Det-Tronics EQP Fire and Gas Detection/Releasing System SAFETY MANUAL - Manual (Page 4)

5.1 95-8599 2
The safety related functions of the EQP Safety System
include the following:
– Trouble annunciation for compromised safety function
by de-energizing the Controller’s Trouble relay
– Digital input for lockout of inhibits.
The EQP Safety System employs a 1oo1D (i.e. 1 out of
1 with diagnostics) architecture to achieve SIL 2. EQP
Safety Controllers may be used in redundant mode to
increase system availability, but this is not required for
the safety-related performance of the system.
Configuring and programming the EQP Safety System
must be via a software program known as Safety System
Software (S 3 ).
In addition to completing the actions specifically related
to the EQP Safety System, it is necessary to satisfy the
wider requirements of IEC 61508. This includes such
elements within the framework of the safety lifecycle,
such as hazard and risk analysis and defining the safety
instrumented function. This work must be carried out
through appropriate and competent Safety Management
procedures and staff.
DOCUMENT STRUCTURE
This Safety Manual describes the actions that must
be taken to use the Det-Tronics EQP Safety System in
safety-related applications. The main sections are as
follows:
Introduction
Product Overview gives an overview of the Det-Tronics
product range in general and the EQP Safety products in
particular.
Proof Testing describes the proof testing that is
necessary.
Suitable Applications describes the use of the
Det-Tronics EQP Safety System in practical applications.
Included are failure rate data and PFDavg calculations.
Appendix A provides a summary of the essential data
for safety applications for the Det-Tronics EQP Safety
System.
Appendix B gives logic instructions and their restrictions
for low demand SIL 2 applications.
PRODUCT OVERVIEW
EQP SYSTEM
The EQP System (on which the Det-Tronics EQP Safety
System is based) was originally developed to meet the
requirements of industrial fire and gas detection and
mitigation. The system comprises (see Figure 1):
• Input / output modules
• Field devices for fire and gas detection
• Controllers which can be programmed to carry out the
control of the fire and gas system
• Power supplies and other miscellaneous hardware
• S
3 software which is used to configure the system and
to generate the logic programs which will be run by
the Controllers
• A proprietary protocol known as Eagle Quantum
Premier Safety Loop (EQPSL), which provides
communication between field devices and the
Controllers.
Note
For additional information regarding set-up and
installation of the eQP system, refer to the eQP
system manual, form number 95-8533.
EQP SAfETY SYSTEM
The Det-Tronics EQP Safety System uses the following
specifically developed components (see Figure 2):
• EQ3XXX – EQP Controller
• EQ3730EDIO – Enhanced Discrete Input/Output
(EDIO) Module
• EQ3710AIM – Analog Input Module
• X3301 – Multispectrum IR Flame Detector
• PIRECL – Infrared Gas Detector
The data required to establish the suitability of the EQP
Safety System for safety-related applications is given in
Appendix A of this Safety Manual.
EQP Safety System components and standard
components can be used together. The non-safety
certified components are classed as non-interfering. A
list of all the devices available for the EQP system is
maintained at www.det-tronics.com and is shown below.