ML20050N669

LER 82-009/01T-0:on 820323,while Conducting Routine Reactor Vessel Hydrostatic Testing Prior to Startup,Water Observed Leaking from Insulation on Recirculation Piping.Cause Being Investigated

ML20050N669
Person / Time
Site:	Nine Mile Point
Issue date:	04/05/1982
From:	Mclaughlin K NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20050N665	List: ML20050N662 ML20050N669
References
LER-82-009-01T, LER-82-9-1T, NUDOCS 8204140405
Download: ML20050N669 (2)

Text

NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION (7-77)

LICENSEE EVENT REPORT 3

CONTROL BLOCK: l l l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED IRFORMATIOM) 1 6 l0 li] 8l 9N l Y LICENSEE 7

l N l MCODE ] P l 114 l@l15 0 l 0 l - l 0 lLICENSE 0 l 0NUMBER l 0 l 0 l - l 0 l 0 25]@l264 l 1LICENSE l 1 l 1TYPE l 1JOl@l57 l CAT 58 l@

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EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h l o l 2 l l During cold shutdown, while conducting routine reactor vessel hydrostatic testing priot

[O i3 j l to startup, water was observed Icaking from the insulation on #11 recirculation piping l

[O i4 [ [ discharge to reactor vessel and #15 recirculation piping suction from reactor vessel. I 10 l 5 l l After removing the insulation and visually examining the #11 discharge safe-end, threel 10 ls l l (3) areas were noted to be " weeping" water. The three Icaks are located one cach at l l 0 (Fl l approximately "12 o' clock", "9 o' clock" and "11 o' clock" (all locations were taken I i o ia j l looking at the reactor vessel). Upon examining the P15 suction safe-end area, one (1)l 7 a9 SEE ATTACllHD SYSTEM CAUSE CAUSE COMP VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE 10191 l Cl Al@ lE l@ y@ l PlI lP lE lX lX l@ l E l@ W @

12 13 18 19 20 7 8 9 TO 11

,,,, SE QUENTI AL OCCUR RE NCE REPORT REVISION EVENT YE AR REPORT NO. CODE TYPE NO.

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42 W@ l44B ] 0 l 6 l 2 lg 43 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 77 11 l o 1 IThe cause of this occurrence is still beine investicated. The site is nresentiv im- l li li l I nlementine plans to replace all 10 vessel nozzle to recirenintion ninino snfo ona l I

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l i 14 I I 80 7 8 9 ST  % POWER OTHER STATUS is OV RY DISCOVERY DESCRIPTION I i l 5 l [(],jh l0 l0 l0 lhl NA I W @l Visual Inspection I ACTIVITY CO TENT RELEASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION OF RELEASE Ii I68i9LIJ @ LIl@l x^ l I NA I 7 10 11 44 45 80 PERSONNEL EXPOSURES NUV8E R TYPE DESCRIPTION xA I l i l 71 10 l 010 l@l z l@l 8

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NA 1 li i s 8l 9] 010101@l 7 11 12 80 LOSS OF OR DAVAGE TO F ACILITY TYPE D E SCRIPTION l

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]zi@l 10 NA 80 ISSU E D DESCRIPTION gM V I Reported to media 3/'s /9' _ ionn t/,4/e, ionn l l l I I I I l I l l l l l *4 68 6 '> 8o a 920405 PDR ADOCK 05000 S Kevin McLauchlin PHONE: N 9 313 7110

..t LER 82-09 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES (Cont'd.)

area was noted to be " weeping" water. This leak is located at approximately "8 o' clock".

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