05000272/LER-1978-075, Supplemental LER 78-075/03X-1:on 781130,while Containment Entry in Progress,Inner Door of Air Lock Elevation 130 Ft Would Not Fully Open.Caused by Failed Cam Roller on Inner Door Operating Mechanism.Cam Roller Replaced

Supplemental LER 78-075/03X-1:on 781130,while Containment Entry in Progress,Inner Door of Air Lock Elevation 130 Ft Would Not Fully Open.Caused by Failed Cam Roller on Inner Door Operating Mechanism.Cam Roller Replaced

ML18081A947
Person / Time
Site:	Salem
Issue date:	01/22/1980
From:	Kapple A Public Service Enterprise Group
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML18081A946	List: 05000272/LER-1978-075, Supplemental LER 78-075/03X-1:on 781130,while Containment Entry in Progress,Inner Door of Air Lock Elevation 130 Ft Would Not Fully Open.Caused by Failed Cam Roller on Inner Door Operating Mechanism.Cam Roller Replaced
References
LER-78-075-03X, LER-78-75-3X, NUDOCS 8001280357
Download: ML18081A947 (1)

LER-1978-075, Supplemental LER 78-075/03X-1:on 781130,while Containment Entry in Progress,Inner Door of Air Lock Elevation 130 Ft Would Not Fully Open.Caused by Failed Cam Roller on Inner Door Operating Mechanism.Cam Roller Replaced

Event date:
Report date:
2721978075R00 - NRC Website

text

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LICENSEE EVENT REPORT UPDATE REPORT - Previous Report Date** 18/78 CONTROL BLOCK: I I

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!PLEASE PRINT OR TYPE ALL REa8o INFORMATION!

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• LICENSEE CODE 14 IS LICENSE NUMBER 25 26 LICENSE TYPE

JO 57 CAT 58 CON'T [ffi]

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~~~~~~ L1J© I o I s I o I o I o I 2 I 1 I 2 101 1 I 11 3 10 I 1 I B I© I o 11 I 2 I 2 I a I o I G) 60 61 OOCKET NUMBER 68 69 EVENT CATE 74 75 REPORT CATE 80 EVENT DESCRIPTION ANO PROBABLE CONSEQUENCES@

[§JI) I Du.ring normal operations* while a containment entry*was in progress, the inner door of air lock elev. 130' would not fully open.

Maintenance Department was informed and the LCO for T/S 3.6.1.3.a was implemented which requires repair within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.J The air lock was repaired, tested and returned to service within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

This is the 13th occurrence of this type.

(LER's 77-58, 77-70, 77-73, 78-3, 78-27, 78-28,

!]JI] I 78-45, 78-56, 78-S8, 78-60, 78-66, 78-68)

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43 44 47 OJ)) I The cause of this occurrence was a failed cam roller on the inner door operating mechanism.

The cam roller was replaced and the door closing mechanism was adjusted for positive door seal.

During the refueling outage, the. inner and outer [JJ]J I door upper hinge shaft restraint bearing supports and worn internal door parts on I

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DISCOVERY

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