| Acronym | Meaning |
 | OBS | Operational Bioinstrumentation System |
| PSI | Pounds Per Square Inch (Static Pressure) |
| PRCB | ProgramReview Control Board |
| SLP | ERNO Spacelab Program Office |
| TLV | Threshold Limit Value |
| NIC | NNIC Not In Contract |
| SDP | Software Development Plan |
| TRS | Tug Rotational System |
| IPS | IRR InsPection Rejection Report |
| TSP | Test Software Program |
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