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Best Pipe Material For Saltwater Service

Best Pipe Material For Saltwater Service

Best Pipe Material For Saltwater Service

(OP)
Looking for the best (life vs cost) pipe material to use to pump saltwater to salt dome storage caverns.

RE: Best Pipe Material For Saltwater Service

Is salt water deaerated? What is the temperature?

RE: Best Pipe Material For Saltwater Service

(OP)
The salt water is deareated and at ambient temperature. The saltwater is stored in a pond and then pumped to a salt dome cavern. The saltwater is pressured back to the pond when filling the cavern.

RE: Best Pipe Material For Saltwater Service

If the pressure is less than 150 psi, I would strongly consider FRP (epoxy, or vinyl ester) with butt and strap or mechanical joints (no socket/ adhesive bonded)

RE: Best Pipe Material For Saltwater Service

Low pressure, nominal temp., medium sized, I agree, use FRP.  As much as I like metals they will be much more expensive and not give you a real advantage in this case.

= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm

RE: Best Pipe Material For Saltwater Service

Tell us the pressure and the diameter of pipes for real replies, but your best choice will certainly be plastic, either HDPE  or ABS. I know of a salt mine who has many many miles of hdpe pipework for both underground transmission of supersaturated brine/mineral slurry  and also for general use in a treatment plant.Cheers  

RE: Best Pipe Material For Saltwater Service

(OP)
The maximum pressure on the saltwater system is 100 psig. Piping sizes range from 6" to 12".  Some of the piping will be new installation but the majority will be used to replace sections of carbon steel piping that begin leaking.

RE: Best Pipe Material For Saltwater Service

Rubber lined, polyethylene lined and concrete lined carbon steel pipe and FRP pipe have been used in this exact service. As costs vary with time, you should have your Purchasing department determine lowest costs today. We had a major problem with PE lined pipe, specified by the Corp., and I cannot recommend its use.    

RE: Best Pipe Material For Saltwater Service

PE lined pipe is very different from pe pipe.  any temperature variation  creates high stresses where the lining is flared out at flanges, eventually causing failures.
Gibralter has very limited fresh water supplies and the entire island has two separate water distribution systems.
 Firstly a fresh water supply for essential reasons.  
 Secondly, a seawater supply for  where it is acceptable, such as toilet flushing, etc.
I wonder if any forum member knows what material is used.
Tomorrow I will research further. cheers dw

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