Transporting Liquid Carbon Dioxide By Rail: Contents Usually Cryogenic Or At Ambient?

[crshears]

First post in railroad equipment engineering forum...

My interest in rr's has been revived since I started volunteering aboard the retired / legacy steam ship SS Keewatin [www.sskeewatin.com], formerly an asset of the Great Lakes Steamship Service of the Canadian Pacific Railway...

Question: for transportation by rail in North America, is liquid CO2 usually shipped cryogenically in insulated tankers so the pressure rating of the tank needn't be as high, or at ambient temperature and higher pressure so there will be less net loss en route due to expansion & blow-off?

For answers to the above, what reasoning is applied and/or what regulations prevail to dictate doing this one way or the other? Internet search results have proven less than stellar...

Thanks!

CR

"As iron sharpens iron, so one person sharpens another." [Proverbs 27:17, NIV]

 

[dhengr]

Crshears:
Check with the Mech. Dept., an engineer who knows tank cars and transport of those types of commodities, not some phone answering clerk, of your local/serving your plant RR or CPRR since you might have a connection there. Check with the AAR (Association of American Railroad), FRA (Federal Railroad Administration), official outfits like those. They will know what the rules and regs. are for shipping CO2 by rail, and what type of equipment can be used, or under what conditions they will haul it. You might also contact some tank car manuf’ers. and see what kind of equip. they have available, and what they know about the matter.

 

[crshears]

Thanks for the response and the suggestions, dhengr; have already done some of those, but not all.

CR

"As iron sharpens iron, so one person sharpens another." [Proverbs 27:17, NIV]