en.Wedoany.com Reported - Westinghouse has updated its MG set control cabinet design for power supply applications in pressurized water reactor (PWR) rod drive power systems (RDPS) and control element drive mechanism control systems (CEDMCS). These cabinets serve as direct replacements for the original Westinghouse control cabinets, retaining the existing footprint and plant interfaces, and are suitable for PWR plants from both Westinghouse Electric Company and Combustion Engineering. The updated design eliminates long-standing obsolescence issues and single points of failure, with each cabinet continuing to control its own MG set, maintaining system redundancy and operational continuity.
Obsolete components eliminated include voltage regulators, X-type synchronizers, and timing relays; single points of failure eliminated include BOV rectifiers, AV relays, and IRV relays. Voltage regulators, synchronizers, and timing relays have been replaced with modern, currently manufactured technology. The modernized cabinets also incorporate targeted improvements, including enhanced reliability through cabinet health monitoring as well as MG temperature and vibration monitoring, reduced troubleshooting time with clearer labeling and a maintenance-friendly layout, enhanced diagnostic capabilities with panel-mounted human-machine interface indications and time-stamped event recording, updated drawings and bill of materials structures to support configuration control and procurement, and resolution of obsolescence issues while maintaining compatibility with common plant interfaces.
Westinghouse has established an MG Experience Lab at its New Stanton facility, equipped with an operating prototype unit and an original MG set, to support customer-specific needs and troubleshooting services. Westinghouse developed the original MG sets and control cabinets installed in the majority of the global PWR fleet, and the modernized product retains the proven system architecture while incorporating lessons learned and modern design practices.
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