Thermal fatigue failure and design modification of a steam exhaust silencer

✍ Scribed by Soon-Bok Lee

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 864 KB
• Volume: 2
• Category: Article
• ISSN: 1350-6307
• DOI: 10.1016/1350-6307(95)00024-0

✦ Synopsis

A steam exhaust silencer in a power-plant was subjected to thermal cycling as the system was started up, operated and shut down. The acoustic splitters in the silencer were blown out to about 80 m after only 6 months of operation. The cause of the significant failure was low cycle thermal fatigue and fracture of the connection between the silencer case and the inside splitter. A failure analysis was performed and a design modification was made to avoid further failures.