THansen
Member
- Location
- Durham, NC
Hi all -
Seeing if any of you have encountered this type of operational need before. We have a chemical process pilot plant that is classified as C1D2 due to presence of H2 and CO in the system at high temp and pressure. There are several electrical panels that are within the boundary of the C1D2 area for I/O and DCS system. All panels are purged. However, the facility has been encountering significant issues with fuse and card failure for which troubleshooting and replacement requires opening the purged panel. There is a consideration for working on the panels (which requires opening them, obviously) while system is operational and panels are energized to allow for troubleshooting. Interpretations have ranged from 'no way this is ok' to 'using gas monitors and hot work permit process for temporary work is ok'.
Anyone have experience in this type of operation or thoughts?
Seeing if any of you have encountered this type of operational need before. We have a chemical process pilot plant that is classified as C1D2 due to presence of H2 and CO in the system at high temp and pressure. There are several electrical panels that are within the boundary of the C1D2 area for I/O and DCS system. All panels are purged. However, the facility has been encountering significant issues with fuse and card failure for which troubleshooting and replacement requires opening the purged panel. There is a consideration for working on the panels (which requires opening them, obviously) while system is operational and panels are energized to allow for troubleshooting. Interpretations have ranged from 'no way this is ok' to 'using gas monitors and hot work permit process for temporary work is ok'.
Anyone have experience in this type of operation or thoughts?