Extended Operational and Trade Vocabulary
IMDG Code, Classes, Packing and Segregation glossary (page 5)
The dangerous-goods vocabulary anchored in the IMDG Code: the hazard classes, packing groups and provisions, segregation tables, the EmS fire and spill schedules, acceptance checks under IMDG 1.4, and on-deck accessibility for firefighting. Grounds each term in the IMDG Code provision that governs the carriage of packaged dangerous goods.
1120 defined terms.
Showing 120 on this page (page 5 of 5).
U
- UN 2795
- Batteries wet filled with alkali Class 8.
- UN 2796
- Sulfuric acid with not more than 51 percent acid or battery fluid acid Class 8.
- UN 2800
- Batteries wet non spillable Class 8.
- UN 2809
- Mercury Class 8 with Class 6.1 subsidiary risk.
- UN 2814
- Infectious substance affecting humans Class 6.2 Category A.
- UN 2900
- Infectious substance affecting animals only Class 6.2 Category A.
- UN 2908
- Radioactive material excepted package empty packaging Class 7.
- UN 2909
- Radioactive material excepted package articles manufactured from natural uranium Class 7.
- UN 2910
- Radioactive material excepted package limited quantity of material Class 7.
- UN 2911
- Radioactive material excepted package instruments or articles Class 7.
- UN 2912
- Radioactive material LSA-I Class 7.
- UN 2915
- Radioactive material Type A package Class 7.
- UN 2916
- Radioactive material Type B(U) package Class 7.
- UN 2917
- Radioactive material Type B(M) package Class 7.
- UN 2978
- Uranium hexafluoride radioactive material fissile Class 7 with Class 8 subsidiary risk.
- UN 3077
- Environmentally hazardous substance solid NOS Class 9.
- UN 3082
- Environmentally hazardous substance liquid NOS Class 9.
- UN 3089
- Metal powder flammable NOS Class 4.1.
- UN 3090
- Lithium metal batteries Class 9.
- UN 3091
- Lithium metal batteries contained in or packed with equipment Class 9.
- UN 3164
- Articles pressurized pneumatic or hydraulic containing non flammable gas Class 2.2.
- UN 3171
- Battery powered vehicle or battery powered equipment Class 9.
- UN 3245
- Genetically modified microorganisms or organisms Class 9.
- UN 3257
- Elevated temperature liquid NOS at or above 100 degrees Celsius and below its flash point Class 9.
- UN 3258
- Elevated temperature solid NOS at or above 240 degrees Celsius Class 9.
- UN 3268
- Safety devices electrically initiated Class 9.
- UN 3291
- Clinical waste unspecified NOS or regulated medical waste NOS Class 6.2.
- UN 3322
- Radioactive material LSA-III Class 7.
- UN 3323
- Radioactive material Type C package Class 7.
- UN 3373
- Biological substance Category B Class 6.2.
- UN 3480
- Lithium ion batteries Class 9.
- UN 3481
- Lithium ion batteries contained in or packed with equipment Class 9.
- UN 3500
- Chemical under pressure NOS Class 2.2.
- UN 3528
- Engine internal combustion flammable liquid powered Class 3.
- UN 3529
- Engine internal combustion flammable gas powered Class 2.1.
- UN 3536
- Lithium batteries installed in cargo transport unit Class 9.
- UN 3537 to UN 3548
- Articles containing dangerous goods NOS series by class.
- UN 3549
- Medical waste Category A affecting humans or animals only solid Class 6.2.
- UN Manual of Tests and Criteria
- UN publication providing classification test methods referenced by IMDG.
- UN number
- Number identifying dangerous goods under UN model regulations.
- UN Packaging
- Packaging meeting UN Recommendations performance tests and bearing UN marking.
- UN Portable Tank
- Multimodal tank meeting IMDG Chapter 6.7 design and approval requirements.
- UN Recommendations on the Transport of Dangerous Goods
- Orange Book published by UN ECOSOC, foundation for IMDG and other modal codes.
- UN/SCETDG
- UN Sub Committee of Experts on the Transport of Dangerous Goods, develops the Model Regulations.
- Underdeck Stowage
- Cargo carried below the weather deck.
- Underwriter
- person or entity accepting risk in exchange for premium.
- United States Coast Guard
- USCG, enforces SOLAS and IMDG in US ports through 33 CFR and 46 CFR.
- Unstabilized
- Without inhibitor against polymerization, often increases hazard and may forbid transport for some substances.
- Upper Tier Establishment
- Seveso term not used in IMDG; included to avoid confusion with port establishments handling dangerous goods.
- Uranium Hexafluoride
- UN 2977 fissile excepted or UN 2978 Class 7 with Class 8 subsidiary risk.
- Uranium Metal Pyrophoric
- UN 2979, Class 7 with Class 4.2 subsidiary risk.
- Urea Hydrogen Peroxide
- UN 1511, Class 5.1 oxidizer with Class 8 subsidiary risk.
V
- V Codes
- IMDG bulk container codes such as V1 and V2 in 4.3 specifying allowable bulk transport modes.
- Vacuum Insulation
- Insulation method used in closed cryogenic receptacles and refrigerated tank containers.
- Vacuum Relief
- Device fitted to tanks to prevent collapse under partial vacuum during cooling or unloading.
- Vacuum Test
- Test on certain packagings to verify integrity under pressure differential.
- Valve
- Component of cylinders and portable tanks regulated under IMDG 6.2 and 6.7 with periodic inspection.
- Valve Protection
- Cap or shroud protecting cylinder valves from impact during transport.
- Vapor pressure
- Pressure exerted by fuel vapors at a given temperature, relevant for methanol and LNG.
- Vehicle
- Liquid portion of a coating, comprising binder and solvent.
- Ventilation
- Mechanical or natural air movement in cargo spaces, often required by stowage codes such as SW4.
- Vermiculite
- Often used as absorbent cushioning material in combination packagings for liquid Class 3 or 6.1.
- Vessel
- General term for ship or barge subject to SOLAS and IMDG depending on size and voyage.
- Vessel Stowage Plan
- Document showing location of every container including dangerous goods, used to verify IMDG segregation.
- Vinyl Acetate Stabilized
- UN 1301, Class 3 flammable liquid Packing Group II.
- Vinyl Bromide Stabilized
- UN 1085, Class 2.1 flammable gas.
- Vinyl Chloride Stabilized
- UN 1086, Class 2.1 flammable liquefied gas.
- Vinyl Ethyl Ether Stabilized
- UN 1302, Class 3 flammable liquid Packing Group I.
- Vinyl Methyl Ether Stabilized
- UN 1087, Class 2.1 flammable gas.
- Vinylidene Chloride Stabilized
- UN 1303, Class 3 flammable liquid Packing Group I.
- Viscosity
- Resistance to flow; cargo pumpability parameter.
- Visual inspection
- Quick check of fuel sample for color, water, and visible solids before lab testing.
- Voids
- Empty spaces in cargo holds and CTUs that must be filled to prevent shifting of dangerous goods packages.
W
- Warning Label
- Generic term for class label or subsidiary risk label.
- Waste Aerosols
- UN 1950 entries can apply to waste aerosols collected for recycling, with specific provisions.
- Waste Class 6.2
- Regulated medical or clinical waste covered by UN 3291 or UN 3549.
- Waste Lithium Batteries
- Covered by SP376 with strict packaging or competent authority approval.
- Water Capacity
- Internal volume of a pressure receptacle measured by mass of water it holds.
- Water Reactive
- Property assigned to Class 4.3 substances which liberate flammable gas in contact with water.
- Water Reactive Substance
- Class 4.3 substance such as UN 1402 calcium carbide.
- Water Spray
- Firefighting medium referenced in many EmS fire schedules.
- Watt Hour Rating
- Energy rating of lithium ion cells and batteries, limit for SP188 small battery shipments.
- Weather deck
- Uppermost deck exposed to weather.
- Welded Steel Drum
- Drum constructed by welding rather than seaming, with codes 1A1 or 1A2.
- Welded Tank
- Tank constructed by welding plates, with weld procedure approvals under IMDG 6.7.
- Wetting Agent
- Diluent used to desensitize explosives, with water and ethanol common choices.
- White Phosphorus
- UN 1381 dry Class 4.2 with Class 6.1 subsidiary risk.
- Wood Treated with Pentachlorophenol
- Generally not regulated under IMDG.
- Wooden Box
- Packaging code 4C1 ordinary or 4C2 sift proof.
- Working Pressure
- Operating tank pressure typically 0.07 to 0.25 barg on membrane and Moss.
- Workplace Exposure Limit
- National hygiene limit such as OSHA PEL or ACGIH TLV; supports planning but is not an IMDG parameter.
- Wrapper
- Protective covering for inner packagings within combination packagings.
X
- X Performance Level
- UN packaging marking indicating suitability for Packing Groups I, II and III.
- Xenon Compressed
- UN 2036, Class 2.2 non flammable non toxic gas.
- Xenon Refrigerated Liquid
- UN 2591, Class 2.2 cryogenic gas.
- Xylenes
- UN 1307, Class 3 flammable liquid Packing Group II or III by flash point.
- Xylenols Solid
- UN 2261, Class 6.1 toxic solid Packing Group II.
- Xylyl Bromide Solid
- UN 3417, Class 6.1 toxic solid Packing Group II.
Y
- Y Performance Level
- UN packaging marking indicating suitability for Packing Groups II and III.
- Yellow Phosphorus
- Class 4.2 spontaneously combustible.
Z
- Z Performance Level
- UN packaging marking indicating suitability for Packing Group III only.
- Zinc Ammonium Nitrite
- UN 1512, Class 5.1 oxidizer Packing Group II.
- Zinc Bromate
- UN 2469, Class 5.1 oxidizer Packing Group III.
- Zinc Chlorate
- UN 1513, Class 5.1 oxidizer Packing Group II.
- Zinc Cyanide
- UN 1713, Class 6.1 toxic solid Packing Group I.
- Zinc Hydrosulfite
- UN 1929, Class 4.2 substance liable to spontaneous combustion Packing Group III.
- Zinc Nitrate
- UN 1514, Class 5.1 oxidizer Packing Group II.
- Zinc Permanganate
- UN 1515, Class 5.1 oxidizer Packing Group II.
- Zinc Phosphide
- UN 1714, Class 4.3 with Class 6.1 subsidiary risk Packing Group I.
- Zinc Powder
- UN 1436, Class 4.3 or Class 4.2 depending on form and treatment.
- Zinc Resinate
- UN 2714, Class 4.1 flammable solid Packing Group III.
- Zirconium Dry Finished Sheets Strip or Coiled Wire
- UN 2009, Class 4.2 substance liable to spontaneous combustion Packing Group III.
- Zirconium Hydride
- UN 1437, Class 4.1 flammable solid Packing Group II.
- Zirconium Nitrate
- UN 2728, Class 5.1 oxidizer Packing Group III.
- Zirconium Picramate Wetted
- UN 1517 with not less than 20 percent water, Class 4.1 flammable solid Packing Group I.
- Zirconium Powder Dry
- UN 2008, Class 4.2 substance liable to spontaneous combustion Packing Group I, II or III.
- Zirconium Powder Wetted
- UN 1358 with not less than 25 percent water, Class 4.1 flammable solid Packing Group II.
- Zirconium Scrap
- UN 1932, Class 4.2 substance liable to spontaneous combustion Packing Group III.
- Zirconium Suspended in a Flammable Liquid
- UN 1308, Class 3 flammable liquid Packing Group I, II or III.
- Zirconium Tetrachloride
- UN 2503, Class 8 corrosive solid Packing Group III.