Why does equipment that has undergone a leak test still leak?
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The company has 1 boiler feedwater preheater, which was tested for airtightness before leaving the factory; why then does leakage still occur after it is put into use at the site? (A helium leak test is performed before leaving the factory)
Sealing failure can be caused by impacts during transportation, as well as the stretching and loosening of fasteners on the sealing surfaces
Manufacturers generally produce products at room temperature, depending on the operating conditions.
The gasket is a weldable gasket
Different operating conditions can have such an effect on ordinary gaskets, but the gasket used for this equipment is a weldable basin gasket @!
It might be due to different operating conditions, or it could have been damaged during transportation
Leakage at the tube sheet location, at the weld joint with the tubes
It has been determined that there is a leakage at the junction of the pipe and the tube sheet. . .
No need, it’s already been found out. Thank you.