Is pressure testing still required after the new equipment arrives at the factory?
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Are there any relevant standards specifying whether pressure testing and leak checking are required after installing a single piece of equipment has been updated?
Pressure testing should be carried out before installation, right?
Isn’t pressure testing done before leaving the factory? Is it still necessary to perform pressure testing after the equipment arrives at the site before installation?
It is necessary, as his airtightness and other aspects need to be checked after installation
It can be pressure-tested together with the system.
You’re not referring to the same thing; what’s being tested is the airtightness of the system
It’s not possible anymore. Even if the design pressure of the equipment pipelines is the same. However, according to the standards, the test pressure and test time are different
After installation, the equipment and pipelines need to be press-tested again, especially the assembled equipment
In my understanding, pressure testing a single device essentially involves strength testing and leakage testing. Since the strength testing has already been carried out by the manufacturer, there is no need to repeat it. If pressure testing is to be done, it should be the leakage testing. But is it necessary to conduct such testing when the design does not require any air-tightness checks? Should it be the design pressure as well, if necessary? ? ? Or should pressure testing be carried out using other types of pressure? What is the purpose again?