Your hazardous area work, quoted from the brief.
Send us the brief: drawings, an old classification, your client's scope, or a few lines about what's changed. If you're not sure what you need, start with a site assessment.
Send us the brief and whatever records you have. Within three business days you'll have a fixed scope, price and dates. If a job can't be priced without seeing the site, we'll say so and suggest a site assessment first.
Hazardous Area Classification, gas and dust
Know where the zones are, and the protection level equipment needs in each one.
What it is
An engineering study of where explosive atmospheres can occur on your site, to AS/NZS IEC 60079.10.1 for gas and AS/NZS 60079.10.2 for dust. It is the basis for selecting and installing equipment on sites that handle flammable gases, vapours, liquids or combustible dusts.
When you need it
- New plant, or changes to an existing one
- After process changes that affect the materials handled
- When an audit finds the classification missing or out of date
- Before installing electrical equipment in areas that may be hazardous
- When the site has gas or dust hazardous areas that have never been classified
What's involved
We work through the process, the material properties, the ventilation and the sources of release, on site where the job needs it. The quote says whether a visit is included. Every zone is worked to the current standards and to how your plant runs.
What you end up with
Drawings showing every zone and its extent, a report recording the basis of classification, the source schedule, and the equipment requirement for each zone. For dust, the housekeeping the zones depend on is set out as well.
Dust Hazard Analysis
Know the explosion risk inside your dust-handling equipment, and the protection each item needs.
What it is
A systematic review of the fire, flash fire and explosion hazards of combustible dust inside your process equipment, using the method in NFPA 660. The dust zones in the rooms around it come from the hazardous area classification.
When you need it
- Sites that handle combustible dusts: grain, flour, sugar, wood, metal and chemical powders
- When an insurer, auditor or regulator asks for one
- When dust collectors, mills, dryers or silos are added or changed
What's involved
We look at the process, the dusts and their test data, and each item of equipment in turn: the atmosphere inside it, the credible ignition sources, the consequence, and how an explosion could travel to connected equipment. Where protection is needed, we specify its performance: venting, suppression, isolation, containment or inerting. The protection supplier designs and supplies the system. Where your dust hasn't been tested, we arrange sampling and laboratory testing.
What you end up with
A DHA report with a risk register for each item of equipment, vent sizing calculations where venting is the protection, an isolation schedule and the maintenance requirements for the protection.
Pricing note
If dust testing is needed, it's scoped in the quote, and the dates allow for the laboratory's lead time.
Verification Dossier
The record every hazardous area installation needs, set up so your team can keep it.
What it is
The set of documents showing that the electrical equipment and installation suit the hazardous area classification (AS/NZS 60079.14).
When you need it
- After installing equipment in hazardous areas
- Before commissioning
- Before an audit or regulatory inspection
- When an insurer asks for evidence
- When you take over a site with incomplete records
What's involved
We work from the classification, your equipment list and the certificates. Each item is set against its zone: the protection level, group and temperature class or maximum surface temperature it needs, its certificate, and any specific conditions of use. We set out the inspection regime under AS/NZS 60079.17. Your inspector records the inspection results in the dossier.
What you end up with
The dossier, an equipment register set against the zones, the inspection regime, record templates for your inspector, and a list of the gaps in the records.
Pricing note
Priced from your equipment list and the state of the existing records.
Ongoing Support
Keep the verification dossier and the inspection regime current as the plant changes.
What it is
On a monthly retainer, we check that the periodic inspections are done to the right grade and schedule, track defects to closure, update the dossier, and look at each change you tell us about. When a change needs the classification revised, we quote the revision.
Pricing note
A monthly retainer, sized to the site and agreed before it starts.
Start with a site assessment.
If the records are old, missing or disputed, or you're not sure what the site needs, a site assessment gives you the picture first, at a fixed price.
$8,800 + GST, fixed. One site, two days on site.*
*Travel at cost. Larger sites are quoted from the brief.
You'll know where the site stands, what gaps exist and why they matter, and you'll have a fixed price for our part of what follows.
- Document review before the visit
- Previous assessments, equipment lists, P&IDs and operating procedures, so the time on site goes further.
- A walkthrough with your operations team
- Gas and vapour sources of release, dust generation points, collection systems, ignition sources, housekeeping, and how the plant runs day to day.
- Equipment and its suitability
- The equipment we see on the walkthrough, what its marking shows against the zone, and what needs verifying.
- Gaps against the standards
- Where the site differs from the AS/NZS 60079 series, why each gap matters, and how serious it is.
- A written report within a week of the visit
- A gap register, the status of each area, and how serious each gap is.
- One round of comments
- Your questions on the report are answered and the report is updated once.
What the work looked like on site.
Facilities we've worked with, and what the work involved.
Want to know where you stand?
Tell us what's going on at your site. You'll have a fixed scope, price and dates within three business days. Or send us your existing classification for a free review.
Just a straight answer.
Zero Industries
8 Percy Street
Bellerive, Tasmania
Acknowledgement of Country. Zero Industries recognises the First Peoples of this nation and their ongoing connection to culture and country. We acknowledge First Nations Peoples as the Traditional Owners, Custodians and Lore Keepers of the world's oldest living culture and pay respects to their Elders past, present and emerging.
Zero Industries is a trading name of Trav Elec Pty Ltd as trustee for the Stewart Family Trust.
© 2026 Zero Industries