What makes a tanker food grade?

wis bang · Apr 16, 2022

Redtwin said: ↑

I suppose it depends on the chemical, or what one defines as a chemical. Technically, water is a chemical even though we may not think of it as such.

We haul placarded hazmat chemical in our food grade tanks, but those chemicals are derived from edible products (final product definitely isn't though) so maybe that gets a pass.
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Phosphoric acid, class 8 DOT412 tank Spec; check your soda can label.

wis bang · Apr 16, 2022

david123abc said: ↑

I’ve heard there was some 20/20 show years ago that did a story about the tanker business. Basically followed them around showing guys delivering chemicals then loading food products like orange juice on the same tank, using the same hoses, etc. Apparently there was quite an uproar which led to the separation we see now where tanks run either food grade products or chemicals but rarely if ever in the same equipment. I’m not sure if a.) there’s actually any truth to it because I’ve never seen the show myself and b.) whether there is actually some legislation that dictates a separation between the two, or if it’s just an industry standard thing.

That said, you typically see these types of trailers in food grade service.
Walker | Food Grade Tank Trailers

Whereas with chemical trailers you typically see standard dot407 tanks like this:
Brenner | Chemical Stainless Tank Trailers

I’m not familiar enough all the intricacies of design/construction to tell you what makes them different from one another other than 407 tanks are able to haul hazmat.

There are certainly exceptions to the rule as well, which have probably been explained in the replies above me.
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Walker also makes DOT spec chemical tankwagons

Redtwin · Apr 17, 2022

wis bang said: ↑

Phosphoric acid, class 8 DOT412 tank Spec; check your soda can label.
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The aluminum the can is made of is probably safer to ingest than that acid.

wis bang · Apr 17, 2022

Redtwin said: ↑

The aluminum the can is made of is probably safer to ingest than that acid.
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BUT...BUT...It's a PRESERTATIVE ! ! !

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