Is it necessary to inform when replacing the core of a heat exchanger?
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Seeking advice: Is it necessary to inform the special inspection authority when replacing the core of a heat exchanger (U-tube or floating head type)? Additionally, is it necessary to inform the special inspection authority when replacing or welding shut heat exchange tubes on-site? Thank you all, experts.
Major repairs or modifications to pressure vessels need to be reported to the Quality Supervision Bureau, not the Special Inspection Institute. “Major repairs to pressure vessels refer to the replacement, reshaping, or patching of the main pressure-bearing components, as well as the welding repair of butt joints in accordance with the provisions of Article 50 of these regulations. Major modifications to pressure vessels refer to the replacement, addition or removal of the main pressure-bearing components, as well as other changes, or alterations in the operating parameters of the pressure vessel, the medium it contains, or its purpose. ” I hope this can help you.
The heat exchanger tube bundle is considered a pressure-bearing component, and notification is required
Haiyou, what do you think is the reason for not providing that information?
For off-spec heat exchangers (specifically those not regulated by standards), if the manufacturer is not required to assume warranty responsibility, the owner can handle them on their own. For example, in the compressor industry, lubricant coolers of the AEW or BEW type are used; the heat transfer medium is lubricant, while the cold side uses industrial circulating cooling water. The design pressure is below 10 barg, and the design temperature does not exceed 80°C. The client orders the equipment along with spare tube bundles, which are replaced and cleaned on a regular basis.
Major repairs or modifications to pressure vessels require that \"major repairs to pressure vessels refer to the replacement, reshaping, or patching of the main pressure-bearing components, as well as the welding repair of butt joints in accordance with the provisions of Article 50 of these regulations.\" Major modifications to pressure vessels refer to the replacement, addition or removal of the main pressure-bearing components, as well as other changes, or alterations in the operating parameters of the pressure vessel, the medium it contains, or its purpose. It needs to be informed