608 PWR向けBOPシステムの構築 : ASD方式給水ポンプの適用検討(関東支部茨城講演会)

概要

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Recently, as one of the measures to reduce the BOP cost, adjustable speed driven (ASD) type is applied for feedwater pump in place of turbine driven type. The purpose of this study is to evaluate the ASD type feedwater pump for PWR plants which is expected in near future, focusing on the evaluation of net electrical output, briefevaluation of equipment cost and equipment arrangement. In addition, the operation characteristic of ASD type feedwater pump is evaluated in case of plant startup and transition. This study includes the following evaluation items for ASD type feedwater pump: (1) Net plant output evaluation (2) Transient analysis for feedwater pump trip. ASD type feedwater pump is controllable at low flow operation during start-up. Feedwater flow recovery time is within the demand of Nuclear Steam Supply System (NSSS) feedwater control system, in accordance with the transient analysis result. ASD type feedwater pump has advantage in efficiency in comparison with Turbine driven feedwater pump.
2005-09-08