Plants change.
Your hazardous area classification should keep up.
Gas and dust hazardous areas, classified against the plant as it's built and run.
Tell us what's changed or what you've been asked for. We'll come back within three business days with a fixed scope, price and dates. Or call 1300 690 102.
When the plant has moved on and the paperwork hasn't.
New equipment going in. A change of material. An auditor asking for a DHA. An insurer's requirement. A contractor who needs zone drawings before they can build.
Or a classification written years ago that no longer describes the plant you run.
Someone has to sign off on it, and it's hard to stand behind a document that doesn't match the site.
Zones you can stand behind.
We start from the plant, not the paperwork. Every zone is worked from your materials, release sources, ventilation and operating states.
And if the answer is that you need less than you thought, we'll tell you.
Most of our work comes from clients and partners we've already delivered for.
“Zero Industries provided us with a clear, actionable plan to improve our dust management. Their approach was methodical yet practical, helping us enhance safety while maintaining productivity.”
Operations Manager, CopRice
“Their thorough peer review of an existing assessment and practical recommendations have significantly improved our laboratory safety initiatives.”
Facilities Manager, CSIRO
From uncertainty to clarity.
Send the brief.
Send whatever you have: drawings, an old classification, your client's scope, or a few lines about what's changed.
Get a fixed quote.
What's included, what it costs and when it's done, in writing. If we need to see something first, we'll say so.
Get records you can sign off.
Where the job needs a visit, we walk the plant with the people who run it. You get drawings and a report your team can sign off and work from.
Not sure what you need?
Start with a site assessment. Two days on site, a written report within a week, and a fixed price for our part of anything that follows.
*One site. Travel at cost. Larger sites are quoted from the brief.
Already have a classification?
Send it to us. We'll tell you in writing whether it still matches the current standards and your plant as you describe it. If we find something that matters, we'll say so plainly, whether or not you work with us. Free for one site, within five business days.
It's a read of the documents you send. It isn't a classification or a sign-off.
Records that match your site.
- Drawings and a report, with the reasoning for every zone recorded.
- For every zone: the gas or dust group, the temperature class or maximum surface temperature, and the equipment protection level.
- Ex equipment only where the zones call for it.
When the next auditor, insurer or contractor asks, you answer from the documents. When the plant changes again, it's a revision, not a restart.
What an out-of-date classification costs.
Time.
A contractor waiting on zone drawings before they can start.
Money.
Ex equipment bought for the wrong zone, or missing where it's needed.
Sign-off.
Your name on records that describe a plant you no longer run.
Your sector, gas and dust.
Food & Dairy
Flour, sugar, milk powder and coffee on one side of the plant. Ammonia refrigeration, biogas, and gas trains to boilers on the other. We classify both, so the site has one set of records.
Water & Wastewater
Digester gas at sewage treatment plants, and the electrical installations serving it. We classify the plant and set up the verification dossiers for the installed equipment.
Chemical
Flammable gases, solvents and liquids. Each release source is worked from first principles, and flammable liquid storage is assessed under AS 1940.
Pharmaceutical
API powders, excipients and nutraceutical ingredients, and the solvents used alongside them. Where powders and solvents share a mixing or packing room, both are classified together.
Wood & Paper
Paper dust in recycling and converting, and wood dust in sawmills and panel plants. The process line is assessed as one connected system, from pick-up points to collectors.
Metal Processing
Aluminium, magnesium and other reactive metal dusts have ignition sensitivities that differ from organic dusts. The dust group, the surface temperature limits and the protection are set from test data on your own material.
What you can ask us for.
We classify gas and dust hazardous areas for operating plants in food and dairy, water and wastewater, chemical, pharmaceutical, wood and paper, and metal processing. We also analyse dust hazards, set up verification dossiers, provide ongoing support and run site assessments. Each job is quoted at a fixed price before it starts.
Hazardous Area Classification, gas and dust
The zones on your site, worked from how the plant runs.
You'll know where each zone is, the equipment protection level it needs, and where the area isn't hazardous.
Quoted from your brief and drawings. If we need to see the site before we can price it, we'll say so.
Dust Hazard Analysis
The explosion risk inside your dust-handling equipment.
Each item of equipment is assessed. Where protection is needed, we specify its performance: venting, suppression, isolation, containment or inerting. The supplier designs and supplies it.
Quoted from your brief. If dust testing is needed, it's scoped in the quote.
Verification Dossier
The record every hazardous area installation needs.
Each item of equipment set against its zone, with its certificate, its conditions of use and the inspection regime. Your inspector records the results in it.
Priced from your equipment list and the state of the existing records.
Ongoing Support
The dossier and inspection regime kept current as the plant changes.
We check that inspections are done, track defects to closure and look at each change you tell us about. When a change needs the classification revised, we quote it.
A monthly retainer, sized to the site.
Bringing us in on a project?
Contractors, engineering firms and equipment suppliers bring us in on their jobs. Send us the scope. You'll get a fixed fee to include in your tender, and drawings and a report your client keeps.
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