| Acronym | Meaning |
| DC | Distribution Control Assembly |
| ORTHOG | Orthogonal |
| SEICO | System Engineering Instrumentation |
| CPL | Couple |
| WUCF | Work Unit Code File |
| RFC | Request For Change Revolution |
| DP | Double Pole |
| PIL | Procurement Instrument Identification |
| MRC | Measurement Requirements Committee |
| O&P | Operations And Procedures |