SAFETY MANUAL

5.1 95-859914
Figure 3A—X3301 Input in a Typical Low Demand Application
PIRECL
ECLIPSE GAS
DETECTOR
Simplex EQ3xxx
EQP SAFETY
CONTROLLER*
EQ3730EDIO
EQP SAFETY
EDIO**
VALV E
λDU = 132
T1 = 1 YEAR
PFDavg = 0.58 x 10
-3
λDU = 87.5 + 22.8
T1 = 1 YEAR
PFDavg = (0.38 x 10
-3
+ 0.1 x 10
-3
)
λDU = 21.8
T1 = 1 YEAR
PFDavg = 0.1 x 10
-3
λDU Valve***
and
Power Supply
λDU IS FAILURE RATE PER 10
9
HOURS, T P OF 1 YEAR = 8760 HOURS, PFD avg IS THE PROBABILITY OF FAILURE ON DEMAND.
PFDavg = Σ (1/2 • T1 • λDU)
*Includes Worst Case Safety Communication
(
λDU = 22.8, PFDavg = 0.1 x 10
-3
)
**Single Output Configuration, Monitored for Opens
***See note in Calculating PFD for Low Demand Applications
Figure 3B—PIRECL Input in a Typical Low Demand Application
EQ3730EDIO
EQP SAFETY
EDIO*
SWITCH
Simplex EQ3xxx
EQP SAFETY
CONTROLLER**
EQ3730EDIO
EQP SAFETY
EDIO***
VALV E
λDU = 0.68
T1 = 1 YEAR
PFDavg = 0.003 x 10
-3
λDU Switch
λDU = 87.5 + 22.8
T1 = 1 YEAR
PFDavg = (0.38 x 10
-3
+ 0.1 x 10
-3
)
λDU = 21.8
T1 = 1 YEAR
PFDavg = 0.1 x 10
-3
λDU Valve****
and
Power Supply
λDU IS FAILURE RATE PER 10
9
HOURS, T P OF 1 YEAR = 8760 HOURS, PFD avg IS THE PROBABILITY OF FAILURE ON DEMAND.
PFDavg = Σ (1/2 • T1 • λDU)
* Single Input Configuration with Open & Short Monitoring.
λDU for Components Common to both Inputs
and Outputs Contained in EDIO and Output
Calculation
** Includes Worst Case Safety Communication
(
λDU = 22.8, PFDavg = 0.1 x 10
-3
)
***Single Output Configuration, Monitored for Opens
****See note in Calculating PFD for Low Demand Applications
Figure 3C—EDIO Input in a Typical Low Demand Application
X3301
IR FLAME
DETECTOR
Simplex EQ3xxx
EQP SAFETY
CONTROLLER*
EQ3730EDIO
EQP SAFETY
EDIO**
VALVE
λDU = 133
T1 = 1 YEAR
PFDavg = 0.58 x 10
-3
λDU = 87.5 + 22.8
T1 = 1 YEAR
PFDavg = (0.38 x 10
-3
+ 0.1 x 10
-3
)
λDU = 21.8
T1 = 1 YEAR
PFDavg = 0.1 x 10
-3
λDU Valve***
and
Power Supply
λDU IS FAILURE RATE PER 10
9
HOURS, T P OF 1 YEAR = 8760 HOURS, PFD avg IS THE PROBABILITY OF FAILURE ON DEMAND.
PFDavg = Σ (1/2 • T1 • λDU)
*Includes Worst Case Safety Communication
(
λDU = 22.8, PFDavg = 0.1 x 10
-3
)
**Single Output Configuration, Monitored for Opens
***See note in Calculating PFD for Low Demand Applications