IMDG T-Code

Code Minimum Test Pressure Minimum Shell Thickness Pressure Relief Provisions Bottom Opening Provisions
T1 1.5 bar 5 mm if D < 1.80 m or6 mm if D >1.80 Normal (no bursting disc required) 2 shut-off devices
T2 1.5 bar 5 mm if D <1.80 m or6 mm if D >1.80 Normal (no bursting disc required) 3 shut-off devices
T3 2.65 bar 5 mm if D < 1.80 m or 6 mm if D >1.80 Normal (no bursting disc required) 2 shut-off devices
T4 2.65 bar 5 mm if D < 1.80 m or 6 mm if D >1.80 Normal (no bursting disc required) 3 shut-off devices
T5 2.65 bar 5 mm if D < 1.80 m or 6 mm if D > 1.80 Safety relief valve with bursting disc in series Not allowed
T6 4 bar 5 mm if D < 1.80 m or6 mm if D >1.80 Normal (no bursting disc required) 2 shut-off devices
T7 4 bar 5 mm if D < 1.80 m or 6 mm if D > 1.80 Normal (no bursting disc required) 3 shut-off devices
T8 4 bar 5 mm if D < 1.80 m or 6 mm if D >1.80 Normal (no bursting disc required) Not allowed
T9 4 bar 6 mm Normal (no bursting disc required) Not allowed
T10 4 bar 6 mm Safety relief valve with bursting disc in series Not allowed
T11 6 bar 5 mm if D < 1.80 m or6 mm if D >1.80 Normal (no bursting disc required) 3 shut-off devices
T12 6 bar 5 mm if D <1.80mor6mmif D>1.80 Safety relief valve with bursting disc in series 3 shut-off devices
T13 6 bar 6 mm Normal (no bursting disc required) Not allowed
T14 6 bar 6 mm Safety relief valve with bursting disc in series Not allowed
T15 10 bar 5 mm if D < 1.80 m or 6 mm if D > 1.80 Normal (no bursting disc required) 3 shut-off devices
T16 10bar 5 mm if D < 1.80 m or6 mm if D >1.80 Safety relief valve with bursting disc in series 3 shut-off devices
T17 10 bar 6 mm Normal (no bursting disc required) 3 shut-off devices
T18 10 bar 6 mm Safety relief valve with bursting disc in series 3 shut-off devices
T19 10 bar 6 mm Safety relief valve with bursting disc in series Not allowed
T20 10 bar 8 mm Safety relief valve with bursting disc in series Not allowed
T21 10bar 10 mm Normal no bursting disc required Not allowed
T22 10 bar 10 mm Safety relief valve with bursting disc in series Not allowed
T50 Varies by Gas Varies by Gas Varies by Gas Varies by Gas

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