ML20084B117

Telecopy Ro:On 730419,both Doors of 80-ft Elevation Personnel Air Lock to Containment Bldg Inadvertently Opened at Same Time.Caused by Interlock Malfunction.Investigation Ensuing

ML20084B117
Person / Time
Site:	Indian Point
Issue date:	04/20/1973
From:	Caldwell W CONSOLIDATED EDISON CO. OF NEW YORK, INC.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
NUDOCS 8304060130
Download: ML20084B117 (4)

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PJMU ANT TO THE REQUIT5:iEtris OF SECTION 6.6, PAR AGRAPH 6.6.1 (I) CF THE TECHNIC /,L SPECIFICATION 3 FOR FACILITY OPERATING Li CIN E NO. DPa-N5 PLFASE DE ADVISED THAT ON APRIL 19, 1973 AT Af'i liOXIt' ATELY 10:00 A.li. AMD AGAIN AT APPROXII ATELY 3:l?$ Pli DOTH DUORS CF THE FiO' ELEVATION PERS0fjNEL AIR LOCK TO THE CONTAliS.ENT LUILDIt:0 UERE INADVERTENTLY OPENED AT THE sat:E TItiE t r.im vs.m 4..

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FCR /MUT 100 UTf;UTES ILUE TO A l'Al. FUNCTION OF THE MECHANICAL INTE!: LOOP D"V..:E S. AT 1HE llPE CF t.0TH OCCURRENCES THE REACTOR WAS SHUTDWIJ 1:liH ALL CCNTh0L RCD ^. FULLY INBERTED. THE REACTOR CCOL'J:r SYSTEP PRESSURE AND TEl'PERATURE UERE I450 PSIG AND 22SF RESPECTIVEl Y AND THE REAC10R COOLMIT BORIC ACID CONCEfJTRATION UAS 2?h 0 PPit DOR OrJ. WITH THIS CONCENTRATION OF BORON AND ALL CONTFOL R ROUS FULt Y INSERTED THE REACTOR VAS SUB-CalT] Cal BY AT LEAS 7 12 PER CENT M/K.

UE ARE UURRENTL Y TfWESTIGATING THE CAUSE OF THE INTEliLOCK Mall UCTION AND VILt /.DVISE YOU AT A LATER DATE OF OUR FINDTt C3 AND CORRECTIVE ACTION TAKEN.

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/,NiHONY F AS ANO 0F YCUR OFFICE UAS INFORMED ON AFRIL 19 15'/5 BY TELEPHONE Or r.00VE OCCURRENCES.

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