ML19317G337
| ML19317G337 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 05/09/1977 |
| From: | Stewart W FLORIDA POWER CORP. |
| To: | |
| Shared Package | |
| ML19317G332 | List: |
| References | |
| NUDOCS 8002280941 | |
| Download: ML19317G337 (2) | |
Text
a N 6.a.w w a Lv a=8 4 es a L.s e e e i
CONTROL OLOC-l l
l l
l l
[pttAst PRINT ALL RCOUIRED INFORM AT;.,
e LEENSEE e
NAME LCENSE EVENT i
[
lL l Cl Rl Pl 3l.
LCENSE NUMDER l1l1l1l l0 l3 l TYPE TYPE l 0 l 0-l-l 0l 0l 0l 0l 0l-l 0l 0l l4l1 C /D 14 15 25 CU 30 31 32 CAftConY TYPE t
ooCKET NUMDER EVENT oAfg REPORT oATE h CON'T l - l - l l Ll l0l5l0l-l0l3l0l2l l0 l4 l1 l 5l 7l 7l l 0 l5 l0 l9 l7 l7 7 6 57 60 59 GU G1 G8 GD 74 75 EVENT DESCRIPTION o
l In Mode 1 operation performing SP-370, Containment Isolation Valves CAV-2 and MUV-258 7 09 t
@l failed to close contYary to Technical Specification 3.6.3.1.
Redundant valves were avail-7 89 a
@l able and operable.
First occurrence of this type.
CAV-2 will be restored operable on 7 09
@l next outage. MUV-258 restored operable 15 April 1977.
7 09
@l (LER-77-36) 7 o9 pn,,,,
t SYSTEM CAUSE COMPONENT COMPONEN T CODE CODE COMPONENT CoOE SUPPULH MANUFACTUACR VOLATON
@ l Sl Dl lE l lVlA}LlVlElXl l Al lR l3 l 4l 0l lNl 7 00 10 11 12 17 43 44 47 48 CAUSE DESCn:PTION 0
oo l MUV-258 inoperable due to dirty control contacts.
Contacts cleaned and valve restored 7 89
@l operable.
CAV-2 closure spring not strong enough to effect closure. Will restore 7 ao bl operable next scheduled outage.
FACILTTY METHoo oF
\\ /
STATUS
% POWER oTHER STATUS o4CoVERY DISCOVERY oESCRIPTON Q
lEl l__0 l 8 ) 6 l l
N/A l d l
N/A 70 9
10 12 13 44 45 46 el ACTMTY CodTENT hfLEASED of f lLE ASE l AMOUNT oF ACTMTY Q
lZl LOCATION oF RELEASE W
N/A l
l N/A 7 0 D
10 11 44 45 0;
P[nSONNEL EXPOSunES NUMDER TYPE oESCRIPflotJ
@ l0l0l0l Wl N/A 7 89 11 12 13 6.
PERSONNEL INJunlES
- iUMDE R DESCFhPTioN 10l0l0l l
N/A 1
j 7 0D 11 12 0;
OFFSITE CONSEQUENCES I
gg l N/A 7 UU U:
LOSS On DAMAGE TO FACtllTY TYPE oESCA:PfloN
@Wl N/A l
7 89 10 la!.
PUBLtCITY 3l
~ N/A l
7 00 P.
SulTIONAL FACTOnS 8002 280 9W See attached Siipplewntary In fo rmat i on l,
7 00
~ i,[,
81 74 l,
7 nu
,r Naur:
% tu.t cuan
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,lo l
n,0Ne_ (.in) a66-4 nt
pi SUPPLEMENTARY INFORMATION
- g )
1.
Report No:
50-302/77-36 2.
Facility:
Crystal River Unit #3 3.
Report Date:
9 May 1977 1
4.
Occurrence Date:
15 April 1977 5.
Identification of occurrence:
Chemical Addition Valve CAV-2 and Make-Up Valve MUV-258 inoperable contrary to Technical Specification 3.6.3.1.
6.
Conditions Prior to Occurrence:
Normal Mode 1 operation.
7.
Description of Occurrence:
At 0600 while performing the quarterly cycling of power-operated con-tainment isolation valves, Surveillance Procedure SP-370, CAV-2 and MUV-258 failed to close from the Control Center.
Redundant isolation valves were available and operable. MUV-258 was restored operable within 4
[h hours. CAV-2 was manually isolated and will be repaired at the next g,,/
scheduled outage.
]
8.
Designation of Apparent Cause of Occurrence:
Corr.oded and dirty contacts for MUV-258.
Closure spring for CAV-2 not strong enough to close valve.
)
9.
Analysis of Occurrence:
There were no safety implications because of this occurrence as there were redundant valves available and operable.
10.
Corrective Action:
1 Contacts.ior MUV-258 were cleaned and valve restored operable. Preventive Maintenar :e Program should prevent recurrence.
Closure spring for CAV-2 will.be i inewed on next scheduled outage.
11.
Failure Data:
This was a non-repetitive occurrence.
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