Issues with starting up the gas system
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After the maintenance of the gas handling equipment is completed and preparations are made to start up the system, once the pressure testing with air is finished, can liquefied gas be used to displace the air so that the startup process can proceed? Thank you; those who know the answer please share it
After the maintenance of the gas system, it is feasible to use liquefied gas to displace air, but it is necessary to ensure the safety of the operation. First, it is necessary to ensure that the pressure and temperature inside the device are within safe limits; secondly, a gradual replacement process should be carried out to prevent the mixture of air and liquefied gas from reaching its explosive limit. It is recommended to carry out this under the guidance of professionals to ensure the safety of the process. .
It is best to use a gas that does not react chemically with liquefied gas for displacement, in order to avoid accidents, such as nitrogen. It’s now quite convenient to have liquid nitrogen vaporized on-site, and the price isn’t very high either; this is for reference only.
The risk is too high; using nitrogen to displace air won’t take very long either