| T-Code |  Min. Test Pressure (bar) | Min. Shell Thickness (mm)** | Pressure Relief Valve | Bottom Outlet Closures |
|---|---|---|---|---|
| T1 | 1.5 | 6 mm* | Normal (without rupture disk) | 2 |
| T2 | 1.5 | 6 mm* | Normal (without rupture disk) | 3 |
| T3 | 2.65 | 6 mm* | Normal (without rupture disk) | 2 |
| T4 | 2.65 | 6 mm* | Normal (without rupture disk) | 3 |
| T5 | 2.65 | 6 mm* | SRV with rupture disk | Not Allowed |
| T6 | 4 | 6 mm* | Normal (without rupture disk) | 2 |
| T7 | 4 | 6 mm* | Normal (without rupture disk) | 3 |
| T8 | 4 | 6 mm | Normal (without rupture disk) | Not Allowed |
| T9 | 4 | 6 mm | Normal (without rupture disk) | Not Allowed |
| T10 | 4 | 6 mm* | SRV with rupture disk | Not Allowed |
| T11 | 6 | 6 mm* | Normal (without rupture disk) | 3 |
| T12 | 6 | 6 mm | SRV with rupture disk | 3 |
| T13 | 6 | 6 mm | Normal (without rupture disk) | Not Allowed |
| T14 | 6 | 6 mm* | SRV with rupture disk | Not Allowed |
| T15 | 10 | 6 mm* | Normal (without rupture disk) | 3 |
| T16 | 10 | 6 mm | SRV with rupture disk | 3 |
| T17 | 10 | 6 mm | Normal (without rupture disk) | 3 |
| T18 | 10 | 6 mm | SRV with rupture disk | 3 |
| T19 | 10 | 6 mm | SRV with rupture disk | Not Allowed |
| T20 | 10 | 8 mm | SRV with rupture disk | Not Allowed |
| T21 | 10 | 10 mm | Normal (without rupture disk) | Not Allowed |
| T22 | 10 | 10 mm | SRV with rupture disk | Not Allowed |
| T23 | Depending on product | Depending on product | Depending on product | Depending on product |
| T24 | Depending on the gas | Depending on the gas | Depending on the gas | Depending on the gas |
| T25 | Depending on the gas (frozen) | Depending on the gas (frozen) | Depending on the gas (frozen) | Depending on the gas (frozen) |
** in reference steel
* 5 mm if diameter of the shell < 1.80 m
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