Technology for Controlling Stress Corrosion of Liquid Ammonia Tank in Service

The technique of resisting stress corrosion cracking (SCC) of the inter wall of serviced liquid ammonia tank was analyzed. Practice proves that the design factors include determining the design temperature and the wall thickness of tank determining, the materials of tank selecting, and so on. The manufacturing factors include taking appropriate shaping mode, assembly welding control, post-weld heat treatment control. The operation and maintenance factors include accurate handing exposed manufacturing defects, the composition, pressure, temperature of the medium meet the requirements making.