| Id | Activity | Value | Uom | Description | Remarks | Source |
| 21 | Reinstalling | ○ | ○ | Time needed to restore other mechanical connections: see dedicated table | expert judgment | |
| 22 | Leak test | 0.50 | h | Time needed to connect the high pressure nitrogen generator | expert judgment | |
| 23 | Leak test | 1.10 | ○ | Leak test pressure to operating pressure ratio | expert judgment | |
| 24 | Leak test | 1,400.00 | Sm3/h | High pressure nitrogen flow rate | TO BE DEFINED BASED ON PROJECT | PROJECT SOURCE |
| 25 | Leak test | 0.25 | h/conn. | Time needed to check each flange for leaks after the test pressure is achieved | expert judgment | |
| 26 | Air Removal | 0.50 | h | Time needed to connect the nitrogen generator | expert judgment | |
| 27 | Air Removal | 0.21 | ○ | Initial oxygen concentration (in case leak test has not been performed) | expert judgment | |
| 28 | Air Removal | 0.03 | ○ | Target oxygen concentration | expert judgment | |
| 29 | Air Removal | 2.00 | ○ | Pressurization pressure (applicable to purging by pressurization/depr. cycles) | Assumed equal to Purging | expert judgment |
| 30 | Air Removal | 1.00 | ○ | Discharge pressure (applicable to purging by pressurization/depr. cycles) | Assumed equal to Purging | expert judgment |
| 31 | Air Removal | 1,400.00 | ○ | Nitrogen generator flow rate | Assumed equal to Purging | expert judgment 342101BPST02508 34210ABPRV02054 |
| 32 | Commissioning & Start up | 1.00 | h | Temperature restoring time | expert judgment | |
| 33 | Commissioning & Start up | 0.50 | h | Pressure restoring time | Assumed equal to Depressurization time | expert judgment |
| 34 | Commissioning & Start up | ○ | ○ | Level restoring time | Assumed equal to Draining time | expert judgment |
| 35 | ○ | 2.00 | ○ | Maximum numbers of crews working in parallel for isolation/blinding | expert judgment | |
| 36 | ○ | 0.80 | ○ | Efficiency of maintenance crew | Not applied to essentially labor-free activities (i.e. Cool down and Ventilation) | expert judgment |
| 37 | Item conveyance to workshop | 1.00 | h | Loading / Unloading | expert judgment | |
| 38 | Item conveyance to workshop | 1.00 | h | Travel to WS | expert judgment |