Flammable and toxic Offgas

Recent incidents have occurred in several open cut coal mines where flammable and toxic gases (NOx, SOx, CH4, CO, CO2 and H2S) have been found in areas where normal mining activities are being undertaken. Flammable and toxic gases have been found emitting from blast holes, post blast areas and strata, including spoil dumps and accumulating in the bottom of pits during temperature inversion events. Ignitions of methane have occurred during blasting operations and evidence of spontaneous combustion has been identified with the accompanying noxious gases. Methane gas has also been detected in product coal recovery tunnels, including in the cavity surrounding the coal chutes.

Hazards are evident when personnel and equipment operate in close proximity to these sources of flammable and toxic gases. Mine workers undertaking duties in and around the areas nominated should be made aware of the potential risks, their measurement and controls.

The following information may be useful in alerting mine workers in the characteristics of some the more commonly occurring gases found in open cut mines and their current recognised exposure standards.

With reference to the Coal Mining Safety and Health Regulation 2001 s142 Flammable or toxic gas, it is recommended that all open cut coal mine operators regularly review the mine Safety and Health Management System specifically related to the management of toxic and/or flammable gases on the mine site.

More specifically this review should focus on the effective implementation of the Standard Operating Procedure required under the Coal Mining Safety and Health Regulation 2001 s142.

PHOTON State of the Art Multigas Analyser

Monitoring flammable and toxic gases from open cut coal mines

Our client a large Australian Mining Company completed its mobile analysis laboratory with the acquisition of a PHOTON multigas analyser. The PHOTON belongs to Madur last generation of portable analysers designed for complex multigas applications and harsh process conditions. This PHOTON analyser is equipped with low resolution NDIR (Non Directive Infra Red) and Electrochemical measuring cells for short to medium term testing of Flammable and toxic gases CH4, CO, CO2, O2, H2S and SO2 in process and off gases from mine sites currently in operation and shutdown mine pits.


The  Photon is a multigas analyser and monitoring concept develop by Madur electronics. Madur was initially founded in 1984 in Vienna Austria and is now worldwide recognised manufacturer of reliable and cost effective equipment for gas analysis applications. Since 2013, Madur operates sales, production, service and R&D from their headquarters located in Poland to provide customers the most advanced solutions, the fastest possible with professional services and ongoing technical support.


Environmental Monitoring and Process Control

AquaGas is supporting the global industrial community with high performance environmental and process monitoring systems (Continuous Emissions Monitoring Systems, Air Quality Monitoring Systems, Online process analysers, Water Quality Monitoring Systems) specifically designed and built to meet your application requirements.

WT1 Fence Line Monitoring Solution

Fenceline Monitoring Solution for realtime mapping of physicals, chemicals and biologicals air pollutions.

MADE TO MEASURE” for the growing demand for flexible and affordable air pollution monitoring solutions, the WT1  is a multiparameter Fence Line Monitoring System easily deployable for smart cities mapping, roadside monitoring, air pollution and odours control at industrial sites, remediation sites as well as background air studies and environmental impact assessment. The WT1 Fence Line Monitoring System is designed by RUBIX Senses & Instrumentation for realtime measurement of air quality, noise, odours and vibrations in urban and rural area. 

Autonomous & Wireless, WT1® Watchtower fenceline monitoring system is designed for air pollution monitoring, environmental impact assessment and air quality control applications in urban and industrial areas. WT1® fenceline monitoring system consists in a network of field-based Gas & Odours monitoring stations with high precision sensors for low ppb gas concentrations in ambient air (H2S, RSH, NO2, NH3, SO2 …) in addition to VOC, odours, noise and particulates (from 0,3 to 17 µm). With its cutting edge cloud based data processing system (Rubix Soft SAS), the WT1® provides secured access from PC, Tablets or Phone to realtime reading, average, trends and  mapping of gas concentration with alarms and instrument status. The WT1® also offers key functions for odours surveys, plume prediction and air pollution impact assessment such as the ability to correlate high accuracy measurements in ppm, ppb or OU/M3 with sensory perception from multiple users (inspectors, surveyors or operators) and locations

WT1® fenceline monitoring system complies with

• Odour unit (EN 13725, ASTM E679)

• USEPA ( 40 CFR Part 53)

• EU ( 2008 /50/EC)

  • Scalable monitoring solution

    Modular and scalable, the WT1® fenceline monitoring system network is sized to your needs. Clear and accurate environmental data from Standalone analyser or sensors network  are available source by source, site by site or on a regional scale. Scalable instrument network for cities, large remediation sites, industrial areas, the WT1® fenceline monitoring system provides real-time air pollution data for efficient management of chemicals and olfactory pollution.

  • Realtime impact assessment

    Real Time alarm, customised mapping with online air pollution and nuisances data available from the RUBIX Soft SAS secured website, using any web browser to access safely your data, 24/7, anywhere in the world, the WT1 is a versatile tool for impact assessment and air pollution control in and around construction sites, industrial facilities.

  • Increased air pollution control capabilities

    Correlation with reference instruments can be provided via automatic on line sampling and dynamic olfactometry or field olfactometry and a simple correlation model building.

    Ideally suited to control biofilters, scrubbers and other odour control systems, WT1® fenceline monitoring system is typically designed to measure continuously the concentration of  a wide range of air pollutants and odour precursors including but not limited to  H2S, Mercaptans, Amines, NH2, SO2, CO2, CO, CL, C2HO4, H, HCl, HCN, NH3, O3, NO2, PH3, H2S, O2, SO2, CH4, NO, VOC, PM particles from 0,3 to 17 um.

  • Source identification

    Weather correlated AQM data with Temperature, Relative Humidity, wind speed and direction for Dynamic 3D mapping of dispersion plumes and automatic air pollution report with source identification in rural, industrial and urban areas.

AquaGas Pty Ltd

Integrated systems and Customised Services


AquaGas Pty Ltd is committed to deliver turnkey monitoring solutions customised to today’s industrials needs


    Ammonium, Free or Total Chlorine, Hydrazine, Morphine, Phenol, Sulfates, Colour, Silica, Phosphates (Orthophosphates), Hardness, Aluminium, Chromium VI, Iron, Nickel, Lead, Zinc, TH, Alkalinity, Chlorides, Cyanides, Fluorides, Peracetic acid VFA, CaM…

    SERES® online water quality analyser offers multiple sensor and method configurations. Here are the typical  measuring parameter calibrated on the TOPAZ unit. For other parameters or different measuring ranges (MR), please consult us.


    NO, NO2, NOx, SO2, CO, HCl, CO2, H2O, H2S, NH3, N2O, COS, SO3, CH4, HF, HCN, H2…
    Our strong partnerships implemented with world leading CEMS and Process gas analyser manufacturers as well as local distributors,  provide AquaGas with an extensive range of technologies, diverse measuring principle and sampling methods to design and build cost effective, versatile and high performance systems composed of instruments specifically selected  in consideration of the applications.


    Data Aquisition Software (CDAS) is a fully MCERTS accredited (parts A, B, C1 & C2) real time data acquisition software – now available for touch screens and windows 10. CDAS is customisable and flexible, allowing it to collect raw data from a range of instruments for CEMS


    Isokinetic sampler developed for short to medium term emissions monitoring, fulfilling all the requirements of the dioxins and persistent organic compounds (POPs), PCBs, metals, HCB and fine dust measurement standard within the same sampling train


    O2, CO, CO2, NO, NO2, SO2, H2S, H2, CL2, N2O and VOCs

    Professional flue gas analyser combining high quality of sample conditioning with great measurement accuracy for continuous emissions monitoring or online process measurement of up to 9 gases simultaneously.