Our team worked on the replacement of original GE MDT-20 control system components, existing GE Mark II turbine control system components, installation of redundant instrumentation, and upgrades to any peripheral systems that interface to the turbine controls as required to increase reliability of the system at Wolf Creek Generating Station. The project also upgraded the full scope and classroom simulators. The principal objectives of this replacement were to replace obsolete components, mitigate single point vulnerabilities (SPVs), reduce maintenance and improve the overall reliability of the feed pumps.
The new steam generator feed pump (SGFP) control system and the turbine control system are built on the Emerson Ovation product platform from Westinghouse Electric Co. LLC. Ovation is a distributed control and information system manufactured by Emerson Process Management. It is an open architecture distributed control system (DCS) and supported with field-proven industry standard hardware and software that offer outstanding availability, reliability and ease of maintenance. The system is flexible and provides fault tolerance through the system architecture and use of redundancy.
Westinghouse provided the design, development, fabrication and testing of the new control system software and hardware. WCNOC was responsible for the overall design change package, oversight of the new system development and installation of the new system. Acceptance testing was a joint effort between WCNOC and Westinghouse.
We were tasked with development of several of the design change packages (DCPs) to support the replacement of the turbine control system and the upgrades to the peripheral systems. We provided senior instrumentation and control, mechanical and structural engineers, whose responsibilities included:
Preparation and review of new design specifications for the SGFP system
Preparation and/or update of design calculations for both systems
Preparation of markups/revisions to design drawings for both systems
Preparation of DCP dispositions and design bases for both systems
Preparation of DCPs and associated documentation for both systems
Preparation and review of installation work instructions for both systems
Review and evalutation of system modification proposals for the turbine control system
Review and approval of vendor supplied documentation for both systems
Oversight and technical support of equipment installation for the SGFP system