ML20116J896

Corrected Monthly Operating Rept for Sept 1992 for Fort Calhoun Station

ML20116J896
Person / Time
Site:	Fort Calhoun
Issue date:	09/30/1992
From:	OMAHA PUBLIC POWER DISTRICT
To:
Shared Package
ML20116J877	List: ML20116J874 ML20116J886 ML20116J896
References
NUDOCS 9211160423
Download: ML20116J896 (2)

Text

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-U.. S. Nuclear Regulatory Comission LIC-92-331 I

ENCLOSVRE &

Carr_ected Pace for September 1992 MOR 1

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9211160423 9211A3 PDR ADOCK 05000285-R PDR 1;, .

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Monthly Operating Report  !

LIC-92-310R l Page 2 l Early in the month, leakage results were erratic.- -This is attributed to the transient RCS conditions due-to plant start-up.

Following start-up, leakage results were consistent.

The total RCS leak rate averaged 0.2 $ m in September. "Known" l lealage rate to the RCDT increased sli htly as compared to last month. Following the increase in the le kage aftar the August Et-  :

reactor trip and shutdown, the RCS leak rate appears to be steady l' with no adverse trends noted.

C. CHANGES, TESTS AND EXPERIMENTS REQUIRING NUCl_ EAR REGULATORY COMMISSION AUTHORIZATION PURSUANT T0 10CFR50.59 Amendment No. Description None.

D. SIGNIFICANT SAFETY RELATED MAINTENANCE FOR THE MONTH OF SEPTEMBER 1992 Replaced reactor coolant pump (RC-3D) shaft seal.

Replaced locking sleeve and -clamping device on the NI cable connector for the beated junction thern,acouple (YE-1168).

Repaired pin hole loak downstream of CH-364 (domineralized water inlet to charging pump CH-1B discharge isolation valve).

Repaired Battery Charger #1 (EE-8C) to eliminate excessive charger output ripple and vibration.

Replaccd the "0" rings and diaphragm on the charging-to Loop 1A isolation valve operator.

Replaced the power supply of the high pressure discharge header pressure loop (PQ-309).

Lift pressures were reset and verified on the pressurizer code safety valves (RC-141 and RC-142).

Setpoints were lowered to 2350 psia-for the RPS High Pressure Trip and Power Operated Relief Valves.

Replaced the 52/STA 3BH switches in the following feeder breaker cubicler- Transformer TIB-3A, spare motor feeder IA3-17 and the-feeaar for reactor coolant pump RC-30 motor IA4-16.

Removed and repaired the containment VA-8A cooling coil CCW inlet relief valve (AC-285).

Replaced the containunt spray flow indication loop power supply (FQ-342).

Installed cabling to FW-5A/B/C to resolve a potential fire barrier degradaticn in the switchgear room.