Technical Committee on Highway Tanks and TC Portable Tanks for the Transportation of Dangerous Goods ix

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1 Canadian Standards Association Highway tanks and TC portable tanks for the transportation of dangerous goods Contents Technical Committee on Highway Tanks and TC Portable Tanks for the Transportation of Dangerous Goods ix Editorial Subcommittee xiii Preface xiv 1 Scope 1 2 Reference publications 2 3 Terminology and definitions Terminology General The term lethal substance in the ASME Boiler and Pressure Vessel Code (ASME Code) Definitions 5 4 General requirements Facility requirements Highway tanks Portable tanks Welding Welding procedure qualification Welder performance qualification Tank and plate markings Certificates and reports 10 5 Specifications for highway tanks Requirements for all highway tanks The ASME Code Means of containment Securement Supports for attachments and appurtenances Rear-end protection Inspection, testing, and marking Certification Highway tanks for the transportation of liquefied compressed gases and refrigerated liquefied gases Specification TC 331, TC 338, and TC 341 tanks General Piping, valves, and fittings Gauging devices Safety relief devices Tank design and test pressures Inner vessel or tank support pads Inspection openings and manholes Ground clearance Highway tanks primarily for the transportation of compressed gases as liquefied gas Specification TC 331 highway tanks Construction standards Design Postweld heat treatment 30 January 2009 iii

2 B Canadian Standards Association Material Material thickness Structural integrity Welding Refrigeration and heating coils Supports Inspection and testing Marking Insulated highway tanks Specification TC 338 tanks Construction standards Design Insulation Material Postweld heat treatment Sketches Material thickness Stress calculations Joints Manholes Openings Holding time Inner vessel or jacket supports Supports for protected inner vessel Gauging devices Cleanliness Inspection and testing Marking Pressure relief and control Highway tanks for the transportation of nonflammable refrigerated liquefied gases Specification TC 341 tanks Inner vessel construction Inner vessel design Material thickness Inner vessel interior Compatibility Insulation combustibility in oxygen service Jacket Materials Joints Openings and controls Pressure-relief devices Piping, valves, and fittings Supports and anchoring Gauging devices Inspection and testing Marking Highway tanks for the transportation of dangerous goods other than liquefied compressed gases Specification TC 406, TC 407, TC 412, and TC 423 tanks General requirements Multi-tank vehicle connecting structures and drains Material Structural integrity Joints Manhole assemblies 61 iv January 2009

3 Canadian Standards Association Highway tanks and TC portable tanks for the transportation of dangerous goods Supports and anchoring Circumferential reinforcements Damage protection Pumps, piping, hoses, and connections Pressure relief Tank outlets Gauging devices Connections for reinforced plastic tanks Highway tank vehicle Specification TC General Maximum allowable working pressure (MAWP) Material Pressure relief Outlets Specification TC 406 crude tanks Highway tank vehicle Specification TC General requirements Material Manhole assemblies Vacuum relief Highway tank vehicle Specification TC General requirements Material Vacuum relief Alternative minimum venting capacity for tanks transporting corrosive materials Highway tanks for the transportation of emulsion and water-gel explosives Specification TC General Material and material thickness Circumferential reinforcement Insulation system Pressure- and vacuum-relief devices Thermometer Restrictions on valves, fittings, and hardware Cleaning and drainage Security Electrical wires and fixtures Heating systems Pumping systems Structural inspection procedures 78 6 TC portable tanks Requirements for all portable tanks General The ASME Code Means of containment Inspection, testing, and marking Tank mountings Piping, valves, and fittings Safety relief devices Certificate of Compliance Steel portable tanks Specification TC Construction standards Design 90 January 2009 v

4 B Canadian Standards Association Material Welding Postweld heat treatment Marking Location of openings Gauging devices Additional safety devices Portable tanks for the transportation of liquid dangerous goods Specification TC Construction standards Postweld heat treatment Design Material thickness Expansion domes Manhole cover attachments Bottom openings Design and closures of openings Multi-tank units Lining Portable tanks for the transportation of nonflammable atmospheric gases as refrigerated liquefied gases Specification TC 11 portable tanks Construction standards Inner vessel Insulation Jacket Cleanliness Openings and controls Pressure-relief devices Piping, valves, and fittings Supports and anchoring Gauging devices Inspection and testing Marking Portable tanks Specification TC Construction standards Inspection, testing, and maintenance of tanks Periodic and obligatory inspection and testing General requirements for periodic inspection and testing Obligatory testing Decontamination Inspections and tests External inspection Internal inspection Lining inspection Upper coupler area inspection Leakage test Thickness test Pressure tests Internal inspection by the wet fluorescent magnetic particle method Test of off-truck emergency shutdown system Hose assembly inspection and testing Structural inspection Test and inspection reports General 110 vi January 2009

5 Canadian Standards Association Highway tanks and TC portable tanks for the transportation of dangerous goods Welding inspection reports Retention of reports Periodic test or inspection marking Repairs to tanks General Decontamination prior to repairs Exception Postweld heat treatment of minor repairs Repair procedures for pressure tank trucks and trailers Overlay patches Field welding Testing and inspection of repairs Additional inspection for pressure tanks Record retention and transfer Modification including remounts of previously certified tanks General Registration requirements Authorizations Specification requirements Design review, identification, and approval of modifications Inspection and testing Certification Marking Illegible or missing metal identification plates General Supporting documentation Installation of a replacement metal identification plate Forms Facility registration, Design Engineer registration, marking, documentation, and design review requirements Facility registration General Mobile unit limitation Specific requirements Application for registration Design Engineer Tank Inspector qualification Tester qualification Documentation Certificate of Compliance Reports of inspections and tests during manufacture or modification Design review General Manufacturer s Design Identification Number (MDIN) Transport Canada Registration Number (TCRN) Changes in design and tank modification Marking 128 Annexes A (normative) Transition and retrofitting 129 B (informative) Sample registration documents 132 C (informative) Alternatives to internal inspection of vacuum-insulated TC 341 highway tanks 142 D (informative) Tests for off-truck emergency shutdown systems 148 E (informative) Highway and portable tank specifications 149 January 2009 vii

6 B Canadian Standards Association Tables 5.1 Minimum total venting capacity Volume of free air per hour at STP* for Specification TC 406, TC 407, TC 412, and TC 423 tanks Minimum thickness of heads or bulkheads and baffles when used as tank reinforcement for mild steel (MS), high-strength low-alloy steel (HSLA), austenitic stainless steel (SS), or aluminum alloy (AL) for Specification TC 406 tanks Minimum thickness of shell using mild steel (MS), high-strength low-alloy steel (HSLA), austenitic stainless steel (SS), or aluminum (AL) for Specification TC 406 tanks Minimum thickness of heads, bulkheads, and baffles when used as tank reinforcement using mild steel (MS), high-strength low-alloy steel (HSLA), austenitic stainless steel (SS), or aluminum alloy (AL) after forming for Specification TC 407 tanks Minimum thickness of shell using mild steel (MS), high-strength low-alloy steel (HSLA), austenitic stainless steel (SS), or aluminum alloy (AL) after forming for Specification TC 407 tanks Minimum thickness of heads (or bulkheads and baffles when used as tank reinforcement) using mild steel (MS), high-strength low-alloy steel (HSLA), austenitic stainless steel (SS), or aluminum (AL) after forming for Specification TC 412 tanks Minimum thickness of shell using steel or aluminum after forming for specification TC 412 tanks TC specifications that apply to modification of corresponding specification tanks Periodic inspection and test intervals Additional periodic inspection and test intervals Pressures for periodic retesting Minimum thickness for TC and MC 306, 307, and 312 specification tanks manufactured with steel and steel alloys Minimum thickness for TC and MC 306, 307, and 312 specification tanks manufactured with aluminum and aluminum alloys 121 viii January 2009