Lethal Service Code Cases

ASME Section VIII, Division 1 Code Cases referring to lethal service:

1750-20(g): ASTM A126 (gray iron castings) not allowed for pressure relief valves and rupture disks.

2321: Exemption From Postweld Heat Treatment for P-No. 4 or P-No. 5A Tube-to-Tubesheet Seal Welds.

2324: Automated Ultrasound Leak Detection System in Lieu of Visual Inspections Required by UG-100(d).

2334: Single Fillet Lap Joints in the Shell of a Shell-and-Tube Heat Exchanger.

2346 & 2537: Rules for Ellipsoidal or Torispherical Heads Having Integral Backing Strip Attached to Shells.

2369: Rules for Pressure Testing Vessels Utilizing a Bolted Flat Blind Flange as Removable or Remote End Closures.

2377: Radiographic Requirements for SA-612 Steel Plate.

2421: Single Fillet Lap Joint for Heat Exchanger Tube Welds.

2437: Rules for Diffusion Bonded, Flat Plate, Microchannel Heat Exchanger.

2527: Pneumatic Testing of Pressure Vessels, U-1(j), UM Vessels.

2621: Diffusion Bonding.