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T-Codes

Portable Tank Regulations

These portable tank regulations apply to hazardous materials of Classes 3 through 9 that are transported in portable tanks.

T-Code	Minimum Test Pressure (bar)	Minimum Shell Thickness	Pressure-Relief Requirements	Bottom Opening Requirements
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	6mm	normal	Not Allowed
T10	4	6mm	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	6mm	normal	Not Allowed
T14	6	6mm	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	6mm	normal	Int + Ext + cap/blank
T18	10	6mm	normal + rupture disc	Int + Ext + cap/blank
T19	10	6mm	normal + rupture disc	Not Allowed
T20	10	8mm	normal + rupture disc	Not Allowed
T21	10	10mm	normal	Not Allowed
T22	10	10mm	normal + rupture disc	Not Allowed

Additional special provisions may apply to certain products through TP Notes.