Stench Gas Emergency Alert System

Stench gas is commonly used in underground ventilation systems as an alert gas for emergency evacuations. The powerful odour can be quickly dispersed throughout an underground mine to alert workers of impending danger.

The MineARC Stench Gas System is designed to suit noisy locations where alarms cannot be heard. Available in either a manual or remotely operated electric configuration, the unit will send a clear and definitive odour in the event of an emergency, indicating the initiation of emergency response procedures.

MineARC also provides anti-stench and wintergreen units, used to neutralise the pungent smell of stench gas once the all-clear has been given, allowing production to re-commence quickly

Electric Stench Gas System

The electric stench gas system is MineARC’s premium range, comprising a twin cylinder stench gas unit and a sub-controller that can be connected through to an existing mine control system or to the optional MineARC Stench Gas Master Controller.

This fully electrical system allows for safe, remote operation of the stench gas units via the sub-controller in the event of an emergency, removing the need for local activation.

The electric stench gas unit (ESGU) allows the remote release of stench gas. A low voltage (24 V dc / 0.9 A) connection is used to control the gas release valve.

Activation status can be remotely monitored via 4-20 mA signals from local pressure sensors. Redundancy is ensured by a manual gas release valve and analogue gauge, allowing the unit to be operated without power.

Electrical connections are made via a multipole plug with IP66 rating when mated.

  • 24V dc (0.9A) connection to drive automatic gas release valve
  • 4-20mA signals provided from pressure sensors
  • Dispersion line venting 10m (33ft) from your location
  • Two 1L stench gas cylinders (100g Ethyl Mercaptan & R134 Propellent)
  • IP66 rated steel housing with reflective signage and viewing window
  • Powder coated red in accordance with ANSI Z535.1
  • Gas release valve & mechanical pressure gauge to locally operate unit if required
  • Stainless steel pipework and valving

The electric sub-controller allows for safe, remote operation of the stench gas units in the event of an emergency, removing the need for local activation.

The MineARC Electric Sub-Controller is capable of connection to most commonly used mine site control systems. Alternatively the sub-controller can be hooked up to the MineARC Master Controller.

  • Drives up to two electric stench gas (ESGU) or anti-stench gas units (EASGU)
  • Operates as a network node
  • Converts networked commands for gas release into a 24 V dc power signal to the valve inside the ESGU
  • Converts pressure signals from the ESGU into a format that can be monitored on the network
  • Provides operational status information locally through LED light indicators
  • Local controls for the release of gas
  • Housed in an IP66 rated (dust and water resistant) steel unit

MineARC’s Master Controller provides a fully comprehensive stench gas network solution. The touch screen Human Machine Interface (HMI) provides an intuitive, easy to use method of remotely monitoring and activating your mine site’s entire electric stench gas system.

The unit is pre-programmed by MineARC Engineers to be used as a “plug-and-play” solution, removing any need for lengthy on-site software configuration and system integration. It is housed within an IP66 rated stainless steel unit.

The master controller constantly monitors your entire network, providing you with real-time system data.

  • Intuitive graphic display, via a 9" high resolution touch screen
  • Data logging
  • System diagnostics and network monitoring
  • Zoned stench gas unit control
  • Pressure and valve status
  • System activation and deactivation

Manual Stench Gas System

MineARC’s standard manual stench gas unit comprises a set of twin gas cylinders housed within a durable steel cabinet with reflective signage, designed specifically for harsh underground conditions.

The stench gas cylinders are manually activated via gas release valves on the top of the exterior housing. Pressure gauges indicate successful release of the gas.

  • Easy installation and simple operation via gas release valves
  • Two 1L Stench Gas cylinders (100g Ethyl Mercaptan & R134 Propellent)
  • Independent operation of cylinders
  • Steel housing with reflective signage and viewing window
  • Pressure gauge to indicate gas levels
  • Stainless steel pipework and valving
  • Tamper proof tags
  • Mounting brackets

MineARC Stench Gas cylinders carry 100g of Ethyl Mercaptan, a colourless organic liquid with a strong odour that, when added to an odourless gas, acts as a pungent warning agent. One MineARC Stench Gas Unit is effective in odourising approximately 1.25 million cubic metres of air throughout an underground mine, operating within a temperature range of 1°C to 54°C. MineARC Stench Gas is a non-flammable substance.

Post Alarm Gas Units

MineARC offers a selection of post-emergency units to compliment the stench gas system. The range consists of anti-stench, an effective stench gas neutralising agent, and wintergreen, an all-clear signal.

Available in both manual and electric configurations, the units can plug directly into a MineARC Sub-Controller for remote activation and monitoring if required.

Anti-stench works as a chemical neutraliser, counteracting the pungent odour of Ethyl Mercaptan. It is recommended that following stench gas activation, all ventilation lines are flushed with MineARC Anti-Stench, in order to neutralise the active scent component of the chemical.

  • Available in both electric and manual models
  • Two 1L anti-stench cylinders
  • Steel housing with reflective signage and viewing window
  • Blue powder coating for easy identification in low light conditions
  • Pressure gauge to indicate gas levels
  • Stainless steel pipework and valving
  • Tamper proof tags
  • Mounting brackets

Wintergreen is intended as an 'all clear' signal, to be used following an emergency to indicate that it is safe to commence production. A pleasant aromatic scent, MineARC Wintergreen 1L cylinders contain 100g of Wintergreen Oil and R134A propellant.

  • Available in both electric and manual models
  • Two 1L Wintergreen cylinders (100g Wintergreen oil and R134A propellant)
  • Steel housing with reflective signage and viewing window
  • Green powder coating for easy identification in low light conditions
  • Pressure gauge to indicate gas levels
  • Stainless steel pipework and valving
  • Tamper proof tags
  • Mounting brackets

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