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PRESSURE VESSELS

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 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 requirements on materials, design and nondestructive examination are more rigorous than in Division 1; however, higher design stress intensity 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 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, UV3, and UD3 designator are also included


REFERENCED BPVC SECTIONS

  • BPVC-II, A, B, C, D Section II, Materials, Parts A through D

  • BPVC-V Section V, Nondestructive Examination.

  • BPVC-IX Section IX, Welding, Brazing, and Fusing Qualifications


REFERENCED ASME STANDARDS

DIVISION 1

  • Five Standards from the B1 Series on screw threads.

  • Thirteen Standards from the B16 Series on pipe flanges and fittings.

  • Nine Standards from the B18 Series on hex bolts.

  • B36.10M Welded and Seamless Wrought Steel Pipe.

  • B36.19M Stainless Steel Pipe.

  • NQA-1 Quality Assurance Program Requirements for Nuclear Facilities.

  • QAI-1 Qualifications for Authorized Inspection.

  • PCC-1 Guidelines for Pressure Boundary Bolted Flange Joint Assembly.

  • PCC-2 Repair of Pressure Equipment and Piping.

  • PTC 25 Pressure Relief Devices.

  • QAI-1 Qualifications for Authorized Inspection.

  • CA-1 Conformity Assessment Requirements.

DIVISION 2

  • API 579-1/ASME FFS-1 Fitness-For-Service.

  • Three Standards from the B1 Series on screw threads.

  • Nine Standards from the B16 Series on pipe flanges and fittings.

  • Four Standards from the B18 Series on hex bolts.

  • B36.10M Welded and Seamless Wrought Steel Pipe.

  • B36.19M Stainless Steel Pipe.

  • NQA-1 Quality Assurance Program Requirements for Nuclear Facilities.

  • PCC-1 Guidelines for Pressure Boundary Bolted Flange Joint Assembly.

  • PTC 25 Pressure Relief Devices.

  • QAI-1 Qualifications for Authorized Inspection.

  • CA-1Conformity Assessment Requirements.

DIVISION 3

  • API 579-1/ASME FFS-1 Fitness-For-Service.

  • B1.1 Unified Inch Screw Threads (UN and UNR Thread Form)

  • B16.5 Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard

  • B18.2.2 Nuts for General Applications: Machine Screw Nuts, Hex, Square, Hex Flange, and Coupling Nuts (Inch Series)

  • B18.2.6M Metric Fasteners for Use in Structural Applications

  • B36.10M Welded and Seamless Wrought Steel Pipe.

  • B46.1 Surface Texture (Surface Roughness,Waviness and Lay).

  • PTC 25 Pressure Relief Devices.

  • QAI-1 Qualifications for Authorized Inspection.

  • CA-1 Conformity Assessment Requirements

  • PCC-3 Inspection Planning Usingisk-Based Methods


Universal Engineering Services has more than a decades experience in the pressure vessel design for customers in UAE, Oman, Qatar, Kuwait, Bahrain, Saudi Arabia, and many more countries all over the world. UES work to many ASME standards to design and validate pressure vessels, boiler, fittings and piping systems. We are also experts in Stress analysis of piping, structural design, ASME Joint review, Design of Storage tanks, code calculations, FEA/FEM, and spotless service on design management.


**The content of this article is taken from web open source. The blogs are intended only to give technical knowledge to young engineers. Any engineering calculators, technical equations, and write-ups are only for reference and educational purposes.

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