ML19263C748

LER 78-019/03X-1 on 780803:while Operating 13U Diesel for Surveillance,Leaking Injector Pump Noted.Diesel Declared Inoperable.Caused by Crack in Valve Cage of Injector Pump

ML19263C748
Person / Time
Site:	Millstone
Issue date:	02/23/1979
From:	NORTHEAST UTILITIES
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19263C747	List: ML19263C745 ML19263C748
References
LER-78-019-03X, LER-78-19-3X, NUDOCS 7903010267
Download: ML19263C748 (1)

Text

- .U. s. NUCLE AR REGUL ATOFlY COMMISSION rJitC rOHM 3SG

(/ ??) '-e g -

- - LICENSEE EVENT REPORT (PLEASE PRINT On TYPE A LL REQUinED INFORMATION)

CONT Rol. DLOCK: l 1

l l l l l 6

lh o i lClTlMlNIS]2j@l010l-l01010l0 l lo lolo l@l4l1l1l1l1l@l 14 15 LICENSE NU?.'UE54 25 20 LICENSE TYPE JO l

57 CAT Sa l@

7 6 9 LICENSEE CODE CON'T lol l  ;'g'c l L l@l 0 l 5 l 0 l 0 l 0 l 3 l 3 I663l@l090 l8 EVENT it 10 13 DATE 17 1874l@l75 012REPOHT l 2 lDATE 3l7l9 80 l@

7 8 GO G1 DOCKET NUYBER EVENT DESCRIPTION AND rROBACLE CONSEQUENCES h o 2 l While operating the 13U diesel for surveillance, a leaking injector pump was I observed. In accordance with Technical Specification, Section 3.8.1.1, action I g o g ., , ;

o .I  ;

statement (a), the 130 diesel was declared inoperable and the operability of the i remaining A. C. sources was verified. The diesel is a Fairbanks Morse Model g

g; 38TD8-1/8, and is rated at 2,750 kilowatts. The failed part is an injector [

g rl l pump valve cage, part number 116103127. . A second failure of a valve cage occurred I g, . j ; on 1/25/79. Bu l

CODE - SUDC E COMPONENT CODE SUCC dE SU E DE lol9l8 l E l E l @ y@ l B l @ l E j fl l G l 1 l N I E l@ [ ZJ @ [Z20_l @ 19 19 9 10 11 12 13 7 REFO'4T REVISION SE QUE NTI AL OCCURRENCE CODE TYPE NO.

EVENT YE AR REPORTB.O.

@ g'RO EER n; [7 l8 l 9 l 0l1 9l26 y 27 l0 [3 l 28 29

[_X j 30

[.--J 31 l1 [

32

_ 21 22 23 24 FO f 8. S ^ LIE mar FA TURER A Ef O O J PLAT T T HOURS 22 55 #1 (

l Z jg 0 l0 l0 p' l lY lg l2Y lg [3A Jg lF 0 l1 l0 l 2 i

33 l@L34 @ 35 l36Z lg 3l1 40 41 4 4 44 47

'CAUSE DESCRIPTION AND CORRECTIVE ACTIONS A crack was found in the valve cage in both instances and the cages were replaced. I o l In both cases the 13U diesel was restarted and its operabil .ty verified. It had 1 g ,j l been out of service about 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> and 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> respectively. Following the second l failure all' the cages on the 13U diesel were checked and no c'.:.er cracks were  !

found. An update report will be sent pending a failure analysis by the vendor. l

,,g,, 80 7 8 9 D?S nY DISCOVERY DESCRIPTION ST S  % POWER OT% Ft .' TAT US Surveillance Test I li Is l LEj@ l 11 01 Ol@L NA l [B_j@l A TiviTY CO TENT LOCATION OF RELE ASE RELE ASED OF RFLE ASE AMOUNT OF ACTIVITY I

Im Lzj 8 9

@ [.z_j@ to I NA 44 l l 45 NA 60 7

Pf3tSONNt t E XPUSU5tES NU'/tif H TYPE DESCRIPTION l

EE]

10l o l 01@l z l@l N

Pi nzN,J' im u,,5 Nu,m n DESCniPTiO~@ I NA i -

II 9 10 10 10 l@l12 11 80 7

LOSS OF On DAMACE TO FACILITV TYPt

[i.j<,} U @ l OL'COIPflON NA 7903 o10M 7 60 1

7 h 9 10 PunticiTY NRC USE ONLY t'.*,U t n

[T[9 [N_j@DESCftlPilOrJ l NA I llllllll1IIIl 80-