What are the radiation exposure ratio and inspection grade for pipelines using a 37% formalin aqueous solution?

2016-06-30View Original

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For existing 37% formalin aqueous solutions that do not contain the polymerization inhibitor methanol, with a high level of toxicity, where most of the pipes are operated at atmospheric pressure, the pump outlet pressure is 0.5 MPa, the pipe diameter ranges from DN50 to 100, the temperature is at room temperature, and the material used is 304, what is the proportion of such pipes that are subjected to radiographic testing for non-destructive inspection? What is the detection level? 20801, 50316, and 50184 are all different; so what exactly should be used?

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What are the radiation exposure ratio and inspection grade for pipelines using a 37% formalin aqueous solution?

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