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ASME BPVC.XII-2025

2025 ASME Boiler and Pressure Vessel Code, Section XII, Rules for Construction and Continued Service of Transport Tanks
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ASME BPVC.XII-2025

2025 ASME Boiler and Pressure Vessel Code, Section XII, Rules for Construction and Continued Service of Transport Tanks

PUBLISH DATE 2025
ASME BPVC.XII-2025
The purpose of ASME BPVC.XII-2025 is to establish the mandatory Rules for Construction and Continued Service of Transport Tanks used for moving hazardous and non-hazardous pressurized goods.
What It Is Used For This document, ASME Section XII, is a comprehensive set of rules for pressure vessels specifically designed for transportation applications. It applies to vessels that carry dangerous goods via various modes, such as highway (cargo tank motor vehicles), rail, air, or water. It addresses the dynamic loading conditions and regulatory needs of transportation, which are different from stationary pressure vessels (covered by Section VIII). Its primary uses are:
  • Transport Tank Construction: It governs the design, fabrication, inspection, testing, and certification of transport tanks intended for service at pressures ranging from full vacuum up to 3,000 psig and volumes greater than 120 gallons.
  • Continued Service Requirements: Unlike most construction codes, Section XII includes extensive rules for Continued Service. This term comprises mandatory inspection, testing, repair, alteration, and recertification procedures for tanks already in use, ensuring the ongoing safety of aging transportation equipment.
  • Modal Appendices: The section contains Modal Appendices that provide supplemental, specific requirements based on the mode of transport (e.g., highway, rail, portable tanks) to align with national and international transport regulations (such as those from the U.S. Department of Transportation, or DOT).
  • Certification: Manufacturers and repair organizations complying with this section are authorized to apply the appropriate ASME Certification Marks, primarily the "T" stamp (Transport Tank) or "TD" stamp (Transport Tank Rupture Disk Devices).
In summary, BPVC.XII is the essential technical standard that ensures the structural integrity and safety of pressure vessels used to transport liquid and gaseous commodities in commerce, serving as a direct link between the ASME code framework and federal transportation safety regulations.
SDO ASME: American Society of Mechanical Engineers
Document Number BPVC.XII
Publication Date July 1, 2025
Language en - English
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