ML20009H506

RO 50-327/81085:on 810719,during Linkage Interlock Test on Lower Containment Personnel Access Lock,Inner Door Slammed & Bounced Back While Outer Door Was Opened.Caused by Excessive Slack in Door Operating Linkage

ML20009H506
Person / Time
Site:	Sequoyah
Issue date:	07/29/1981
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
RO-50-327-81085, NUDOCS 8108100193
Download: ML20009H506 (1)

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mow M E  ; ONAL DIRECTOR July 29, 1981 DEPUTY DIRECTOR ASSISTANT TO DIRECTOR DIRECTOR, RRPI U.S. Nuclear Regulatory Commission ~

DIRECTOR, EPOS Region II DIRECTOR, ENF/INV 101 Marietta street, w DIRECTOR, ETI Suite 3100 PUBUC AFFA'R" "'~1 .

Atlanta, Georgia 30303 SQRO-50-327/81085

-kog Reported under Technical Specification 3.6.1.3.a fj yf r Date of Occurrence: 7-19-81 Time of Occurrence: 0710CDT/ ,

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Technical Specification Involved: 6.9.1.12.e '

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• 9' O, M ygyrew h Conditions Prior to Occurrence.  % y Unlt 1 in Mode 3 with RCS temperature and pressure at 537'F and M Identification and Description of Occurrence _

During performance of a linkage interlock test on the lower containment l

personnel access lock, the inner door was allowed to slam and bounce back.

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'Ihe latch closed blocktng the door ajar. The outer door was then opened l violating containe.ent integrity for five seconds per Technical Specification l 3.6.1.3.a. 'Ihis event occurred on 7-19-81 and the required 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> phone call was made, but the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> written follow-up was inadvertently not prepared or sent by the Sequoyah Compliance Staff. This omission was discovered on 7-28-81 during preparation of the Licensee Event Report. The Compliance Staff has been reinstructed to perforet a more detailed review of Potential Reportable Occurrences when they are initiated.

~ Apparent Cause_of Occurrence St0 Excessive slack in the door operating linkage allowed the door to bounce back far enough to allow the latch to block it open.

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