Combustible, Explosive or Toxic Gas Detection
Gas detection standards provide guidance on the selection, installation, use, and maintenance of hazardous gas detectors. Detectors signal when concentrations of toxic, or combustible gases reach unacceptable levels. The independent watchdog group and regulator, HSE, in Great Britain, has published a guide for The Selection and Use of Flammable Gas Detectors and the gas monitoring equipment supplier, RKI Instruments has a series of application briefs for gas detection in specific applications (ANSI is not responsible for content on external websites).
BS EN 50402:2005+A1:2008
Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen. Requirements on the functional safety of fixed gas detection systems
ANSI/ISA-RP12.13.02-2003 (IEC 61779-6 Mod)
Recommended Practice for the Installation, Operation, and Maintenance of Combustible Gas Detection Instruments
Guidance on the selection, installation, use, and maintenance of electrically operated group II apparatus for the detection and measurement of flammable gases complying with the requirements of IEC 61779-1 to IEC 61779-5 ANSI/ISA-12.13.01 (IEC 61779-1 through 5 Mod). It is a compilation of practical knowledge to assist the user, and applies to apparatus, instruments and systems that indicate the presence of a flammable or potentially explosive mixture of gas or vapour with air by using an electrical signal from a gas sensor to produce a meter reading, to activate a visual or audible pre-set alarm or other device, or any combination of these.
IEC 61779-5 ANSI/ISA-12.13.01 (IEC 61779-1 through 5 Mod)
Performance Requirements for Combustible Gas Detectors
This part of ANSI/ISA-12.13.01-2003 (IEC 61779-1 through 5 Mod) specifies general requirements for construction and testing and describes the test methods that apply to portable, transportable and fixed apparatus for the detection and measurement of flammable gas or vapour concentrations with air. The apparatus, or parts thereof, are intended for use in potentially explosive atmospheres.
OVE/ONORM EN 50402:2009
Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen - Requirements on the functional safety of fixed gas detection systems (english version)
Guide for Combustible Gas Detection as a Method of Protection
Combustible gas detection used for process safety management may also be used to provide protection from explosion or fires by minimizing the possibility of an accumulation of combustible gases reaching ignitable levels.