- (a) Unfired pressure vessels are any pressure vessel constructed for the accumulation, storage, or transportation of air, liquids, or gases that are under induced pressure.
(b) All vessels shall have the following:
- (1) The official code symbol;
- (2) Name of the manufacturer of the pressure vessel, preceded by the words “Certified by”;
- (3) Maximum allowable working pressure ___psi at ___° F;
- (4) Minimum design metal temperature ___° F at ___ psi;
- (5) Manufacturer’s serial number ____________; and
- (6) Year built _____.
- (c) The manufacturer’s nameplate shall not be permanently covered with any insulating or other material but shall be readily accessible at all times.