Do highly hazardous media require heat treatment?
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Do highly hazardous media require heat treatment? In the new version 150, only extremely hazardous media are required to undergo such treatment; can highly hazardous media be exempted from this requirement?
According to the provisions of GB 150-2011 (2018 edition), heat treatment is required only for pressure components handling extremely hazardous media； For pressurized components handling highly hazardous media, there is no mandatory requirement for heat treatment. Therefore, for highly hazardous media, it can be decided whether heat treatment is necessary based on specific design standards and process conditions, but the regulations do not require heat treatment as a mandatory step. In practical engineering, it is recommended to determine whether heat treatment should be carried out by considering comprehensive risk assessment, medium properties, and equipment operating conditions. .
The 2016 version of the code does not include highly hazardous media, while the 2024 version aligns with the code regarding 150. For non-alloy and alloy steel vessels, post-weld heat treatment may be omitted when handling highly hazardous media.
According to GB/T150.4-2024, containers holding highly hazardous media do not require stress-relief heat treatment.
In practice, when dealing with highly hazardous media, do you still carry out heat treatment?
In this case, do you require a heating treatment?
With **standard support, heat treatment is not necessary.