beautypg.com

Det-Tronics EQP Fire and Gas Detection/Releasing System SAFETY MANUAL User Manual

Page 20

background image

5.1

95-8599

18

TERMS AND DEfINITIONS

DD

Dangerous Detected

DU

Dangerous Undetected

EQP

Eagle Quantum Premier System

EQPSL/SLC

Eagle Quantum Premier Safety Loop

/ Signaling Line Circuit

FMEDA

Failure Mode Effects and

Diagnostics Analysis

HART

Highway Addressable Remote

Transducer

HFT

Hardware Fault Tolerance

PFD

Probability of Failure on Demand

(Probability of Dangerous Failure)

PFDavg

Average Probability of Failure on

Demand

SD

Safe Detected

SFF

Safe Failure Fraction

SIF

Safety Instrumented Function

SIL

Safety Integrity Level

SIS

Safety Instrumented System

SU

Safe Undetected