From 2021 to 2023,China Special Equipment Inspection & Research Institute conducted a continuous corrosion investigation on the pressure vessels and pipelines of a synthetic ammonia plant in a petrochemical enterprise.The process flow of the plant was sorted out,potential damage modes were analyzed,and 46 pressure vessel defects and 992 pressure pipeline defects were discovered through targeted technical means.It was found that the serious corrosion and thinning of the crude gas pipeline,the stress corrosion cracking of the transformation gas pipeline,etc.,the treatment suggestions were put forward,which provided technical support for enterprises to control corrosion and solve hidden dangers.
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