ML19318D117

LER 80-022/03L-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

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: ML19318D111 ML19318D117
References
LER-80-022-03L, LER-80-22-3L, NUDOCS 8007070372
Download: ML19318D117 (1)

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 - 1LICENSE $ l0_l0 NUMUER 10 l 01 - 1010j@l. 25 2G 4 l 1TYPE LICLNSE l 1JO11 57] U@L[j CAT 58 g LICENSE E CODE 14 15 a 9 iT B  % IN lI-j@l0 l 5 l0 l 0 j 0 l 313 16 ]@l C.8 69 0 lEVENT 5 l DATE21918j074 l@l0l_6I217I830_.j@

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 -

~ ~

~

gg trippe[ condition. The CAR fans did not shi.ft to slow sneed. _

]

Other equipment controlled by the same actuation module functioned I gl g, properly. The plant was operated in accordance with Technical _

l g; Speci fication 3.6.2.2 and 3.3.2.1. l

'I

@l ,

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

]Bg l Il Bj @ ( E_j@ l A l @ l_Rl E ll lAlYIXl@ [Bj @ (1J 13 18 19 20 b 10 11 12 REVISION SE QUE NTI AL OCCURRENCE REFORT

_ ~ CODE TYPE N O.

EVENT YL. HEPORT NO; tt R

@ ,ay.o/RO g [ __-j l 0l 2 l 2 26J y 10 l3 l lL l [-j {0j 32

_. [28822l0 ] 23 24 27 28 29 30 38 F R ib B. SUPPLiC MAN FA TURER O Pt PT M T HOURS 22 S B IT TAKEt A T Or gg L.fij@ l^l@ LC 15 l6 l0 Ig L^J@L 33 34 Z

jg 35 igg 36 i 0] Oi 01 37 i

40 W@

41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS t

py] l Af ter several tests of the module the CAR fans did shif t to slow.

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

A!TiviTY CO rent nEtrnstO Or netE AsE LOCATION OF HELEASE @

3 (_Zj @ l' Zlgl AMOUNT OF" ACTIVITY itA l tlA @l "

J et nSONNEt e xPOsMtS NUA j

] l 0 l bHERl 0 j@ Y @lDESCniPTIONliA l r E nsObt t iN;u'n'iEs Nuusen otSCniPriON@ J g l0l0l0]@] ffA

} S 9 is 12

'D's '

T tSC #1 ON' ' ' ' ' " @

J, ti^

TDS t9 zJ@I 10 NRC USE ONLY PUB L ICITY tlA l l l l l l l l l l Ll_lj***

2lol $ 9 b@ 10 5U U 7 07 OJyd 68 6S r wl Clement _ (203) 447-1791 __