ML19345D778
| ML19345D778 | |
| Person / Time | |
|---|---|
| Issue date: | 02/13/1980 |
| From: | Catton I Advisory Committee on Reactor Safeguards |
| To: | Muller R Advisory Committee on Reactor Safeguards |
| Shared Package | |
| ML19345D770 | List: |
| References | |
| ACRS-M-0022, ACRS-M-22, NUDOCS 8012160616 | |
| Download: ML19345D778 (1) | |
Text
~
O O
O FROM:
I Cattan
SUBJECT:
Some consnents -
1.
Steam generator models are very simplistic and p'robably could easily be improved.
inadequate when inlet is above the water level.In particular the hand 2.
large node does not allow one to get a good picture o going on.
hot leg will be distributed over a very large volume.Any void f An igrove-ment here would be easy to accomplish.
3.
Operating a transient code without the RCP trip points built in to obtain results to prove a point seems to be a waste of time.
Voiding of the candy cane with RCP trip may lead to different conclusions.
Until a method of interpretation is available to the operator, he will not knew whether he has a small break or an overcooling.
trip be overridden and based on what inputs?When the RCP trip i 8
A number of simple methods come to mind.
- 1) Heat Removal By S.G. compared to power.
- 2) Time rate of change of cold leg teg.
l O
l o
t i
s 012 iso G/6 r
.....