Hazardous Areas Technical Services

Hazardous Areas Technical Services

Coex Training is a technical organisation providing workplace solutions with a diverse portfolio specialised in Hazardous Areas auditing, classification and design, installation, inspection and testing of equipment in compliance with legislative standards and specifications, particularly AS/NZS 3000 (wiring rules) and AS/NZS 60079 (explosive atmospheres), which is essential for fulfilling your compliance responsibilities.

With international experience in Hazardous Area installations covering onshore and offshore petrochemical industry, underground and surface coal mining, food and beverage, and any industry that may use flammable liquids, gases or combustible dusts, the team at Coex Training gives you confidence that of an impeccable level of safety and compliance for your individual application.

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Hazardous Areas Services

Development of the initial step in Hazardous Area Compliance where our team are experienced in the classification of both gas and dust hazardous areas.

Applying the legislation outlined in AS/NZS 60079.10.1,  AS/NZS 60079.10.2 (or other acceptable foreign standards where suitable) our team will provide you with a Hazardous Area Classification Schedule containing a full report, source of release table and flammable goods properties table.

Our technical drafting team can develop Hazardous Area Drawings, showing zonal extents and the classification of the gas and/or dust.

All Hazardous Area Classifications should be reviewed periodically to ensure that the classification still covers the same areas as the initial classification when changes on site may affect zonal extents

Our capabilities can provide a full Hazardous Area electrical design or a third-party design review on your current design

The electrical design will be completed in compliance with the applicable standards, acts, and regulations, including AS/NZS 60079.14, IEC 60079.14 or Euronorms which  incorporate:

  • Equipment and cable selection
  • Cable Schedules and wiring diagrams
  • Maximum Power Dissipation calculations
  • Descriptive System Documents for Intrinsically Safe circuits
  • Verification Dossier development or updating

The Responsible Person or Technical Persons with Executive Function for Hazardous Areas is not included in the Australian and New Zealand Standards; however, it is part of International Standards (IEC) and covered with other foreign schemes as an industry standard and best practice.

Coex Training believes that this competency is a critical part of ensuring that Maintenance programs and Inspection regimes interlink and cover all necessary requirements, outcomes and actions to maintain a safe and compliant installation.


Electrical equipment requires selection and installation according to the hazardous area electrical design. The hazardous area installation is an electrical installation and needs to be installed and tested in accordance with AS/NZS 3000 as well as the latest edition of the hazardous area standard AS/NZS 60079.14.

Installation of the equipment needs to be carried out according to any manufacturer’s documentation provided with the equipment and any conditions of Certification.

The hazardous area installation needs to be installed by an electrician with an electrical licence for that State and holding the required competency under the electrotechnical training package.

All test results, manuals, operating directives, installation instructions etc. need to be kept in the Hazardous Area Verification Dossier.

It is mandatory to inspect hazardous area installations prior to being put into service and ongoing inspections throughout the life of the plant.

According to AS/NZS 60079.17 there are three “Grades” of inspection and three “Types” of inspection.

The three Grades are:

  • Visual inspections
  • Close inspections
  • Detailed inspections

The three Types of inspection are:

  • Initial inspection
  • Periodic inspection
  • Sample inspection

Our team is experienced domestically and internationally with classification, design, installation, maintenance, and inspection of electrical installations and equipment in hazardous areas which adds depth to the auditing requirement having dealt with best practices on an international scale.

The hazardous area ESO audit needs to be carried out by an electrical engineer or electrician competent in internal auditing and has been accredited by the ESO to hold office as an auditor.

All documentation provided with the Hazardous Area audit is to be added to the Hazardous Area Verification Dossier.

Where equipment is required that does not have Certification suitable for an Australian installation our team can carry out a Conformity Assessment to determine the suitability and provide a full report on the outcome.

Our team will complete the assessment and provide a full report on conformity, if the report shows that there is an ‘equivalent level of safety’ to the current version of AS/NZS 60079.14 or IEX 60079.14, there will be a positive outcome allowing the equipment to be installed in an Australian installation.

The Verification Dossier is the most important aspect of a hazardous area installation where all relevant documentation for that installation is kept and be comprehensible for anybody to access the required information

Our team can manage the creation, implementation, or ongoing utilization of your site Verification Dossier ensuring compliance with all relative legislation.

Coex has a streamlined Verification Dossier template that aligns with AS/NZS60079.14 and AS/NZS60079.17 ensuring full compliance that can be implemented on your asset.

Due to the nature of the Hazardous Area specialized design and installation, a concise maintenance and inspection program needs to be put in place for safety and compliance.

Full compliance prevents the possibility of a dangerous situation that may give rise to a possible explosion.

With outstanding domestic and international experience, our technical team can work with your specialists and key personnel to develop the required programs to ensure overall Hazards Areas compliance.

Coex Training provides nationally recognized training for the following parts of Hazardous Areas:

  • Hazardous Area awareness
  • Hazardous Area refresher
  • Installation, maintenance testing and Inspection
  • Certificate IV in Hazardous Areas
  • Hazardous Area Classification
  • Electrical Design for Hazardous Areas
  • Perform a Conformity Assessment

Our Hazardous Area Technical Training Specialists are still actively engaged with the industry to deliver services within their portfolio of skills, bringing real industry experience into the training room. They understand the competency requirements for a compliant and professional workforce and ensure that the course participants receive training skills and knowledge that is transferable to the workplace.

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Areas of Expertise

Group I

  • Underground coal mining

Group II

  • Surface coal mining
  • On and offshore drilling, processing,
    storage and transport (FPSO)
  • Power stations
  • Sewage treatment plants
  • Chemical process, storage and transport
  • Spray painting booths

Group III

  • Surface coal mines
  • Fertiliser plants
  • Wheat, flour and rice and other organic dust

View Our Hazardous Area Technical Services Booklet

Meet Our Hazardous Areas Specialists

Brad Guy

Brad specialises in all aspects of Hazardous Areas, nationally and internationally, as well as training.

Areas of expertise in Hazardous Areas include Auditing, Classification, Electrical Design, Installation, Inspection, & Conformity Assessments.

Brad is an accredited Category 3 Auditor with the Queensland Electrical Safety Office.

Peter Baesjou

Peter is trained in Hazardous Areas and High Voltage and can deliver training in both.

Having had over 30 years of experience in the electrical field Peter has been involved in most facets of the electrical industry. 

Peter is an expert in instrumentation,
high voltage switching, and
hazardous areas. 

Reach Out to Our Technical Specialists today

International & National

1300 020 626