ML20024B436
| ML20024B436 | |
| Person / Time | |
|---|---|
| Site: | Oconee, Crane  |
| Issue date: | 12/01/1976 |
| From: | Burnley R, Creacy C, Klein S BABCOCK & WILCOX CO. |
| To: | |
| Shared Package | |
| ML20024B434 | List: |
| References | |
| TASK-03, TASK-3, TASK-GB GPU-2512, NUDOCS 8307080724 | |
| Download: ML20024B436 (5) | |
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- I) w SITE PROBLEM REPORT BABCOCK L IlLCDI_
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CUSTCutR oconee III CONTRACT NO. Nss-c9
$PR NO.107 REY.NO.
VENDOR Dresser P.O. NO. 20158Ls TASR NQ.
28 CROUP NO.
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SITE ENGINEER T.C.Crisbaus For info ontv Ilb EI.ECTRCMATIC RELEIT VALVE MALT 1.3CTION CESCRIPi!QN OF PROBLEg on Friday, June iJth Duke reduced power to 12: FP in pre-paration to cold shutdown for RCP seal replacement. During the transition from e
turW to turbine bypass the primary system experienced a pressure transient to 226l psia.. The power relief valve actuated at 2257 psig and f ailed to close. This
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causeithe Quench Tank rupture disc to rupture. Failure to promptly close the L
power relief isolation valve caused violations of the fuel compression curve, cooldown rates and RC ptmps hPSP. curve. Inspection of the power relief vs1ve afte r shutdown indicated that the pilot valve lever had remained in the ported position I
MMN8.}hgagive,f fg,,resyting.13estrainho{the lever was caused by e
$lAluS. ACilCN 10 QAIE ]NCLU0 LNG PERSGNS CCNIACIED F
JT J.nis.NSD, Lynchburg, KA Ellison, NSD, Lynchburg, advised of problem. Valve
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has been repaired (6/20/75) and reinstalled. Repair was effected by increasing the r
~,,..ance for the lever pin in both the s!len.oid bracket and the lever hinge beari ng clear
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t FURTHER ACilCN RECCHENDEO ST SITE PERSONNEL sites be advised to conduct periodic inspection / operation of valve to insure i
operability. When plant shuts devn, perform manual / visual checks for freedom I
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DEVIATICNS O NONE O SEE SPR REV. NO.
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INSTRUCTIONS FOR PDS-21091 - SITE PKOBLCi RIPORT t,
Initiated by EW Construction or NPCD Nuclear Service
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(1) Originator - Fill in: Customet;, Contract Number; Vendor; Purchase Order I
Nu=ber; Task Nu=Eer;" Croup Number; Sequence Number; Name; Title; Description oIProblem; Status; Furtheir Action Recornended by Site Personnel; Originator Signature and Date; Vendor Claim (NPCD only - if applicable) 3 (2) Senior BW Construction - Fill in: SPR Nu=ber; Revision Nu=ber; Reg'd. Resol.
Co. Site Representative Date; Req'd. Coep. Date; Approval Signature; or Site Operations Date.
Manager (3) Nuclear Service Support Engineer - Fill in: Cost Category; Authorized Charge Number.
i (4) Nuclear Service t' nit Manager - Fill in: Resolution; FC Req. and FC Number; and/or Task Engineer Signature and Date.
(5) Plant Start-up Section - Approve Resolution; Signature; Date.
Manager or Service and Maintenance Unit Manager (6) Project Manager or - Verify Charge Nu=ber; Approve Resolution; Signature and i
Contract Engineer Date.
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(7) Senior B&W Construction - Implement resolution; upon completion, fill in:
Co. Site Representative Completion Report: Date Completed and Signature.
or Field Engineer (8) Site Operations Manager - Approve completion; sign.
or Senior 3&*J Construction Co. Site Representative
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RH.AT G CPRs This SPR has been reviewed by Task Ingineering Croup: at.d is applicable to N: 3-O6 The following f
is the status ard/or resolution of this SPR on other contra' cts, d^
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For Infor:sation CCNT1 TACT No 620-do 4 %
To Central Enrineering Files SFR \\D TITLE % b d k C. C. Flunket t - Contract Admin.
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S. H. Klein
- Quality As s uran c e M
VA hM - Task Engineer
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DATE:
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- Project Manager
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b The attached.. cleared SPA is s af tted for your information.
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'TO:
E. L. Lo5an: - TLORIDA rJ.
. L. C. Rogers - ET.D.
L J. Baker - TCLEDO 3
B. L. Day - Intl. Suppare
.F. E. Perrone - CTI el Attached is one copy of Site Prrblem Report No. N1 which *was processed '
f on Contract 620-00 @
Future contracts h' ave been. re' vie.wed for. the
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.e potential of a similar problem. This problem Mis not considered applicable l
to other contracts
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a 2EMARKS:
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C88 C. M. Jacks - Plant Integration This SPR has bee.n reviewed I.W NPC-1707-01 NUCLEAR SERVICE SL;PPORT E.NGI'iEER s
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