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The listing of IMO Types has been replaced by the “T” code system.

The listing of IMO Types has been replaced by the “T” code system.

T-Code specify the test pressure, shell thickness, pressure relief set up and bottom/top outlet arrangement. T-Code instructions apply to dangerous goods of classes 1 and 3 to 9. Class 2.
 

T-Code

Minimum Test Pressure (bar)

Minimum Shell Thickness

Pressure-Relief Requirements

Bottom Opening Requirements

T1

1.5

> or = 6mm

normal

2 shut-off devices (Int + Ext)

T2

1.5

> or = 6mm

normal

3 shut-off devices (Int + Ext + cap/blank)

T3

2.65

> or = 6mm

normal

2 shut-off devices (Int + Ext)

T4

2.65

> or = 6mm

normal

3 shut-off devices (Int + Ext + cap/blank)

T5

2.65

> or = 6mm

normal + rupture disc

Not Allowed

T6

4

> or = 6mm

normal

2 shut-off devices (Int + Ext)

T7

4

> or = 6mm

normal

3 shut-off devices (Int + Ext + cap/blank)

T8

4

> or = 6mm

normal

Not Allowed

T9

4

6mm

normal

Not Allowed

T10

4

6mm

normal + rupture disc

Not Allowed

T11

6

> or = 6mm

normal

3 shut-off devices (Int + Ext + cap/blank)

T12

6

> or = 6mm

normal + rupture disc

3 shut-off devices (Int + Ext + cap/blank)

T13

6

6mm

normal

Not Allowed

T14

6

6mm

normal + rupture disc

Not Allowed

T15

10

>or = 6mm

normal

3 shut-off devices (Int + Ext + cap/blank)

T16

10

> or = 6mm

normal + rupture disc

<3 shut-off devices (Int + Ext + cap/blank)/td>

T17

10

6mm

normal

3 shut-off devices (Int + Ext + cap/blank)

T18

10

6mm

normal + rupture disc

Not Allowed

T19

10

6mm

normal + rupture disc

3 shut-off devices (Int + Ext + cap/blank)

T20

10

8mm

normal + rupture disc

Not Allowed

T21

10

10mm

normal

Not Allowed

T22

10

10mm

normal + rupture disc

Not Allowed