ML17252A869
| ML17252A869 | |
| Person / Time | |
|---|---|
| Site: | Indian Point  |
| Issue date: | 04/20/1973 |
| From: | Caldwell W Con Edison, Consolidated Edison Co of New York |
| To: | O'Reilly J US Atomic Energy Commission (AEC) |
| References | |
| Download: ML17252A869 (3) | |
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-. -NKA365(1050)(1c.010059A110)PD 04/20/73 1046 TLX CONEOMA!L NVK ZCZC 1 PO NEW YORK NY PMS JAMES P O'REILLY DIRECTOR DIRECTORATE OF REGULATORY OPERATIONS REGION 1 US ATOMIC ENERGY COMMISSION 970 BROAD STREET NEWAnt< NEW JERSEY 07102
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PURSUANT TO THE REQUIREMENTS OF S~CTION 6069 PARAGRAPH. 6Q6o1 (l) OF THE TECHNICAL SPECIFICA'f!ONS F'OR FACYLYTY OPERATING..
LICENSE NOo OPR-26 PLEASE BE ADVTSED THAT ON APRIL 19 9 1973 AT APPROXIMATELY 1O.g00 Ao Mc ANO-AGA!N AT APPROX!MATEl y 3 g45 PM.
BOTH DOORS OF THE BO' ELEVATION PERSONNEL AIR LOCK TO THE CONTAINMENT BUILDING WERE INADVERTENTLY OPENED AT THE SAME TIME SF-1201 (RS-69)
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FOR ABOUT TWQ MINUTES DUE TO A MALFUNCTION OF THE MECHANICAL INTERLOOK DEVICES. AT THE TIME OF BOTH OCCURRENCES THE REACTOR.
WAS SHUTDOWN WITH ALL CONTROL RODS FULLY INSERTED, THE REACTOR
- COOLANT SYSTEM PRESSURE AND TEMPERATURE WERE 450 PSIG ANO 225F RESPECTIVELY AND THE REACTOR COOLANT BORIC ACID CONCENTRATION WAS 2240 PPM BORONo
~ITH THIS CONCENTRATION OF BORON AND ALL CONTROL R RODS FULLY INSERTED THE REACTOR WAS SUB-CRITJCAL BY AT LEAST 12 PER CENT K/Ko v.'E ARE CURRENTLY INVESTIGATING THE' CAUSE OF THE* INTERLOCK MALFUCTION ANO WILL ADVISE YOU AT A LATER DATE OF OUR FINOINGSANO CORRECTIVE ACTION TAKENo MRa ANTHONY FASANO OF YOUR OFFICE WAS INFORMED ON APRIL 19 197; BY TELEPHONE OF TrlE ABOVE OCCURRENCESQ SF-1201 (RS-69)
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llH LLJ AM E CALOWELL JRo VICE PREST.DENT SF-1201 (R5-69)
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