scope:

(a) Vessel wall thickness shall not exceed 1.2 in. (30 mm).

(b) Minimum metal design temperature (MDMT) shall not be colder than −320°F (−196°C).

(c) Maximum design temperature shall not exceed 120°F (50°C).

(d) Pressure vessels designed using the rules specified in this Case are limited to single diameter cylindrical shells with dished heads, spherical shells, and nozzles without reinforcing pad.

(e) The minimum specified ultimate tensile strength (UTS) of the weld filler metal used in construction shall not be less than the minimum specified UTS for the base metals of the weld joint.

(f) Nozzles and opening reinforcement components shall be designed using Section VIII, Division 1 rules, and applying the allowable stress values specified in Section II, Part D.

(g) The rules specified in this Case are applicable for vessels designed for internal pressure only, and shall not be used for vessels designed for external pressure.

(h) Nozzle size shall not exceed NPS 6 (DN 150).

(i) All Category A weld joints shall be Type No. 1. All Category B weld joints shall be Type No. 1 or Type No. 2.