05000395/LER-1982-010, Forwards LER 82-010/03L-0.Detailed Event Analysis Encl

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Forwards LER 82-010/03L-0.Detailed Event Analysis Encl
ML20066A952
Person / Time
Site: Summer South Carolina Electric & Gas Company icon.png
Issue date: 10/28/1982
From: Dixon O
SOUTH CAROLINA ELECTRIC & GAS CO.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20066A954 List:
References
NUDOCS 8211060295
Download: ML20066A952 (2)


LER-2082-010, Forwards LER 82-010/03L-0.Detailed Event Analysis Encl
Event date:
Report date:
3952082010R00 - NRC Website

text

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SOUTH CAROLINA ELECTRIC & GAS COMPANY POST OFFICE 764 COLuusrA. SOUTH CAROLINA 29218  ;

o. w. oixOu. an. 3 '. 73 v,c e...o."'

NUCLEAn OrenAtiONS October 28, 19ti2

,.g r.$,

3 ca p 1 ' C-r~.s Mr. James P. O'Reilly, Director .. (. 7 U.S. Nuclear Regulatory Commission u *i' Region II, Suite 3100 .c v 101 Marietta Street, N.W.

Atlanta, Georgia 30303 -

SUBJECT:

Virgil C. Summer Nuclear Station Docket No. 50/395 Operating License No. NPF-12 Thirty Day Written Report LER 82-010

Dear Mr. O' Reilly:

Please find attached Licensee Event Report #82-010 for Virgil C. Summer Nuclear Station. This Thirty Day Report is required by Technical Specification 6.9.1.13.(b) as a result of entry into Action Statement B of Technical Specification 3.4.4.(b),

" Relief Valves," on October 1, 1982. .

Should there be any questions, please call us at your convenience.

Very truly yours,

~

0. W.[Dixon,Jc.

ARK:0WD:dwf Attachment cc: V. C. Summer A. R. Koon T. C. Nichols, Jr. H. Radin G. H. Fischer Site QA

0. W. Dixon, Jr. C. L. Ligon (NSRC)

H. N. Cyrus G. J. Braddick

~

H. T. Babb J. L. Skolas D. A. Nauman J. B. Knotts, Jr.

M. B. Whitaker, Jr. B. A. Bursey W. A. Williams, Jr. 1&E (Washington)

O. S. Bradham Document Management Branch R. B. Clary NPCF M. N. Browne File gy6 -

8211060295 821028

-p PDR ADOCK 05000395 /

S PDR

t o Mr. James P. O'Reilly LER No.82-010 Page Two

.0ctober 28, 1982 DETAILED DESCRIPTION OF EVENT On October 1,1982, during the performance of . Hot' Shutdown Test .(HST-2), " Reactor Vessel 0-Ring Leak Test," the reactor coolant system pressure is required to be increased to 2350 psig. There are three pressurizer PORV's which are set to lift at 2335 psig. The PORV block valves (one for each PORV).

were closed .to isolate the PORV's. Upon the completionf or HST-2, one PORV Block Valve (MVG-8000 A) would not reopen. The Plant was in Mode 3 at the time.

PROBABLE CONSEQUENCES There were no adverse consequences as a result of the occurrence. The PORV's serve to relieve pressurizer pressure at~ 2335 psig and are backed up by three pressurizer code safeties for overpressure protection, which are set to lift at 2485 psig. Also, two PORV's and their associated PORV block valves remained OPERABLE.

CAUSE(S) 0F THE OCCURRENCE The cause of the occurrence was the normal end of the stem packing life. The stem packing was adjusted due to wear which, subsequently, caused the contact switches of the valve operator (Limitorque) to open on overtorque.

IMMEDIATE CORRECTIVE ACTIONS TAKEN i

l The valve stem packing was replaced and adjusted. The valve was then tested satisfactorily por the associated Surveillance ,

Test Procedure.

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ACTION TAKEN TO PREVENT RECURRENCE l .These valves will be covered under the Station Preventive l Maintenance Program to prevent recurrence in.the future.

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