Mining FIFO Worker Accommodation Camp HVAC Duct Guide — Pilbara, Bowen, Surat, Galilee, Goldfields, Remote Construction Village

Why the FIFO accommodation village is the most underrated HVAC scope in mining

HVAC engineers who walk onto their first mining FIFO accommodation village project tend to treat it as a residential job. It is not. A FIFO village of 1,000 to 3,000 rooms is one of the most regulated and most demanding HVAC scopes in Australian construction because it stacks residential, commercial, industrial, food service, healthcare and mining-site frameworks on a single footprint that has to deliver continuous service 24 hours a day, 365 days a year, often hundreds of kilometres from the nearest urban centre. The bedroom blocks are NCC Class 3 hotel-style accommodation under the National Construction Code Volume 1. The commercial kitchen and mess hall feeding 1,000 to 3,000 workers across three meal sittings is NCC Class 9b assembly with FSANZ Food Safety Standards 4.2.1 to 4.2.4 governing every surface, every airflow direction and every grease-extraction duct. The central laundry processing 3,000 to 5,000 kilograms of work clothes and bedding per day is essentially a small industrial laundry under AS 1668.2 and NFPA 660 combustible dust assessment for the lint accumulation. The medical clinic is governed by AS/NZS 4187 sterile services, ASHRAE Standard 170 for healthcare ventilation, and the AHPRA practitioner registration scope of the resident medical staff. The BESS Li-ion battery plant powering the village overnight is governed by AS/NZS 5139 and NFPA 855. The diesel generator backup is AS/NZS 60079 Zone 1 hazardous area at the fuelling station and tank breather. The active mine workshop on the lease side adds AS 3957 dust hazardous area for the iron ore, coal or gold dust drift and AS/NZS 60079 Zone 1 for the acetylene cylinder storage and welding bay. The whole installation is then audited by the mining operator's contract HSE manager (BHP, Rio Tinto, Fortescue, Newmont, AngloGold Ashanti, Northern Star, IGO, Whitehaven, New Hope, Stanmore, Yancoal, BMA, Bravus) against contractor management standards that are often more stringent than the underlying regulation.

The reason the scope is so dense is that the FIFO village is, in regulatory terms, simultaneously residential and industrial. The worker sleeps there. The worker eats there. The worker uses medical, recreation and laundry there. But the worker also passes between the village and the active mining operation on a 12-hour shift cycle, and the village HVAC has to manage that boundary — capturing the dust drift from the pit, intercepting the volatile organic load from the haul truck and shovel fleet, keeping the bedroom intake clean of methane drift from a coal mine boundary, and providing the clinical infrastructure to treat a worker injured at the face. The HVAC duct material specification across the village runs the full range from heavy galvanised G275 at 0.8 to 1.0 mm wall on a bedroom block supply duct, up to 316L stainless 1.5 mm welded continuous longitudinal seam on a kitchen exhaust riser at FSANZ-compliant continuous welded construction, with fire-rated 2-hour assemblies at the kitchen riser, the BESS room boundary, the diesel generator plant room boundary and the explosives magazine boundary at the mine interface. The SBKJ machine portfolio from the SBAL-V auto duct production line through to the SB-ZF1500 longitudinal stitchwelder, the SBSF-1525 super duct line for fire-rated assemblies, the SBFB-1500 spiral fitting machine, the SBPC1500 plasma cutter, the SBLR-600 inverter welder and the SBTF-1500/1602/2020 spiral tubeformer family covers the full range of fabrication required for a complete FIFO accommodation village ductwork package.

This guide walks an HVAC contractor, modular building manufacturer or duct fabricator from the NCC building classification and FSANZ catering scope through to the commissioning sign-off by the operating contractor, with reference to the Australian standards (AS 1668.2 mechanical ventilation, AS 4254 ductwork, AS 1530.4 fire-rated, AS 3957 dust hazardous area, AS 3666 cooling tower Legionella, AS/NZS 60079 hazardous areas, AS/NZS 5139 lithium battery installation, AS/NZS 1677 and AS/NZS 5149 refrigeration, AS 1940 flammable liquid, AS 1428.1 disability access, AS 2118 sprinkler), the NCC Volume 1 building classes (Class 1 detached, Class 3 hotel and barrack, Class 5 office, Class 7b storage, Class 8 industrial, Class 9b assembly), the FSANZ Food Safety Standards (4.2.1 general food premises, 4.2.2 food handling, 4.2.3 packaged food, 4.2.4 primary production), the international code references (NFPA 660 combustible dust consolidated 2025, NFPA 96 commercial kitchen, NFPA 855 stationary energy storage, NFPA 502 underground tunnel ventilation), and Safe Work Australia Workplace Exposure Standards across every relevant exposure. It covers project examples and operator names from the BHP Pilbara iron ore province through to the Bravus Adani Carmichael Galilee Basin coal mine, and it specifies the SBKJ machine portfolio that an Australian HVAC fabricator should be running to support a FIFO accommodation village ductwork scope.

The Australian mining operators and FIFO catering contractors driving demand

The first context point for any FIFO village HVAC scope is the operator pairing — the mining client funding the build, and the catering and accommodation services contractor running the day-to-day operation. The contract structure varies but the regulatory and operational standards are surprisingly consistent across the major operator pairs.

Pilbara iron ore province — BHP, Rio Tinto, Fortescue, Roy Hill, Atlas, Mineral Resources, Hancock

The Pilbara iron ore province is the largest single FIFO accommodation market in Australia by worker headcount and by total village floor area. BHP (ASX:BHP) operates the Mt Whaleback, Yandi, Newman, Jimblebar and Port Hedland operations through Western Australia Iron Ore (WAIO) with several thousand FIFO workers on rotation. Rio Tinto (ASX:RIO) operates Tom Price, Paraburdoo, Yandicoogina, Mesa A, Hope Downs and West Angelas at comparable scale. Fortescue (ASX:FMG) operates the Solomon Hub, Chichester (Cloudbreak and Christmas Creek) and Iron Bridge. Roy Hill is operated by Hancock Prospecting at significant scale. Atlas Iron and Mineral Resources operate smaller but still substantial operations.

The Pilbara HVAC environment is the toughest accommodation context in Australia for three combined reasons. Ambient summer dry bulb temperature regularly exceeds 45 degrees C and peaks above 50 degrees C, putting the cooling load above the supply temperature differential that residential ducted split systems are designed for. The haematite Fe2O3 and magnetite Fe3O4 red dust from iron ore production is everywhere in the air and clogs MERV 8 prefilters within 7 to 14 days requiring MERV 13 minimum on outdoor air intake. Respirable crystalline silica from the iron ore production sits at the Safe Work Australia 0.05 mg/m³ TWA exposure standard, halved from the previous 0.1 mg/m³ standard after the Australian silicosis epidemic and the 2024 Engineered Stone Ban. The HVAC duct material specification for Pilbara FIFO camps starts at heavy galvanised G275 1.0 to 1.2 mm and upgrades to 316L stainless across the kitchen exhaust, medical clinic and coastal-humid exposure zones at Port Hedland, Karratha and Dampier.

Bowen Basin metallurgical coal — BMA, Glencore, Anglo American, Stanmore, Yancoal

The Bowen Basin in central Queensland is the largest metallurgical coal export region in Australia. BHP Mitsubishi Alliance (BMA) operates Goonyella, Saraji, Peak Downs, Broadmeadow, Caval Ridge, Daunia and Blackwater. Glencore operates several Bowen Basin mines plus Mt Isa Mines in the Mt Isa region. Anglo American operates Capcoal, Dawson and Moranbah North. Stanmore Resources operates Curragh, Poitrel, Goonyella Riverside, Coppabella and Riverside following the Anglo American and BHP coal divestments. Yancoal (ASX:YAL) operates Mount Thorley, Hunter Valley operations and Moolarben including Bowen Basin assets through related entities. Whitehaven Coal (ASX:WHC) operates Maules Creek, Narrabri, Tarrawonga and Werris Creek in the NSW Gunnedah Basin which sits adjacent to the broader thermal and coking coal market. New Hope (ASX:NHC) operates New Acland and Bengalla.

The Bowen Basin FIFO accommodation regulatory context is dominated by the 2018 Queensland Black Lung Royal Commission, which followed the resurgence of Coal Workers Pneumoconiosis cases in Australian coal miners from 2015 onward after decades of believed-eradicated disease. The Royal Commission led to substantially tightened respirable coal dust exposure standards at 1.5 mg/m³ TWA respirable and 10 mg/m³ TWA inhalable, mandatory low-seam dust monitoring, and renewed regulatory and industry focus on the air quality at every working interface including the FIFO accommodation village which typically sits 5 to 15 kilometres from the active mine pit. The HVAC consequences in the camp itself are MERV 13 minimum prefiltration on outdoor air intake, HEPA H13 polish on any duct exposed to dust drift from the pit, outdoor air intake elevation at minimum 2.5 metres above grade and minimum 4 metres from any vehicle parking, and intake direction not facing the prevailing wind from the pit.

Surat Basin coal seam gas — Origin, Santos, QGC Shell, Glencore, Yancoal, Bridgeport

The Surat Basin in southern Queensland is the heart of the Australian coal seam gas (CSG) industry, supplying the Curtis LNG export hub at Gladstone. Origin Energy operates the Origin APLNG joint venture with ConocoPhillips and Sinopec, Santos operates the GLNG joint venture, and Shell QGC operates the QCLNG project. Glencore, Yancoal and Bridgeport operate thermal coal and CSG assets across the Basin. The FIFO accommodation footprint runs through villages at Roma, Wandoan, Miles, Chinchilla and Dalby plus dedicated CSG camp installations at well field clusters.

The CSG industry HVAC context adds methane drift and hydrogen sulphide (H2S) from sour gas zones at 15 ppm STEL exposure standard, AS/NZS 60079 Zone 1 classification at every wellhead, compressor station and pipeline interface, and the AS 1668.2 underground ventilation provisions that apply to any below-ground access at the CSG installations. The village HVAC scope itself is largely the same as the Bowen Basin camp scope but with added scrutiny on outdoor air intake quality and methane gas detection at any building footprint near the gas plant or pipeline route.

Galilee Basin — Adani Carmichael, Hancock GVK Alpha, Waratah Coal

The Galilee Basin in central-western Queensland is the newest major coal development region in Australia. Bravus (the operating entity of the Adani Group in Australia) operates the Carmichael coal mine, which commenced production in 2021 after a long approval and construction process. Hancock GVK operates the Alpha project. Waratah Coal operates the Galilee Coal Project. The FIFO accommodation footprint at Carmichael alone is several thousand workers across the operational and construction phases.

The Galilee Basin HVAC context combines the Bowen Basin coal dust and CWP regulatory environment with a more remote site location and a build that is essentially greenfield. The Carmichael village is one of the most recently constructed major FIFO accommodation installations in Australia and the HVAC scope across the bedroom, kitchen, laundry, medical, gym, BESS and workshop is at the modern standard for the industry.

WA Goldfields — Kalgoorlie Super Pit, Boddington, Tropicana, St Ives, Sunrise Dam

The WA Goldfields centred on Kalgoorlie-Boulder is the historical heart of Australian gold mining and remains the largest gold producing region in Australia. Northern Star Resources (ASX:NST) operates the Kalgoorlie Super Pit (KCGM) following the Saracen Mineral Holdings merger, Kanowna Belle and several other operations. Newmont (ASX:NEM) operates the Boddington gold-copper mine in the WA South West, the Tanami gold operation in the Northern Territory and the Cadia East operation in NSW. AngloGold Ashanti operates the Sunrise Dam and Tropicana operations in WA. IGO (ASX:IGO) operates the Tropicana joint venture and the Long nickel and Forrestania operations.

The WA Goldfields HVAC context adds the cyanide leach plant exposure at the gold processing operations — sodium cyanide solution in the CIL (carbon-in-leach) and CIP (carbon-in-pulp) processes at Boddington, Kalgoorlie, Tropicana and Sunrise Dam, with the Safe Work Australia STEL exposure standard for HCN at 5 ppm. The HVAC duct at the processing plant control room and the laboratory analysing the leach solution is 316L stainless throughout with continuous welded construction.

FIFO catering and accommodation services contractors — ESS, Sodexo, Compass, ISS, Civeo, Aramark, Spotless, KSI

The day-to-day operation of a FIFO accommodation village is contracted out by the mining operator to a specialist accommodation and catering services provider. ESS Support Services (the Compass-Sodexo joint venture brand for Australian remote site catering) is the largest single operator in Australian remote site catering at 30,000-plus FIFO workers across the contract portfolio. Sodexo Australia operates major contracts in the Pilbara and Bowen Basin. Compass Group Australia operates across the same regions. ISS Group Australia operates the cleaning, laundry and ancillary services contracts at several major villages. Civeo Australia (the Australian subsidiary of Civeo Corp) operates modular camp accommodation across a portfolio of 20,000-plus rooms in Australia. Aramark Australia operates catering at several major villages. Action Industrial Catering and KSI Camp Services operate smaller but specialist contracts. Spotless (now part of Downer EDI, ASX:DOW) operates the cleaning and laundry contracts at several major villages.

The HVAC duct specification implications of the operator pairing are subtle but important. ESS and Sodexo run kitchen exhaust cleaning programmes at higher frequency than the FSANZ minimum, which drives the access panel layout and the cleanout port positioning on the kitchen exhaust duct. Civeo runs modular camp accommodation built off-site in factory-assembled bedroom blocks of 6 to 12 rooms per module, which drives the duct sizing and connection design at the module interface. Spotless runs the laundry contract with high attention to lint extraction performance for fire risk management, which drives the lint duct routing and accumulation cleanout design. ISS runs the cleaning contract with high attention to outdoor air filtration performance and dust deposit on internal surfaces, which drives the MERV filter selection and the outdoor air intake location.

Camp construction contractors — Civeo, Outokumpu, NRW, Lendlease, Decmil, Monadelphous, John Holland CIMIC, Multiplex

The construction of a FIFO accommodation village is typically contracted to a specialist modular building manufacturer or to a head construction contractor with modular subcontractors. Civeo Australia manufactures and operates modular camps under a single integrated contract. Outokumpu and other modular building manufacturers supply the prefabricated bedroom blocks, mess hall, laundry and ancillary structures. NRW Holdings operates major civil and construction contracts at WA mining sites. Lendlease operates major construction projects including FIFO village build packages. Decmil operates modular camp construction. Monadelphous operates major mining infrastructure construction. John Holland (now part of CIMIC) operates major mining infrastructure including FIFO villages. Multiplex operates major construction projects. Acciona Mining, McConnell Dowell, BMD Construction, UGL (ASX:UGL) and Worley (ASX:WOR) operate across the broader mining construction market.

NCC building classification across the FIFO village footprint

The National Construction Code Volume 1 classifies every building in the FIFO village under a class number that drives the fire separation, the egress provisions, the ventilation requirements and the duct construction standard. The class matrix across a typical FIFO village is:

• Class 1a — detached single occupancy dwelling. Applies to the village manager's house if separate from the bedroom blocks. Rare on FIFO villages but present at long-term occupied operations.
• Class 3 — hotel or barrack-style accommodation. Applies to every bedroom block. The defining feature is multiple sole-occupancy units (SOUs) under a single building roof with shared egress paths. NCC fire compartmentation requirements at intertenancy walls drive fire-rated duct penetrations.
• Class 5 — office building. Applies to the admin, HR, payroll, IT and operations control office blocks. Ventilation per AS 1668.2 at 10 L/s per person plus acoustic separation per NC-35.
• Class 7b — storage building. Applies to the bulk store, dry goods store and uniform store. Lower ventilation requirements but specific fire load assessment depending on what is stored.
• Class 8 — industrial building. Applies to the workshop, maintenance bay and any production-side building. Higher ventilation requirements per AS 1668.2 and integration with AS/NZS 60079 hazardous area classification where applicable.
• Class 9b — assembly building. Applies to the mess hall, gym, recreation room, cinema, training room and chapel. Higher egress requirements and ventilation per AS 1668.2 at 8 to 12 L/s per person depending on occupancy density.
• Class 9c — residential aged care. Does not apply to FIFO villages but the same evacuation discipline carries across in the mining operator's emergency response plan.

Class 3 bedroom block ductwork — the bulk of the village scope

The bedroom blocks are the largest single ductwork scope in a FIFO village by linear metres and by floor area covered. A typical 1,000-room village runs 80 to 130 bedroom block modules of 8 to 12 rooms each, with each module a standalone NCC Class 3 fire compartment containing the room en-suite bathrooms, a central corridor, the supply and return ductwork, and an external roof or wall plant connection to the central HVAC system.

The room supply duct delivers 30 to 50 L/s of conditioned air per room at 22 to 26 degrees C and 40 to 60% RH under ASHRAE 62.1 Table 6-1 residential rates plus the bathroom exhaust at 25 L/s per fixture under AS 1668.2. The duct material is heavy galvanised G275 0.8 to 1.0 mm wall at the trunk and 0.6 to 0.8 mm at the room branch, fabricated on the SBAL-V auto duct production line at the standard galvanised configuration. The fire-rated penetration at the intertenancy wall between adjacent bedroom modules requires a fire damper per AS 1530.4 and AS 1851, with the damper sleeve fabricated to suit the Class 3 fire compartmentation. The duct insulation is typically rigid mineral wool board with foil facing or pre-insulated panel duct, depending on the climatic zone and the route exposure.

The bathroom exhaust duct from each room runs to a roof fan or to a riser feeding a central exhaust fan. The duct material is the same standard galvanised G275, with the exception that any exhaust riser passing through a fire-rated stair shaft must be fire-rated assembly per AS 1530.4. SBKJ fabricates the bathroom exhaust riser on the SBSF-1525 super duct line in fire-rated configuration where required.

Class 9b mess hall and assembly ductwork

The mess hall is the largest single space in the FIFO village and the assembly classification drives both higher egress provision and higher ventilation duty. A 1,000-person mess hall typically runs 800 to 1,200 square metres of floor space with 80 to 120 L/s per person of supply ventilation across the dining tables at peak meal sitting, drawing from a central air handling unit with run-around coil heat recovery from the return air and economy cycle outdoor air mode in shoulder seasons. The duct material is heavy galvanised G275 at 1.0 to 1.2 mm fabricated on the SBAL-V at the standard galvanised configuration, with acoustic NC-35 attenuator sections at the air handler discharge and at the room entry diffusers to control fan noise breakthrough.

The gym, recreation room, cinema and chapel are smaller assembly spaces with the same general ductwork specification at lower aggregate flow. The pool plant room (where the village includes a pool) adds the AS 3666 Legionella control on the warm water system and the dehumidification load to manage condensation on building surfaces. The duct material in the pool plant room and at the pool hall air handler is 316L stainless because chlorinated pool water releases hypochlorous acid and chloramine vapour that corrode galvanised steel.

The commercial kitchen and mess hall — FSANZ 4.2.1 and NFPA 96

The commercial kitchen feeding 1,000 to 3,000 FIFO workers across three meal sittings is one of the largest single commercial kitchen scopes in Australian food service. The catering contractor (ESS, Sodexo, Compass, Aramark, ISS, Action, KSI) operates the kitchen to FSANZ Food Safety Standards 4.2.1 to 4.2.4, AS 4326 and ISO 22000 HACCP food safety management system, AS/NZS 4674 food premises construction, AS 4696 meat handling, and the contract HSE management standard of the mining client.

Grease hood exhaust per NFPA 96

The cooking line grease hood is the most regulated single duct in the FIFO kitchen. The hood captures grease-laden vapour, smoke, steam and particulate from the cooking surface — wok burner, char grill, salamander, deep fryer, combination oven, range top — and exhausts via a stainless steel duct riser to a rooftop fan and discharge stack. The applicable standards are NFPA 96 Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations (adopted by reference under AS 1668.2 amendment for commercial kitchen exhaust and applied by Australian commercial kitchen designers as the international benchmark), AS 1668.2 mechanical ventilation, AS 4254 ductwork construction, AS 1530.4 fire-rated assemblies for the riser, and FSANZ 4.2.1 for the hygiene and access provisions.

The duct material specification is 316L stainless steel 1.5 mm wall minimum throughout the grease-bearing zone from the hood face through to the rooftop terminal. The longitudinal seams must be continuously welded — no rivets, no slip-and-drive, no S-and-drive joints — to prevent grease seepage from the duct and to allow surface cleaning to the FSANZ standard. The welded longitudinal seam is fabricated on the SB-ZF1500 longitudinal stitchwelder, with the weld quality verified by the inspector at every batch. The duct must be accessible for cleaning at intervals less than 3.6 metres with sealed cleanout access panels, and the rooftop discharge must terminate minimum 3 metres above the roof level and minimum 6 metres from any fresh air intake. The exhaust fan motor must be located outside the grease-bearing airstream, typically a roof-mounted upblast fan with the motor in the clean air side.

A typical FIFO mess hall runs 6 to 10 commercial cooking lines, each with its own grease hood at 8,000 to 18,000 L/s exhaust duty. The aggregate kitchen exhaust at a 1,000-person mess hall runs 60,000 to 120,000 L/s. The make-up air system runs at 80 to 90% of the exhaust duty on a balanced kitchen — typically 50,000 to 100,000 L/s of fresh air entering the kitchen via roof-mounted make-up air units with heat recovery from the exhaust where the climate justifies it, otherwise direct fresh air. The make-up air duct material is heavy galvanised G275 1.0 to 1.2 mm fabricated on the SBAL-V at the standard galvanised configuration.

Fire suppression and UL 300 hood integration

The kitchen hood is fitted with a wet chemical fire suppression system to UL 300 (or equivalent Australian certification) covering the cooking surface and the grease duct riser. The suppression system is activated automatically by a fusible link or detector in the hood, and the activation interlocks with the kitchen exhaust fan to shut down the fan, the gas supply to the cooking line, and the electrical supply to the kitchen plant. The fire damper at the kitchen exhaust riser penetration through fire-rated walls or floors must be sized and located to allow the suppression system to operate without venting prematurely.

Walk-in cold store, freezer and IQF -25C with ammonia R717

The FIFO kitchen back-of-house cold store complex typically runs a walk-in chiller at 2 to 4 degrees C, a walk-in freezer at minus 18 to minus 22 degrees C, and an IQF (individually quick frozen) blast freezer at minus 25 to minus 30 degrees C for the bulk meat, fish and vegetable input. Modern installations use ammonia R717 refrigerant at the IQF freezer and at the larger walk-in freezer for energy efficiency and zero ozone depletion. Smaller installations use R32, R410A or R454B HFC blends, and the trolley-mounted display refrigeration in the servery uses R744 CO2 or HFC.

The ammonia refrigeration plant room is classified Zone 2 for ammonia (with the 25 ppm STEL Safe Work Australia exposure standard) and the ventilation system runs at high air change rate — 30 to 60 ACH — with the duct material in 316L stainless throughout the plant room and at the IQF freezer interior. SBKJ fabricates the ammonia plant room duct on the SBAL-V in stainless configuration paired with the SB-ZF1500 stitchwelder for the welded sections, with AS/NZS 1677 (refrigeration safety) and AS/NZS 5149 (refrigeration installation) compliance throughout.

Separate halal, kosher, organic, vegetarian, allergen, raw and cooked separation

FIFO worker populations are typically diverse across cultural, religious and dietary requirements, and the modern FIFO kitchen operates separate preparation lines for halal, kosher, organic, vegetarian, gluten-free, allergen-controlled and standard menu items. The FSANZ food safety standard requires physical separation between raw and cooked food handling areas, between allergen-bearing and allergen-free preparation, and between halal and non-halal handling at the kitchen layout level. The HVAC duct consequence is multiple smaller exhaust hoods over each separated line rather than a single large hood, with each line's exhaust running to the rooftop independently to prevent cross-contamination via the duct system during reverse flow or fan trip events. The aggregate duct linear metres at a multi-line FIFO kitchen is substantially higher than at a single-line restaurant kitchen of equivalent total cooking capacity.

The central laundry — AS 1668.2 and NFPA 660 lint

The FIFO village central laundry processes 3,000 to 5,000 kilograms of laundry per day at a 1,000-person village, scaling proportionally to larger and smaller installations. The laundry is typically operated by ESS, Sodexo, Compass, ISS, Spotless, Alsco or KSI under contract to the mining operator. The wet wash floor runs continuous batch washer-extractor trains processing the bedding, towels, work shirts, hi-vis trousers and dust coats in dedicated load sequences to prevent cross-contamination between coal dust, iron ore dust, hydrocarbon contamination and standard linen. The dry side runs tunnel finishers and calandra flatwork ironers at 180 to 220 degrees C surface temperature for the bedding and towel finishing. The folding side runs automated and manual stations.

Wet wash floor ventilation

The wet wash floor generates substantial humid heat, steam and aerosol from the washer-extractor operations. AS 1668.2 mechanical ventilation requires 10 to 15 ACH across the wet wash floor at standard occupancy load, with the supply duct delivering tempered fresh air at the ceiling and the exhaust drawing from low and high level to capture both the cool dense floor-level air and the warm steam at high level. The duct material is standard heavy galvanised G275 1.0 mm fabricated on the SBAL-V, with the exception that any duct exposed to chemical mist from the wash detergent and bleach mix is 316L stainless. The exhaust fan motor must handle high humidity service without bearing or winding damage, and any in-line plant must be IP55 rated minimum for the wet environment.

Dryer and tunnel finisher lint extraction

The lint produced by the dryer and tunnel finisher operation is the dominant fire risk in any large laundry. Lint at the size produced by cotton, polyester and polyester-cotton blend fabric processing is combustible at LEL approximately 30 to 50 g/m³ depending on the fibre and the moisture content, with minimum ignition energy of 5 to 15 mJ. The NFPA 660 (2025 consolidated edition) combustible dust assessment applies to the lint accumulation in the duct system, and the AS 1668.2 ventilation provisions integrate with the NFPA 660 requirements at any combustible dust zone. The duct routing must run downward-sloping main duct sections with dust accumulation drain points at the low points, no internal pockets or dead-end fittings where dust can accumulate undisturbed, explosion venting per NFPA 68 sized to relieve the deflagration pressure where the dust load exceeds the threshold, and isolation valves per NFPA 69 to contain the explosion propagation within a single segment of duct.

The lint duct runs from each dryer and from the tunnel finisher discharge to a dedicated lint hopper, which is typically a cyclone-bag filter combination capturing the lint for periodic emptying. The hopper is sited in a dedicated lint room or external enclosure with fire separation from the laundry building proper. The duct material from the dryer through to the hopper is heavy galvanised G275 1.0 to 1.2 mm with bonded electrical continuity throughout to dissipate static charge from the dust flow, fabricated on the SBAL-V with the SBFB-1500 producing the cyclone inlet transitions.

Calandra flatwork ironer steam plume

The calandra flatwork ironer operates at 180 to 220 degrees C surface temperature and releases a substantial steam plume from the feed and discharge ends as the wet bedding and tablecloth feed contacts the heated roll. The steam plume management requires a dedicated extraction hood directly above the ironer at the feed and discharge ends, capturing the steam at point of release and discharging via insulated duct to roof. The duct material is heavy galvanised G275 1.0 mm with thermal insulation, fabricated on the SBAL-V, with the duct sized for the actual steam release rate at the ironer operating duty.

Dry cleaning solvent extraction

Where the laundry offers dry cleaning for the FIFO worker's work uniform service, the dry cleaning machine uses perchloroethylene (PERC) or a hydrocarbon solvent in a closed-loop machine. The dry cleaning zone is classified AS/NZS 60079 Zone 1 for the solvent vapour, with Ex-d certified in-line plant and the duct material in 316L stainless throughout the solvent-bearing zone, fabricated on the SB-ZF1500 stitchwelder for the welded sections. The dry cleaning machine itself sits in a dedicated room with separate ventilation from the wet wash floor.

The medical clinic — AS/NZS 4187 and ASHRAE 170

The FIFO medical clinic on a mining accommodation village is typically operated by Aspen Medical or International SOS under contract to the mining operator. The clinical capability ranges from a single registered nurse and first aid for a 100-person village up to a multi-doctor clinic with imaging, pathology, dental and MEDEVAC helicopter pad coordination for 3,000-person installations at major Pilbara and Bowen Basin operations. The HVAC duct specification follows AS/NZS 4187 for sterile services, ASHRAE Standard 170 for ventilation of healthcare facilities (adopted as the Australian reference in the absence of an equivalent AS standard), AS 1668.2 for general mechanical ventilation, and the AHPRA practitioner registration scope which drives the required clinical capability.

Consultation rooms and treatment bays

Consultation rooms and general treatment bays operate at 6 ACH minimum with HEPA H13 polish on the supply duct, balanced supply and exhaust at the room level, and acoustic NC-35 separation from the corridor. The duct material is 316L stainless 1.5 mm wall throughout the clinical zone, fabricated on the SBAL-V in stainless configuration paired with the SB-ZF1500 for the welded plenum sections at the air handler discharge and at the HEPA filter housing.

Isolation room with negative pressure

The isolation room is designed to contain airborne pathogens released by an infectious patient and prevent dispersion to the broader village population. The room operates at 12 ACH minimum with negative pressure differential of minimum 2.5 Pa (and typically 7.5 to 12 Pa) against the corridor, anteroom buffer with separate pressure stage, HEPA H13 minimum on the exhaust discharge before atmospheric release, and dedicated exhaust riser to roof not shared with any other building exhaust. The duct material is 316L stainless throughout with continuous welded longitudinal seams on the SB-ZF1500. The fire damper at the isolation room boundary must integrate with the pressure cascade and not compromise the negative pressure differential during normal operation.

Sterile services and central sterile supply

The sterile services room (where the clinic performs sterilisation of reusable instruments or stores sterile supplies) operates at 20 ACH minimum with HEPA H14 supply, positive pressure differential against the corridor, and full AS/NZS 4187 compliance for the sterile services workflow. The duct material is 316L stainless welded continuous longitudinal seam throughout, fabricated on the SBAL-V and SB-ZF1500 pair.

Vaccine fridge and blood bank

The vaccine fridge operates at 2 to 8 degrees C under the cold chain integrity requirement of the National Vaccine Storage Guidelines, with separate temperature monitoring and alarm. The blood bank (where the clinic stocks emergency blood products for MEDEVAC delay scenarios) operates at 4 degrees C with redundant cooling and the same monitoring discipline. The mechanical refrigeration duty is on a dedicated chiller with separate ventilation, and the duct around the chiller is 316L stainless for corrosion resistance against any refrigerant leak.

The BESS Li-ion plant and diesel generator — AS/NZS 5139, NFPA 855, AS/NZS 60079

BESS (battery energy storage system) Li-ion battery plant has become standard on remote mining accommodation villages over the last 5 years. ATCO, Eaton, Vertiv, Schneider Electric and the Cummins and Caterpillar microgrid offerings all package BESS with the diesel generator and the solar PV array at remote sites. The BESS provides grid firming against solar PV intermittency, peak shaving against the diesel generator duty cycle, and a substantial diesel offset on the village load profile.

Three failure mode duct specification

The HVAC ductwork specification for the BESS room follows AS/NZS 5139 (Australian lithium battery installation standard) and NFPA 855 (the US Stationary Energy Storage Systems standard adopted by Australian operators as the international benchmark) and considers three failure modes simultaneously.

First, normal operation generates moderate heat at 0.5 to 1.5% of stored capacity as conversion loss across the inverter and cell efficiency. A typical 1 MWh BESS plant generates 5 to 15 kW of heat that must be removed by the BESS room ventilation at typical air change rate of 6 to 12 ACH plus mechanical cooling where the ambient summer dry bulb temperature exceeds the cell operating temperature limit (which it does throughout the Pilbara, Bowen, Surat, Galilee and Goldfields summer).

Second, off-gas event ahead of full thermal runaway generates hydrogen and carbon monoxide from cell venting at substantial flow rate. The ventilation must purge those gases below the lower explosive limit with continuous gas detection at H2 1% (25% LEL methane equivalent assumed for sensor selection) and CO at 30 ppm. The ventilation system must transition from normal mode to emergency purge mode automatically on gas detection, with the purge duty at 10 to 20 ACH plus interlock to isolate the BESS at the room electrical disconnect.

Third, full thermal runaway generates HF at 1.8 ppm STEL exposure limit (a CRITICAL acute toxicity hazard), CO at 30 ppm TWA, and combustible off-gas at potential explosive concentration. The room is then evacuated, isolated, and the duct must hold fire integrity for 2 hours per AS 1530.4 and AS 1668.2 evacuation requirements while the suppression system operates. The suppression is typically a clean agent (Novec 1230, FM-200) or gaseous CO2, with water sprinkler as backup.

BESS duct material and fabrication

SBKJ specifies 316L stainless 1.5 mm wall for the BESS room exhaust duct (resistance against HF acid attack), fire-rated 2-hour assembly per AS 1530.4 for the duct penetrating the BESS room fire separation, and continuous welded longitudinal seam construction on the SBAL-V plus SB-ZF1500 pair. The fire-rated assembly is fabricated on the SBSF-1525 super duct line in fire-rated configuration. The duct fittings (transitions, take-offs, bell-mouth) are fabricated on the SBFB-1500 in stainless configuration.

Diesel generator plant room — AS/NZS 60079 Zone 1

The diesel generator plant room provides primary power on a remote off-grid camp and backup power on a grid-connected camp during outages. The generator is typically a 500 kW to 2,500 kW unit running on diesel from a bunded above-ground tank or an underground tank, with the fuelling station classified AS/NZS 60079 Zone 1 for diesel vapour and the tank breather classified Zone 1. The generator room itself is not normally classified hazardous (diesel vapour from a closed engine is contained inside the engine itself) but the ventilation duty is dominated by the combustion air supply at 5 to 10 cubic metres per minute per kilowatt of generator capacity, plus the radiator cooling discharge.

The combustion air intake duct material is heavy galvanised G275 1.0 to 1.2 mm, fabricated on the SBAL-V, with bonded electrical continuity throughout. The radiator discharge duct material is heavy galvanised G275 1.2 mm with thermal insulation, fabricated on the SBAL-V. The fuel tank breather vent duct material is 316L stainless welded continuous longitudinal seam on the SB-ZF1500. The fuel tank vent and fuelling station hazardous area classification follows AS 1940 flammable liquid storage and AS/NZS 60079.10.1.

The mine workshop, welding bay and tyre regrind extraction

The mine workshop on the FIFO camp service yard handles the haul truck, shovel, loader, dragline and ancillary equipment fleet from Cat, Komatsu, Hitachi, Liebherr and Volvo. Haul trucks at the 100 to 400 tonne range carry tyres of 3 to 4 metres diameter, and tyre regrind, tyre repair and tyre disposal operations generate respirable rubber dust at significant emission rate. Welding and cutting on the truck bed, frame, suspension and dump body generates fume of mixed composition — manganese at 0.2 mg/m³ Safe Work Australia exposure standard, iron oxide Fe2O3 at 5 mg/m³, hexavalent chromium at 0.05 mg/m³ on stainless welds, nickel at 0.05 mg/m³ on Inconel and high-temperature alloys, plus the diesel exhaust contribution from the engine block during welding repairs.

Welding fume extraction

The welding bay scope covers MIG, TIG and stick welding on mild steel, stainless and chromium-bearing alloys plus oxyacetylene cutting on the mild steel and the occasional aluminium repair. The fume extraction system uses flexible articulated arms at each welding station drawing 1,000 to 2,000 L/s per arm to a central filtration unit, plus downdraft tables for the bench welding operations. The duct material is heavy galvanised G275 1.0 mm fabricated on the SBAL-V with the SBFB-1500 producing the articulated arm connection transitions. The filtration unit is typically a multi-stage bag filter or cartridge filter at HEPA H13 polish for the chromium-bearing fume, with the filtered air discharged to atmosphere through a roof terminal.

Acetylene cylinder storage — AS/NZS 60079 Zone 1

The acetylene cylinder storage area is classified AS/NZS 60079 Zone 1 for acetylene gas leakage, with the storage area ventilated at high air change rate (12 to 20 ACH) and the ventilation discharge to atmosphere via a duct routed away from any ignition source. The duct material is heavy galvanised G275 1.0 mm with bonded electrical continuity throughout, fabricated on the SBAL-V. The acetylene cylinders themselves are stored upright in dedicated cylinder racks with chain restraint, and the welding bay manifold connection follows AS 4839 acetylene cylinder distribution.

Tyre regrind and rubber dust extraction

Tyre regrind is a substantial operation at any major mining site running 100 to 400 tonne haul truck fleet. The worn-out tyres are removed at the workshop, the tread is reground for retreading or for disposal, and the carcass is disposed of via dedicated tyre disposal contractor. The regrind operation generates respirable rubber dust at significant emission rate, with combustible dust assessment per NFPA 660. The duct material at the regrind extraction is heavy galvanised G275 1.0 to 1.2 mm with bonded electrical continuity throughout, downward-sloping with accumulation drain points, fabricated on the SBAL-V. The filtration is typically a cyclone-bag filter combination with the collected dust disposed of as combustible waste.

Heavy vehicle wash bay

The heavy vehicle wash bay handles the daily and weekly washing of the haul truck, shovel and loader fleet. The wash bay floor is typically a concrete pad with a recovery sump feeding a wash water treatment plant for the recovery and recycle of the wash water. The HVAC scope at the wash bay covers the general ventilation against the humid mist generated by the wash operation, with the duct material in heavy galvanised G275 1.0 mm fabricated on the SBAL-V. Any duct directly exposed to the wash mist plume is 316L stainless.

The pit-top, dry change room and lunchroom interface to the active mine

The FIFO accommodation village sits typically 5 to 15 kilometres from the active mine pit at an iron ore, coal or gold operation. The transition between the village and the pit happens at the dry change room (where the worker swaps from street clothes to mine PPE), the lunchroom or crib room (where the worker has lunch during the shift), and the pit-top control room or shovel cab where applicable. These buildings sit on the mine lease side and carry the mining safety regulatory framework rather than the residential framework.

Dry change room ductwork

The dry change room is the boundary between the clean (village) side and the dirty (pit) side. The worker arrives in clean clothes, removes them in the clean side change locker, walks through to the shower, then puts on PPE in the dirty side change locker for the shift. At the end of the shift the worker reverses the sequence — removes PPE in the dirty side, showers, dresses in clean clothes in the clean side, and returns to the village. The HVAC duct specification has to maintain positive pressure on the clean side relative to the dirty side, prevent dust drift from the dirty side back into the clean side, and provide adequate fresh air across the shower and dressing zones.

The duct material on the clean side is heavy galvanised G275 1.0 mm fabricated on the SBAL-V. The duct material on the dirty side and at the shower zone is 316L stainless because the humid environment combined with the dust load corrodes galvanised steel rapidly. The supply duct delivers tempered fresh air at the ceiling on both sides, with the exhaust drawing from low level on the dirty side to capture the dust drift and from the shower zone at low and high level.

Lunchroom and crib room ductwork

The lunchroom and crib room provide the eating area for workers on shift. The HVAC duct specification is similar to the mess hall but at smaller scale, with FSANZ Food Safety Standard 4.2.1 application to any food handling (typically limited to reheating prepared meals from the mess hall) and the standard NCC Class 9b assembly classification. The duct material is heavy galvanised G275 1.0 mm fabricated on the SBAL-V.

Coal mine boundary — methane drift mitigation

At a Bowen Basin, Galilee Basin or NSW Gunnedah Basin coal mine, the FIFO village sits typically 5 to 15 kilometres from the active mine but the methane drift from any longwall vent shaft, surface gas drainage discharge or open cut pit can reach the village under specific wind conditions. The HVAC duct outdoor air intake at the village must include methane gas detection at the intake plenum with interlock to dampers or to alarm at 1% LEL (which is 0.5% methane by volume, well below the 1.25% TWA exposure standard but above the natural background). The intake direction should not face the prevailing wind from the coal mine, and the intake elevation should sit at minimum 2.5 metres above grade to avoid the heavier-than-air components of coal mine off-gas.

Iron ore mine boundary — silica and red dust mitigation

At a Pilbara iron ore operation, the village sits typically 5 to 15 kilometres from the active mine pit but the haematite and magnetite red dust from production reaches the village under any wind condition. The HVAC duct outdoor air intake must include MERV 13 minimum prefiltration with HEPA H13 polish on any duct exposed to dust drift, the intake direction should not face the prevailing wind from the pit, and the intake should be located on the side of the building furthest from the pit. The dust drift mitigation is one of the dominant air quality issues in Pilbara accommodation HVAC design.

Goldfields cyanide leach plant boundary

At a Kalgoorlie, Boddington, Tropicana or Sunrise Dam gold mine, the cyanide leach plant operates at HCN concentration approaching the 5 ppm STEL exposure standard within the plant boundary, with controlled emission to atmosphere via the leach plant vent stack. The FIFO village is typically located upwind of the prevailing wind direction from the leach plant to minimise any exposure, but the HVAC duct outdoor air intake at the village should still include continuous HCN gas detection at the intake plenum with interlock to dampers or to alarm. The intake direction should not face the prevailing wind from the leach plant.

The potable water, sewerage and solar PV plant rooms

The FIFO village requires self-contained potable water treatment, sewerage treatment, solar PV with BESS and diesel generator backup, and telecommunications infrastructure at a scale that is small in absolute terms but substantial in regulatory and operational complexity for a remote site.

Potable water treatment

The potable water treatment plant typically draws from a bore, a surface dam or a remote pipeline and treats to AS/NZS 4020 potable water quality through reverse osmosis (RO), filtration, chlorine dosing per AS/NZS 3500, and UV polish where required. The plant room is a small mechanical and chemical handling space with the HVAC duct material in heavy galvanised G275 1.0 mm fabricated on the SBAL-V. Any duct exposed to chlorine vapour at the chlorine dosing zone is 316L stainless.

Sewerage treatment

The sewerage treatment plant operates an activated sludge or MBR (membrane bioreactor) process treating the village wastewater to a discharge standard suitable for the local EPA approval. The plant room HVAC duct material is heavy galvanised G275 with stainless on the headworks (where the screened wastewater enters) and at the chemical dosing. The FOG (fats, oils and grease) trap on the kitchen wastewater stream sits at the headworks and the duct in the FOG trap room is 316L stainless.

Solar PV inverter room and BESS

The solar PV inverter room houses the inverters converting the DC output from the array to AC for distribution. The room operates at AS 1668.2 mechanical ventilation duty with the duct material in heavy galvanised G275 1.0 mm fabricated on the SBAL-V. The BESS plant room as discussed above is on dedicated 316L stainless duct with fire-rated 2-hour assembly for the fire separation.

Telecommunications and IT — Telstra, Optus, NBN Sky Muster, Starlink, Inmarsat

The telecommunications scope at a FIFO village combines terrestrial Telstra and Optus mobile coverage where available, NBN Sky Muster satellite backhaul for fixed broadband, Inmarsat satellite for the operational mining communications, and Starlink satellite for the high-bandwidth modern remote site. The IT room and the telecommunications hub require the standard data centre HVAC duct specification at moderate scale, with N+1 redundancy on the cooling, MERV 13 minimum filtration, and the duct material in heavy galvanised G275 1.0 mm fabricated on the SBAL-V.

The fire station, emergency response and AS 2118 sprinkler

The FIFO village requires a fire station and emergency response capability proportional to the village population and the response time from the nearest off-site fire brigade. A village of 1,000 to 3,000 workers typically operates an on-site fire and emergency response team with a fire truck, ambulance and dedicated trained staff. The fire station building HVAC duct specification follows the NCC Class 8 industrial classification, with the duct material in heavy galvanised G275 1.0 mm fabricated on the SBAL-V.

AS 2118 sprinkler integration

The village fire protection follows AS 2118 sprinkler design with full coverage across the bedroom blocks, mess hall, laundry, medical clinic, gym, BESS, generator and workshop. The fire fighting duty cycle integrates with the HVAC system at the smoke control, stairwell pressurisation and fire damper coordination. AS 1668.1 governs the smoke control system design, with the duct material at the smoke control supply and exhaust risers in fire-rated assembly per AS 1530.4 at the 2-hour integrity standard. SBKJ fabricates the smoke control duct on the SBSF-1525 super duct line in fire-rated configuration.

The bushfire smoke event and remote weather impact

Australian remote mining sites sit in bushfire-prone landscapes with significant smoke event risk across the summer months. The 2019-2020 Black Summer and the 2023-2024 fire season exposed the inadequacy of standard outdoor air filtration against bushfire smoke at any major Australian commercial or residential building. FIFO villages in the Pilbara, Bowen, Surat, Galilee and Goldfields are not exempt from the bushfire smoke risk and the modern HVAC duct specification includes provision for bushfire smoke event filtration.

The bushfire smoke filtration spec typically combines MERV 13 prefilter, HEPA H13 polish on any duct serving occupied space during a smoke event, and activated carbon at the recirculation air handler to capture the VOC fraction of smoke including aromatic hydrocarbons, formaldehyde and acrolein. The duct material remains heavy galvanised G275 fabricated on the SBAL-V at the standard configuration, but the air handler and the filter housings are sized for the bushfire smoke event duty rather than the steady-state operating duty.

NORM (naturally occurring radioactive material) and the WA Pilbara legacy

The WA Pilbara iron ore province sits over geology that includes naturally occurring radioactive material at low but measurable concentrations, with NORM exposure standards under ARPANSA RPS 9, RPS 11, RPS 15 and RPS 19. The exposure pathway is typically through dust inhalation rather than direct gamma radiation, and the HVAC outdoor air filtration that captures the haematite and magnetite red dust also captures the NORM fraction at the same MERV 13 plus HEPA H13 specification.

The same NORM considerations apply at the bauxite refineries at Worsley, Yarwun, Pinjarra and Wagerup where bauxite respirable dust at 5 mg/m³ and inhalable at 10 mg/m³ exposure standards combine with low NORM activity in the bauxite ore. The HVAC duct specification at the FIFO village serving the bauxite refinery follows the same MERV 13 plus HEPA H13 spec.

The Wittenoom legacy and asbestos awareness

The WA Pilbara has the historic Wittenoom crocidolite asbestos mine, closed in 1966 but with ongoing strict asbestos abatement and exclusion at the site. Any FIFO village in the Pilbara must include asbestos awareness in the construction and operational HVAC scope at the 0.1 fibres per millilitre Safe Work Australia exposure standard. Modern modular village construction is asbestos-free by design but legacy installations from before 1990 may include asbestos-bearing materials that need abatement during refurbishment.

The Engineered Stone Ban and the Australian silicosis epidemic context

The Australian silicosis epidemic that drove the Engineered Stone Ban in 2024 is the regulatory backdrop for the halved respirable crystalline silica exposure standard at 0.05 mg/m³ TWA. The epidemic was concentrated in engineered stone benchtop fabricators but the same disease has been documented in tunnel construction workers, Pilbara iron ore workers, gold mine workers and quarry workers across Australia. The FIFO accommodation village HVAC specification interfaces with the silicosis context through the outdoor air filtration at MERV 13 minimum, the dry change room ventilation to prevent dust transfer from the dirty side to the clean side, and the medical clinic respiratory assessment capability.

SBKJ machine portfolio for the FIFO accommodation HVAC fabricator

SBKJ supplies the machine portfolio that an Australian HVAC fabricator running a FIFO accommodation village ductwork package needs across the full scope.

SBAL-V auto duct production line — the workhorse

The SBAL-V auto duct production line is the workhorse for the bedroom and bathroom block supply and return duct in galvanised G275, the kitchen make-up air, the laundry general ventilation, the admin and HR office, the gym and recreation, and converts to 316L stainless configuration for the kitchen exhaust per FSANZ 4.2.1 and NFPA 96 and the medical clinic per ASHRAE 170. The machine handles 0.6 to 1.5 mm wall thickness across galvanised, aluminium and stainless construction with full TDC, TDF, slip-and-drive and flange jointing options. A FIFO village ductwork package of 1,000 rooms scale typically runs the SBAL-V at full single-shift capacity for 6 to 9 months of village build.

SBAL-III pony machine

The SBAL-III is the entry-level pony duct line for smaller fabrication contracts where the volume does not justify the SBAL-V investment, or as a secondary machine running stainless while the SBAL-V runs galvanised on the main scope. A 200 to 500 room FIFO village often suits the SBAL-III as the primary machine, with the SBAL-V as the upgrade path when the contract volume grows.

SBSF-1525 super duct line and fire-rated configuration

The SBSF-1525 super duct line and the SBSF fire-rated configuration handles the 2-hour fire-rated AS 1530.4 sections at the kitchen exhaust riser, the BESS room boundary, the diesel generator plant room boundary, the fuel storage and the explosives magazine boundary at the mine interface. The fire-rated configuration delivers tested assemblies with the test certificate dossier required by the building approval and the contract HSE management standard.

SB-ZF1500 longitudinal stitchwelder

The SB-ZF1500 longitudinal stitchwelder produces the welded stainless plenum sections inside the kitchen exhaust hood, the medical clinic sterile zone, the BESS room and the ammonia chiller plant room at the IQF freezer. The continuous welded longitudinal seam is the FSANZ 4.2.1 requirement at the kitchen exhaust and the AS/NZS 4187 requirement at the sterile services, and the SB-ZF1500 delivers that weld quality at production rate.

SBFB-1500 spiral fitting machine

The SBFB-1500 spiral fitting machine produces the transitions, take-offs, bell-mouth entries, Y-pieces and fittings across the whole village in standard galvanised, with a stainless configuration for the kitchen and clinical zones. The SBFB-1500 is the partner machine to the SBAL-V and the SBTF spiral tubeformer family for the complete fittings scope.

SBPC1500 plasma cutter

The SBPC1500 plasma cutter handles the heavy-gauge plate cutting for fire-rated assemblies, fan house plenums and large transition pieces. The plasma cutter is the partner machine to the SBSF-1525 fire-rated duct line for the high-precision plate work.

SBLR-600 inverter welder

The SBLR-600 inverter welder is the field repair welder for installed duct, with the bench welding stations for shop fabrication. The SBLR-600 is the partner machine to the SBAL-V and the SB-ZF1500 for the welding scope.

SBTF-1500, SBTF-1602 and SBTF-2020 spiral tubeformer family

The SBTF spiral tubeformer family produces the round duct for the gym, recreation, kitchen exhaust riser, mine workshop dust extraction main duct and any large-diameter ventilation duct across the village. The SBTF-1500 handles round duct up to 1,500 mm, the SBTF-1602 up to 1,600 mm, and the SBTF-2020 up to 2,000 mm — covering the full size range typically needed on a FIFO accommodation village.

SB-ZF1500 with SBAL-V for the stainless plenum pair

The standard FIFO kitchen exhaust and medical clinic clinical zone fabrication pair is the SBAL-V auto duct line for the stainless rectangular duct paired with the SB-ZF1500 stitchwelder for the welded plenum sections. This pair is the production combination that delivers FSANZ 4.2.1 and AS/NZS 4187 compliance at production rate.

Industry bodies, statutory bodies and the FIFO accommodation regulatory ecosystem

The Australian mining FIFO accommodation industry sits within a dense regulatory ecosystem spanning federal, state and industry body frameworks. The principal industry bodies include the Minerals Council of Australia (MCA) as the peak body for the broader mining industry, the Australian Mines and Metals Association (AMMA) for the industrial relations and HR side, the Australian Coal Association (ACA), the Australian Gold Industry Group, the Iron Ore Industry council, the Pilbara Industry's Community Council (PICC) for the Pilbara specifically, and the Bowen Basin Industry Forum (BBIF) for the Bowen Basin.

The statutory bodies include the NSW Resources Regulator under the NSW Department of Regional NSW, the VIC Earth Resources Regulation under the Department of Energy Environment and Climate Action, the QLD Department of Resources and the Mines Inspectorate under Queensland Mines and Energy Resources (QMEMR), the WA Department of Mines, Industry Regulation and Safety (DMP), the SA Department for Energy and Mining, the NT Department of Industry Tourism and Trade Mining division, and the TAS Mineral Resources Tasmania. Federal regulators include the Australian Radiation Protection and Nuclear Safety Agency (ARPANSA) for NORM, the Australian Health Practitioner Regulation Agency (AHPRA) for the medical clinic registration, the Food Standards Australia New Zealand (FSANZ) for the catering, and the Department of Agriculture Fisheries and Forestry under the Biosecurity Act 2015 for the village biosecurity at the FIFO transit hub airports.

The contracted clinical services include Aspen Medical and International SOS for the resident clinical and MEDEVAC capability at the major FIFO accommodation installations.

The remote construction village — the FIFO accommodation cousin

The remote construction village is the closely related cousin to the operational FIFO accommodation village. Where the operational village houses the workforce during the steady-state production phase of a mine, the construction village houses the workforce during the construction phase of a new mine, pipeline, processing plant or major infrastructure asset. Construction villages run typically 2 to 5 years of full occupancy then either convert to the operational village (if the layout suits) or get demobilised and the modules redeployed elsewhere.

The HVAC duct specification at a construction village is similar to the operational village but with attention to the temporary nature of the installation and the higher worker turnover during construction. The modular construction is often more standardised and less customised than at the operational village, with the bedroom blocks, mess hall, laundry and medical clinic supplied as off-the-shelf modular packages from Civeo, Decmil, NRW or specialist modular building manufacturers. The SBKJ machine portfolio is the same — SBAL-V for the bulk of the rectangular duct, SBTF for the round, SBFB-1500 for fittings, SBSF-1525 for the fire-rated, SB-ZF1500 for the stainless welded plenum sections.

Audit, commissioning and handover to the operating contractor

The final stage of the FIFO accommodation HVAC scope is the audit, commissioning and handover to the operating contractor (Civeo, Sodexo, ESS, Compass, ISS, Spotless, Aramark or KSI) and the mining client (BHP, Rio Tinto, Fortescue, Newmont, AngloGold Ashanti, Northern Star, IGO, Whitehaven, New Hope, Stanmore, Yancoal, BMA or Bravus).

Commissioning and balancing

The commissioning scope covers the verification of the design fresh air, recirculation and exhaust duties across every building, the verification of the negative pressure at the medical clinic isolation room and the positive pressure at the sterile services, the verification of the kitchen hood capture velocity at the hood face under operating conditions, the verification of the laundry lint extraction performance and the dust accumulation at the duct cleanout points, the verification of the BESS room ventilation duty in normal and emergency modes, the verification of the diesel generator combustion air supply at full load, and the verification of the smoke control system performance under fire simulation.

AS-built documentation

The AS-built documentation package handed over to the operating contractor and the mining client includes the AS-built ductwork drawings, the fire damper schedule and inspection records per AS 1851, the HEPA filter change records and baseline performance, the FSANZ kitchen exhaust cleaning baseline records, the AS/NZS 60079 hazardous area dossier with the verification records for bonding continuity, the AS/NZS 5139 BESS commissioning records, the AS 2118 sprinkler integration records, and the maintenance schedule for the operating contractor to take forward.

Operator training and handover

The handover includes operator training on the HVAC system operation, the gas detection alarms, the BESS room emergency response, the kitchen hood fire suppression activation, the medical clinic pressure cascade monitoring, the dry change room positive-to-negative pressure direction verification, and the smoke control system operation in fire mode. The operating contractor takes ongoing responsibility for the system under the contract HSE management standard, and the AS-built documentation is the maintenance baseline against which the operating contractor manages the system over the contract life.

The ARBS 2026 and SBKJ Group at Sydney

SBKJ Group will exhibit at ARBS 2026 in May at the Sydney International Convention Centre, with the SBAL-V auto duct production line, the SB-ZF1500 longitudinal stitchwelder, the SBSF-1525 super duct line in fire-rated configuration, and the SBFB-1500 spiral fitting machine on the stand. The FIFO accommodation village ductwork scope is one of the largest single Australian HVAC fabrication markets and SBKJ engineering supports HVAC contractors and modular building manufacturers bidding into Civeo, Sodexo, ESS, Compass, ISS, Aramark, Spotless and KSI accommodation contracts with the Pilbara, Bowen, Surat, Galilee and Goldfields mining operators.

Conclusion — the FIFO village HVAC scope as the modern Australian engineering standard

The FIFO accommodation village HVAC scope sits at the intersection of residential, commercial, industrial, food service, healthcare and mining-site engineering standards, with a regulatory framework that draws across the National Construction Code, the FSANZ Food Safety Standards, AS 1668.2 mechanical ventilation, AS 4254 ductwork, AS 1530.4 fire-rated, AS 3957 dust hazardous area, AS 3666 Legionella, AS/NZS 60079 hazardous areas, AS/NZS 5139 lithium battery, AS/NZS 1677 and AS/NZS 5149 refrigeration, AS 1940 flammable liquid, AS 2118 sprinkler, AS 1668.1 smoke control, AS/NZS 4187 sterile services, ASHRAE 170 healthcare ventilation, the international NFPA codes (660 combustible dust, 96 commercial kitchen, 855 BESS, 502 underground tunnel), the Safe Work Australia Workplace Exposure Standards, and the state mining regulations across NSW, QLD, WA, SA, NT, VIC and TAS.

The HVAC contractor delivering a complete FIFO accommodation village ductwork package needs the machine portfolio to fabricate heavy galvanised G275 at 0.6 to 1.5 mm wall for the bulk of the bedroom, admin, gym and general ventilation scope; 316L stainless 1.5 mm welded continuous longitudinal seam for the FSANZ-regulated kitchen exhaust, the AS/NZS 4187 sterile services, the BESS room exhaust, the ammonia chiller plant room and the dry cleaning solvent extraction; fire-rated 2-hour assemblies per AS 1530.4 for the kitchen exhaust riser, the BESS room boundary, the diesel generator plant room boundary, the smoke control supply and exhaust risers; and the round duct from the gym to the workshop dust extraction in galvanised or stainless as the application demands. The SBKJ portfolio — SBAL-V auto duct production line, SBAL-III pony machine, SBSF-1525 super duct line, SB-ZF1500 longitudinal stitchwelder, SBFB-1500 spiral fitting machine, SBPC1500 plasma cutter, SBLR-600 inverter welder, SBTF-1500, SBTF-1602 and SBTF-2020 spiral tubeformer family — delivers the complete fabrication capability for the modern Australian FIFO accommodation village HVAC ductwork scope.

SBKJ Group engineering office at Box Hill North, Victoria, supports HVAC fabricators bidding into the Pilbara iron ore province, the Bowen Basin metallurgical coal, the Surat Basin coal seam gas, the Galilee Basin coal, the WA Goldfields gold, the NSW Hunter Valley coal, the Mt Isa lead-zinc-silver-copper, the Olympic Dam copper-gold-uranium, and the remote construction village markets across Australia. The engineering team has supported FIFO accommodation village projects from initial duct sizing through commissioning and handover to the operating contractor.