List of Abbreviations
| AI/O | Analog input/output |
| ALARP | As low as reasonably practicable |
| BPCS | Basic plant control system |
| C&I | Control and instrumentation (engineering) |
| CCF | Common cause failure |
| CRC | Cyclic redundancy check |
| DC (in SIS) | Diagnostic coverage (in SIS) |
| DCS | Distributed control system |
| DDT | Derived data type |
| DEP | Design and engineering practice |
| DI/O | Digital input/output |
| EDT | Elementary data type |
| E/E/PE | Electrical/electronics/programmable electronics |
| Table Continued | |
| E&I | Electrical and instrumentation |
| EMI | Electromagnetic interference |
| ESD | Emergency shutdown system or electro static disturbance |
| ET(A) | Event tree (analysis) |
| EUC | Equipment under control |
| FBD | Functional block diagram |
| FGS | Fire and ... |
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