SECTION VIII, Division 1 – PRESSURE VESSELS U, UM, UV, UD and PRT Certificates

(U) Pressure Vessels (Div. 1)

Pressure Vessels (Div. 1)

U-1 Manufacture of pressure vessels at the above location only

U-2 Manufacture of pressure vessels at the above location only (This authorization includes mass produced pressure vessels)

 U-3 Manufacture of pressure vessels at the above location only (This authorization does not cover welding, brazing or fusing)

 U-4 Manufacture of pressure vessels at the above location and field sites controlled by the above location (This authorization does not cover impregnated graphite)

 U-5 Manufacture of pressure vessels at the above location and field sites controlled by the above location (This authorization does not cover welding, brazing or fusing)

 U-6 Manufacture of pressure vessels at field sites controlled by the above location

 U-8 Manufacture of pressure vessels (cast iron only) at the above location only

 U-9 Manufacture of pressure vessels at the above location and field sites controlled by the above location (This authorization includes mass produced pressure vessels at the above location only)

 U-10 Manufacture of pressure vessels (cast iron only) at the above location and field sites controlled by the above location. (This authorization does not cover welding, brazing or fusing)

 U-11 Manufacture of pressure vessel parts at the above location only

 U-12 Manufacture of pressure vessel parts at the above location and field sites controlled by the above location

 U-14 Manufacture of pressure vessel parts (cast iron only) at the above location only

 U-15 Manufacture of pressure vessels (cast iron only) at the above location only (This authorization does not cover welding, brazing or fusing)

 U-16 Manufacture of pressure vessels at the above location only (This authorization includes impregnated graphite pressure vessels)

 U-18 Manufacture of pressure vessels at the above location and field sites controlled by the above location (This authorization includes impregnated graphite at the above location only)

 U-19 Manufacture of pressure vessels (cast iron and aluminum-alloy castings, only) at the above location only (This authorization does not cover welding, brazing or fusing)

 U-20 Manufacture of pressure vessels at the above location and field sites controlled by the above location (This authorization includes impregnated graphite at the above location and field sites controlled by the above location)

(UM) Miniature Pressure Vessels

Miniature Pressure Vessels

UM-1 Manufacture of miniature pressure vessels at the above location only

 UM-2 Manufacture of miniature pressure vessels at the above location only (This authorization does not cover welding, brazing or fusing)

 UM-3 Manufacture of miniature pressure vessels (cast iron only) at the above location only

 UM-4 Manufacture of miniature pressure vessels at the above location and field sites controlled by the above location

 UM-5 Manufacture of miniature pressure vessels (cast iron and aluminum-alloy casting only) at the above location only (This authorization does not cover welding, brazing or fusing)

(UV) Pressure Vessel Pressure Relief Valves (Div. 1 and Div. 2)

Pressure Vessel Pressure Relief Valves (Div. 1 and Div. 2) 

UV-1 Manufacture of pressure vessel pressure relief valves at the above location only

 UV-2 Manufacture of pressure vessel pressure relief valves at the above location only (This authorization does not cover welding, brazing or fusing)

 UV-3 Assembly of pressure vessel pressure relief valves at the above location only (This authorization does not cover welding, brazing or fusing)

 UV-4 Manufacture of pressure vessel pressure relief valves and assembly of pressure vessel pressure relief valves at the above location only (The assembly of valves does not cover welding, brazing or fusing)

 UV-5 Manufacture of pressure vessel pressure relief valves and assembly of pressure vessel pressure relief valves at the above location only (This authorization does not cover welding, brazing or fusing)

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(UD) Pressure Vessel Pressure Relief Devices (Div. 1)

Pressure Vessel Pressure Relief Devices (Div. 1)

UD-1 Manufacture of pressure vessel pressure relief devices at the above location only

 UD-2 Manufacture of pressure vessel pressure relief devices at the above location only (This authorization does not cover welding, brazing or fusing)

 UD-3 Manufacture of pressure vessel pressure relief device holders at the above location only

 UD-4 Manufacture of pressure vessel pressure relief device holders at the above location only (This authorization does not cover welding, brazing or fusing)

 UD-5 Manufacture of pressure vessel pressure relief devices and pressure vessel pressure relief device holders at the above location only

 UD-6 Manufacture of pressure vessel pressure relief devices and pressure vessel pressure relief device holders at the above location only (This authorization does not cover welding, brazing or fusing)

(PRT) Parts Fabrication

PRT-3 Fabrication of parts without design responsibility for ASME Section VIII, Div. 1 at the above location only (Note: Replaced U-21)

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