| Acronym | Meaning |
| STS | Structural Transition Section |
| RADCC | Radiation Control Center |
| PDL | Pocket Dosimeter-Low |
| MCIU | Manipulator Controller Interface Unit |
| PDU | Pulse Detection Unit |
| TTC | Tunnel Thermal Control |
| MTBM | Mean Time Between Maintenance |
| PDP | Preliminary Definition Plan |
| PMC | Payload Monitoring And Control |
| SP-OSO | Off-Site Offices (KSC Shuttle) |