液化石油气储罐在湿硫化氢条件下,极易发生氢腐蚀,使储罐脆性增加,在应力条件下造成硫化物应力腐蚀开裂。应力腐蚀断裂具有突然性,危害极大,磁粉检测在预防应力腐蚀中起到至关重要的作用。储罐要采取合理的管理方案,以保证在最低维护费用下让设备安全运行。简要介绍了LPG储罐应力腐蚀、磁粉检测的基本原理以及储罐的受力分析,进而总结出储罐预防应力腐蚀的措施。 Liquefied petroleum gas storage tanks in the wet hydrogen sulfide conditions, prone to hydrogen corrosion, the tank increased brittleness, resulting in sulfide stress stress corrosion cracking under stress conditions. Stress corrosion cracking with a sudden, the great harm, magnetic particle testing in the prevention of stress corrosion plays a crucial role. Storage tanks to take a reasonable management program to ensure that the lowest maintenance costs allow the safe operation of equipment. The basic principle of stress corrosion and magnetic particle inspection of LPG storage tank and the stress analysis of the storage tank are briefly introduced, and the measures to prevent stress corrosion of the storage tank are summarized.