ML19338C439

LER 80-025/03L-0:on 800712,during Inservice Operability Testing,Turbine Driven Auxiliary Feed Pump Tripped Below Normal Trip Setpoint.Caused by Normal Wear of Emergency Tappet Nut.Nut Adjusted to Improve Contact W/Trip Lever

ML19338C439
Person / Time
Site:	Millstone
Issue date:	08/07/1980
From:	NORTHEAST NUCLEAR ENERGY CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19338C436	List: ML19338C435 ML19338C439
References
LER-80-025-03L, LER-80-25-3L, NUDOCS 8008150410
Download: ML19338C439 (1)

Text

, , , ., , _ . <~ .-<m v..< .

I Ih

< o. LICEf4SEE EVEf4T REPORT h t

c( ?ot etocr.: L1J_1_J I l l@

6 ietE^st enisi on 1 vee 4t t ncou ntO *ur One.saiioni l.

._ . ~ . - 0_j 0_ ,0_J j. _jo_j_0j_0_1@L4_J IJ lJ 1_] 1 JOI_ J.J @ l 8 O LICENSL E CODL 14 lb_. . t lCE '.0E NOVb E R  ?$ 26 LICt f.5L T YPE JD 57 CA1 E8

• I, i

TT '

8 't%C! I LJ@l otslo Lo_l o_l 3 J1J 6J@Lo_L7 LLL2 L810J@lo_lBJo.j7 s

74 75 8tLFOHY DATE b b_J@ 80

• B 00 61 DOCKETt;VYeER 4 45 63 EVENT DAT E I

L VEtJ T Dlf,CnlPilON AND rnOD AOLE CONSLOUE'JCES h JB [ During inservice operabili_ty testing, the turbine driven auxiliary feed pump tripped 1 "

t

[g l 670 rpm below the normal trip setpoint preveriting completion of surveillance require- l JB 1 mentsjer Technical Specification 4.7.1.2.b.2. The electric driven feed __p_umpLwere I ,

[B 1 verified, operable and the plant was operated in accordance with Action Statement i j The turbine driven auxiliary _feedlump__was returned to service within two 1 I

[c] ( _4. 7.1. 2.

l C 1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. '.

1 ID 1 80 .

C DE CODE SLtCC E CO*.' pot;E NT CODE SLBC dE 5 DE

@O l C l 11]@ L_Ej@ W @ [ T l U l R I B 11 j fl l@ [ Z_J@ 20 [.Zj @

9 10 11 12 13 18 19 SE QUE NTI AL OCCUR Af feCE I<EFORT REVISION .

EVENTYELR HLPOHT f40. CODE TYPE NO.

@ ,'lLE g.n,',Ft HO lajoj

__ 21 22 l-1 23 Io12isI 24 26 t27 _] to 28 1329i Ltj 30 1-J 31 toj 32 ON LANT *t 1 b HOURS Sui

• iT T f '

LB. 5 PLil P.' A IA TL F ER AKird A flo" IJJ@lld@ L7J@ LzJ@ loIoIoIo1 LrtJ@ LuJ@ Laj@ ITI11417!@

44 47 33 34 35 36 37 40 41 42 43 CAUSE OtSCnlPTION AND CONNECTIVE ACTIONS N I

. E l_liotmal_ wear _nf_the emer9cacyv__La_pnel_Dut (part no d 5_on Terry Turbine Drawinn A-9319) g l reduced holding force on the Yip lever such that normal machine vibration caused turbinEi

?

l E l trip. The nut was adjusted to improve contact with the trip lever and the unit was l I

E l satisfactorily retested in accordance with Technical Specification 4.7.1.2.b.2. j I

ml8 9 LTA S  % POWE R OT H E R STATUS bl5CO IY OISCOVERY DESCRIPTION ,

j _;

E [Ej@ ll 'l 0 l0 l@l"

flA l l Bl@lItiSERVICEOPERABILITYTESTIrlG

\EriviTY CCOiE NT LOC ATION OF RE LE ASE HI < E ASED OF nELE ASE AYOUNT OF ACTIVITY f1A l i ftA l l

@G [ZJ 9

@ L.7J81 to 11 44 45 B0 PE H50N'.E L E

• POSUR ES

-l i

NUYttf R TYPE D E SCRIPTION 39 ri^ l E *1 *ol of oJ@LZJ@l ' "

!l

,E nsOm't ~uLS NU, e. o mC,oP

.@ tiA I i E OI 901 ol ol@l 11 12 00 l

E OSS OF OH DA*J AGE TO F ACILITY TYPE DE SC 6tiP T ION ti^ l E 121@l  :

unc usE ONov .

1%UI D PUBLI TV ,,

8 0080150///O f-E LiiJ@ DESCRIPTION l fi^ l 08 09 IIIIIIIIIIIIli 80" . ,'

qnq **7 17 ql .,y [ 7]  ?