T-Codes

Summary of T1 - T22 T-Codes

Please refer to ADR or IMDG code chapters 4.2 for details full details of the T Codes, and for detailed provisions for individual substances.

Portable tank instructions specify the provisions applicable to a tank container when used for the transport of specific hazardous substances. The T codes T1 to T22 specify the minimum test pressure and the minimum shell thickness of the tank vessel (which is referred in mm reference steel), and the pressure relief valve and bottom-opening provisions.

 

PORTABLE TANK INSTRUCTIONS




 

 Download T-Codes (70KB)

These portable tank instructions apply to liquid and solid substances of classes 3 to 9. The general provisions of IMDG Section 4.2.1 and the requirements of Section 6.7.2

Portable Tank

Instruction

Minimum test

pressure (bar)

Minimum shell thickness

(in mm-reference steel)

(see IMDG 6.7.2.4)

Pressure-relief

requirements

(see IMDG 6.7.2.8)

Bottom opening

requirements

(see IMDG

6.7.2.6)

T1

1,5

>or = 6mm

normal

int + ext

T2

1,5

>or = 6mm

normal

Int+ext+cap/blank

T3

2,65

>or = 6mm

normal

int + ext

T4

2,65

>or = 6mm

normal

Int+ext+cap/blank

T5

2,65

>or = 6mm

normal + rupture disc

not allowed

T6

4

>or = 6mm

normal

int + ext

T7

4

>or = 6mm

normal

Int+ext+cap/blank

T8

4

>or = 6mm

normal

not allowed

T9

4

6 mm

normal

not allowed

T10

4

6 mm

normal + rupture disc

not allowed

T11

6

>or = 6mm

normal

Int+ext+cap/blank

T12

6

>or = 6mm

normal + rupture disc

Int+ext+cap/blank

T13

6

6 mm

normal

not allowed

T14

6

6 mm

normal + rupture disc

not allowed

T15

10

>or = 6mm

normal

Int+ext+cap/blank

T16

10

>or = 6mm

normal + rupture disc

Int+ext+cap/blank

T17

10

6 mm

normal

Int+ext+cap/blank

T18

10

6 mm

normal + rupture disc

Int+ext+cap/blank

T19

10

6 mm

normal + rupture disc

not allowed

T20

10

8 mm

normal + rupture disc

not allowed

T21

10

10 mm

normal

not allowed

T22

10

10 mm

normal + rupture disc

not allowed 

T23

Depending on product 

Depending on product  Depending on product  Depending on product 

T50

Depending on gas  Depending on gas  Depending on gas  Depending on gas 

T75

Depending on gas(frozen) Depending on gas(frozen)  Depending on gas(frozen)  Depending on gas(frozen)