| Acronym | Meaning |
| IPS | IRD Information Requirements Document |
| CRB | Change Review Board |
| UDS | Universal Documentation System |
| SMS | Synchronous Meteorological Satellite |
| SIT | Situation |
| HGDS | Hazardous Gas Detection System |
| MTO | Maximum Time Out |
| SFU | Standard Firing Unit |
| SOCA | R Shuttle Operational Capability Assessment Report |
| PIC | Pyro Initiator Controller |