ML19257B531
| ML19257B531 | |
| Person / Time | |
|---|---|
| Site: | Crane, Davis Besse  |
| Issue date: | 11/01/1977 |
| From: | Joseph Kelly BABCOCK & WILCOX CO. |
| To: | BABCOCK & WILCOX CO. |
| References | |
| TASK-TF, TASK-TMR NUDOCS 8001160765 | |
| Download: ML19257B531 (1) | |
Text
W Y ' D[ ". f'". W Q.%
l.W:.
Distribution b=
J. J. Kelly, Plan: !=:egratie:
af/
C u.s...
/
File No.
Cenerie or Ref.
g3 Subj.
Date Cus c c Guidance On Eigh ?ressure Injec:ica Opera.ica i,m............................-.......
Nove:ber 1, 1977 DISTF,I3UTION KCLU/ NEr-c
- 3. A. Karrasch IJQV l, l h l /
D. W. I.a3elle E. W. Svarson
/
.N. S. Elliott
/ OAvis G59se R. J. T'-S D. f. Eall=an-
- 3. M. Dunn-g7 g > g ' y-g Two recent events at the Toledo site have poi = ed out giving cur cus:crers e ough guidance c that perhaps ve are the operation of the high pres-sure 1:j ee: ice sys:e=.
On Septe:ber 24, 1977, after depressuricing due to a stuck open elect ::atic relief valve, high pressure injectic catically initiated.
vas auto-
,to recover, eithout regard to primarf pressure ~he operator stopped EPI whe
.J.
~ &a8 As a result, the transie t ce:tinued on with*beiling in the RCS, etc.
In a similar cccurrence en W
- Ceteber 23,_1977, the4 cperator bypassed high pressure injection to prevent initiation, eve: though reaeter cec 12::-systen pressure vent belev the
~
actuatic: point.
Since there cre accidents which require the centinuous operation of the hi h iing to our cus:c crs en when they can safely shutpressure injection s g
I recc :end the fo11ceing guidelines be sent:the systen deva felicving an accident?
a) Do not bypass c othervise preve:: the actuation of high/lov pressure 1:jection under anv conditions except a nor=al, controlled plant shu:devn. _
b)
Once high/ lev pressure injection is initiated, do not stop it unless:
Taye is s:cb.e or decreasing and pressurizer level is increasing and prir.ary presture is at least 1600 ? SIC and increasing.
I vould appreciate your thoughts on this subject.
l919 232
~
~
0-
+CDIEO N Jax:51 u
u,y a,a a.s 7 x r -
m WE...
--- -- mwnMNIT N" i O