ML20150D384

/01T-0 on 781116:during Repair of Fire Hydrant Facing Condenser Retube bldg,shut-off Valve Blew Off Line Causing Local Flooding & Removal of Fire Suppression from Svc.Cause Was Improper Reinstallation at Retube Bldg Constr

ML20150D384
Person / Time
Site:	Pilgrim
Issue date:	11/29/1978
From:	Mathis C BOSTON EDISON CO.
To:
Shared Package
ML20150D379	List: ML20150D376 ML20150D384
References
LER-78-053-01T, LER-78-53-1T, NUDOCS 7812050192
Download: ML20150D384 (1)

Text

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LVLNi DATE 14 75 HLPORT DAIL 80 EVENT DESCRIPTIOf1 AND PROB ACLE CONSEQUENCES h , l{[

y l On November 16, 1978, during repair of fire hydrant located in f ront of the condenser l O

jf g [ retube building, the chut-off valve for the hydrant blew off the line causing flooding l g [ of the limriediate area. This section of the ring header could not be successfully l

{fh g [ isolated to allow repairs to continue. In order to stop the flow of water in this

} g g sector, the fire suppression system was removed from service for approximately five g

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CAUSE DESCRIPTION AND CORHECTIVE ACTIONS g l The cause for the shutof f valve blowing off the lide was improper re-installation duringl g l const'ruction of retube building. Future repairs and/or modifications to fire protection l g [ components will be reviewed by PNPS Fire Prevention and Protection Officer to ensute l

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N AMI Of CREPAHf H Charles J. Mathin 617-746-7900 o

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