Furnace Oil Piping

What is the diameter of the line, Uncle?

Here is a link for your help.

This pipe line may be sized within the range of NPS 2 up to 6, therefore it is better to use a seamless piping system.

I agree with Abdel, go with seamless as you do not want joints underground (they will eventually leak). Do not use polyethylene or its cousins, as the material will leak out the walls over time. I would also avoid using any Fe-based metal as it will corrode over time and the piping will need to be replaced. Although a bit spendy, copper should do fine as long as you have the copper isolated against galvanic reaction.

I am surprised at this comment. In over 20 yrs I have never seen a copper line in this service. Steel pipes do corrode (you only need carbon steel for this service) but properly designed you make allowance for the loss of wall thickness due to corrosion over the life of teh user. ie if you need a wall thickness of 5mm based on pressure calculations and the corrosion estimate is 0.1mm/yr you need a minimum of 7mm wall thickness.

Copper is very rarely used on oil and gas facilities for utility or process systems. Off the top of my head you use it in instrument air fittings but only the last few cm's at the user. A simple Carbon steel line will be far more robust and although you will need to make allowance for the corrosion this is standard practice and acrbon steel pipe is widely available and cheap

500 m length, India - No problem except end January-end February winter nights will become nightmares.The Cost pipelines + electrical heat tracing + power to pumps will all add up to the cost of HFO to generate steam. Already HFO Vs Gas is 60% + higher/T steam. This will increase your cost production.

I will suggest that you make a pit 6ft x 6 ft x 6 ft near the Boiler House, fit a Ms De-canting Tank with electrical heater . Install a small 1 Hp gear-pump x 2 sets to transfer HFO from this De-canting tank to your Day-oil tank with transper pipes electrical/steam heat traced & insulated . Have a small Tanker on wheels (or the type selling kerosene to slump areas and donkey-driven, common in India/Pakistan) to transfer HFO from Tank farm to the De-canting tank. Simple system-no nightmares!

ERW Pipe - IS - 1239 CLASS C is the most economical, safe and approved for this application.

The temperatures are not very high, may be around 50-60 degree C.

For all types of Fuel lines, IS - 1239 Class C pipe is fine.

I would agree w/the others that seamless would be best if possible. I would also advocate using a double wall system like enviro-flex or something similar. I would be curious to know if you have to pump or can siphon. Controlling the flow can be a delicate problem. Simple is usually better. If you have to pump from the lower end you might consider a mechanical stop as well as a telemetry/level system for safety.

I have read the ASME B 31.1 but it is not mentioned specifically about pipeline for furnace oil.

Furnace oil is reticulated andmanaged the same as fuel oil for any other purpose. Don't expect to find specific reference to furnaces. Follow the directives for fuel oil.

Customise it in accordance with the relevant industry standards to suit your application/environment.