Replacement of Turbine Controls, Supervisory and Overspeed Protection for Point Lepreau

Abstract

As part of the ongoing Point Lepreau Nuclear Power Station refurbishment program, the replacement of turbine controls, turbine supervisory and overspeed protection equipment is being designed and coordinated by AECL. This paper describes the scope of replacement and critical areas that were considered during the process of preliminary design through to final installation of the equipment. The interface of a modern distributed control system (DCS) with the existing station digital control computers (DCCs) and complexities of integrating with other refurbishment work associated with the turbine/generator are discussed. With an operating station, the need to minimize peripheral changes is also considered.