Does the customer require the ASME vessel to undergo a pressure test at 1.2 times the pressure?
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There is an overseas project involving ASME vessels, and the client requires that the vessels be subjected to a pressure test at 1.2 times the normal pressure. Is it possible to do this?
This post was last edited by Pinocchio on 2016-9-8 at 13:31. Users should specify their design requirements before the device is designed. If the equipment has already been manufactured and was not designed for a pressure test at 1.2 times the working pressure, the user may not change the testing method or the test pressure without the consent of the design team. If the device has not yet been designed, users can propose design conditions that exceed the regulatory requirements; the regulations only specify the minimum test pressure for the pressure resistance test. If the device is installed abroad, it must comply with the relevant regulatory requirements of the location of installation.
Thank you, we haven’t started the design yet; it’s only in the technical phase after winning the bid
I think it’s possible; the ASME test pressure is calculated as 1.1 times the LSR value, and as long as that is met, it’s fine. Personally, I believe it’s necessary to first determine whether the standard requires hydrostatic or pneumatic testing. If the standard calls for hydrostatic testing but the customer requests pneumatic testing, then it’s important to check whether the conditions specified in UG-100 for using pneumatic pressure instead of hydrostatic pressure are satisfied. If so, there’s no problem with changing the test pressure to 1.2
Thank you. Our containers are subjected to a 1.5-fold hydrostatic pressure test individually, and after they are assembled into a skid, the customer requires that the entire skid undergo a pneumatic pressure test at 1.2 times the design pressure.
The buyer wants to ask for a higher price. . . There’s no problem with that. . But safety measures must be taken. . . Run far away
The customer needs to bring this requirement to you from the start, and then an assessment is required
Use the experimental pressure specified in the standard corresponding to the design standard used; mixing them is not allowed. For example: if it is designed according to ASME, then the experimental pressure from ASME should be used. If you design it using GB150, then use the test pressure specified in GB150. There is no good or bad!
No problem, as long as there are sufficient reasons
Users may request standards that are higher than those specified; any issues related to design calculations need to be raised prior to the design phase.
If it is in the design phase, pressure test values can be entered to conduct reverse calculation and verification.