LPG piping code
LPG piping code
(OP)
dear forum,
i have confusion about LPG pipelines design. we usually deals with gas standard 31.8.
my question is which ASME code shall we use to design LPG pipeline? if we consider the liquid standards, LPG can go to gas phase easily if its not stable during the transportation.
best,
i have confusion about LPG pipelines design. we usually deals with gas standard 31.8.
my question is which ASME code shall we use to design LPG pipeline? if we consider the liquid standards, LPG can go to gas phase easily if its not stable during the transportation.
best,





RE: LPG piping code
You might be better to use something like ISO 13623 which doesn't differentiate.
A code like BS PD 8010 provides guidance with respect to separation distances and population density for LPG to deal with the intense vaporisation of cold gas if there is a leak or rupture.
You need to look at a decent QRA which addressee these issues if you're going near any population.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: LPG piping code
RE: LPG piping code
I actually converted our ethylene line in question above from gas codes 31.8 to 31.4 liquid. The liquid codes require more stringent naintenance, but so what, we had a propylene line 1 foot away, so no increased monitoring. But the 31.8 is more stringent on the design.
To me, the iso standards are over specifications and no room for risk reward analysis. They over complicate to appease the EU, not the science.
RE: LPG piping code
The key in your response is that the fluid changes when it is released. This needs to be considered properly in terms of public safety and routing/protection but in terms of design or normal operation works much more like a liquid than a gas (e.g. surge pressures)
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.