As we stated before, there might be some scenarios in pipeline engineering where hydro static test can not be carried out. As a venture specializing in R&D, manufacturing and sales of pipe design sustaining products, We Group has professional alternatives for managing some unique situations. For the situation where the hydro static test can not be executed, We shares some alternative approaches (taking GB/T20801 as an example).
Technique 1: replace the hydraulic test with the pneumatic examination. Nonetheless, it needs to be kept in mind that the pneumatic examination is very harmful since it is tough to quickly launch the power in case of pipeline rupture after pressurization.
Technique 2: The hydraulic– pneumatic joint examination is made use of rather. This approach has fast stress surge as well as high efficiency. During the examination, a safety and security relief gadget is needed. The gas used for the test shall be air or various other non-toxic and non combustible gas, as well as the pressure of the fluid filled part of the pipeline shall not surpass the stress of the hydro static test.
Approach 3: replace with first operation. For the initial GC3 pipeline, according to GB/T20801, with the permission of the owner or the designer, it can be combined with the appointing, as well as the pressure examination can be accomplished with the fluid transported by the pipe. Throughout or prior to the preliminary operation of the pipe, the stress will be progressively enhanced to the operating stress by phases, and each phase shall have sufficient pressure holding time to balance the pipe pressure. If the fluid being delivered is gas or steam, a pre-test shall be accomplished. This is really extremely beneficial.
Method 4: replace with 100% nondestructive screening. According to the stipulations of different specifications, 100% nondestructive screening can be utilized as opposed to hydro fixed screening if the requirements are fulfilled.
We Group concentrates on the manufacturing of pipeline engineering sustaining products, consisting of flanges, steel pipelines, pipe installations, elbows, tees, and so on. With innovative production equipment and also skilled production technology group, We Group sustains non-standard product modification as well as prefabrication. We has abundant experience in task participation, and also can perform various top quality evaluations according to the requirements of the job. You can accept us with self-confidence.
As we stated before, there may be some scenarios in pipeline engineering where hydro static test can not be carried out. For the circumstance where the hydro static test can not be brought out, We shares some alternate methods (taking GB/T20801 as an instance).
The gas used for the test shall be air or other non-toxic and also non flammable gas, and also the stress of the fluid loaded component of the pipe shall not surpass the stress of the hydro static test.
For the original GC3 pipeline, according to GB/T20801, with the consent of the owner or the designer, it can be incorporated with the commissioning, and also the stress test can be lugged out with the fluid carried by the pipeline.
