Portable tank special provisions

Extra conditions for carriage in portable tanks. These codes appear in Table A column 11; ADR sets them out in section 4.2.5.3 of ADR 2025 (ECE/TRANS/352). 32 codes are in use, 0 reviewed. Each meaning below is a paraphrase in FreightUtils' own words, not the official text.

• TP33 · 700 rows
  The assigned tank instruction covers granular/powdered solids and solids loaded hot but carried as a solid mass.
• TP2 · 616 rows
  Portable tank must not be filled beyond the degree of filling set by 4.2.1.9.3 (the 95-based formula).
• TP1 · 562 rows
  Portable tank must not be filled beyond the degree of filling set by 4.2.1.9.2 (the 97-based formula).
• TP27 · 172 rows
  A 4 bar minimum test pressure tank may be used if 4 bar or less is shown acceptable under 6.7.2.1.
• TP28 · 91 rows
  A 2.65 bar minimum test pressure tank may be used if 2.65 bar or less is shown acceptable under 6.7.2.1.
• TP7 · 84 rows
  Air must be removed from the vapour space, by nitrogen or another method.
• TP8 · 56 rows
  Test pressure may drop to 1.5 bar when the substances carried have a flash point above 0 °C.
• TP29 · 24 rows
  A 1.5 bar minimum test pressure tank may be used if 1.5 bar or less is shown acceptable under 6.7.2.1.
• TP36 · 21 rows
  Fusible elements may be fitted in the vapour space of the portable tank.
• TP3 · 20 rows
  For solids above melting point and hot liquids, maximum filling (%) is set by 4.2.1.9.5: 95 × dr/df.
• TP5 · 19 rows
  The filling restrictions of 4.2.3.6 must be respected.
• TP41 · 17 rows
  With competent authority agreement, the 2.5-year internal examination may be waived for tanks dedicated to these organometallics.
• TP4 · 14 rows
  Degree of filling capped at 90 %, or another figure the competent authority approves.
• TP6 · 10 rows
  Tank needs pressure-relief devices sized to its capacity and the substance so it cannot burst, even in a fire.
• TP24 · 9 rows
  Tank may have an approved vapour-space device that vents slow-decomposition pressure but stops liquid leaking.
• TP40 · 6 rows
  Portable tank must not be carried while connected to spray application equipment.
• TP17 · 5 rows
  Thermal insulation of the tank may only use inorganic, non-combustible materials.
• TP22 · 4 rows
  Lubricant for joints and other devices must be compatible with oxygen.
• TP26 · 4 rows
  When carried heated, the heating device goes outside the shell (for UN 3176 only if it reacts dangerously with water).
• TP32 · 4 rows
  Conditions for UN 0331, 0332 and 3375 in portable tanks: relief device, suitability test for 3375, no caking.
• TP31 · 3 rows
  May be carried in tanks only in the solid state.
• TP9 · 2 rows
  Carriage in a portable tank only under a competent authority approval.
• TP19 · 2 rows
  Shell built 3 mm thicker than the 6.7.3.4 minimum as corrosion allowance; ultrasonic checks midway between hydraulic tests.
• TP21 · 2 rows
  Shell at least 8 mm thick; hydraulic test and internal inspection at least every 2.5 years.
• TP34 · 2 rows
  Impact test of 6.7.4.14.1 not needed if the tank is marked "NOT FOR RAIL TRANSPORT" on its plate and both sides.
• TP42 · 2 rows
  Portable tanks may not be used for caesium or rubidium dispersions.
• TP10 · 1 row
  Lead lining at least 5 mm thick, tested yearly, or another approved lining; 3-month grace after lining inspection lapses.
• TP16 · 1 row
  Tank must have an approved device against under- and over-pressure; relief per 6.7.2.8.3 to stop crystallization.
• TP18 · 1 row
  Keep between 18 °C and 40 °C; tanks with solidified methacrylic acid must not be reheated in transit.
• TP20 · 1 row
  Only in insulated tanks under a nitrogen blanket.
• TP25 · 1 row
  Sulphur trioxide of 99.95 % purity or more may go without inhibitor if kept at or above 32.5 °C.
• TP30 · 1 row
  Only in insulated tanks.