30 CFR § 75.1101-15 Construction of dry powder chemical systems.
(a) Each self-contained dry powder system shall be equipped with hose
or pipe lines which are no longer than necessary.
(b) Metal piping and/or hose between control valves and nozzles shall
have a minimum bursting pressure of 500 p.s.i.g.
(c) Hose shall be protected by wire braid or its equivalent.
(d) Nozzles and reservoirs shall be sufficient in number to provide
maximum protection to each belt, belt takeup, electrical controls, and gear
reducing unit.
(e) Each belt shall be protected on the top surface of both the top
and bottom belts and the bottom surface of the top belt.
