Pressure Vessels

To fabricate Pressure Vessel and Code Stamp minimum required Codes, as per ASME.

Pressure Vessels and Miniature Pressure Vessels (Certification Designators U and UM)

Section VIII - Pressure Vessels

Division 1

Provides requirements applicable to the design, fabrication, inspection, testing, and certification of pressure vessels operating at either internal or external pressures exceeding 15 psig. Such vessels may be fired or unfired. This pressure may be obtained from an external source or by the application of heat from a direct or indirect source, or any combination thereof. Specific requirements apply to several classes of material used in pressure vessel construction, and also to fabrication methods such as welding, forging and brazing.

Division 1 Code Stamp:U

Contains mandatory and non-mandatory appendices detailing supplementary design criteria, nondestructive examination and inspection acceptance standards. Rules pertaining to the use of the single ASME certification mark with the U, UM and UV designators are also included.

BPVC Section II-Materials-Part A-Ferrous Materials Specifications (2 Volumes)

BPVC Section II-Materials-Part B-Nonferrous Material Specifications

BPVC Section II-Materials Part C-Specifications for Welding Rods Electrodes and Filler Metals

BPVC Section II-Materials-Part D-Properties-(Customary)

BPVC Section V-Nondestructive Examination

BPVC Section VIII-Rules for Construction of Pressure Vessels Division 1

BPVC Section IX-Welding, Brazing, and Fusing Qualifications

Pressure Vessel Can be fabricated by using many codes and Standard or Good Engineering Practice (GEP)

But most commonly used code is ASME BPVC .

Pressure Vessel Can be classified as two types based on their resting position.

  • Vertical Pressure Vessel - Supported on Skirt
  • Horizontal Pressure Vessel - Supported on Saddle

ASME BPVC Section VIII — Pressure Vessels

Division 1

Provides requirements applicable to the design, fabrication, inspection, testing, and certification of pressure vessels operating at either internal or external pressures exceeding 15 psig. Such vessels may be fired or unfired. This pressure may be obtained from an external source or by the application of heat from a direct or indirect source, or any combination thereof. Specific requirements apply to several classes of material used in pressure vessel construction, and also to fabrication methods such as welding, forging and brazing.

Division 1 Code Stamp:U

Contains mandatory and non-mandatory appendices detailing supplementary design criteria, nondestructive examination and inspection acceptance standards. Rules pertaining to the use of the single ASME certification mark with the U, UM and UV designators are also included.

Division 2 Code Stamp:U 2

Requirements on materials, design, and nondestructive examination are more rigorous than in Division 1; however, higher design stress intensify values are permitted. These rules may also apply to human occupancy pressure vessels typically in the diving industry. Rules pertaining to the use of the single ASME certification mark with the U2 and UV designators are also included.

Division 3 Code Stamp:U 3

Requirements are applicable to pressure vessels operating at either internal or external pressures generally above 10,000 psi. It does not establish maximum pressure limits for either Section VIII, Divisions 1 or 2, nor minimum pressure limits for this Division. Rules pertaining to the use of the single ASME certification mark with the U3 and UV3 designator are also included.