PVC Piping for #2 Fuel Oil Transfer
PVC Piping for #2 Fuel Oil Transfer
(OP)
Is it acceptable to install PVC piping (3"nom. sch 80; ASTM D1785; NSF-PW 907599 C18) to transfer #2 fuel oil from an outside AST. This piping is a short segment between a newly installed tank and existing steel piping that runs thru the plant to boiler room.





RE: PVC Piping for #2 Fuel Oil Transfer
Personally I wouldn't use it for any flammable or critical service and as you state this is a boiler fuel line it is definately a no,no, IMHO. I can't see any savings by using PVC over carbon steel in this case.
Before you go any further check the compatibility of #2 with PVC and at the same time check with your local jurisdiction and your insurance carrier.
RE: PVC Piping for #2 Fuel Oil Transfer
I think that NFPA-30 talks about the use of plastic tanks and piping systems......
and I believe that unclesyd's comments are correct.
You have very little savings over good old schedule 40 CS pipe..
-MJC
RE: PVC Piping for #2 Fuel Oil Transfer
RE: PVC Piping for #2 Fuel Oil Transfer
While there has no doubt been more research particularly in the evolving areas of fracture mechanics etc., and maybe even some at least subtle improvements in available pipe manufacture and Q.C. etc. since that time, I'm not sure that the basic nature and utility/concerns of unplasticized pvc pipe material have really changed much since then.
RE: PVC Piping for #2 Fuel Oil Transfer
The segment of PVC piping would be under suction and outside elevated about 15' above ground where no traffic except pedestrian would exist.
I'll remind plant personnel to think about steel piping instead.
RE: PVC Piping for #2 Fuel Oil Transfer
In a link provided by John Breen on another thread there is a discussion on changes to the B31.3 pipe code for 2004. You might want to look at that as well as NFPA 30 as you stated above.
h
Thermoplastics in Flammable Fluid Service
Thermoplastics are now permitted in above ground flammable fluid service, provided all of the following are satisfied.
1. The size of the piping does not exceed DN 25 (NPS 1)
2. Owner's approval is obtained.
3. Safeguarding per Appendix G is provided.
4. The precautions of Appendix F, para. F 323.1 (a) through F 323.1(c ) are considered.
RE: PVC Piping for #2 Fuel Oil Transfer