Inspection of 3LPE anti-corrosion pipe
3LPE anti-corrosion pipeline for petroleum transportation, the anti-corrosion function of epoxy powder is anti-corrosion, and the second is drag reduction. It is mainly used in gathering pipelines, sewage treatment and reinjection pipelines with severe oilfield corrosion to extend the life of pipelines and provide guarantee for oil development and production, usually with small caliber and short distance. The first coating technology for the purpose of reducing drag and energy saving is applied for the first time in China's West-East Gas Pipeline Project.
3LPE anti-corrosion is an external anti-corrosion of pipeline. 3PE anti-corrosion steel pipe has extremely high sealing performance. Long-term operation can greatly save energy, reduce cost and protect the environment. Every link in anti-corrosion process should be tested according to the standard.
First : In the bare pipe, check the surface oil, steel pipe pits, delamination, weld shape and height, etc.
Second: After removing the rust, check the anchor depth (see the anchor pattern for a finer detail)
Third: 3LPE anti-corrosion after completion inspection: EDM leak detection, peel strength (60 ° C and room temperature), FBE thickness, overall thickness of the anti-corrosion layer; laboratory to do 30 days and 24 hours of cathode stripping, indentation strength, anti-bending , 1000 hours of water soaking, etc.
Fourth: The electric spark detector can be applied during the electric spark leak detection. This equipment adopts the principle of digital circuit control and pulse generation. The unique one-button switch automatically enters the charging state during charging. The digital circuit structure makes the indication value more stable and the detection of high-voltage pulses is more stable. The aluminum alloy casing makes the whole machine more beautiful and durable.
Fifth: If the pipeline is required to be protected, a heat shrinkable belt can be used.