ML20094K330

Special Rept 92-01:on 920206,nonfunctional Fire Barrier for Period Greater than TS Allowable Time Period Noted. Caused by Irreparable Damage to Door & Unavailability of Replacement Door.Fire Watch Established

ML20094K330
Person / Time
Site:	Sequoyah
Issue date:	03/13/1992
From:	Joshua Wilson TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
92-01, 92-1, NUDOCS 9203200219
Download: ML20094K330 (4)

Text

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En weevm Afonny R;,! 0% dWM eMW, 4 t i +

J L W N;n We N ,hy L T equ y nL %e ha hva March 13, 1992 U.S. Nuclear Regulatory Commission ATTN Document Control Desk Washington, D.C. 20$55 Gentlemen:

In the Matter of ) Docket Nos. 50-327 Tennessee Valley Authority ) 50-328.

SEQUOYAH NUCLEAR PIANT (SQN) - UNITS 1 AND 2 - FACILITY OPERATING LICENSE-DPR SPECIAL REPOPT 92-01 The enclosed special report provides details concerning a fire barrier being nonfunctional for a period greater than the technical specification (TS) allowable time period. The auxiliary building Fire Door A-111 is damaged and was determined to be beyond repair and must be replaced with a new door. This report is being made in accordance with

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TS Action Statement 3.7.12. The enclosure contains the details

j. concerning the condition.

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

Sincerely, S

f)

J L. Wilson

' Enclosure cc: See page 2 j ._

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I 9203200219 920313 ,

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-U.S. Nuclear Regulatory Commission Page 2 March-13, 1992 cc (Enclosure) -

Mr. D. 5. 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'11-101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 c- w j

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t 2-This event was discussed with the Radiological Control personnel responsible for transporting C-rone laundry and radioactive waste through the door, and.

the personnel were cautioned about damaging the door. -The lifting lugs were removed from the carts to increase the clearance between the cart sides and door facings. In addition, the possibility of obtaining smaller carts is

- being explored.

CommLLmenL A new door was ordered and is expected to be delivered and installed by October 1, 1992.

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. Enclosure

• SEQUOYAH NUCLEAR PLANT SPECIAL REPORT 92-01 i

Deantiplicitof_Candition On February 6, 1992, with Units 1 and 2 operating in Mode 1, it was determined that auxiliary building Door A-111 was nonfunctional and could not adequately perform its intended design function as a fire barrier because of physical damage to the door. A work request (WR) was initiated and a breach permit -as -

posted. Limiting Condition for Operation (LCO) 3.7.12 was entered at 1027 Eastern standard time. The operability of the fire detection system on one side of the fire barrier was verified and an hourly fire watch patrol was established, as required by LC0 3.7.12 Action Statement (a). The roving fire watch will remain in effect until the fire door is replaced and the door is returned-to service as a fire barrier.

Cause_of_ Event Fire Door A-111 is a 60-inch-wide, steel double door connecting the radioactive waste packaging area and Elevation 706 of the auxiliary building railroad bay. The door is a fire door and automatically closes and latches.

Often the doors are momentarily held open to permit carts to enter and exit the radioactive vaste packaging area. At other times, the doors are simply unlatched and the carts are used to push the doors open. The carts that are used to transport radioactive waste to the packaging area through Door A-111 usually weigh 500 to 600 pounds minimam. The cause of the physical damage to the door is unknown; but, because of small' physical clearances it is surmised that carts have repeatedly collided with the door causing irreparable damage to the fire barrier capability of the door.

The cause of the fire door not being returned to functional status within the 7-day timeframe, as specified by technical specifications, was that the damaged door could not be repaired and a new door could not be readily obtained.

Analysis of_EYent This event is being reported in accordance with the requirements of Action Statement (a) of LCO 3.7.12. A roving fire watch was established to inspect the affected area on an hourly basis. The existing fire detection and.

suppression system for the affected area was determined to be. operable and would actuate in the event of a fire. -Therefore, there was no danger to plant personnel or equipment.

Correc11101 cLion A WR was initiated to repair or replace the door and a breach permit was posted. A roving fire watch was established and will remain in effect until the door is~ returned to operable status. The fire detection and suppression system for the affected area was verified operable. A new door was ordered and is expected to be delivered and installed by October 1, 1992.

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