ML20235D885

AO 1-72-4:on 720403,water Hammer Occurred That Rendered One Loop of Containment Spray Sys Inoperable & Damaged Several Pipe Hangers & Restraints.Reactor Will Remain in Shutdown Mode Until Repairs Made & Sys Tested

ML20235D885
Person / Time
Site:	Quad Cities, 05000000
Issue date:	04/05/1972
From:	Stephenson B COMMONWEALTH EDISON CO.
To:	Morris P US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20235B311	List: IA-87-111, Submits Rept on Plant,As Discussed in ACRS 150th Meeting on 721012-14.Listed Items Can Be Resolved During Const & Facility Can Be Constructed W/Reasonable Assurance for Operation W/O Undue Risk to Public Safety IR 05000254/1972009 IR 05000358/1972003 IR 05000358/1973001 IR 05000358/1973002 IR 05000358/1973003 IR 05000358/1973005 IR 05000358/1973006 IR 05000358/1973007 IR 05000358/1974001 IR 05000358/1974002 IR 05000358/1974003 IR 05000358/1975004 ML20235B308 ML20235B364 ML20235B401 ML20235B405 ML20235B424 ML20235B456 ML20235B461 ML20235B465 ML20235B477 ML20235B488 ML20235B507 ML20235B552 ML20235B582 ML20235B585 ML20235B588 ML20235B605 ML20235B618 ML20235B623 ML20235B649 ML20235B656 ML20235B662 ML20235B670 ML20235B679 ML20235B683 ML20235B687 ML20235B702 ML20235B708 ML20235B713 ML20235B714 ML20235B718 ML20235B720 ML20235B730 ML20235B734 ML20235B748 ML20235B754 ML20235B762 ML20235B764 ... further results
References
FOIA-87-111 1-72-4, NUDOCS 8709250394
Download: ML20235D885 (2)

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DIRECTOR DIVN'0F REACTOR LICENSING, 1,

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- REFERENCE QUAD-CITY NUCLEAR POWER STATION ' UNIT 'ONE.~ DPR-29

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'SECTION 1 0A4 - DURING SURVEILLANCE TESTING OF THE a.

RHR SYSTEM AT GUAD-CITIES NUCLEAR POWER STATION UNIT ONE ON

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4-3-72 A WATER. HAMMER OCCURED.TH AT RENDERED ONE LOOP OF' 0:

THE CONTAINMENT SPRAY SYSTEM INOPERABLE AND DAMAGED SEVERAL PIPE HANGERS AND RESTRAINTS..THE DAMAGE WAS DISCOVERED 4-4-72 AT 20 CPM. CURING THE PERIOD THE REACTOR WAS' IN-A SHUT DOWN MODE =' - [, ',

• AND WILL REMAIN SO UNTIL RPAIRSXXX REPAIRS ARE MADE' AND THE SYSTEM TESTED.,

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THIS ABNORMAL OCCURANCE.IS REPORTED AS INCIDENT NBR l-72-4 i;

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