ML19319C687

AO-75-01:on 750119,reactor Containment Isolation Valve SFV-53610 Failed to Close During Surveillance Test.Caused by Water in Instrument Air Line to Valve Operator.Water Drained & Valve Stroked Six Times Successfully

ML19319C687
Person / Time
Site:	Rancho Seco
Issue date:	01/29/1975
From:	Colombo R SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML19319C682	List: ML19319C681 ML19319C687
References
NUDOCS 8002210544
Download: ML19319C687 (1)

Text

..

LICENSEE EVENT REPCT CONTROL BLOCK:l l

l l

l l

l

[PLEASE PRINT ALL REQUIRED INFORMATION) 1 6

9 UCENSEE UCENSE EVENT NAME UCENSE NUMGER TYPE TYPE l Cl Al RlS lS l1l l 0 l 0l-l 0l0 l 0 l 0 l 0 l-l 0l 0l l 4 l1 l 1l 1l 1l l0l1l 7 89 14 15 25 26 30 31 32 CATEGORY p

S A DOCKET NUMBER EVENT CATE REPORT DATE O 1 CONT l M l Il lL l lLl l 0l 5l 0l-l 0l3 l1 l 2 l l 0l ll 1l 9l 7l 5l l 0 l ll 2l 9l' 7l5 l 7 8 t7 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION MR l A normally open Reactor Containment Isolation Valve was being tested during a l,

7 89 ggi

@ l surveillance test. The valve failed to close.

Instrument air pressure to the valve ]~

7 89 80

@ l operator was observed to be low.

The redundant isolat.on valve f.notor operated )

l 7 89 60.-

SE l was tested-closed. This was not a repetitive occurrence..A0-75-1.

l-7 89 80 0

l 1

7 89 pnME 80, O$E CC COMPONENT CCCE AC A

EAATCN BE lP I A l d l A lI l R ! DI Rl Yl lL l lPj0l5l0l W

j 7 89 10 11 12

.17 '

43 44 47 48,

CAUSE DESCRlPTION*

o e l Water was found in the instru=ent air line to the valve operator. The water was

[.

7-89 80 Q l drained and the valve was stroke tested six t'imes successfully. The Plant Review l

7N89 60 a(

1l Committee. ordered improvements to the instrument air dryint; system and' period,1c_>

j. _

\\

89 g @s to drain air lines.

W og7,co e, STATUS

% POWER OTHER STATUS D:SCOVERY DSCOVEAY CESCRIPTCN l Bl l0l 7l 5l l NA l

(_B_)

{

NA l-1 7 8 9

10 12 13 44 45 46 80 ACTMTV CONTENT i

RELEASEO CF RELEASE AMOUNT OF ACTMTV LoCATON CF RELEASE' 1

l Zl

[_Z_] ! NA l

[, NA

.l 7 8 9

10 11 44 45 80 PERSONNEL EXPOSURES N JMBER TYPE DESCRIPTON 1

l0l0l0l Wl NA l.

7 80 11 12 13 80<

PERSONNEL INJUAIES NUMBER CESCRIPTON DE l ol ol ol l NA l

7 89 11 12 eg OFFSTTE CONSEQUENCES

@l NA

[

7 89 80 1-LOSS OR CAMAGE TO FAC'LITY TYPE DESCRipTON M Ql NA l'l 7 89 10 80 PUBUC!TY d

@l Sacramento Union and Sacramento Bee notified on January 20, 1975 j;)

~ 2 89 80 ADO!TIONAL FACTORS I

f~ l 7 89 80 80022108

/

.El l-,

7 89 80 NAME. Ronald U.i Colombo' (916) 452-3211 PHONE:

GPO 409 887

.