ML19345D429

LER 80-087/03L-0:on 801106,leak Rate in Drywell Calculated at 5.95 Gpm.Caused by Leaking Packing on B Recirculation Pump Discharge Motor Operated Valve 202-5B.Valve Repacked

ML19345D429
Person / Time
Site:	Pilgrim
Issue date:	12/05/1980
From:	Mcloughlin M BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19345D428	List: ML19345D427 ML19345D429
References
LER-80-087-03L, LER-80-87-3L, NUDOCS 8012150092
Download: ML19345D429 (1)

Text

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LICENSEE EVENT REPORT CONTROL BLOCK: l l l l l l e

lh (PLEASE PRINT OR TY"E ALL REQUIRED INFORMATION) l o l t8 l9 .l M lLICENSEE 7

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7 8 le ATE EVs ESCRIPTION AND PROBABLE CONSEGUENCES h 10l2l l On November 6. 1980 following a pump-down of the Drvwell Floor Sump, the unidentified]

y a ;3; l leak rate in the drywell was calculated to 5.95 gpm. Technical Specification Sectioni l

[o ;4 l l 3.6.C.1 requires the reactor to be shutdown within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> when unidentified reactori l o i s J l coolant leakage within the drywell exceeds 5 gpm. The reactor was immediately shut l l 1016l l down. Investigation revealed that the "B" Recirculation Pumn's Discharge Motor l lo I7l l Operated Valve 202-53 packing was leaking. The valve was repacked, satisfactorily l l o i3 j ; leak rate tested and returned to service. ]

7 8 9 80 DE CODE St8CO E COVPO*'YNT CODE SUBCODE S E 10191 7 8 l C l I l@ [E_j@ (3_j @ j y l A l L l v l E l x l@ l E l@ g @

9 TO 11 12 13 18 19 20

,_ SE QU ENTI AL OCCURRENCE REPORT REVISION LER Ro EVENT YEAR REPORT NO. CODE TYPE NO.

@ Ngar a la 10 l l-l l 01817l I/l 10131 It I l-l 101

_ 21 22 23 24 26 27 28 '9 30 31 32 TAKEN A T ON ON PLANT METHO HOURS S8 i D FOR 8. SUPPt tER MANUFACTURER lB J3 l@l34 Zl@ lA 35 l@ y@

36 l 0 l 1l 916 l 3/ 40 l Nl@

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44 CAUSE DESCRIPTION AND COARECTIVE ACTIONS h l i t o l l A packing leak on valve 202-5B. a crane motor operated, 28 inch globe valve was l lilij l determined to be the cause of the excessive leakage. The valve was repacked. I l i 121 l I l i l 31 I l 11 1411 1 7 3 9 80 STA  % POWE R OTHER STATUS OtSCO R DISCOVERY DESCRIPTION

[T R lE l@ l 1l 0 l 0 l@l N.A. l Operational Event l A l@l l ACTIVITY CO TENT RELEASED OP RELEASE LOCATION OF RELEASE l1 168 l I Z l @ l10Z l@l 7 '3 tt AuOuNTOr N.A. ACriviTv 44 l

45

@N.A. l l PEaSONNEL EXPOSURES 80 NUMBER TYPE DE SCRIPTION l 1 l 7 l l 0 l 0 l 0 l@l Z l@l N.A. l PERSoNNe't iNau' lies

• NUMBER DESCRIPTION W 10 7 8 9 l010 l@L 11 14 N.A. l 80 LOSS OF OR DAMAGE To FACILITY TYPE DESCRIPTION

[TTl { @l 7 8 9 10 N.A. l

" * 80

,s30 E o NRC USE ONLY 2 o [N hlESCR,PTiON@ N.A. l lllllllllllllj 7 8 9 to 68 69 80 li, b O 3 L I NE P PREPARER M. omas McLoughlin pggyg 617-746-7900

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