How long does a steel tank usually retain its + rating in hydro?

[grantmac]

I will have to look at my TC marked tanks, LPs aren't as common up north.

 

[Tracy]

Not exactly. TC doesn't have pluses in their stamped pressures nowadays. Dual rated DOT and TC tanks will have psi and a + as well as a metric service pressure with no plus. They are the same pressure though.

You are correct, I forgot they changed their service pressure to match the fill pressure.
So much sense, so much easier.

 

[rjack321]

I will have to look at my TC marked tanks, LPs aren't as common up north.

I see Faber 85s and 95s up there fairly often. And 72s even - but no pluses, and not even TC ratings on those. They are getting Canadian hydros somehow, although it's beyond my understanding of TC regs how that works.

For the record, it's basically impossible to get a plus on a lp72, any of the faber MP 3000psi+ rated tanks (mostly MP72s which look like HP80s), or any of the PST LP series tanks here either - since the REE is almost always missing from those tanks/eras.