ML20027A876
| ML20027A876 | |
| Person / Time | |
|---|---|
| Issue date: | 08/06/1982 |
| From: | Marchese A Office of Nuclear Reactor Regulation |
| To: | Berry D SANDIA NATIONAL LABORATORIES |
| Shared Package | |
| ML20027A678 | List:
|
| References | |
| FOIA-82-543, TASK-A-45, TASK-OR NUDOCS 8208250078 | |
| Download: ML20027A876 (2) | |
Text
OA',[.
< * ' ' ~
DISTRIBUTION (w/o enclosur Central Files A-45 DST c/f GIB Rdg Task File A-45 August 6, 1982 FSchroeder RSilver HRood KKniel RSavio Pilorian Dr.-Dennis L. Berry ARubin Project stanager for USI L-45 NAnderson Division 9414 Wi4 inners
!!uclear Facility Analysis AThadani Sandia flational Laboratory f4Ernst Albuquerque, New liexico 87135 RCapra TSpels
Dear Dr. Berry:
BSheron Triarsh
Subject:
Depressurization and Decay Heat Removal System fo1Rubenstein CE Plants Without PORVs OParr RPurple TNovak This letter is a follow-up to our telephone conversation of July 28, 1982, on the subject issue.
As I ndicated, far. Harold Denton, Director of URC's Office of fluclear. Reactor Regulation (NRR), requested that we examine what can be done as part of the A-45 program (FIH No. A-1309) to expedite our planned evaluation of the need for a rapid depressurization and decay heat removal system (such as, " feed and bleed") for CE plants without PORVs. This would mean re-scheduling the work on feed and bleed delineated under Task 4 " Conceptual Design Studies,"
qf,,' Jour Statenent of Uork transmitted in a letter, dated !!ay 3,19S2, from S. H. Hanauer to R. G. Romatowski. After the Combustion Engineering Owner's Group study of this subject issue is provided by June 30, 1933, URR will be required to nake a reconnendation to the Conmission in this matter.
In order for NRR to make a more infomed decision, we should provide an interim evaluation of this issue in the same time frane as the CE study.
It is ny feeling that your interin study in this matter should focus on providing a value-impact, or cost-benefit evaluation, of adding a rapid depressurization and decay heat removal system to specific CE plant without PORVs, such as San Onofre 2.
Both the engineering and operational aspects should be considered including proposing specific design' criteria, performance requirements and standards that the system should meet.
You should draw on your previous.uork for RES on " Assessment of Alternate LWR Shutdoun Heat Removal Concepts" (FIN fio. A-1226). Any significant themal-hydraulic phenomenological uncertainties that would make such a system a less viable option should be identified, including an estimate of the time and resources to resolve.the concern.
As per your request, I am enclosing bachground material on this subject, including the transcript of the July 28, 1982 Commission fieeting on a Full Power Operating License for San Onofre 2, which contains an extensive discussion of this_ issue.
hb VYO k,,h o m er>
su m ue>
....d......:.....
me >
ac ronu su cc-em nacu oaa OFFICIAL RECORD COPY www n s
t e a
. swa
,. h Dr. Dennis L. Sorry August 6, 1982 Within tuo weeks of receipt of this letter, please provide me with your planned approach for evaluating this issue.
Sincerely,
/s/
A. R. Marchese, Task Manager Generic Issues Branch Division of Safety Technology
Enclosures:
As stated cc: w/o enclosures H. Denton E. Case S. llanauer R. Mattson D. Eisenhut G. Varnado, Sandia th 4
D..S. I}g.I...........
..D S..T..:.G...I B /,.
D
/
G erne,yM@ accLs.c;.c(.t
......../.
..P.,J,fl82 qr,,a n,,,,,,,,,
,,K K n,i,e,),,,,,,,,,,,
sun - n
..B..l...............
..B..lk..(.8. 2..........
enn)... 61.41.S.2..........
nc renu sia 0o 8o3 nacu cao OFFiClAL RECORD COPY usam mi-sana