Wakamatsu High-Temperature Turbine Verification Test Project : A Study of a Large-Capacity Coal-Fired USC Plant

Abstract

This paper reviews the design of the EPDC's Wakamatsu high-temperature turbine and the operating performance of its first-step verification test, STEP I, which features main/reheat steam temperatures of 593°C/593°C. In designing this turbine, a number of new concepts for elevated temperature use were incorporated, and several types of new heat-resistant steels were used in the major parts. Since the initial startup in November 1986, the operating performance of the Wakamatsu high-temperature turbine STEP I has so far demonstrated high reliability, and many valuable data are being obtained, proving the practicality of a large-capacity USC turbine.