The portable tank instructions T1 to T22 apply to liquid and solid substances of Class 1 and Classes 3 to 9. The general provisions of Section 4.2.1 and the requirements of Section 6.7.2 shall be met. The instructions for portable tanks with FRP shells apply to substances of classes 1, 3, 5.1, 6.1, 6.2, 8 and 9. Additionally, the requirements of Chapter 6.9 apply. T7 Minimum test pressure (bar): 4 Minimum shell thickness (in mm-reference steel for shells made of metallic materials) (see 6.7.2.4): See 6.7.2.4.2 Pressure-relief requirements (see 6.7.2.8): Normal *) Bottom opening requirements (see 6.7.2.6): See 6.7.2.6.3 *) When the word "Normal" is indicated, all the requirements of 6.7.2.8 apply except for 6.7.2.8.3.

Code L4BN: L = Type of tank: Tank for substances in the liquid state (liquids or solids handed over for carriage in the molten state). ------------------------- 4 = Calculation pressure: Minimum calculation pressure: 4 bar (see 6.8.2.1.14) ------------------------- B = Openings (see 6.8.2.2.2): Tank with bottom-filling or bottom-discharge openings with 3 closures. ------------------------- N = Safety valves/devices: Tank without a breather device according to 6.8.2.2.6 and not hermetically closed.

(a) A vehicle intended for the carriage of liquids having a flash-point of not more than 60°C (with the exception of diesel fuel complying with standard EN 590:2013 + A1:2017, gas oil, and heating oil (light) - UN No. 1202 - with a flash-point as specified in standard EN 590:2013 + A1:2017) in fixed tanks or demountable tanks with a capacity exceeding 1 m³ or in tank-containers or portable tanks with an individual capacity exceeding 3 m³; or (b) A vehicle intended for the carriage of flammable gases in fixed tanks or demountable tanks with a capacity exceeding 1 m³ or in tank-containers, portable tanks or MEGCs with an individual capacity exceeding 3 m³; or, (c) A battery-vehicle with a total capacity exceeding 1 m³ intended for the carriage of flammable gases; or d) A vehicle intended for the carriage of hydrogen peroxide, stabilized or hydrogen peroxide, aqueous solution stabilized with more than 60% hydrogen peroxide (Class 5.1, UN No. 2015) in fixed tanks or demountable tanks with a capacity exceeding 1 m3 or in tank-containers or portable tanks with an individual capacity exceeding 3 m³;