ML19344E090

LER 80-027/03L-0:on 800508,during Refueling Outage While Performing Surveillance on Diesel Generator 2 After Maint, Left Cylinder 8 Failed.Caused by Failure of Piston Rod Pin Bolts.Parts & Bolts Were Replaced.Torque on Bolts Checked

ML19344E090
Person / Time
Site:	Cooper
Issue date:	08/08/1980
From:	Doan P NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19344E048	List: ML19344E047 ML19344E090
References
LER-80-027-03L, LER-80-27-3L, NUDOCS 8008260613
Download: ML19344E090 (1)

Text

O. NRCFORM 366

1. (7 77)

U. S. NUCLE AR REGULATORY COMMISSloN LICENSEE EVENT REPORT (PLEASE PRINT OR TYPE ALL REQUIRED f NFORMATION)

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REPORT OATE 80 7 8 60 61 OOCKET NUMBER EVENT DESCRIPTION AND Pr.08ABLE CONSEQUENCES h I o I 2 I IDurine a scheduled refueling outage while performina surveillance on the #2 diesel i 1o lal l generator after maintenance, the #8 left cylinder failed. There are two diesel gen- 1 IoI4I lerators which serve as a backup for off site power during an emergency. The other l l o I s l idiesel generator was operable. This event oresented no adverse conseOuences from thel 1016 l Igenndnnine nf nuh14r- hanleh nna an forv. l l

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44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l i j o l lThe diesel is a KSV-16-T Cooper-Bessemer. The event was caused by the failure of the]

l 77;-] l piston rod pin bolts. Their failure was caused by the articulating rod pin bolts and; j,,,,ipiston pin bolts being stretched probably during a partial piston seizure. Damaged i i ii3i l parts were replaced, all piston bolts were replaced, and torque was checked on all l g I olts b in engine. I i s 9 80 STA 5 *,POWE R OTHER STATUS IS O RY DISCOVERY OESCRIPTION I i l 5 l l H l@ l Oi 0l0l@l NA l lBl@l Maintenance Observation l A TiVITY CONTENT RELE ASEO OF RELE ASE AVOUNT OF ACTIVITY LOCATION OF RELEASE NA I i NA I Ii Ic dI 9LzJ @ 10tzJ@lt1 J 44 45 80 PERSONNE L lxPOSUR ES NUURER TYPE DESCRIPTION lil71Inin lo l@ U @l u

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