Is swapping the \"8\"-shaped blind flange considered a special operation? Are there any relevant standards?
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Dear forum members, does replacing the \"8\"-shaped blind flange constitute a special type of work? Are there any relevant standards?
This post was last edited by Shutong on 2020-4-4 at 18:10. Plugging and unplugging blind flanges constitutes a special type of operation; the relevant standards are as follows: HG 30012-2013 Safety Regulations for Plugging and Unplugging Blind Flanges in Production Areas, AQ 3027-2008 Safety Regulations for Plugging and Unplugging Blind Flanges in Chemical Production Units, GB 30871-2014 Safety Regulations for Special Operations in Chemical Production Units
Blind plate removal and installation is one of the eight special operations specified in GB30871-2014.
It belongs to one of the eight special types of operations
As long as it is confirmed that the minimum-range isolation has been completed and that there are nearby drain pipes indicating that pressure relief has taken place, the risk is low.
Blind plate removal and installation among the eight high-risk operations
Many standards impose mandatory regulations on this type of special operation; just in case you don’t notice them, national standards, safety regulations, and industry guidelines all address this issue. Check out the eight types of special operations