Abstract
In order to improve the reliability of PWR steam generators, we have performed research to improve the tubing material and tube-support-plate configuration, based on our wide operating experience, and have developed and verified TT Alloy 690 as the optimum tubing material and the BEC type tube-support design. In the research, we have studied the metallurgical mechanism of the alloy to improve its corrosion resistance, evaluated corrosion susceptible region quantitatively, estimated the actual environment in a steam generator and confirmed the reliability by a model boiler test over a long period. It has been verified that the steam generator with the latest design has higher reliability with respect to the corrosion resistance of tubes.
| Original language | English |
|---|---|
| Pages (from-to) | 6-10 |
| Number of pages | 5 |
| Journal | Technical Review - Mitsubishi Heavy Industries |
| Volume | 33 |
| Issue number | 1 |
| Publication status | Published - 1996 Dec 1 |
ASJC Scopus subject areas
- Mechanical Engineering