Issues regarding crack repair in storage tanks
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Happy New Year to everyone! There is a atmospheric pressure storage tank (60 cubic meters) that was damaged on its straight edges during the spinning process of its head; cracks appeared after it was in use for half a year. Since it contains DMF, what is the best way to repair it without welding? I hope everyone can offer some suggestions. Thank you! ! ! !
Personal opinion: If tanks are to be purchased from a certain pressure vessel manufacturer, it is necessary to send a letter immediately requesting that the company assign qualified welders to carry out repairs in accordance with the relevant repair procedures, and to conduct Rt testing as well. It’s really unclear what other methods exist to eliminate safety hazards without using welding for repairs.
Cracks in atmospheric pressure storage tanks can be repaired by riveting and pressing them together before applying epoxy resin adhesive.
Polymer cold welding technology for repair and structural reinforcement. It can be done without using fire. However, it also depends on the specific operating conditions, such as the size of the cracks and the properties of the material; it’s best to have photos and descriptions available.
Mainly consider potential safety hazards in the future
It’s best to send a picture. It should be stress concentration (spin forming), along with the heat-affected zone of the weld, which causes stress cracking. Epoxy resin + glass fiber cloth can be used
I fixed it with A/B glue; it’s not leaking for now, but it’s not a permanent solution. I’ve now bought metal sealant imported from Germany to fix it again.