/sci/ - Science & Math

How long can a person safely rebreath the same 8 cubic feet of air?

/sci/

I'm attempting to design a hypothetical suit that would protect the wearer from close proximity to a steam explosion, in addition to high radiant heat for prolonged periods. The steam would be at 125psi and 350F in pipes, although in the event of direct steam exposure the pressure would have to have dropped a lot due to pipe rupture.

I'm imaging something along the lines of NOMEX coveralls and hood for conductive heat protection with an out aluminized mylar shell as a vapor barrier and radiant heat shield. The suit would have an "escape SCBA" in the event of pressurized steam exposure, which would buy the user enough time to escape from the source.

The visor would probably be something along the lines of a cellulose-acetate faceshield with regular mirror tint window film applied for low emissivity.

The general configuration would be similar to a fire prox suit (pictured)

Any more brainstorming on this?