Advitech offers a range of specialist services in hazardous area assessment and Hazardous Area Classification (HAC) for gas and dust atmospheres.
Our process engineers are formally trained and competent in the management of hazardous areas. We can manage the entire HAC process from start to finish, improving the safety of your operation and ensuring legislative requirements are met.
Manufacturing, mining and processing facilities commonly generate, handle and store flammable gases, vapours, liquids and combustible dusts. The area in which an ignition source and explosive atmosphere could be present is known as a hazardous area. We have worked closely and successfully with operators in these sectors to ensure compliance with hazardous area Acts, Regulations and Standards including the AS/NZS 4761 series. Ultimately, we help our clients improve the safety of personnel, plant, equipment and environment within hazardous areas across their sites.
- Installation verification auditing against relevant State legislation, guidelines and Australian Standards for installed equipment.
- Facilitation of risk assessments to determine if safety levels need to be altered depending on the level of risk to human life, equipment, property and the environment.
- Advice and recommendation of actions by our experienced process engineers and accredited dangerous goods consultants to improve safety and compliance.
- Engineering drafting to prepare hazardous area classification drawings to support site classification.
- Preparation of hazardous area verification dossiers.
- Computational fluid dynamics (CFD) modelling and simulation for more detailed review of the probable extent of hazardous zones (explained in more detail below).
- Hazardous Area Classification Consultants
- Approved Hazard Specialists under NSW State Environmental Planning Policy (Three Ports SEPP) framework
- Environmental Associate Auditor with RABQSA International
- Australasian Institute of Dangerous Goods Consultants (AIDGC)
- Mine ventilation
- Coal-upgrading and handling facilities
- Chemical facilities
- Gas transmission
- Oil and gas
- Manufacturing plants
- Waste recovery facilities
- Food processing
- Fibreglass manufacturing such as pools and spas
- Hazardous area inspection and classification for a coal reclaim tunnel
- Risk assessment associated with the safety of gas meters for the ACT Government
- Classification of hazardous areas for a University research and development facility
- Classification of hazardous areas for a proposed major coal mine
- Review of hazardous areas across multiple sites for a utilities provider
- Classification of hazardous areas and preparation of drawings for a waste recovery facility
- Goaf drainage flare plant hazardous area classification for an underground mine
- Hazardous area inspection and classification for a floating offshore oil and gas exploration facility
In special circumstances, we also take hazardous area assessment and HAC to the next level through Computational Fluid Dynamics (CFD) modelling. CFD can add substantial value over HAC alone, including the potential to enable significant long-term cost benefits where process specific zoning applies.
CFD is a recognised engineering calculation that allows a more detailed review of the probable extent of potential hazardous zones, producing more refined (potentially smaller or fewer) zone areas, and thereby reducing the need for protected electrical equipment.
CFD is the science of predicting fluid flow, heat and mass transfer, chemical reactions and related phenomena by solving the mathematical equations that govern these processes.
A classified hazardous area establishes a legal requirement for the site owner to acquire suitable electrically protected equipment for the defined area. This can represent a significant capital outlay and ongoing maintenance costs.
Undertaking CFD can achieve a number of outcomes:
- Visually show the outputs of a HAC compliant result
- Help justify smaller hazardous area zones where electrically protected equipment is required
- Reduce the initial capital cost of electrical equipment (as fewer “protected” items may be required)
- Reduce the overall life cycle cost as there is less equipment subject to a strict maintenance and inspection regime
- Be regarded as a suitable tool for use by an expert witness in a legal context.
Our process engineers have the skills to identify when standard HAC one-dimensional calculations on their own are insufficient for your specific situation. The needs-analysis process includes a detailed cost-benefit analysis to ensure an investment in CFD modelling would be worthwhile. Our process engineers provide all the detailed information required to prepare appropriate CFD models.