HP tanks and Nitrox

[wazza]

Its true Pescador, but where I come from when we fill Nitrox we put the o2 first in the tank then we add Air, so in that case the tank should be o2 clean .
Anyway its better for Ari to ask what way they are felling the Nitrox, only to be in the safe side, and to tell the compressor Boy that the tank is not o2 clean .

 

[pescador775]

Understand, Wazza. I thought that might be the case but I didn't want others to get the wrong impression. In the US, there is a bulletin (decal) glued to the tank which says 'Oxygen clean' or something similar. Shop 'monkeys' know to look for this when filling oxygen.

Simon has a point about the gas behavior at VHP. Probably would throw off the final gas ratios by a little bit unless the compression factors for individual gases were used in the calculation.