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T-Codes

 

The below table defines the T-Code or "portable tank instruction" in terms of test pressure, shell thickness, pressure relief set up and bottom outlet arrangement. These T-Code instructions apply to dangerous goods of classes 1 and 3 to 9. Class 2, or non-refrigerated liquified gases are covered by the T50 code.

 

T-Code

Minimum
Shell Thickness ~


Pressure

Relief Provisions

 

Bottom
Outlet Provisions

 
EXSIF T-Code Meter 1.5 Pressure

Minimum Test Pressure (bar) 1.5

 

 
T1 6 mm * SRV only required 2 shut-off devices
T2 6 mm * SRV only required 3 shut-off devices
       
EXSIF T-Code Meter 1.5 Pressure

Minimum Test Pressure (bar) 2.65

 

 
T3 6 mm * SRV only required 2 shut-off devices
T4 6 mm * SRV only required 3 shut-off devices
T5 6 mm * SRV with in series bursting
disc and check gauge
Prohibited
       
EXSIF T-Code Meter 1.5 Pressure

Minimum Test Pressure (bar) 4

 

 
T6 6 mm * SRV only required 2 shut-off devices
T7 6 mm * SRV only required 3 shut-off devices
T8 6 mm * SRV only required Prohibited
T9 6 mm SRV only required Prohibited
T10 6 mm SRV with in series bursting
disc and check gauge
Prohibited
       
EXSIF T-Code Meter 1.5 Pressure

Minimum Test Pressure (bar) 6

 

 
T11 6 mm * SRV only required 3 shut-off devices
T12 6 mm * SRV with in series bursting
disc and check gauge
3 shut-off devices
T13 6 mm SRV only required Prohibited
T14 6 mm SRV with in series bursting
disc and check gauge
Prohibited
       
EXSIF T-Code Meter 1.5 Pressure

Minimum Test Pressure (bar) 10

 

 
T15 6 mm * SRV only required 3 shut-off devices
T16 6 mm *

SRV with in series bursting

disc and check gauge

3 shut-off devices
T17 6 mm SRV only required 3 shut-off devices
T18 6 mm

SRV with in series bursting

disc and check gauge

3 shut-off devices
T19 6 mm

SRV with in series bursting

disc and check gauge

Prohibited
T20 8 mm

SRV with in series bursting

disc and check gauge

Prohibited
T21 10 mm SRV only required Prohibited
T22 10 mm

SRV with in series bursting

disc and check gauge

Prohibited
       
EXSIF T-Code Meter 1.5 Pressure

Minimum Test Pressure Varies by Gas

 

 
T50 Varies by Gas Varies by Gas Varies by Gas
T75 Varies by Gas Varies by Gas Varies by Gas
       
~ In reference steel
* 5 mm if diameter < 1.8m