05000316/LER-1983-058-03, /03L-0:on 830628,personnel Discovered 31-day Visual Verification of Blind Flange Over Fuel Transfer Tube CPN-1 Deleted.Caused by Mistake in 750407 Rev.Flange Visually Verified & Change Sheet Written

/03L-0:on 830628,personnel Discovered 31-day Visual Verification of Blind Flange Over Fuel Transfer Tube CPN-1 Deleted.Caused by Mistake in 750407 Rev.Flange Visually Verified & Change Sheet Written

ML20024D513
Person / Time
Site:	Cook
Issue date:	07/28/1983
From:	Stephens T INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20024D508	List: 05000316/LER-1983-058-03, /03L-0:on 830628,personnel Discovered 31-day Visual Verification of Blind Flange Over Fuel Transfer Tube CPN-1 Deleted.Caused by Mistake in 750407 Rev.Flange Visually Verified & Change Sheet Written 05000316/LER-1983-059-03, /03L-0:on 830629,during Surveillance Test of Ice Condenser Baskets,Min Average Ice Weight of Sample Baskets from Bays 6,7,8 & 9 & Row/Groups 8-1,8-2 & 9-1 Found Nonconservative.Probably Caused by Natural Sublimation ML20024D506
References
LER-83-058-03L-01, LER-83-58-3L-1, NUDOCS 8308050155
Download: ML20024D513 (2)

LER-1983-058, /03L-0:on 830628,personnel Discovered 31-day Visual Verification of Blind Flange Over Fuel Transfer Tube CPN-1 Deleted.Caused by Mistake in 750407 Rev.Flange Visually Verified & Change Sheet Written

Event date:
Report date:
3161983058R03 - NRC Website

text

PIRC (DRM J66 U. S. NUCLE AR REGULATORY COMMISSION (7 77).'

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60 63 DOCK ET NUMBER 68 69 EVENT DATE 74 7S REPORT DATE 80 EVENT OESCRIPTION AND PROBABLE CONSEQUENCES bio IO l2I IDURING REVIEW 0F THE CONTAINMENT PENETRATION SURVEILLANCE PROCEDURE IT WAS i o i 3, iDISCOVERED THAT THE 31 DAY VISUAL VERIFICATION OF THE BLIND FLANGE OVER THE FUEL l

io i4i ITRANSFER TUBE, CPN-1, HAD BEEN DELETED FROM ALL REVISIONS F0LLOWING THE ORIGINAL. I IO lsi lTHIS IS NON-CONSERVATIVE WITH RESPECT TO T.S. 4.6.1.la.

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SUPPLEMENT TO LER 83-058/03Lc0 27)

FURTHER INVESTIGATION REVEALED THE 31 DAY VISUAL VFRIFICATION OF CPN-1 HAD BEEN DELETED FROM A REVISION ISSUED 4/7/75. THE BLIND FLANGE USED FOR CONTAINMENT INTEGRITY AT CPN-1 HAS BEEN LEAK CHECKED AT THE CONCLUSION OF THE OUTAGES IN WHICH IT WAS USED DURING THE PERIOD THE VISUAL VERIFICATION WAS NOT DONE. THE REASON FOR REMOVING THE VISUAL VERIFICATION OF THE BLIND FLANGE COULD NOT BE DETERMINED. THE FLANGE IS LOCATED INSIDE CONTAINMENT AT THE BOTTOM OF THE FUEL TRANSFER CANAL.

THE FLANGE WAS VISUALLY VERIFIED IN PLACE ON THE SAME DAY THE OMISSION WAS DISCOVERED. VERIFICATION OF THE CPN IN UNIT 2 WAS NOT REQUIRED IN AS MUCH AS BLIND FLANGES INSIDE CONTAINMENT ARE EXEMPTED FROM THE 31 DAY VISUAL VERIFICATION BY THE UNIT 2 TECHNICAL SPECIFICATION.

THE VISUAL VERIFICATION FOR THE BLIND FLANGE, IN UNIT 1, HAS BEEN ADDED VIA A CHANGE SHEET TO THE CONTAINMENT PENETRATION SURVEILLANCE PROCEDURE WHICH WILL SATISFY THE 31 i

DAY VISUAL VERIFICIATION REQUIREMENT IN THE FUTURE.

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