Assessing the safety of the oil tanks in service through experiences is usually blind.

Research on the nondestructive detecting equipment of working pipelines;

On the base of foreign advanced assessment standards, we have developed the assessment system of remaining strength for long-distance transported pipeline in use, take the present situation of long-distance transported pipeline in use in our country into consideration.

By introducing the oversea s advanced technology,according to the various factors which impact gas pipeline integrity,an analysis is made of the integrity assessment of gas pipeline in service from three aspects:safety,reliability and risk.

Date of domestic and international show that the economic loss caused of the harms of enduring disease of the bridge structure is very huge, and along with variety of environment, growth of service time , raise of function request, The durability problem of in service RC bridge is more and more outstanding.