Can instrument cable trays be installed on the ground inside the tank farm cofferdam?
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Can the instrument tray be laid along the ground surface? During the inspection by the experts last time, it was found to not comply with the standards; it needs to be buried. I’m not sure which regulations or standards specify this
Then why didn’t you ask where the regulations specify that it must be buried?
Being at ground level might not be appropriate... Being elevated is also an option
This post was last edited by bfdlwolf on 2019-8-15 14:06: “Design Code for Instrumentation, Piping and Lines in Petrochemical Industries” SH/T 3019-2016
This post was last edited by feng*aosa on 2019-7-13 at 20:55. Placing it directly on the ground is certainly not appropriate, and burying it is even less necessary. The cable tray should be installed in the air (no specific height requirement); it can be placed above or beside the process pipes, but it must be kept away from heat sources below and corrosion sources above. So it’s fine to walk along the side of the process pipeline.
No, the specifications require that the instrument tray be placed above the process pipes. If you place it below, won’t it be corroded by the leaking corrosive materials?
Oh. I made a mistake; the standard is the top and sides.
The company’s instrument tray is elevated in the tank area, but it is only 5 CM high. But the experts didn’t specify which particular standard needed to be changed
Does the specification require that the elevation of the tray be above the process pipes, or is it only trays that pass through the process pipes that are required to meet this requirement? Our cable trays do not pass through any pipes; those that do pass through are positioned above the process pipes. What I’m asking about are the cable trays that run around the tanks – they do not pass through any pipes, and they are suspended just 5 cm above the surface