ML19323A081

LER 80-011/01T-0:on 800326,utilizing Approved Station Procedure TP80-37,PNPS Jet Pumps Examined & Jet Pump Beams 1,3 & 15 Found to Have Discontinuities.Caused Not Stated. Flawed Beams & Beam Bolt Assemblies Replaced

ML19323A081
Person / Time
Site:	Pilgrim
Issue date:	04/09/1980
From:	Mcloughlin M BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19323A080	List: ML19323A079 ML19323A081
References
LER-80-011-01T, LER-80-11-1T, NUDOCS 8004170191
Download: ML19323A081 (1)

Text

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

QU ., LICENSEE EVENT REPORT

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% (PLEASE PRINT CR TYPE ALL REQUIRED INFORMATION) l0 ltl8l 9Ml AlLICENSEE 7

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EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 10121 l on March 26. 1980. utilizing approved station procedure number TP80-37 entitled l

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"U.T. Examination of Jet Pump Beams",PNPS jet pumps were examined. As a result of

,g y this testing, Jet Pump Beams 1, 3 & 15 were found to have discontinuities. The  ;

flawed beams have been replaced.  ;

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42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS ,

l i l o l l Replacement, in kind, of the beam bolt assemblies on Jet Pumps 1, 3 and 15 has been l Ii t i l l completed. Approved Station Procedure number 80-42 entitled Replacing Beams on

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I i 12 I I Reactor Vessel Jet Pumps was utilized for this maintenance. The procedure requires I g l detensioning the jet pumps, replacing the beams, and tack welding the lock nuts. l li l41 I i 7 8 9 80 ST  % POWER OTHER STATUS On O RY DISCOVERY DESCRIPTION y l H l@ l0 l 0 l0 l@l N.A. l l Cl@l Special Inspection l ACTIVITY CO TENT RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE N.A.

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80 PERSONNEL EXPOSURES NUM8ER l i 171 ] 0 l 0 l 0 l@lTYPE l @l DESCRIPTION N.A. l l PERSONNE L INJURIES NUMBER DESCRIPTION N.A.

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80 LOSS OF OR DAMAGE TO FACILITY 4 )

TYPE DESCRIPTION I i I 9 I LZ_J@l N.A. l 7 8 9 10 80 PUBLICITY NRC USE ONLY

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8004170lif-7 617-746-7900 o

- -gm M. Thomas McLoushlin s