NO Haz mat endorsement on CDL when hauling Nitrogen ?

Be more specific. a Dewars bottle of liqiid N2 could be considered under 'materials of trade'...

 

I call bahookey.
Nitrogen is class 2 hazmat, whether it’s in cylinders or bulk trailer compressed or liquid.
You need the hazmat endorsement to pull it.
And tank if it’s bulk.
I promise you don’t want to get caught pulling it without.
You’ll have more DOT attention in one day than anyone should have in a lifetime.
Be safe out there.

 

I've hauled liquid O2, nitrogen,argon and CO2 along with compressed gases in tube trailers and cylinders.
As far as I know you have to have a Hazmat endorsement to haul any amount of hazardous materials.

 

You would be wrong on that.
It depends on the class. Some are 1,000 lbs or more for example.

 

I thought that was the amount that requires placards.

 

Basically if it doesn't require placards it doesn't require a hazmat endorsement. That's not 100% universal I think, but generally speaking.

 

May also depend on the size of the containers....

Ex: 5300 gallons of 120 proof alcohol. In a tanker requires hazmat and placards, but in 53 gallon casks in a van or reefer no hazmat or placards required.

 

If the tanks have labels or placards then the drivers should have the endorsement.

Also, I can't imagine why an oilfield services company would hire somebody who doesn't have the endorsement in the first place. It really limits what you can do.