ML20010G337

LER 81-051/03L-0:on 810721,Class I Snubbers Removed from Svc for Structural Mods W/Plant Operating at Power.Caused by Seismic Restraint Analysis Program.Snubbers Returned to Svc Following Mods

ML20010G337
Person / Time
Site:	Fort Saint Vrain
Issue date:	08/20/1981
From:	Mcbride M PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20010G327	List: ML20010G326 ML20010G337
References
LER-81-051-03L, LER-81-51-3L, NUDOCS 8109150598
Download: ML20010G337 (1)

Text

_ . . .

NRO FORM 366

• U. S. NU': LEAR REGULATCRY CGMMISSION (7 77) .

LICENSEE EVENT REPORT CONTROL BLOCK: l l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) i e lo lil8 Ic 7 9 10LICENSEE I r ISCODE Iv 11 l@lo lo I- lo lo 14 15 lo lo lo I- lo lo l@l4 11 LICENSE LICENSE NUMBER 25 26 11 12TYPE loJ0l@l57 CAT l 58 l@

CON'T lolil 7 8

<$RCE 60 lL @ lo 15 61

!o l0 10 12 l6 DOCKET NUMBER tid l769 hlo1712 EVENT DATEIl 18 li @l ol REPORT 74 75 8l 2lDATEol 8l 1]@ 80 EVENT OESCRIPTION AND PROBA8LE CONSEQUENCES h I o l 21 l on four separate occasions . Class I snubbers w. re removed f rom service for structural I lo tal i modifications with the plant operating at power. This is a degraded mode of l l o 14 l l LCO 4. 3.10 and is reportable per Fort S t. Vrain Technical Specification AC 7.5.2(b)2. l jol3l l No accompanying occurrence. No effect on public health or safety. Similar report l l

lo is l l RO 81-o26.

i l0}7ll l

10181l 20 7 8 9 SYSTEM CAUSE CAUSE COMP. VALNE CODE CODE SUSCODE CO**PONM.T CODE SUSCODE SU8 CODE foTTl i A l D lh [X_jh I Zlh l S l qjll o l R l T lh l B lh d h 13 18 19 20 7 8 9 10 11 12 SEOUENTI A.L OCCURRENCE REPORT REVISION EVENT YE AR R EPORT NO. CODE TYPE N O.

LER RO O aeg s I 81 il

_ 21 22 1-1 23 I of si il 24 26 kj 27 lH o !WM M I

30 l-l 31 Lo_]

32 AK N AC O ONP NT ME 64 CUR S SSAITh FORf 8. SUPPLIE MAN FAC RER I33Xl@l2 J4 l@ l36 Zl@ d h 36 Iofololol 3/ 40 l41 Yl@ [NJ@

42 l43A l@ l44X l 9 l 9 l 947 l@

CAUSE OESCRIPTION ANO CORRECTIVE ACTIONS h lilo l l Snubbers were taken out of service for structural modifications r~uired by the l It i1 1 I seismic restraint analvsis p rogram. Snubbe rs we re re tume d to se rvi ce uo on como le- I g1 i7, I tion of the modifications. j I

l i l 31 l I1 l4l l 80 7 8 9 A  % POWER C NEA STATUS t40 RY DISCOVERY DESCRIPTION li ls l l D l@ lo 11 l6 l@l N/A l l A l@l operator Observation l ACTivlTY CO TENT AELEASED CJRELEASE AMOUNT OF ACTIVITY LOCATION CF RELEASE I I N/A I li le I LZ_J @ Id@l N/A PERSONNEL EXPOS ES NUM81ER TYPE DESCRIPTION I

l i l 71 1 o l o l o @l Z l@l N/A "

PERSONNE t iNJu' RIES NUMBER DESCRIPTION R lolol0l@l 7 8 9 11 12 N/A 80 I

LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION Li_l2J llj@l N/A I PususTY DEScaiPTiON g gO9150598e10820 NRC USE ONLY s R ADOCK 0500026,7 iSSu E D  %

N/A pg i iiiiiiiiiiiii; 12 l al LEJ81to 68 69 80 5 7 8 9 NAf.tF CF PREPARER

. PHONE: ( 303) 785-2224 {

.- - _ " - T. _. ^T~ -_, . . _ . . . ..