R
- R
- Radio Frequency Identification (RFID)
- Rafter
- Raised
- Ramp
- Random Error (ASTM E456)
- Random Hardware Failure
- Ransomware
- Rated Load
- Rated Operating Point
- Re-Gasification
- Reactive Maintenance
- Readout Instrumentation
- Recognised Good Practice
- Redundancy (IEV 191-15-01)
- Reference Surface
- Relative Sensitivity (IEC 60050-311)
- Reliability
- Remanent Life
- Remote Alarm
- Repeatability (ASTM E456) / Repeatability Conditions (ASTM E456)
- Reset
- Residual Current
- Residual Risk
- Responsible Person
- Rest Platform
- Rim Seal
- Rim Space
- Rim Vent
- Ring Beam
- Rippling
- Riser
- Risk
- Risk Analysis (API 581)
- Risk Assessment (API 581)
- Risk Assessment Matrix
- Risk Assessment Methodology
- Risk Based Inspection
- Risk Classification
- Risk Management (API 581)
- Risk Reduction Measure
- Rogue (Defective) Item
- Roll-Over
- Roof Drain
- Roof Leg