Generator Refurbishment/Replacement for Life Extension Point Lepreau Refurbishment Project

Abstract

Following a decision by New Brunswick Power (NBP) to extend the life of Point Lepreau Nuclear Power Station, a number of refurbishment projects were identified for the various plant equipment and systems. AECL was awarded the contract for the refurbishment of the station of which the generator is one of the tasks included in the overall refurbishment work scope. This paper describes the basis for the various refurbishment/replacement options being considered for extending the life of the generator. Rewinding the stator and the rotor would normally offer an adequate solution; hence this option is included as the reference case. However, other considerations specific to the Point Lepreau station have prompted the development of additional combinations of options with a new stator and a new rotor as well as a complete new generator. How this affects the scope of the project, the relative merits and drawbacks of these options and their impact on the complexity of the project documents are discussed.