Hazardous Area Verification Dossier

Demonstrating you're compliant

A hazardous areas verification dossier is a live, legal document that demonstrates your installation is compliant with the relevant standards. The verification dossier should be available to everyone on site. It should be updated as equipment is inspected, new equipment installed or classification changes.

So what should be included?

Below we've outlined what should be included in the verification dossier. Depending on whether your site is predominantly gas or dust or both there will be some minor differences. The information is the minimum requirement for the dossier to be compliant with the requirements of AS/NZS 60079.14.

Site requirements

Area classification documents with drawings showing the classification and extent of the hazardous areas including the zoning

Optional assessment of consequences of ignition (Equipment Protection Levels (EPLs))

Where applicable, gas, vapor or dust classification in relation to the group or subgroup of the electrical equipment

Temperature class or ignition temperature of the gas or vapor involved

The material characteristics including electrical resistivity, the minimum Ignition temperature of the dust cloud, minimum ignition temperature of the dust layer

Minimum ignition energy of the dust cloud

External influences and ambient temperature

Any use of conditions of control for exceptional circumstances

Equipment requirements

Manufacturer’s instructions for selection, installation and initial inspection

Documents for electrical equipment with conditions of use, e.g. for equipment with certificate numbers which have the suffix “X”

Descriptive system document for the intrinsically safe system

Details of any relevant calculation, e.g. for purging rates for instruments or analyser houses

For Group I and New Zealand, manufacturer’s/qualified person’s declaration of conformity where applicable

Installation requirements

Information to ensure correct installation of the equipment provided in a format which is suitable to the personnel responsible for this activity

Documentation relating to the suitability of the equipment for the area and environment to which it will be exposed, e.g. temperature ratings, type of protection, IP rating, corrosion resistance

The plans showing types and details of wiring systems

Records of selection criteria for cable entry systems for compliance with the requirements for the particular type of protection

Drawings and schedules relating to circuit identification

Records of the initial inspection

Installer’s/qualified person’s declaration

Need help with preparing your verification dossier?

Free HAZ Checklists

Verification Dossier Checklist

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