Special provisions for ADR tanks

Extra conditions for the use (TU), construction (TC), equipment (TE), type approval (TA), testing (TT) and marking (TM) of ADR tanks. These codes appear in Table A column 13; ADR sets them out in section 4.3.5, 6.8.4 of ADR 2025 (ECE/TRANS/352). 87 codes are in use, 0 reviewed. Each meaning below is a paraphrase in FreightUtils' own words, not the official text.

• TU15 · 801 rows
  Tank must not be used to carry foodstuffs, articles of consumption or animal feeds.
• TE19 · 716 rows
  Top fittings recessed, valved or shielded against overturning; bottom fittings recessed 200 mm or rail-protected; rear fittings behind the 9.7.6 bumper.
• TE21 · 282 rows
  Closures must be protected by lockable caps.
• TU14 · 282 rows
  Protective caps on the closures must be locked during carriage.
• TA4 · 173 rows
  Conformity assessment under 1.8.7 by the competent authority or an inspection body to 1.8.6.3 accredited to EN ISO/IEC 17020:2012 type A.
• TT9 · 173 rows
  Inspections and tests, including supervision of manufacture, under 1.8.7 by the competent authority or a type A accredited inspection body.
• TU3 · 155 rows
  Shell interior and every part touching the substance kept clean; no lubricant that could react dangerously with it on pumps or valves.
• TM2 · 51 rows
  Tanks must additionally be marked "Do not open during carriage" and "Gives off flammable gases on contact with water".
• TU42 · 33 rows
  Aluminium-alloy shells, lined or unlined, only if the substance has a pH from 5.0 to 8.0.
• TE5 · 16 rows
  Where shells have thermal insulation, it must be made of materials that are not readily flammable.
• TT3 · 16 rows
  Periodic inspections at most every eight years with an instrument thickness check; leakproofness test and check at most every four years.
• TU1 · 14 rows
  Tank may only be handed over once the substance has fully solidified under an inert gas blanket; empty uncleaned tanks are filled with inert gas.
• TU4 · 14 rows
  Cargo kept under an inert gas blanket of 50 kPa (0.5 bar) gauge or more; uncleaned empty tanks likewise charged with inert gas.
• TU6 · 14 rows
  Carriage in tanks, battery-vehicles and MEGCs not authorized when the substance has an LC50 below 200 ppm.
• TU22 · 14 rows
  Fill to no more than 90 % of capacity; for liquids leave 5 % empty at an average liquid temperature of 50 °C.
• TU19 · 13 rows
  Filling up to 98 % allowed, measured at filling temperature and pressure; 4.3.2.3.4 disapplied.
• TE11 · 11 rows
  Shell and service equipment must keep out foreign matter, prevent leakage and stop dangerous decomposition pressure; a suitable safety valve suffices.
• TC1 · 10 rows
  The materials and construction requirements of 6.8.5 apply to these shells.
• TM3 · 10 rows
  Plate must also give the proper shipping name and, in kg, the highest load mass permitted for this substance.
• TM1 · 8 rows
  Tanks must additionally be marked "Do not open during carriage. Liable to spontaneous combustion".
• TT1 · 8 rows
  Pure aluminium tanks need initial and periodic hydraulic tests at only 250 kPa (2.5 bar) gauge.
• TU30 · 8 rows
  Fill as set in the tank type-approval test report, and never above 90 % of capacity.
• TE6 · 6 rows
  Tanks may be fitted with a non-blocking device that prevents leakage and excess over- or under-pressure in the shell.
• TE26 · 6 rows
  Flammable refrigerated liquefied gas tanks: every filling and discharge connection needs an instant-closing automatic stop-valve close to the tank.
• TT10 · 6 rows
  Periodic inspections every three years at most for fixed and demountable tanks, every two and a half years for tank-containers.
• TU18 · 6 rows
  Filling kept low enough that liquid heated to the safety-valve opening pressure would fill no more than 95 % of capacity; 4.3.2.3.4 not applied.
• TC2 · 5 rows
  Shells and equipment of aluminium at least 99.5 % pure or a steel that will not decompose hydrogen peroxide; aluminium walls capped at 15 mm.
• TE8 · 5 rows
  Connections to the external pipe-sockets must be of materials that do not cause hydrogen peroxide to decompose.
• TT11 · 5 rows
  LPG-only carbon-steel fixed and demountable tanks may replace the periodic hydraulic test with listed NDT techniques, on request.
• TA1 · 4 rows
  Tanks must not be approved for carrying organic substances.
• TA2 · 4 rows
  Tank carriage allowed under competent-authority conditions of the country of origin, based on type-approval tests showing it is safe.
• TE4 · 4 rows
  Shells must have thermal insulation made of materials that are not readily flammable.
• TE12 · 4 rows
  Organic peroxide tanks: insulation, temperature sensors, spring-loaded safety valves and emergency relief sized for one hour of full fire engulfment.
• TE24 · 4 rows
  Bitumen tanks with a spray bar may replace the 6.8.2.2.2 closing device by a shut-off valve on the discharge pipe ahead of the spray bar.
• TM4 · 4 rows
  Chemical name and approved concentration stamped on the plate, or directly on a suitably reinforced shell.
• TU7 · 4 rows
  Gaskets and materials used to seal joints or maintain closures must be compatible with the contents.
• TU12 · 4 rows
  When the tank changes use, shell and equipment must be thoroughly cleaned of residues before and after carrying this substance.
• TU13 · 4 rows
  Tank free of impurities when filled; valves and external piping emptied after filling or discharge.
• TU27 · 4 rows
  Tanks may be filled to no more than 98 % of capacity.
• TU35 · 4 rows
  Empty uncleaned tanks that held these substances are not subject to ADR once adequate measures have removed any hazard.
• TC6 · 3 rows
  Tanks of aluminium at least 99 % pure or of aluminium alloy need walls no thicker than 15 mm, whatever 6.8.2.1.17 gives.
• TE3 · 3 rows
  Phosphorus tanks: external heating only, top-entry piping, lockable caps on openings and a level gauge for phosphorus and water.
• TE9 · 3 rows
  A top-mounted shut-off device must stop pressure build-up from decomposition, liquid leakage and entry of foreign matter.
• TE10 · 3 rows
  Shut-off devices must not be blockable by solidified cargo; any insulation must be inorganic and free of combustible matter.
• TM7 · 3 rows
  The trefoil symbol of 5.2.1.7.6 must be stamped on the tank plate, or engraved on a suitably reinforced shell wall.
• TT7 · 3 rows
  Notwithstanding 6.8.2.4.2, a programme approved by the competent authority can take the place of the periodic internal inspection.
• TU2 · 3 rows
  The substance must travel under an inert gas blanket; empty uncleaned tanks must be filled with inert gas.
• TU16 · 3 rows
  Uncleaned empty tanks must be handed over filled with a protective agent: nitrogen, water and nitrogen, or water at 96–98 %.
• TU17 · 3 rows
  Only to be carried in battery-vehicles or MEGCs whose elements are receptacles.
• TU21 · 3 rows
  Substance must be protected by nitrogen, water and nitrogen, or a water layer of at least 12 cm, with filling limits of 96 % or 98 % at 60 °C.
• TU28 · 3 rows
  Tanks may be filled to no more than 95 % of capacity at a reference temperature of 15 °C.
• TU36 · 3 rows
  Degree of filling under 4.3.2.2, at a reference temperature of 15 °C, must not exceed 93 % of capacity.
• TA3 · 2 rows
  Only tanks with tank code LGAV or SGAV may be used; the 4.3.4.1.2 hierarchy does not apply.
• TA5 · 2 rows
  Only tanks with tank code S2.65AN(+) may be used; the 4.3.4.1.2 hierarchy does not apply.
• TC7 · 2 rows
  Effective minimum shell thickness must be at least 3 mm.
• TE14 · 2 rows
  Insulation required; insulation touching the shell or heating parts must ignite at least 50 °C above the tank's maximum design temperature.
• TE23 · 2 rows
  Tanks must be fitted with a non-blocking device that prevents leakage and excess over- or under-pressure in the shell.
• TT6 · 2 rows
  Periodic inspection at most every 3 years; printed only in the column for fixed tanks, demountable tanks and battery-vehicles.
• TU31 · 2 rows
  Tanks may be filled to no more than 1 kg per litre of capacity.
• TU34 · 2 rows
  Tanks may be filled to no more than 0.84 kg per litre of capacity.
• TU37 · 2 rows
  Tank carriage only for pathogens posing moderate individual risk and low community risk, where effective treatment and prevention exist.
• TU39 · 2 rows
  Suitability for tank carriage must be demonstrated by a method approved by the competent authority; the substance must not be left long enough to cake.
• TC3 · 1 row
  Shells must be made of austenitic steel.
• TC4 · 1 row
  Shells need an enamel or equivalent protective lining if UN 3250 chloroacetic acid attacks the shell material.
• TC5 · 1 row
  Shells must have a lead lining at least 5 mm thick, or an equivalent lining.
• TC8 · 1 row
  Shells must be of aluminium or aluminium alloy and may be designed for an external design pressure of at least 5 kPa (0.05 bar).
• TE7 · 1 row
  Discharge needs two independent shut-offs in series: an approved quick-closing internal valve and an external valve, plus a blank flange.
• TE13 · 1 row
  Tanks must be thermally insulated and fitted with an external heating device.
• TE18 · 1 row
  Tanks for substances filled above 190 °C need deflectors at right angles to the top filling openings.
• TE20 · 1 row
  A safety valve is required, whatever other tank codes the 4.3.4.1.2 hierarchy would allow.
• TM5 · 1 row
  Tanks must also show the month and year of the most recent internal shell inspection.
• TT2 · 1 row
  Shell lining condition must be inspected every year by an inspection body examining the inside of the shell.
• TT5 · 1 row
  Hydraulic pressure tests every 3 years at most for fixed and demountable tanks, every 2½ years for tank-containers.
• TT8 · 1 row
  Anhydrous ammonia tanks of fine-grained steel above 400 N/mm² yield need magnetic particle crack inspection at every periodic inspection.
• TU8 · 1 row
  Aluminium-alloy tanks only if reserved exclusively for this carriage and the acetaldehyde is acid-free.
• TU9 · 1 row
  UN 1203 petrol with vapour pressure at 50 °C above 110 kPa and up to 150 kPa may also use tanks designed to 6.8.2.1.14 (a) with 6.8.2.2.6 equipment.
• TU11 · 1 row
  Filling temperature limited to 60 °C, or 80 °C if smoulder spots are prevented and the tank is pressure-checked and kept above atmospheric pressure.
• TU23 · 1 row
  Filling limited to 0.93 kg per litre of capacity by mass, or 85 % by volume.
• TU24 · 1 row
  Filling limited to 0.95 kg per litre of capacity by mass, or 85 % by volume.
• TU25 · 1 row
  Filling limited to 1.14 kg per litre of capacity by mass, or 85 % by volume.
• TU26 · 1 row
  Degree of filling must not exceed 85 %.
• TU29 · 1 row
  Tanks may be filled to no more than 97 % of capacity, and the temperature after filling must not exceed 140 °C.
• TU32 · 1 row
  Tanks may be filled to no more than 88 % of capacity.
• TU33 · 1 row
  Fill to between 88 % and 92 % of capacity, or alternatively 2.86 kg per litre.
• TU40 · 1 row
  Only to be carried in battery-vehicles or MEGCs whose elements are seamless receptacles.
• TU41 · 1 row
  Tank suitability must be shown to the competent authority of every country of transit or destination; the substance must not be left long enough to cake.
• TU43 · 1 row
  An empty uncleaned tank may travel up to three months past its lining inspection expiry, to reach that inspection before refilling.