| Acronym | Meaning |
![](file.png) | SSIP | Systems Software Interface Processing |
![](file.png) | CST | Contract Supplemental Tooling |
![](file.png) | POP | Prelaunch Operations Plan |
![](file.png) | IOE | Input/Output Error Log Table |
![](file.png) | IHX | Interloop Heat Exchanger |
![](file.png) | OCS | Onboard Checkout System |
![](file.png) | TYP | Typical |
![](file.png) | TPAD | Trunnion Pin Attachment Device |
![](file.png) | DRD | DetailedRequirementsDocument |
![](file.png) | VAN | USNS Vanguard (STDN) |