Download our Gas Detection in Oil and Gas Guide

The oil & gas industry is a breeding ground for potential high risk gas hazards, specifically combustible and toxic gases. For this reason, the handling and detection of dangerous gases is essential in order to prevent explosions, fires, equipment failure or any other accidents.

Whether you’re working downstream or upstream the same gas dangers are present which is why it’s important to prepare for hazards with an effective gas detection program!

Where permanently installed gas detection instruments aren’t available, every worker should ensure that they’re protected by a personal gas detector. An example of this would be a storage vessels or pipelines. Confined spaces are recognised to be one of the most hazardous working environments; pre-entry checks and continuous monitoring are paramount to worker safety.

In the oil and gas industry where production continues 24/7 and conditions can be cold, dark, wet, and noisy, great demands are placed on gas detection equipment. Features such as battery life, local, and remote threat alarms are all important to help maximise safety programmes.

Potential Hazards

  1. Carbon Monoxide
  2. Hydrogen Sulphide
  3. Methane
  4. Nitrogen Oxide
  5. Combustible Gases

In food and beverage markets equipment and personnel must be protected against potentially hazardous gases, combustible gases, toxic and flammable gases. Packaging, refrigerated storage and sanitary processes require the use carbon dioxide, oxygen, refrigeration gases and sanitising gases such as peracetic acid are used.

Continuous fixed gas detection is commonplace in the food and beverage market with gas sensors used around potentially hazardous areas on the site. Typically large food and beverage plants will require fixed systems with beacons and output relays to the likes of a building management system. Areas where there is reduced ventilation are where personal gas detectors are used.

The F-Gas legislation currently dictates that any refrigeration system that holds more than 300kg of refrigerant charge must have a fixed refrigerant gas leak monitoring system installed.

Potential Hazards

  1. Ammonia
  2. Carbon Monoxide
  3. Carbon Dioxide
  4. Hydrogen Chloride
  5. Hydrogen Cyanide
  6. Hydrogen Sulphide
  7. Nitrogen Dioxide
  8. Peracetic Acid
  9. Phosphine
  10. Combustible Gases
  11. Oxygen Deficiency/Enrichment

Download our Gas Detection in Wastewater Guide

Water and wastewater treatment plants are designed to treat all municipal waste and purify water for it to be reused. The process of water purification results in the by-product of harmful combustible and toxic gases which can create hazardous environments that must be monitored on a continuous basis.

Toxic gases also can build up in confined spaces, depleting oxygen and making those locations highly dangerous for plant personnel. a1-cbiss have a portfolio of products which are ideally suited for water treatment systems.

They are designed for all safety needs in unclassified areas, making them resistant to corrosion and highly durable in harsh environments.

Potential Hazards

  1. Ammonia
  2. Carbon Monoxide
  3. Chlorine
  4. Chlorine Dioxide
  5. Hydrogen Chloride
  6. Hydrogen Cyanide
  7. Hydrogen Sulphide
  8. Nitric Oxide
  9. Ozone
  10. Sulphur Dioxide
  11. Volatile Organic Compounds
  12. Combustible Gases
  13. Oxygen Deficiency/Enrichment


Inherently, petrochemical plants are home to a host of hazardous, combustible gases which present significant risks during production. It is paramount that all plant practices, warnings, and emergency procedures are observed at all times.

At any point a large and complex amount of gases, which lead to atmospheric contamination hazards, will be present. With gases such as nitrogen and sulphur present at any time, workers are exposed to the risks of explosion, corrosiveness and asphyxiation. Combined and in a potential enclosed space, these gases pose much more of a threat than they would individually.


  1. Confined Space Entry
  2. Chemical Production
  3. Shutdown and Turnaround
  4. Valve and Flange Checkpoints

Various forms of gas monitoring takes place on power generation sites. Emissions that are emitted to atmosphere are monitored by European legislation. At large combustion plants and energy from waste sites, the Environmental Permitting Regulations, the EA or local council will refer to European Legislation, the Industrial Emissions Directive (IED 2010/75/EU). Continuous emissions monitoring systems are required to measure emissions from chimney-stacks to ensure that plants are compliant, as defined in their site permit.

Gases present on site as a result of processing that are a danger to plant and personnel require gas detection equipment in place. Carbon monoxide, combustible gases, nitrogen dioxide, hydrogen, and sulphur dioxide are just some of the hazardous gases present.

Fuel sources for power generation can vary to include waste products, coal, oil, gas and nuclear power. Regardless of the type of power generating site, fire and other hazards provide significant risk to workers' safety.


  1. Processing and Storage
  2. Power Generation
  3. Environmental
  4. Confined Space Entry