Rigging off of Pressure Piping
Rigging off of Pressure Piping
(OP)
Hi all,
We always have problems with our mechanics rigging off of system piping to help remove equipment. We tell them if they want to do this they should contact design engineering to do a pipe stress analysis first. This prompts them to rather look for another rigging point or tooling.
However, sometimes it is the only way. I have seen procedures where you must first drain the pipe, check hanger spacing and loads, etc.
Anyone heard or seen procedures on this or code rulings that this must not be done ?
Thanks
We always have problems with our mechanics rigging off of system piping to help remove equipment. We tell them if they want to do this they should contact design engineering to do a pipe stress analysis first. This prompts them to rather look for another rigging point or tooling.
However, sometimes it is the only way. I have seen procedures where you must first drain the pipe, check hanger spacing and loads, etc.
Anyone heard or seen procedures on this or code rulings that this must not be done ?
Thanks





RE: Rigging off of Pressure Piping
In most plants, it's unlikely that this practice will stop. You just have to allow for it by installing the hangers closer together, and/or doing things like going to pipe with a heavier wall in locations where people are probably going to hang their chainfalls from it.
RE: Rigging off of Pressure Piping
If you told a labor inspector and pressure vessel regulator of the goings on they would flip.