ML20023D249

LER 83-032/03L-0:on 830412,during Mode 5,visual Insp of Hydraulic Snubber 2-WGCB-HSS-3B Revealed Damaged Reservoir W/O Fluid.Caused by Personnel Working in Area.Snubber Replaced

ML20023D249
Person / Time
Site:	North Anna
Issue date:	05/11/1983
From:	Harrell E VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20023D244	List: ML20023D243 ML20023D249
References
LER-83-032-03L, LER-83-32-3L, NUDOCS 8305200284
Download: ML20023D249 (2)

Text

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U.S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT CONTROL BLOCK / / / / / / / (1) (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

/0/1/ /V/A/N/A/S/2/ (2) /0/0/-/0/0/0/0/0/-/0/0/ (3) /4/1/1/1/1/ (4) / / / (5)

LICENSEE CODE LICENSE NUMBER LICENSE TYPE CAT

/0/1/

UR &/(6) /0/5/0/0/0/3/3/9/ (7)

DOCKET NUMBER

/0/4/1/2/8/3/

EVENT DATE (8) S /5 /1/1/8 /3 / (9)

REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES (10)

/0/2/ / On April 12, 1983, during Mode 5 operation a visual inspection of Hydraulic Snu- /

/0/3/ / bber 2-WGCB-HSS-3B revealed the reservoir was damaged and completely empty of /

/0/4/ / fluid. The snubber was declared inoperable as required by T.S. 3.7.10. Since /

/0/5/ / the snubber was replaced prior to Mode 4 operation, the health and safety of the /

/0/6/ / public were not affected. This event is reportable pursuant to T.S. 6.9.1.9.b. /

/0/7/ / . __/

/0/8/ / /

SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE l /0/9/ /H/I/ (11) /E/ (12) /X/ (13) /S/U/P/0/R/T/ /D/ /Z/

SEQUENTIAL OCCURRENCE REPORT REVISION LER/R0 EVENT YEAR REPORT NO. CODE TYPE NO.

(17) REPORT NUMBER /8/3/ /-/ /0/3/2/ A/ /0/3/ /L/ /-/ /0/

ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRD-4 PRIME COMP. COMPONENT TAKEN ACTION ON PLANT METHOD HOURS SUBMITTED FORM SUB. SUPPLIER MANUFACTURER

/C/ (18) /Z/ (19) /Z/ (20) /Z/ (21) /0/0/0/0/ (22) /Y/ (23) /N/ (24) /A/ (25) /G/2/5/5/(26)

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS (27)

/1/0/ / It is believed that the reservoir was damaged by personnel working in the area. /

/1/1/ / The snubber was replaced with a spare and the hanger declared operable. /

/1/2/ / /

/1/3/ / /

/1/4/ / /

FACILITY METHOD OF STATUS  % POWER OTHER STATUS DISCOVERY DESCRIPTION (32) j /1/5/ LG/ (28) /0/0/0/ (29) / NA / I ) DISCOVERY g/ (31) / Periodic Inspection /

ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY (35) LOCATION OF RELEASE (36) j /1/6/ /Z/ (33) /Z/ (34) / NA / / NA /

l PERSONNEL EXPOSURES

! NUMBER TYPE DESCRIPTION (39)

! /1/7/ /0/0/0/ (37) /Z/ (38) / NA /

PERSONNEL INJURIES NUMBER DESCRIPTION (41) f /1/8/ /0/0/0/ (40) / NA /

l LOSS OF OR DAMAGE TO FACILITY (43) 8305200284 930511

, TYPE DESCRIPTION PDR ADOCK 05000339

/1/9/ /Z/ (42) / NA S PDR /

, PUBLICITY ISSUED DESCRIPTION (45) NRC USE ONLY

/2/0/ /N/ (44) / NA /////////////

NAME OF PREPARER E. WAYNE HARRELL PHONE (703) 894-5151

= . . . . ,

Virginia Electric and-Power Company North Anna Power Station, Unit No. 2

Attachment:

Page 1 of 1 Docket No. 50-339 Report No. LER 83-032/03L-0 Description of Event On April 12, 1983, while conducting an 18 month Surveillance Test during Mode 5 operation, Hydraulic Shock Suppressor, 2-WGCB-HSS-3B Reservoir was found cracked and empty of fluid. The snubber was declared inoperable as required by T.S. 3.7.10.

Probable Consequences of Occurrence 2-WGCB-HSS-3B and 3A are part of a hanger used to support 2-WGCB-415 "B" Steam Generator Blowdown Line, directly downstream of the Containment Penetration in the Auxiliary Building. Since snubber 2-WGCB-HSS-3A was still operable and snubber 3B was replaced in accordance with T.S. 3.7.10 the health and safety of the public were not affected.

Cause of Event It is believed that the reservoir was damaged by personnel working

in the area.

Immediate Corrective Action -

2-WGCB-HSS-3B was replaced with a tested identical replacement snubber.

Scheduled Corrective Action l

None required.

l Actions Taken to Prevent Recurrence None required.

Generic Implications There are no generic implications, l

I