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A faulty Digital Control System Output Fil … A faulty Digital Control System Output Filter was discovered at Farley Nuclear Power station while installing it on the emergency feedwater Terry Steam Turbine. The problem only affects two plants: Farley Nuclear Power Station and San Onofre Nuclear Power Station. Farley replaced the filter before use. San Onofre had installed and used the filter, but they are replacing it.</br>Description of Defect:</br>Eyelets inserted into the printed circuit (p.c.) board to make connections from one side of the board to the other side were not soldered on the top side where the terminal block is installed. This may result in the connection being broken during tightening of the wire lug on the terminal block or if other stresses are applied to the p.c. board or terminal block. This defect is limited to output filter serial numbers 10009, 10010, 10011, and 10012.</br>Engineering Evaluation and Recommendations:</br>Failure can occur during assembly. The results of a seismic event are unknown. All 4 filters must be recovered and repaired. Locations of the 4 filters include Dresser-Rand, Farley Nuclear Station, and San Onofre Nuclear Generating Station.and San Onofre Nuclear Generating Station. +
04:00:00, 12 May 2010 +
45,921 +
18:39:00, 12 May 2010 +
04:00:00, 12 May 2010 +
A faulty Digital Control System Output Fil … A faulty Digital Control System Output Filter was discovered at Farley Nuclear Power station while installing it on the emergency feedwater Terry Steam Turbine. The problem only affects two plants: Farley Nuclear Power Station and San Onofre Nuclear Power Station. Farley replaced the filter before use. San Onofre had installed and used the filter, but they are replacing it.</br>Description of Defect:</br>Eyelets inserted into the printed circuit (p.c.) board to make connections from one side of the board to the other side were not soldered on the top side where the terminal block is installed. This may result in the connection being broken during tightening of the wire lug on the terminal block or if other stresses are applied to the p.c. board or terminal block. This defect is limited to output filter serial numbers 10009, 10010, 10011, and 10012.</br>Engineering Evaluation and Recommendations:</br>Failure can occur during assembly. The results of a seismic event are unknown. All 4 filters must be recovered and repaired. Locations of the 4 filters include Dresser-Rand, Farley Nuclear Station, and San Onofre Nuclear Generating Station.and San Onofre Nuclear Generating Station. +
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00:00:00, 12 May 2010 +
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0.61 d (14.65 hours, 0.0872 weeks, 0.0201 months) +
04:00:00, 12 May 2010 +
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