IEC 60079-29-3:2014

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Gas detection unique features
6 Functional safety management
7 General requirements
8 Gas detection unique requirements
9 Alternative control units (logic solvers)
10 Factory acceptance testing
11 Installation and commissioning
12 System validation
13 Operation and maintenance
14 System modification
15 System decommissioning
16 Documentation
Annex A (informative) - Typical Applications
Annex B (informative) - Cross references between standards
Annex C (informative) - Transformation of requirements
Bibliography

IEC 60079-29-3:2014 gives guidance for the design and implementation of a fixed gas detection system, including associated and/or peripheral gas detection equipment, for the detection of flammable gases/vapours and oxygen when used in a safety-related application in accordance with IEC 61508 and IEC 61511. This International standard also applies to the detection of toxic gases. Other parts of this international standard and pertinent local, national and international standards separately specify the performance requirements of a gas detector and a gas detection control unit (logic solver). These standards are commonly known as Metrological Performance Standards and are concerned with the accuracy of the measured value, the overall system performance, but not the device or system integrity with respect to the safety function. This international standard applies to the integrity of the safety function. Keywords: fixed gas detection system, flammable gases/vapours and Oxygen, detection of toxic gases

This publication is to be read in conjunction with IEC 60079-0:2011, IEC 60079-29-1:2007, IEC 60079-29-2:2007 and IEC 60079-29-4:2009