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Vol.5 No.1 previous AA SP9 (59-60-61-62-63-64-65-66)-67-NT 56 -57

Academic Articles
Regular Paper Vol.5No.2 (2013) p.132 - p.137
 

Safety Measures for the Main Control Board Replacement Project at Ikata Units 1 & 2

 
Nozomu HASHIMOTO1*, Kenji TADA1
 
1SHIKOKU ELECTRIC POWER CO., INC., 2-5, Marunouchi, Kagawa, 760-8573, Japan
 
Abstract
When Units 1 and 2 of the Ikata Power Station underwent replacement of their main control boards, control cabinets, and associated equipment, it was necessary to remove all the control boards, cabinets, and cables from the control building including from the main control room. This meant the loss of operation and monitoring functions in the main control room and functions of control cabinets. To maintain the operation and monitoring functions required under plant shutdown conditions, temporary operation and monitoring equipment (i.e., temporary main control board) was installed in the temporary main control room. The advance preparations included a trial switching from the permanent to the temporary main control board to identify and address potential problems in advance. When the replacement work was underway, a work schedule sheet posted in the temporary and the permanent control rooms was used to prevent human errors caused by operators’ recognition errors. Monitoring and control signals were switched from the old boards to the temporary boards and from the temporary boards to the new boards at appropriate timings to ensure plant safety during the replacement operation.
 
Keywords
Safety, Reliability, replacement operation, temporary boards, operation and monitoring functions
 
Full Paper: PDF EJAM Vol.5No.2 pp.132-137 "Safety Measures for the Main Control Board Replacement Project at Ikata Units 1 & 2"
















Article Information
Article history:
Received 15 November 2012
Accepted 20 August 2013