Crack Damage Repair in the Spherical Storage Tank for Ammonia and Subsequent Analysis

摘要

During the exploatation of the spherical storage tank for ammonia, transverse and longitudinal crackappeared in the weld metal and the inner welded joints. This damage was detected during regular test by nondestructivetechiques. The damage was located and necessary repairs were conducted (abgrading and welding).Afterwards, detailed tensometric test were performed, which affirmed the structural integrity of the tank, and decisionof its further usage was established.