05000336/LER-1980-022-03, /03L-0:on 800529,during Engineered Safeguards Actuation Sys test,1A Actuating Module Placed in Tripped Condition.Fans Did Not Shift to Low Speed.Cause Suspected to Be Sticking of Module Output Relay K515A

/03L-0:on 800529,during Engineered Safeguards Actuation Sys test,1A Actuating Module Placed in Tripped Condition.Fans Did Not Shift to Low Speed.Cause Suspected to Be Sticking of Module Output Relay K515A

ML19318D117
Person / Time
Site:	Millstone
Issue date:	06/27/1980
From:	Clement C NORTHEAST NUCLEAR ENERGY CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19318D112	List: 05000336/LER-1980-022, Forwards LER 80-022/03L-0 05000336/LER-1980-022-03, /03L-0:on 800529,during Engineered Safeguards Actuation Sys test,1A Actuating Module Placed in Tripped Condition.Fans Did Not Shift to Low Speed.Cause Suspected to Be Sticking of Module Output Relay K515A
References
LER-80-022-03L, LER-80-22-3L, NUDOCS 8007070372
Download: ML19318D117 (1)

LER-1980-022, /03L-0:on 800529,during Engineered Safeguards Actuation Sys test,1A Actuating Module Placed in Tripped Condition.Fans Did Not Shift to Low Speed.Cause Suspected to Be Sticking of Module Output Relay K515A

Event date:
Report date:
3361980022R03 - NRC Website

text

.

iNTBOL block: l l

l l

l l

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI

)) I_C l T lit Iri lS l 2j@l 0101 - 1 $ l0_l0 10 l 01 - 1010j@l. 4 l 1 l 1 11 ] U@L[j g a 9 LICENSE E CODE 14 15 LICENSE NUMUER 25 2G LICLNSE TYPE JO 57 CAT 58 B

% IN lI-j@l0 l 5 l0 l 0 j 0 l 313 16 ]@l 0 l 5 l 21918j0 l@l0l_6I217I830_.j@

iT C.8 69 EVENT DATE 74 75 HEPORT DATE 80 S

60 61 DOCKETt4UMar'1 EVEf4T DFSCRIPTioN AtJD PROBABLE COfJSEQUENCEs During an ESAS test, the 1A SIAS actuating module was placed in the l_

gl

~

~

~

trippe[ condition.

The CAR fans did not shi.ft to slow sneed.

]

gg Other equipment controlled by the same actuation module functioned I

gl properly. The plant was operated in accordance with Technical l

g, Speci fication 3.6.2.2 and 3.3.2.1.

l g;

'I

@l I

DD L 80 8 9 DE CODE SUt C E CO'APONENT CODE SUBCOdE SU O E

]B l Il Bj @ ( E_j@ l A l @ l_Rl E ll lAlYIXl@

[Bj @ (1J @

g b

10 11 12 13 18 19 20 REVISION SE QUE NTI AL OCCURRENCE REFORT

~ CODE TYPE N O.

EVENT YL.

HEPORT NO;

@,ay.o/RO[288 l0 ]

[ __-j l 0l 2 l 2 J y

10 l3 l lL l

[-j

{0j tt R g 22 23 24 26 27 28 29 30 38 32 TAKEt A T Or O Pt PT M T HOURS 22 S B IT F R ib B.

SUPPLiC MAN FA TURER L^J@L jg gg igg i 0] Oi 01 i

W@

L.fij@

l^l@

LC 15 l6 l0 Ig Z

33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Af ter several tests of the module the CAR fans did shif t to slow.

t py] l Suspected actuation module output relay K515A to be sticking.

Relay j

K515A was replaced as a precautionary measure.

K515A is supplied by i

Corisolidated' Controls Corporation (P/l1 KEtt 431 A) and manufactured by J

gl Couch.

j T41 1 80 SA

% POWF R OTHEn STATUS DISC V HY DISCOVEHY DESCRIPTION E [ Gj@ l 0l Ci Ol@l fiA l

[Cj@l Observation I

A!TiviTY LOCATION OF HELEASE @

AMOUNT OF ACTIVITY @ l CO rent itA l

tlA J

nEtrnstO Or netE AsE 3 (_Zj @ l Zlgl et nSONNEt e xPOsMtS j

] l 0 l bHERl 0 j@ Y @lDESCniPTION NUA liA l

r E nsObt t iN;u'n'iEs otSCniPriON@

J Nuusen g l0l0l0]@]

ffA

}

S 9 is 12

'D's '

tSC #1 ON' ' ' ' ' " @

J, T

TD t zJ@I ti^

S 9 10 NRC USE ONLY PUB L ICITY tlA l

l l l l l l l l l Ll_lj 2lol b @

68 6S 5U U 7 07 OJyd

$ 9 10 r wl Clement (203) 447-1791