05000267/LER-1980-044-03, /03L-0:on 800816,while Operating at 30% Power, Boiler Feed Pump a Was Removed from Svc Due to Unstable Governor Controls.Boiler Feed Pump B Was Out of Svc Also. Caused by Governor Worm Gear Being Loose on Shaft

/03L-0:on 800816,while Operating at 30% Power, Boiler Feed Pump a Was Removed from Svc Due to Unstable Governor Controls.Boiler Feed Pump B Was Out of Svc Also. Caused by Governor Worm Gear Being Loose on Shaft

ML19338D655
Person / Time
Site:	Fort Saint Vrain
Issue date:	09/15/1980
From:	PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19338D654	List: 05000267/LER-1980-044, Forwards LER 80-044/03L-0 05000267/LER-1980-044-03, /03L-0:on 800816,while Operating at 30% Power, Boiler Feed Pump a Was Removed from Svc Due to Unstable Governor Controls.Boiler Feed Pump B Was Out of Svc Also. Caused by Governor Worm Gear Being Loose on Shaft
References
LER-80-044-03L, LER-80-44-3L, NUDOCS 8009230614
Download: ML19338D655 (1)

LER-1980-044, /03L-0:on 800816,while Operating at 30% Power, Boiler Feed Pump a Was Removed from Svc Due to Unstable Governor Controls.Boiler Feed Pump B Was Out of Svc Also. Caused by Governor Worm Gear Being Loose on Shaft

Event date:
Report date:
2671980044R03 - NRC Website

text

NRC FC And 364 U. S. NUCLEAR REIOLATO"Y COMMISSION (7 77).

LICENSEE EVENT REPORT CONTROL SLCCK: l 1

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COCK ET NUMBER 68 69 EVENT O ATE 74 75 PEPORT OATE 80 E\\ l NT DESCRIPTION AND PROS ABLE CONSEQUENCES h I o 121 l At 0110 hours0.00127 days <br />0.0306 hours <br />1.818783e-4 weeks <br />4.1855e-5 months <br /> on August 16, 1980, while operating at 30% the rmal oower and 60 %'e, "A"l [o i3 l l boiler feedpump uns removed from service due to instability of speed and governor i

i o l 41 l controls.

"B" boiler feedpump was out of service at the time due to leakage at the l

o;3 ; discharge check valve. This is being reported as a degraded mode of LCO 4.3.2 per l

l o is j l Fort St. Vrain Technical Specification AC 7.5.2(b)2.

No accompanying y cy rence or l

1 o 17 l l probable consequences. No affect on public health or safety.

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l i j o i l Cause of governor control instability was determined to be due to the governor worm I

tilil [ drive gear being loose on the shaf t.

The gear is being remachined and the shaf t is I

,,,,,I being sent off-site for metal spraying.

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