| Acronym | Meaning |
| PCL | Primary Coolant Loop |
| SCDP | Simulation Control Data Package |
| IDRD | Internal Data Requirement Description |
| PRSDS | Power Reactant Storage And Distribution System |
| WCLS | Water Coolant Loop System |
| FNT | Failure Notification Telex |
| EDT | Explosive Device System |
| FL | Fail |
| PORB | Production Operations Review Board |
| HYPACE | Hybrid Programmable Attitude Control Electronics |