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通过对失效的常一中换热器进析了全面的检验及分析后，认为常一中换热器的壳体、管束和紧固螺栓的开裂是在含有碳酸盐的高温循环水的介质中，由于应力腐蚀而产生的沿晶脆性断裂，并提出了改进措施。
Through the failure of the heat exchangers into a comprehensive analysis and analysis, that the heat exchangers in the shell, tube bundle and fastening bolts cracking is in the medium containing carbonated high temperature circulating water , Due to stress corrosion and brittle fracture along the crystal and put forward improvements.