ML20083R696
| ML20083R696 | |
| Person / Time | |
|---|---|
| Site: | Indian Point  |
| Issue date: | 02/06/1974 |
| From: | Cobean W CONSOLIDATED EDISON CO. OF NEW YORK, INC. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20083R695 | List: |
| References | |
| AO-4-2-7, NUDOCS 8304040611 | |
| Download: ML20083R696 (2) | |
Text
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MJD. di k 4 frying Pim. New Yo+. N Y 10003 i i 5 I G Pebruary 1974 { Re Indian Point. Unit No. 2 l Pacility Operating Licente ]j. DPR-26 s' A.OT ir2-7 ~~j ~ t Mr. James P. O'Reilly, Director l Regulatory Operations, Region I ? j-Lt. S. Atomic Enorgy commincion I ' 631 Park Avenuo 'g ' King of Pruccia, Pennsylvania 19406 2 -{ s
Dear Mr. O' Roll)y,
t.- . ey On Pebruary 1, 1974 at appro:-:imately 3: 50 PM both doore of ,.a'. the r50 foot elevation porno.nno) sir lock to thr'. containment-buil6-ing were inadvertently opened at the same time for a periot3 of sh9ut thirty coconan, At the time of this occurrenccJ the reactor \\ i was shutdowrrwith all full length control rode fully inserted in. the core. Tne reactor coolant. system pressure and temperature -4 0 l were 223s peig and 540 F ro:spective)y, 800 the ec.'sCtor. Coolant bor- " i ic acid concentration was appro::imately 3 3 90 ppm boron. With thfa concentration of boron and all control rods fully inserted, the reactor was suberitical by more than 7 percent <1 k/p. l Invouti9atf or, into the cause of the occurrence-revealed the f following pertinent information: .t Whenever the plant is not in the cold shutdown condition and containment entry is to be made by other than operating per-connel, a man who has been. properly instructed on the opera. tion of the air 'lt.ck -doors and the requirements for' contain-I ment integrity is stationed.in the airlock.to operate itn j controle. In addition, _ SjgDD hrc PO3ted.at.-the. outside of j each door to inform plant personnel when system; conditions, are such that. containment integrity in required,- 2 ]. AL about 3:50 PM ontFebruary 1, 1974, an offsite'Compard e$ ' i ployee. in attempting Lto ent.er c;ontainmentJ from outside the, hir lock mistakenly op roted the wrong hand whoe) Mpaning' ' ~ ] p the inner air Joch door. Both the operator statiorldd inside ? 1 the-air. lock and the person outside reali."e}ruhat happeneQ +1 M 8304040611 740219 3,"4.,,,
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Upon closing, and both started to closes he inner door.frme and the door t tha inner door bounced off.its seatinr1 3atdh rotated into position With the inner door still i' When the individuni outside the a$ylock noted the t the inner door was closed, he open. erroneous indication th3 Before-the immediato)y ntarted cpening the outer door. movement, and ~ operator inside the airlock could st.op itsintegrity had been breeched .A reclose the door, containntent .t. for about thirt.y neconds, We arp continuing our,6 /avestigatiIon into thin matter and i 1 taken t.o vill advise you of our Lindingn And corrective actionMrV Ant ' 1 1974 by Mr. 7ohn Maho-prevent recurrence.tified of this occurrenec$dn Febyuary 2, peace. k 'vory truly yourn, \\ v, D aya.s,. p._, (y ..eavA+ ' g k+ - h,* W$frenR. Cobean, Jr. j 14anager, Nuc)cor Power ~ l 1 \\ ,. Generation N. n, -. 3 y 4 Mr. John P. O' Lea % ' ^ i cc: -\\ f r-u--- ) /: L } g x l t .g,A i s d _ y a l 1 ? ..~' n. t ,A 'S .v 4 y' a. 3 j s['A l *' ~. g%4 L c, _ y )
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