CARGO TANK MOTOR VEHICLES Dallas Fire Department CARGO TANK MOTOR VEHICLES Cargo Tanks

DOT Definition A tank intended primarily for the carriage of liquids or gases A tank that is permanently attached to or forms any part of any motor vehicle Is loaded of unloaded without being removed from a motor vehicle Is not fabricated under a specification for cylinders, portable tanks, tank cars, or multiunit tank car Cargo Tanks

MC vs. DOT MC 306 Certified before August 31, 1995 and will have spec. plate DOT 406 Certified on August 31, 1995 or later will have certification plate Cargo Tanks

Specification Plate and Certification Plates Helps with the identification of tank type by providing specific information. Spec. Plates located on passenger side front of tank. Certification Plates located on drivers side front of tank. Cargo Tanks

Dallas Fire Department VEHICLE MFG. DALLAS TANK TRUCK CO. BBH 04677 DATE MFR. 1/97 MFG. S/N 306 AL 1/97 DOT MC CERT. DESIGN PRES. PSIG AT 180 oF MAX TEST PRES. 5 PSIG DATE 3 HEAD MAT’L 5454-H32 SHELL MAT’L 5454-0 CAP. BY COMPT. F/R U.S. GAL. 3400-2000-1100 If unsure of what type of tank you are dealing with you 2700 TOTAL 9200 MAX. LOAD 64,000 LBS AT 7.5 LBS./GAL. MAX LMT. LD 1.5 PSIG UNLD 0.5 PSIG GPM GPM Cargo Tanks Cargo Tanks

Multipurpose Plates Is in addition to spec. or certification plate Is color coded along with fittings MC-306/DOT-406=Red MC-307/DOT407=Green MC-312/DOT-412=Yellow Non-specification cargo tank=Blue Identifies the specification under which the cargo tank is operated Common multipurpose configurations are: MC-306/DOT-406 / MC-307/DOT-407 MC-307/DOT-407/MC-312/DOT-412 (Nalco uses this) Cargo Tanks

MC-306/DOT-406 Most oval cross section Non pressurized - less than 3 psi (406 -5 psig) Usually single shell aluminum construction Some older tanks may be constructed of steel Cargo Tanks

Products And Hazard Class MC-306/DOT-406 Generally 9,000 gallons Maximum capacity Products And Hazard Class Gasoline Class 3 Diesel Class 3 Cargo Tanks

Cargo Tanks

Cargo Tanks

Emergency shut-off Air Manual Fusible links (fail at a maximum of 250oF) Cargo Tanks

MC-307/DOT-407 Circular cross section Low pressure (up to 40 psi) Double shell construction with insulation is most common Some insulated tanks may not appear circular Cargo Tanks

MC-307/DOT-407 Usually one to two compartments Overturn protection Spec. plate identifies number of compartment Overturn protection Generally 6,000 to 7,000 gallons maximum capacity Cargo Tanks

MC-307/DOT-407 Products And Hazard Class Flammable & Combustible Liquids 3 Mild Corrosives 8 Poisons 6 Cargo Tanks

MC-307/DOT-407 Horseshoe shape Single Work Platform 40 psig Vapor Pressure Single Outlet Piping NFPA Objective 4-2.3.2

MC-307/DOT-407 Cargo Tanks

MC-312/DOT-412 Circular cross section Smaller diameter than DOT 407 External reinforcement ribs May be found in double shell construction Usually single compartment Cargo Tanks

MC-312/DOT-412 Overturn protection and splash protection at dome cover/valve location Generally 5,000 to 6,000 gallons capacity Cargo Tanks

Products and Hazard Class MC-312/DOT-412 Products and Hazard Class Corrosive and High Density Liquids Sulfuric Acid (15.34 lb.) Class 8 Nitric Acid (12.54 lb.) Class 8 Sodium Hydroxide (17.76 lb.) Class 8 Poison Class 6 Cargo Tanks

MC 312 (DOT 412) Rounded Ends Exterior Stiffner Rings Small Diameter “Cigar Shape” 35 - 50 psig Working Pressure NFPA Objective 4-2.3.2

Cargo Tanks

Cargo Tanks

MC 331 High Pressure Gas Circular cross section Rounded heads Design pressure 100 to 500 psi Single shell, non-insulated tank Upper 2/3 painted white or highly reflective color Cargo Tanks

MC 331 High Pressure Gas Capacity Bobtail Cargo Tank 2,500 gallons Cargo Tanks

MC 331 High Pressure Gas Products And Hazard Class LPG Class 2 Anhydrous ammonia Class 2 Chlorine 2 - 5.1 Cargo Tanks

MC 331 Bolted Manway Large Hemisphere Ends Up to 11,500 gal Cage Around Piping 100 to 500 psig NFPA Objective 4-2.3.2

Cargo Tanks

Cargo Tanks

Cargo Tanks

Cargo Tanks

MC 338 Cryogenic Liquid Well insulated “thermos bottle design with flat tank ends Double shell tank with relief protection Often have vapors discharging from relief valve Cargo Tanks

MC 338 Cryogenic Liquid Product And Hazard Class Oxygen 5.1 (2) Hydrogen 2 Helium 2 Nitrogen 2 Cryogenics exist as a liquid at - 130oF and below Cargo Tanks

MC 338 5000 to 14,000 gal Ends Normally Flat Loading (Sometimes Located Here) Loading/Unloading Station at Rear 23.5 to 500 psig design pressure

Cargo Tanks

Tube Trailer 2 to 20 Cylinders Cylinders 9” to 48” Pressure 3,000 - 5,000 psi Maximum Capacity 180,000 cu ft. Max. Capacity in Canada 200,000 cu ft. Cargo Tanks

Tube Trailer Product And Hazard Class Helium Class 2 Hydrogen Class 2 Oxygen Class 2 Cargo Tanks

Cargo Tanks

Dry Bulk Carriers Capacity up to 1,500 cubic feet Carry Very Heavy Loads; centrifugal force cause of many rollovers Uses air pressure for product transfer Static charges are a common hazard Cargo Tanks

Dry Bulk Carriers Products And Hazard Class Ammonium Nitrate Fertilizer Class 5.1 Cement Class 9 Dry Caustic Soda Class 8 Cargo Tanks

Dry Bulk Carriers Compressor Unit Pneumatically Unloaded Large Sloping “V” or “W” Shaped Bottom Up to 1500 cu. ft.

“V” or “W” Shape Cargo Tanks