ML20011A637

LER 81-060/03L-0:between 810922-1013,emergency Feedwater to Loop 1 Helium Circulator Water Turbine Drives Was Isolated on Three Occasions.Caused by Leakage Between Seat Ring & Valve Body Pressure Control Valve

ML20011A637
Person / Time
Site:	Fort Saint Vrain
Issue date:	10/22/1981
From:	Fuller C PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20011A632	List: ML20011A631 ML20011A637
References
LER-81-060-03L, LER-81-60-3L, NUDOCS 8110290213
Download: ML20011A637 (1)

Text

NRC FORM 366 U.S. NUCLEAR REGULATCRY COMM!SSION (7 77) ,.

LICENSEE EVENT REPORT CONTf;OL BLOCK: l 1

l l l l l lh 6

(PLEASE PRINT C TYPE ALL REIUIRED INFORMATION) lo l t8 l9 I cl LICENSEE 01 ri sCODE l vi il@l 0101 1010101010 14 15 LICENSE NUMBER l_1010 25l@l 2641111 l 210 l@l5 7 CAI T 58l@

LICENSE TYPE JO 7

CON'T lOl'l 7 8 3$n"CE 60 I L hl 015 61 l 0 l 0 l 0 l 268l 669l 7 @l DOCKET NUV8ER EVENT0 DATEl 9 l 2 l 2 l 8 lREPORT 74 75 1 hlDATE110 l 802 l 2 l 8 l 1 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 10121 l Durin2 s teadv s tate oow er ooeration. emercencv fon c .7n en r en in nn 1 holium ci rcn1 nen e 1 8 l

10131 I water turbine drives was isolated on th ree sennraro ocenaiona h o r.rn on unennhor M

[ol4l j .1981, and October 13, 1981, to repair a leaking pressure control valve. De erade d I l o l s i I mode of LCO 4. 2. 2 (a) . Reportable per Fort St. Vrain Technical Specification I No accot:panving occurrence. No effect on public health or safety. 1 io is l lAC 7.5.2(b)2.

[ 0 l 7 l i Similar reports R0 80-15, 80-23, 80-58,81-019, 81-046, and 81-057. I I

101811 7 8 9 E CODE SUSC E COMPONENT CODE SUSCODE SU E 10191 ln l H j @ l E lh l B lh l V l A l L l V l E l X lh lF l@ [Hj @ 18 19 20 7 8 9 10 11 12 13 SEQUENTI AL OCCURRENCE REPORT REVISION EVENT YE A R REPORT NO. CODE TYPE NO.

LE R -RO O aE suy l R l1 l l-l l01610l [d l 01 3l l Ll l-l [0_j

,,_ 21 22 23 24 26 27 28 29 30 31 32 K N AC 0 ON PL NT ME HOURS 38 i FOR 8. SLPPLIE MANUFAC RER L8J@l 33 34 o :@ LzJ@

JS Izl@

36 lolololol 3/ 40 lY l@

41 LN_j@

42 l43N l@ l44M l 1 l 2 l 047 l@

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS l t 10 l l Leakane between the seat rine and valve body of p ress ure control valve required iso- l lilil l 1ation for repair. Even t #1 - Devcon comoourtd anolied to ensket su-fnca nron en I

^

Event #2 . The valve stroke was lenethened. Event #3 - The valve ,

l i 121 i eliminate le akace.

m l disc and seat ring were replaced. The valve is a 6", carbon steel, air dianhraem  !

Ii14i l operated globe valvh rated at 2,500 pelg, rnanu?3c_tured by Masoneilan Intern ation al. I 7 8 9 in C. 80

• DISCOVERY DESCRIPTION

'S'T2NIS  % POWER OTHER STATUS DIS RY I1 l5 I (_()h l 0 l 7 l 0 lhl N/A l lAl@l Operator Observation l

• e2TiviTY CO'N TE NT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE 7

1 6 8 9 d@ 10 hl N/A11 44 I l N/A 45 l

80 PERSONNEL EXPOSURES NUMBER N/ADESCRIPTION l Ii l 7 l l 0l 0l OlhlTYPEZ lhl PERSONNE L INJU IES NUMBER DESCRIPTION N/A / l 7

1 a 8 9 10l 0l Ol@l12 11 80 LOSS OF OR DAMAGE TO FACILi tY TYPE DESCRIPTION j

lil91(_2]@l 7 8 9 10 N/A 80 ISSUED DESCRIPTinM i  : i iiiiiiiiiilg L2.' et to290213 st io22 ,, ,, ,o ;

7 PDR ADOCK 03000267 6 .....r er on- c., /f I /[ f /[1 mn, (303) 785-2224 2