05000277/LER-1979-035-01, /01T-0 on 790706:insp Program,Performed in Response to IE Bulletin 79-02,revealed 18 shell-type Anchors Which Failed to Torque Properly.Caused by Incorrect Installation.Anchors Properly Replaced

/01T-0 on 790706:insp Program,Performed in Response to IE Bulletin 79-02,revealed 18 shell-type Anchors Which Failed to Torque Properly.Caused by Incorrect Installation.Anchors Properly Replaced

ML19242A386
Person / Time
Site:	Peach Bottom
Issue date:	07/20/1979
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19242A375	List: 05000277/LER-1979-035, Forwards LER 79-035/01T-0 05000277/LER-1979-035-01, /01T-0 on 790706:insp Program,Performed in Response to IE Bulletin 79-02,revealed 18 shell-type Anchors Which Failed to Torque Properly.Caused by Incorrect Installation.Anchors Properly Replaced
References
LER-79-035-01T, LER-79-35-1T, NUDOCS 7908010546
Download: ML19242A386 (3)

LER-1979-035, /01T-0 on 790706:insp Program,Performed in Response to IE Bulletin 79-02,revealed 18 shell-type Anchors Which Failed to Torque Properly.Caused by Incorrect Installation.Anchors Properly Replaced

Event date:
Report date:
2771979035R01 - NRC Website

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,' Unit, 2 LICENSEE EVENT REPORT ReporC No. 2-79-35/1T-0 CONTROL BLOCK: l l

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lh (PLEASE PRINT OR TYPE ALL REculRED INFORMATIONI i

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60 61 DOCKET NUMB ER 66 t>9 EVENT OATE 24 75 REPORT OATE 80 EVENT DESCRIPTION AND PRoBA8LE CONSEQUENCES h

,,_J 2_j l Insvection progran performed in response to IE Bulletin 79-02 identified i

y1 18 shell type anchors which failed to torque properly. These anchors are l

.; l I associated with the energency c,ooling water piping supports. The piping

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s 1 is only used in unusual events such as flood and loss of Conovir@ Pond.

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It is unlikely that riving integrity could be affected by these anchor l

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l test failures. Safety simificance is therefore mind =al.

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31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS gl Anchors were incorrectly installed in the grout beneath the support l

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plate $nstead of the structural concrete. All test failed anchors were I

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preparly replaced and successfully tested by 7/10/79 i

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M. J. Cooney