Vacuum Truck and NGL Tanker Trucks
Vacuum Truck and NGL Tanker Trucks
(OP)
I have a couple of questions. First, for vacuum trucks; can they vac out class 1 flammable liquids? I would imagine they have some code about not vac'ing very flammable liquids.
Second question is about tanker cars; what design pressure do they typically have? Also, what carbon number cut off would there be from going to a NGL truck and just a typical fuel haul truck? Propane and higher use NGL trucks? What would be the design pressure of the typical fuel haul truck?
Thanks!
Second question is about tanker cars; what design pressure do they typically have? Also, what carbon number cut off would there be from going to a NGL truck and just a typical fuel haul truck? Propane and higher use NGL trucks? What would be the design pressure of the typical fuel haul truck?
Thanks!





RE: Vacuum Truck and NGL Tanker Trucks
Depending upon the type of vacuum pump there may be some ignition hazzards. If it is a lobe type pump or a fan then the chance of dangerous sparks would be likely be reduced. It has been 5 or more years since I built and vacuum trucks so things may have changed recently.
Propane and NGL are typically around 150 PSI. I believe these are the MC/DOT/TC 331 tanks (road). I was not involved in the manufacture of any of these. A fuel truck (MC306/DOT406/TC406) is usually an atmospheric non-circular tank with a 3 to 5 kpa design pressure.
ASME has written a section XII to address many of these tanks as well as portable tanks. I do not belive it is anywhere close to being adopted by regulation anywhere but it is based upon what many manufacturers used for design for the last 50 or so years.
EJL
RE: Vacuum Truck and NGL Tanker Trucks
RE: Vacuum Truck and NGL Tanker Trucks
EJL