Steam Line Underground
Steam Line Underground
(OP)
My Friends,
We have a 400psi steam line routed across a public road with 20ft clearance. We need 45ft of clearence to pass equipment underneath for a new project. Our E&C contractor wants to reroute it underground.
I have seen alot of lines routed below roads through culverts in the plant- i.e. piping can be easily trapped out and low spots accessed, the only real problem was pumping out rainwater, which we did via air lift pump in the plant.
Under this road the line would either be buried which I have never seen and might have its own problems; or through a culvert in which case I would worry about draining rainwater and restricting public access, etc.
Any ideas or advice?
best wishes,
sshep
We have a 400psi steam line routed across a public road with 20ft clearance. We need 45ft of clearence to pass equipment underneath for a new project. Our E&C contractor wants to reroute it underground.
I have seen alot of lines routed below roads through culverts in the plant- i.e. piping can be easily trapped out and low spots accessed, the only real problem was pumping out rainwater, which we did via air lift pump in the plant.
Under this road the line would either be buried which I have never seen and might have its own problems; or through a culvert in which case I would worry about draining rainwater and restricting public access, etc.
Any ideas or advice?
best wishes,
sshep





RE: Steam Line Underground
The buried part of the line can be insulated with "Gilsulate.
(see this link - http://www.gilsulate.com/Gilsulate_International,_...)
prognosis: Lead or Lag
RE: Steam Line Underground
if your conserned.. i would produce a risk assessment to document your decision process and recommendations..it does'nt need to be a complex document just explain how your managing that risk..
(then if anything goes wrong you have performed due dilanage.. ) make sure the operations own that risk too..
RE: Steam Line Underground
The process design details are actually of less concern to me than the worries about thermal expansion, anchoring, insulation and protecting, effect of heat on the soil, high water table concerns, etc. At least it is comforting to know that buried steam lines are an established practice, although I still struggle to find applicable standards.
best wishes always,
sshep
RE: Steam Line Underground
I still struggle to find applicable standards.
Contact "Gilsulate" http://www.gilsulate.com/Gilsulate_International,_..
prognosis: Lead or Lag