T11 PORTABLE TANK INSTRUCTION T11
The general provisions of section 4.2.1 and the requirements of section 6.7.2 shall be met.
Minimum test pressure 6 bar
Minimum shell thickness (reference steel) 5 mm for tanks up to 1.80 m diameter and for larger tanks carrying solids of packing group II or III; 6 mm otherwise.
Pressure-relief provisions Normal
Bottom opening provisions 3 shut-off devices required.
Alternatives permitted T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22

Special packing provisions:

TP1
The degree of filling prescribed in 4.2.1.9.2 shall not be exceeded.
TP2
The degree of filling prescribed in 4.2.1.9.3 shall not be exceeded.
TP7
Air shall be eliminated from the vapour space by nitrogen or other means.
TP8
The test pressure for the portable tank may be reduced to 1.5 bar when the flashpoint of the substances transported is greater than 0°C.
TP13
Self-contained breathing apparatus shall be provided when this substance is transported, unless no self-contained breathing apparatus, as required by SOLAS regulation II-2/19 (II-2/54), is on board.
TP27
A portable tank having a minimum test pressure of 4 bar may be used if it is shown that a test pressure of 4 bar or less is acceptable according to the test pressure definition in 6.7.2.1.
TP28
A portable tank having a minimum test pressure of 2.65 bar may be used if it is shown that a test pressure of 2.65 bar or less is acceptable according to the test pressure definition in 6.7.2.1.