Chemical Fill Truck - Standard connection size?

[RVAChemE]

Hello,

I'm working on a chemical storage system for a water treatment plant and one of the areas in our scope is providing a fill point in the building for trucks to connect to refill chemical storage tanks. Are there any standards regarding the connection size that would be used here? I'm assuming the connection would be some kind of cam-lock/cam and groove connection.

If it matters, we are dealing with working volumes varying from 5,000 to 15,000 gallons. Chemicals are ferric chloride, sodium hypochlorite and sulfuric acid.

Thanks in advance!

 

[IFRs]

Depends on your required flow rates. Check loading arms, rail cars, transport trucks, propane trucks, etc.

 

[bimr]

There are standard connections, but there is no universal connection for all of the various chemical suppliers. You will need to contact the existing or future supplier of the chemical and get the connection information directly from him.

Attached is a document from one sodium hypochlorite supplier that outlines the pipe sizes. .

 

[LittleInch]

Initially you're probably best off just providing a 3" or 4" flanged valve at the outlet with some space which allows you to attach a spool piece with the required connection or allow the supply company to fit their own connection.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[RVAChemE]

Thanks for the responses everybody! It's much appreciated.

Providing a flanged valve makes sense as a generic solution - it's hard to predict which company will be providing chemicals at this plant as we are not the end user, but I'll try. Everywhere I'm seeing shows 2" to 3" as a typical solution and I see no harm in going with 3" here. Any typical liquid velocity that pumping would take place at?

Also, are there any other typical provisions for the filling station with non-volatile chemicals like this? I know with some chemicals the truck tank pressure is equalized with inert gas (nitrogen or regular air) as the liquid is pumped into holding tanks. If regular air is used then I would imagine the tanker would have an on-board air supply and no connection to service air would be required from the plant?

 

[bimr]

Velocity of 3-9 ft/sec is adequate.

Don't believe any air supply is necessary. The tanks should be vented to the atmosphere.

You should also have a safety shower and spill containment to prevent a spill from moving offsite.