tne Condition Auxiliary building Fire Door A-62 is a double door, and half of the door opening will be roped of f for a contamination zone (C-zone) corridor to allow-

-personnel access'ta the hot' tool room constructed outside the penetration room.- The location of the hot tool room is normally outside the C-zone. .This-C-zone corridor will eliminate time lost to exit the C-zone areas to obtain tools and will eliminate the additional radiological waste associated with the C-zone exits.

The shield blocks were removed to permit-the Unit 1 Cycle 5 refueling activities.

Corrective Action A breach permit was issued in response to the work request to remove double p Fire Door _-A-62 from service. The fire detectors inside the Unit 1 penetration-L room were verified operable. .A roving fire watch was established and will be l maintained until the door is returned to operable status and the-breach is removed-at the end of the cutage.

~A breach permit was issued in respcuse to the work request to remove the shield blocks. Fire detector operability in the auxiliary building Room.A-11

-was verified, and a roving fire watch was established. The fire watch will be mait.tained until the shield blocks are reinstalled and the breach is removed at_the end of the outage, l PLO90204/lS0-

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