海管在停运期间, 所采用的封存介质对海管会造成腐蚀, 影响海管解封后的使用。通过模拟海管的工作环境, 利用极化电阻法和失重法对封存期间选用的缓蚀剂进行筛选, 确定最佳缓蚀剂及最佳加注浓度。结果表明, 封存介质为淡水时, HYH-1312B缓蚀剂效果最好, 从缓蚀性和经济性方面考虑, HYH-1312B的最佳加注浓度为40 mg·L-1。

The mothballing media used for sea-pipelines will result in sea-pipeline corrosion and influence the sea-pipeline work after demothballing. By stimulating the environment of sea-pipeline and using polarization resistance method and weight-loss method, the kind and dosage of inhibitors used for mothballing were studied. The results show that the effect of HYH-1312B is the best if used in freshwater as the medium for mothballing. Considering both inhibition and economical efficiency, the best added concentration of HYH-1312B is 40 mg·L-1.