ML19322C392

Discusses H Dopchie Inquiries Re ECCS Protection Against Break of Vapor Line on Pressurizer.Task Force Should Reach Interim Solution on Revised Signal Arrangements,Pending Final Determination

ML19322C392
Person / Time
Site:	Crane
Issue date:	11/08/1971
From:	Beck C US ATOMIC ENERGY COMMISSION (AEC)
To:	US ATOMIC ENERGY COMMISSION (AEC)
References
TASK-TF, TASK-TMR NUDOCS 8001160928
Download: ML19322C392 (1)

Text

-

I O

L 197l

[l

\\

b i

'insk Force ihbers H. IO?C:iE (iFLGI8) liiQUIPX ON FCCS PPDEXh' ION AGAIJUP BIEAK OF VAPOR LLE 0;I PiESSURIEt In letter <'ated /(ril 27 rcri June 25, 1971, Mr. H. Dopchie_(Cafety Expert, I'elcita). qucatiated the adeqtucy of sit 71als which would be generated to

initiate ercreency core coolirc in the event of a bruak in the vaporizer porticn of the plessurizar in P.i2 reactcrs. Our reply of Septerber 13th

did not satisfactorily _ resolve tirse questicas.

i Durind the Ceva Conference, Dr. Forris arrl I held a brief conversation with Dopchie or d received a :rore definitive description of his concerns, end I reached the conclusica that,he br*eed ikId raised a safety issue!

1. .11ch we had not fully realized. Ts s is further defJned in his letter.

Sof'Octob'ar 14th, which I mquested tint he ser41 with a full description of tin problem.

. In the mantim I undcratand that: Dick DeYoung has presented this problem to Uestinghouse.and that a suitable solution has not yet been resolved.

I believa the 'hsk Force should prastly review this situation and decide on a cuitable solution; it ray be advisanle to reach an interin solution i

on reviced signal arrengeants rending a final deterctinatial.

In the mantire,- Electrobic, the centractor consortiunt involved in design and construction of the Belci.um T1 hance PWR reactor, irs ItNuested tint we ncet with them on November 18 to discuss this problem. I have replied l

,in an anet.urinc telegra,. that 1.n would be happy to reet then durirg the Lweek of Movtrber 28th if they can arrance their visit at that time.

n Cliffoni K. Beck Deputy Director or' Ecculation Frclosures:

l.

Ltr fmm 11. Dopchie to

,,/

C. K. Beck dtd h/27/71

!). p'{

grgghypgh g [, V ~ ;

2.

Ltr fran H. Copchie to C. K. Beck dtd 6/25/71 g-3 Ltr fran C. K. Ecck to H. Copchie 6td 9/13/71

,. f.-

/.*,a *,

N DD&

Of flCE >

0Ck,:jjD

$ URN 4ME>

11/0/71 o_uE>-... = =. u u - -i t : m u-

=:

= : - --:

=- _

---..y-

_.. _....... =

3 At C-31s tRev. 9-53) ALCM 0240

c. s. mun.uuT r emem orric t : mo o - m-su 8001160pyg A

,