Beer Brewery, Wine Winery, Craft Distillery, Gin Distillery, Cider and Non-Alcoholic Beverage Manufacturing HVAC Duct Guide

Why industrial beverage manufacturing HVAC is its own engineering discipline

An industrial-scale brewery, winery or distillery has more in common with a refinery or a chemical plant than with a comfort-cooling project. The Australian large-format beverage manufacturer routinely puts five hazards under the same roof — combustible grain or sugar dust at the front end, saturated humidity and 100 degree-Celsius vapour over a 200 hectolitre brewing copper, CO₂ asphyxiation in a fermentation cellar holding twelve cylindro-conical fermenters at active primary, ethanol vapour inside a Zone 1 still room or a barrel-aged spirit warehouse, and ammonia refrigeration on a charge that may exceed three tonnes — alongside the steady-state food-safety obligation under the FSANZ Food Standards Code Chapter 3 and the audit cycle under ISO 22000, HACCP, BRC or SQF that the export-oriented Australian operators all run.

This guide is the engineering brief SBKJ uses with industrial beverage clients across Australia. It complements rather than overlaps the broader brewing, distilling and winery HVAC duct guide — that earlier reference walks a craft-to-mid-tier operator through the standards stack, the material decision tree and the zone-by-zone walkthrough at general depth. This one targets industrial depth: the design cases that only show up at multi-million-hectolitre brewery throughput, multi-million-litre winery vintage volumes, large-format pot-still and column-still distillation, multi-thousand-cask spirit ageing warehouses, gin botanical extraction at production scale, large bottling and packaging lines running at 60,000+ units per hour, and the non-alcoholic beverage plants of Coca-Cola Europacific Partners, Asahi Beverages, Frucor Suntory, Nestlé Waters and Bundaberg Brewed Drinks. The compliance stack, the hazardous area dossier, the dust hazard analysis, the ammonia AS/NZS 5149 design and the spirit-ageing extract are all heavier; the material decision tree is more aggressive on stainless; and the SBKJ machinery configuration is closer to the food-grade specification used in pharmaceutical and dairy work than to the general comfort-cooling defaults.

The structure follows that depth-first logic. We first cover the five hazards. We then walk through the process zones at industrial depth — not as a one-line description per zone but as a duct schedule entry per zone, with material, leakage class, fan type, sensor stack and post-installation validation specified. We then map the Australian operator landscape across beer, wine, spirits, cider and non-alcoholic in enough detail that the regulatory and engineering tier is clear at every named site. We then drill into the Australian standards stack, the SBKJ machinery configuration, the FAT and SAT protocol, the lead time and the Box Hill North support model.

1. The five things that make industrial beverage HVAC different from a craft-scale operation or a comfort fit-out

Latent humidity at industrial brewing copper scale. A 200 hectolitre brewing copper at 6 to 10 percent evaporation per hour drives 1.2 to 2 tonnes of water vapour into the air per hour. Across a four-vessel brewhouse running concurrent brews on a 24/7 cycle the cumulative latent load is industrial-process scale rather than building-services scale. The boil-vapour stack must capture 100 percent of the rising plume with no flash-back, and the heat recovery scope (vapour condenser into hot-liquor tank, wort pre-heater or low-temperature district heat) is mandatory at this scale rather than optional. The duct material is 304L stainless with full TIG-welded seams; galvanised duct over a brewing copper at industrial scale will pinhole at the lap seams within 6 to 12 months. CUB Yatala, CUB Abbotsford, CUB Cascade Tasmania, Lion XXXX Brisbane, Lion Tooheys Lidcombe and Coopers Regency Park all run condensate-resistant stainless vapour stacks; the smaller of those plants ships more than five times the volume of even the largest Australian craft brewery.

CO₂ evacuation at fermentation hall scale. A 200 hectolitre CCT fermenter at 14 degrees Plato wort produces approximately 1.5 to 1.8 tonnes of CO₂ over a 4-to-5-day primary fermentation. Twelve fermenters running concurrent primary on a Tuesday morning produce 18 to 22 tonnes of CO₂ per week into a hall that may be 12,000 cubic metres in volume. Without engineered extraction the cellar reaches 5,000 ppm in under 20 minutes of unmonitored operation. Industrial breweries answer this with three layers: (a) dedicated CO₂ capture piped from each fermenter through a 304L stainless collection header to a recovery skid, where the recovered gas is purified and either re-used in carbonation or sold to the merchant market — CUB has run fermentation CO₂ recovery for decades and Coopers, Lion and the larger craft producers all now operate at recovery scale; (b) cellar floor-level extract at 6 to 12 air changes per hour as the secondary path; (c) continuous CO₂ and oxygen monitoring at slab and breathing height with audible/visual alarm at 5,000 ppm, forced evacuation at 15,000 ppm and emergency power back-up on the exhaust fans. The Safe Work Australia 8-hour TWA is 5,000 ppm and the 15-minute STEL is 30,000 ppm; lethal exposure starts at 70,000 to 100,000 ppm in minutes, and the oxygen displacement risk (the cellar oxygen partial pressure must remain in the 19.5 to 23.5 percent band) is the silent killer in CO₂-pooling environments.

Ethanol vapour at distillery scale. Industrial distillation at Australian rum, whisky and gin scale — Bundaberg Distilling Co at Bundaberg producing Australia’s highest-volume distillate, Beenleigh Distillery’s rum operation, Lark’s Pontville production facility, Sullivans Cove Cambridge, Starward Port Melbourne, Archie Rose Rosebery, Four Pillars Healesville — produces ethanol vapour streams that are flammable, classified hazardous atmospheres under AS/NZS 60079.10.1. The Lower Explosive Limit of ethanol vapour in air is 3.3 percent by volume (33,000 ppm); the Workplace Exposure Standard is 1,000 ppm 8-hour TWA. Spirit safes, still vapour vents, foreshots and feints receivers, spirit receivers, cask filling stations, bulk ethanol storage, spirit dilution rooms, bottling rooms and spirit ageing warehouses all require hazardous area classification, with HVAC equipment in classified zones carrying matching IECEx Ex-d, Ex-e or Ex-ia marking. The classification dossier is not a nice-to-have — the insurer will not write the policy without it, the state safe-work regulator will issue improvement notices on sight, and the consequences of a still-room ignition source aligning with an ethanol leak are catastrophic.

Grain, malt, sugar and botanical dust at industrial milling scale. The combustible dust hazard scales with throughput. A 5,000-tonne malt silo, a 12-tonne-per-hour roller mill, a 200-bag-per-hour dump enclosure, a 10-tonne-per-day gin botanical milling bench and a 50-tonne-per-day sugar silo all share the same NFPA 660 dust hazard analysis methodology with progressively larger explosion vent areas. Barley malt dust Kst is typically 100 to 200 bar.metre per second (St 1 to St 2). Sugar dust used in adjunct brewing and in non-alcoholic carbonated soft drinks is similarly explosible. Gin botanical dust (juniper, coriander, orris root, angelica root, citrus peel, cubeb, cassia) is both a respiratory allergen at Safe Work Australia’s 4 mg/m³ grain dust ceiling and a combustible dust in its own right at certain particle sizes. The duct schedule is conductive 304L stainless or carbon steel bonded and earthed to less than 1 megohm at every flange, explosion vent panels on every protected volume, spark detection at the mill outlet, rotary airlock isolation between the dust collector and the conveying line, and ATEX-rated electrics in every Zone 21 or Zone 22 dust atmosphere.

Ammonia refrigeration at production scale. Australian large-format breweries, wineries and distilleries all use R-717 ammonia as the primary refrigerant for the lagering cellar evaporators, the wine tank-jacket chillers, the spirit dilution chillers, the CO₂ recovery liquefier and the conditioning cellar coils. The charge can exceed three tonnes at industrial sites. The machinery room is classified Class T2 under AS/NZS 5149 with continuous mechanical ventilation 0.014 m³/s per m² floor area normal and 30 air changes per hour emergency exhaust on ammonia detection trip at 25 ppm. Safe Work Australia’s WES for ammonia is 25 ppm 8-hour TWA and 35 ppm 15-minute STEL; alarm at 25, evacuate at 150, emergency trip at 250. The exhaust duct is 304L stainless single-pass to outdoor, with discharge minimum 3 metres above roof, 8 metres horizontal from any intake and 15 metres from any occupied opening, oriented away from prevailing wind. Wet ammonia mist condensing on galvanised destroys the zinc coating within weeks — industrial-scale ammonia plants are 304L or 316L throughout the exhaust train.

None of these five hazards is exotic. They are well-characterised, well-documented and supported by Australian standards (AS 1668.2, AS 4254, AS/NZS 1677, AS/NZS 5149, AS/NZS 60079 series, AS 1940, AS 3957) and international references (NFPA 660 dust, NFPA 68 venting, NFPA 69 prevention, ASHRAE Applications Handbook Chapter 22 refrigerated processing and Chapter 35 industrial drying). What changes at industrial scale is the consequence: a 5,000 hL cellar at a craft brewery with a CO₂ alarm fault is a problem; a 200,000 hL fermentation hall at CUB Yatala with the same fault is a multiple-fatality event waiting for the wrong shift.

2. Malt silo and bulk handling — NFPA 660 combustible dust at industrial scale

Industrial breweries receive barley, wheat and rye malt by bulk pneumatic tanker or rail car. Storage is in vertical silos of 50 to 5,000 tonnes capacity. Every transfer point — tanker discharge, silo filling, silo discharge, grist case loading, bag dump for specialty malts — generates dust. The dust hazard analysis under AS 3957 and NFPA 660 begins at the truck dock and ends at the mash kettle. Each enclosed dust handling volume gets an explosion vent area calculated per NFPA 68 on chamber volume, Kst (typically 100 to 200 bar.metre/second for malt), Pmax and reduced pressure target.

The silo top is the highest-risk volume because it combines the largest free-fall dust generation event (pneumatic discharge) with the largest enclosed volume. Vent panels discharge to a safe outdoor location with no occupied building within the discharge plume — typically directly upward through the silo roof or laterally through a vent stack with deflector plate. Silo discharge feeds a covered conveying line in conductive 304L stainless or carbon steel bonded and earthed to less than 1 megohm at every joint per AS/NZS 60079.14. Pickup hoods at every transfer point are sized to capture dust at source at face velocity 1.0 to 1.5 m/s — capturing at the source uses a fraction of the airflow of room-scale dilution. The dust extract train terminates in a centralised baghouse or cartridge filter sized for the worst-case loading at the silo top, with isolated explosion venting on the filter housing, spark detection and water-spray suppression upstream of the filter, and rotary airlock between the filter and the return line to prevent flame propagation.

The Australian operators at this scale — CUB Yatala in Queensland, CUB Abbotsford in Melbourne, CUB Cascade in Hobart, Lion XXXX in Milton Brisbane, Lion Tooheys at Lidcombe, Lion James Boag in Launceston, Coopers at Regency Park Adelaide — all run silo top dust extract through dedicated stainless trains. The smaller of those plants handles more malt per day than most craft breweries process per year. The dust hazard analysis sign-off and the explosion vent panel certificates are mandatory inspection items under state work-safety regulation.

3. Malt mill (grain crush) — the dust-explosion design case

The malt mill is the highest dust loading point in the brewery. A four-roll or six-roll mill processing 12 tonnes per hour of malt at 5 percent crush losses generates 600 kg per hour of fine dust, and fine dust is more explosible than coarse because the specific surface area is higher and the minimum ignition energy is lower. Mill rooms run to a dedicated dust collection circuit with: NFPA 68 explosion venting on the mill enclosure and on the dust collector, NFPA 69 explosion prevention through nitrogen inerting where venting is impractical, spark detection at the mill outlet with water-spray suppression triggered within 30 milliseconds of detection, rotary airlock isolation between the dust collector and the pneumatic transfer to the grist case, and conductive bonded ductwork verified to less than 1 megohm.

AS/NZS 60079.10.2 treats the mill room as Zone 21 (dust atmosphere likely to be present in normal operation) inside the mill enclosure and Zone 22 (unlikely but possible) in the surrounding room. All electrical equipment inside the zone carries matching IECEx Ex-tD marking. Lighting, motors, dampers, sensors and fan impellers all comply. Spark-resistant fan impellers (aluminium bronze or matched alloy) are mandatory inside the dust extract train. The Australian standards stack is harmonised with the international NFPA reference set — auditors check both, and Australian state safe-work inspectors increasingly cite NFPA 660 (which consolidates the former NFPA 484 grain dust standard and NFPA 654 combustible particulate solids) where the Australian standard is silent.

Housekeeping is the operational reliability layer. Dust accumulation above 3 mm on horizontal surfaces is an explosion hazard in its own right under NFPA 660. Documented housekeeping protocol with frequency, signed daily, monthly third-party audit, plus a quarterly dust hazard analysis re-validation, is the standard at industrial sites. The mistake we see at small operations — treating the mill room as a low-risk zone because the throughput is modest — does not survive an insurance loss-prevention inspection.

4. Mash kettle, lauter tun and brewing copper — vapour, latent load and AS 4036 pressure equipment

The brewing hot side runs three vessels of escalating thermal severity. The mash kettle (or mash tun) dissolves malt sugars at 60 to 80 degrees Celsius in a 60 to 90 minute mash rest, with multi-step enzymatic conversion for higher-fermentability profiles. The lauter tun separates the sweet wort from the spent grain at similar temperature. The brewing copper (wort kettle) boils the wort at 100 degrees Celsius for 60 to 90 minutes with addition of hop pellets for bitterness, flavour and aroma — 6 to 10 percent evaporation per hour is the design rate.

All three vessels are pressure equipment under AS 4036 (design) and AS 4037 (inspection) when they operate at 1+ bar gauge, which the brewing copper routinely does on a steam-jacketed unit. The boiler feeding the steam jacket is itself AS 4036/AS 4037 pressure equipment with state safe-work boiler inspector certification on annual renewal cycle. AS 1318 governs the flue stack height and dispersion modelling for any combustion source on site.

HVAC scope: vapour hood capture above each vessel at 1.5 to 2 m/s face velocity, ducted in 304L stainless to a roof discharge stack. For the brewing copper, a vapour condenser is the standard heat-recovery intervention at industrial scale — recovering 60 to 80 percent of the 200 to 400 kW per hour of latent load into hot-liquor tank pre-heat or wort pre-heater feed, with payback typically 2 to 4 years at 50,000+ hL/year. The hood is sloped to drain condensate back to a hygienic floor drain rather than dripping onto the open vessel below; the duct is internally polished and free of ledges to prevent biofilm formation. AS 4254 Class B or C seal performance is specified on the vapour stack to contain the high latent load.

5. Whirlpool, wort cooling and oxygenation

The whirlpool, sitting at 85 to 95 degrees Celsius with no boil agitation, produces a smaller but still significant vapour stream. The HVAC scope mirrors the kettle hood at reduced load. Wort cooling through a plate heat exchanger drops wort to fermentation pitching temperature (8 to 22 degrees Celsius depending on yeast strain and beer style). The cooling water primary side feeds back to the hot-liquor tank for heat recovery, and the glycol secondary side feeds back to the chiller plant. The wort oxygenation step injects sterile filtered air or pure oxygen into the wort line before it reaches the fermenter; the HVAC scope here is sterile-grade filtration on the air supply (HEPA H13 cartridge) rather than ductwork in the conventional sense.

6. CCT fermentation cellar — CO₂ evacuation, CO₂ recovery and ammonia tank jacketing

The cylindro-conical fermenter (CCT) cellar is the most HVAC-critical zone in any industrial brewery. CCTs hold the wort at controlled temperature for 4 to 14 days primary fermentation depending on style. Lager fermentation runs 10 to 14 degrees Celsius primary with diacetyl rest at 18 to 22 degrees Celsius. Ale fermentation runs 18 to 22 degrees Celsius primary with conditioning down to 0 to 4 degrees Celsius. Setpoint stability is plus or minus 1 degree Celsius across all vessels concurrently. Tank cooling is via internal coil or jacket fed from a glycol secondary loop chilled by R-717 ammonia primary under AS/NZS 5149.

The ambient cellar HVAC handles three loads concurrently: (a) sensible cooling to hold the room at 4 to 16 degrees Celsius depending on the fermentation style mix, (b) latent dehumidification because saturated CO₂ carries condensate, (c) CO₂ extraction. At industrial scale the cellar floor area exceeds 1,000 m² with ceiling heights of 12 to 20 metres to accommodate CCT geometry, giving a room volume of 12,000 to 20,000 m³. Air change rate is 6 to 12 ACH for worst-case batch concurrency, with low-level extract grilles at 200 to 400 mm above slab because CO₂ is 1.5 times denser than air and pools at floor level.

Fixed CO₂ sensors are mandatory: one at breathing height (1.5 m above slab) and one at slab level (300 mm above slab) per cellar zone, with audible and visual alarm at 5,000 ppm and forced evacuation lockout at 15,000 ppm. Oxygen sensors at slab level alarm at 19.5 percent. The exhaust fans must remain operational on emergency power because power loss during active fermentation is a category-A asphyxiation event. Door interlocks preventing entry when CO₂ is above 5,000 ppm or below 19.5 percent O₂ are insurer-driven best practice and standard at industrial-scale sites. Confined space entry into fermenters for cleaning and inspection is governed by state WHS regulation and requires atmospheric monitoring permit, ventilation purge to less than 1,000 ppm CO₂ and oxygen at 20.9 percent, and standby attendant with rescue plan.

The duct material is 304L stainless throughout the cellar exhaust. Galvanised duct in this environment — saturated humidity, near-zero temperature in lagering, slightly acidic pH from CO₂ dissolved in condensate — pinholes within 12 to 18 months at industrial scale.

7. CO₂ recovery plant — from waste to revenue

At industrial scale, the fermentation CO₂ stream is a recoverable resource rather than a waste stream. The recovery skid takes blow-off gas from each CCT through a dedicated 304L stainless collection header at slight positive pressure, scrubs it through a foam separator (to remove entrained kräusen foam), a water scrubber (to remove acetaldehyde and other early-fermentation aromatic carry-over), an activated carbon polish (to remove residual ethanol vapour), then a series of compression, drying and liquefaction stages to produce food-grade liquid CO₂ at minus 20 degrees Celsius and 18 to 22 bar.

The recovered CO₂ is used in: (a) finished beer carbonation, replacing purchased food-grade CO₂; (b) packaging counter-pressure during filling; (c) tank top-pressure for beer transfer; (d) cellar nitrogen-CO₂ blanket on bright beer tanks; (e) sale to the merchant gas market for use in soft drinks, food packaging, fire suppression and medical applications. CUB has run fermentation CO₂ recovery for decades; Coopers Regency Park and Lion at major sites operate at recovery scale; the larger craft producers (Stone & Wood, Pirate Life, Boatrocker, Capital Brewing, Black Hops) are increasingly installing recovery as CO₂ merchant pricing volatility and supply chain shocks make the payback attractive.

HVAC scope inside the recovery plant: the skid itself is classified Zone 2 under AS/NZS 60079.10.1 because residual ethanol carry-over from the early-fermentation phase is flammable. All motors, dampers, sensors and lighting inside the skid envelope are IECEx Ex-rated. Ventilation is sized to keep ambient ethanol below 25 percent of LEL under worst-case leak scenarios. The compressor heat rejection drives an ammonia condenser that itself is in an AS/NZS 5149 Class T2 machinery room. The duct fabrication touches several SBKJ product lines: SB-ZF1500 stitchwelder for the recovery stack and CO₂ collection header welded plenum, SBAL-V 304L for the ambient ventilation supply and return, and SBSF-1525 for the round duct flanging on the long horizontal runs.

8. Krauesening and lagering cellar — cold maturation 0 to 4 degrees Celsius

After primary fermentation, beer destined for lager styles is conditioned at 0 to 4 degrees Celsius in lagering tanks for 1 to 3 months — the Munich-style lager maturation that defines clean lager character. Krauesening (the addition of actively fermenting wort to mature lager to drive secondary fermentation and natural carbonation) is the traditional German-style maturation route. Modern industrial breweries often blend both styles depending on the brand portfolio. The HVAC scope is full cold-storage construction: vapour barriers continuous on the warm side of every wall and ceiling, low-leakage Class C duct joints under AS/NZS 4254, insulation continuous through every penetration, condensation management at the duct skin via continuous external insulation with closed-cell PIR or PUR at 100 to 150 mm thickness, drip pans under duct that crosses occupied conveying lines.

The single most common failure mode in lagering cellars is condensation dripping from poorly insulated duct penetrations through the cold envelope. The fix — continuous insulation through the penetration, drip pans, sealed vapour barrier — is cheap at install and expensive in retrofit. Refer to the cold storage and cold chain HVAC duct guide for full envelope detail and the AS/NZS 5149 ammonia evaporator coil plenum scope.

9. Ale conditioning cellar — 16 to 22 degrees Celsius warm secondary

Top-fermenting ale styles (Australian craft pale ale, IPA, stout, porter, sour ale, hazy IPA) condition at 16 to 22 degrees Celsius after primary fermentation. The ale cellar HVAC is warmer than the lagering cellar but the duct material specification remains 304L stainless because CIP cycles and the wet environment are unchanged. Air change rate is 6 to 10 ACH with CO₂ evacuation identical to the primary cellar scope.

10. Filtration room — DE diatomaceous earth, sheet filter, crossflow MF/UF

Beer destined for filtered styles (lager, pilsener, kräusen-filtered ale) passes through diatomaceous earth (DE) filtration, plate-and-frame sheet filtration, or crossflow membrane filtration (MF/UF). The DE filter is the highest HVAC-loaded option: DE (kieselguhr) is crystalline silica, a respiratory hazard with Safe Work Australia WES at 0.05 mg/m³ respirable. The DE filter room needs local exhaust ventilation per AS 1668.2 with HEPA-grade discharge filtration, single-pass extract through 316L stainless because the silica abrades the duct interior over time. Operator PPE includes P2 respirator and disposable coveralls during DE handling.

Sheet filtration is wet-process and lower-risk — the HVAC scope reduces to sanitary ambient ventilation and CIP exhaust. Crossflow membrane filtration is similar. Industrial Australian breweries typically run crossflow as the primary filtration route with DE as the polishing stage for premium clarity; smaller operations may rely on DE alone, raising the HVAC scope.

11. CIP cleaning — caustic, acid, sanitiser and the dedicated chemical exhaust leg

Clean-in-place (CIP) cleaning is universal in beverage manufacturing. A typical CIP cycle for a brewery, winery or distillery vessel: cold water pre-rinse, hot caustic wash (2 to 4 percent sodium hydroxide NaOH at 70 to 85 degrees Celsius for 15 to 30 minutes), warm intermediate rinse, hot acid wash (1 to 2 percent nitric or phosphoric acid at 60 to 70 degrees Celsius for 10 to 20 minutes), cold final rinse, sanitiser application (peracetic acid PAA at 0.05 to 0.15 percent or sodium hypochlorite at 100 to 200 ppm available chlorine).

The Safe Work Australia WES values that drive the HVAC scope: peracetic acid 0.4 ppm STEL, chlorine 0.5 ppm STEL, ammonia 25 ppm TWA, formaldehyde 1 ppm STEL (rare sterilant in beverage), caustic NaOH and nitric acid as respiratory irritants without numeric WES but driving local extract at 0.5 to 1.0 m/s face velocity over every wash bay. The CIP chemical store is negatively pressurised minus 5 Pa relative to the surrounding plant. Eye wash and emergency shower per AS 3859 are within 10 metres of every chemical handling point.

The CIP exhaust leg is 316L stainless or polypropylene-lined ducting because caustic and acid mists pinhole 304L stainless within 3 to 5 years and pinhole galvanised within 6 to 12 months. The fan wheel coating is chemical-resistant epoxy or PFA. The discharge stack height is set under the state EPA permit conditions. We have seen multiple Australian craft and mid-tier operators specify ordinary galvanised CIP exhaust ductwork to save on capital, only to face full replacement within 18 months and a state safe-work improvement notice in the interim. The saving on sticker price is comprehensively erased by the lifecycle cost.

12. Carbonation and packaging — bottle, can, keg, bag-in-box

Industrial packaging halls run at 30,000 to 80,000 units per hour on bottle and can lines, 600 to 1,200 kegs per shift on keg lines, and 5,000 to 15,000 packs per hour on bag-in-box. The HVAC scope: high-volume displacement ventilation supplying at 18 to 22 degrees Celsius low and returning high, sanitary 304L stainless duct with washdown-rated equipment to IP65, sloped ducts pitched 1 in 50 to drain points, sanitary surface finish to Ra 0.8 micrometre or better.

Conveyor lubricant overspray, bottle warmer steam, can rinser droplet aerosol, pasteuriser tunnel exhaust and filler bowl overflow all add humidity and chemical load to the room air. The displacement ventilation pattern must avoid disturbing open-product zones at the filler bowl and capper — supply low, return high, with air diffuser positioning that does not direct flow toward the filling head. Modern Australian packaging halls (CUB Yatala, CUB Abbotsford, Lion XXXX, Coopers Regency Park) running multi-line concurrent operation use dedicated AHUs per line with H13 HEPA on the filler enclosure supply and washdown-rated 304L stainless duct on the local exhaust.

The bottle wash sub-zone has its own HVAC requirement: caustic carry-over from bottle wash bottles into the rinse and into the room air drives a dedicated 316L stainless or polypropylene-lined extract leg with chlorine sensing (because hypochlorite sanitation is universal in bottle wash) alarming at 0.5 ppm STEL. The keg wash sub-zone is parallel but smaller scale and the duct is correspondingly modest.

13. Wine white fermentation 14 to 17 degrees Celsius and red fermentation 25 to 30 degrees Celsius

Industrial Australian wineries (Treasury Wine Estates, Pernod Ricard Australia, Accolade Wines, Casella Family Brands, McWilliam’s, De Bortoli, Brown Brothers, Yalumba, Henschke, Tyrrell’s, Tahbilk) handle vintage crush volumes in the tens of thousands to hundreds of thousands of tonnes. White wine fermentation is in stainless tanks at 14 to 17 degrees Celsius with internal cooling coils fed from glycol secondary. The white tank hall HVAC ambient is 16 to 20 degrees Celsius with 6 to 10 ACH and CO₂ evacuation identical to brewery CCT cellar scope at proportional volume.

Red wine fermentation runs at 22 to 28 degrees Celsius for premium reds (Penfolds Grange, Wynns Coonawarra, Wolf Blass Black Label, Henschke Hill of Grace, Pepperjack Shiraz) or 25 to 30 degrees Celsius for higher-extraction styles. The heat of fermentation surge during vintage is the design case: a 200,000-litre red ferment generates 50 to 80 kW of metabolic heat at peak, requiring tank-jacket cooling fed from a glycol chiller and ambient HVAC sized at 8 to 12 ACH at 22 to 28 degrees Celsius during the harvest peak. CO₂ evacuation is more aggressive than for white wine because the open or semi-closed tanks used for red fermentation vent CO₂ directly into the hall atmosphere — low-level extract grilles, fixed sensors, alarm at 5,000 ppm, forced lockout at 15,000 ppm.

Sparkling base wine fermentation runs at 12 to 14 degrees Celsius for the méthode traditionnelle base wine (the base wine that subsequently goes through secondary bottle fermentation for sparkling production). Australian sparkling producers (Yellowglen, Domaine Chandon at Coldstream, Seppelt Salinger, Petaluma Croser, House of Arras at Pipers River, Stefano Lubiana at Granton, Frogmore Creek, Bay of Fires, Heemskerk, Jansz at Pipers Brook, Cloudy Bay Pelorus by extension) run dedicated sparkling base tanks at the cooler band.

14. Malolactic fermentation, pressing and racking

Malolactic fermentation (MLF) converts sharp malic acid to softer lactic acid through the activity of Oenococcus oeni. It runs warm at 18 to 22 degrees Celsius. Most Australian Chardonnay and almost all Australian red wine goes through MLF. Some wineries co-locate MLF with primary red fermentation; others run a dedicated warm room at 18 to 22 degrees Celsius with 6 to 10 ACH. Pressing extracts the wine from the lees (yeast and grape solids) using bladder presses or basket presses; the press hall HVAC is similar to fermentation but with shorter occupancy outside vintage.

15. Wine barrel cellar — American and French oak 225-litre barriques

The barrel cellar is the most HVAC-defining zone in a premium winery. American oak and French oak barriques (Allier, Vosges, Tronçais, Limousin, Nevers) hold wine for 6 to 36 months. The target environment is 12 to 16 degrees Celsius and 65 to 75 percent relative humidity, with very slow air movement (0.1 to 0.3 m/s at the barrel surface) to avoid drying barrel surfaces. Below 65 percent RH the wine evaporates faster than the alcohol, concentrating alcohol and stripping fruit; the cork dries and oxygen ingress accelerates. Above 75 percent RH the cooperage and the cellar timber accumulate mould and the cellar fauna shifts unfavourably.

The HVAC scope is summer dehumidification, winter humidification, modest sensible cooling, and very low air movement. Australian wine regions vary in load profile: Coonawarra, Margaret River, Yarra Valley, Barossa Valley and McLaren Vale all see summer dehumidification and winter humidification loads; Hunter Valley has high dehumidification year-round (subtropical influence); Tasmania (Tamar Valley, Coal River, East Coast, Pipers River, Huon Valley) sees less dehumidification and more winter humidification. Subterranean cellars (Coonawarra terra rossa cellars at Wynns and Penley, Henschke’s Hill of Grace cellars, parts of Yalumba and Tahbilk) provide natural temperature stability and reduce the HVAC scope dramatically; modern above-ground barrel halls (Treasury Wine Estates’ larger sites, Pernod Ricard Australia’s Barossa operations, large Margaret River and Yarra Valley operations) use full mechanical conditioning.

Duct material in a barrel cellar is typically 304L stainless for the supply because cellar air is high humidity year-round and galvanised will pinhole at lap seams within 3 to 5 years. Return air ducting in some warehouse configurations can be galvanised provided the run is short and accessible for replacement; we recommend stainless throughout for premium operations to avoid the inspection burden.

16. Cellar door, tasting room and worker amenity

Almost every Australian winery, brewery and distillery now operates a cellar door, tap room or tasting room as the retail front end. Cellar door HVAC is comfort cooling with humidity control, scoped like a hospitality fit-out: 10 L/s/person under AS 1668.2 occupancy, displacement ventilation, comfortable temperature 22 to 24 degrees Celsius and 40 to 55 percent RH. Margaret River, Yarra Valley, Mornington Peninsula, Hunter Valley, Tasmanian whisky tasting rooms (Lark Hobart, Sullivans Cove Cambridge, Hellyers Road Burnie) and Barossa cellar doors all run hospitality at scale. Sensory panel and tasting laboratory rooms (where the master blender or oenologist evaluates samples) need tighter control: 20 to 22 degrees Celsius, 50 percent RH, single-pass exhaust, no recirculation of room air to avoid cross-contamination of aromatic samples, low-VOC interior finishes.

Restaurant kitchens attached to cellar doors and tap rooms (an increasingly common revenue stream at Australian breweries and wineries) follow the scope detailed in our commercial kitchen exhaust HVAC duct guide. Worker amenity (change rooms, lunch room, toilets) follows the AS 1668.2 occupancy and exhaust schedule with no overlap into the process HVAC scope.

17. Distillery pot still and column still — the AS/NZS 60079 Zone 1 design case

Distillation is the defining HVAC scope of any distillery. The pot still operation (Scotch-style single malt, Australian craft single malt at Lark Pontville and Hobart, Sullivans Cove Cambridge, Overeem, Hellyers Road, Bakery Hill, Limeburners at Great Southern, Black Gate Mendooran) uses copper pots heated by direct steam coil or external steam jacket, with a swan neck rising to a condenser. The column still operation (grain whisky, vodka, neutral spirit for gin, rum at Bundaberg and Beenleigh) uses tall continuous columns producing ethanol vapour at high concentration. Both produce ethanol vapour streams that are flammable.

Hazardous area classification under AS/NZS 60079.10.1: the inside of the still pot vapour space, foreshots/feints/spirit receivers and the worm or shell-and-tube condenser interior are Zone 0 (continuous). The spirit safe sample tap, receiver vents, condenser cooling-water exit and a small radius around them are Zone 1 (likely in normal operation). The surrounding still room is Zone 2 (unlikely but possible from a small leak). The broader distillery hall outside the vent radius is non-classified provided ventilation is adequate.

HVAC inside the classified zone must carry matching IECEx Ex marking. Motors are Ex-d or Ex-e, instruments are Ex-ia (intrinsically safe), dampers use intrinsically safe actuators, ductwork is conductive 304L stainless or carbon steel bonded and earthed to less than 1 megohm at every flange per AS/NZS 60079.14. Spark-resistant fan impellers (aluminium bronze or matched alloy). Continuous ethanol gas detection at low (300 mm above slab) and breathing height (1.5 m), alarm at 25 percent of LEL (8,000 ppm), exhaust ramp to maximum, audible/visual evacuation alert at 50 percent LEL, full evacuation and shutdown at 100 percent LEL. The pot still vapour stack discharges at AS 1318 dispersion-modelled height with no spark or ignition source within 10 metres of the discharge plume.

The dossier is not a starter pack. Generic radii (1 metre Zone 1 around the spirit safe, 3 metres Zone 2 around the still vapour vent) are commonly cited starting points but the final classification must come from a documented dossier with input from a competent person assessing the actual still geometry, ventilation rate, prevailing wind on the still room enclosure, and worst-case spill scenarios. Australian craft distillers operating in shared industrial estates (Manly Spirits in Brookvale, Archie Rose at Rosebery, Brogan’s Way in Richmond, Boatrocker in Braeside, Imbibers in Tasmania) face additional scrutiny because the classified zone radius interacts with neighbouring tenancies.

18. Spirit dilution and spirit bottling — cutting to bottling strength under AS 1940

Spirit dilution rooms reduce the new-make spirit from approximately 70 percent ABV (or higher for column-still neutral) to the bottling strength of 37.5 to 47 percent ABV by addition of demineralised water. The room is classified Zone 2 because diluted spirit is still flammable; the bulk ethanol piping feeding the dilution station is under AS 1940 storage and handling of flammable and combustible liquids, with bunding compatible with the duct routing, emergency relief venting on storage tanks, and ATEX-classified electrics.

The spirit bottling line is the next zone. The room ventilation is sized to keep ambient ethanol vapour concentrations below 25 percent of LEL under worst-case spill scenarios (8,000 ppm), with the operational target well below the 1,000 ppm Safe Work Australia 8-hour TWA. The bottle filler enclosure is a Zone 1 location with Ex-rated electrics; the surrounding hall is Zone 2 within a defined radius and non-classified outside. Local extract at the filler discharge and at the bottle cleaning station captures ethanol vapour at 0.5 to 1.0 m/s face velocity. Discharge is to atmospheric stack at AS 1318 height. Spark-resistant fan impellers and IECEx Ex-d motor on the local extract fan are mandatory.

Australian distillers at this scale — Bundaberg Distilling Co (Australia’s highest-volume distillery, Diageo-owned, producing Bundaberg Rum at industrial throughput), Beenleigh Distillery, Manly Spirits, Archie Rose, Four Pillars (Lion 50 percent acquisition), Australian Distilling Co Brisbane, Adelaide Hills Distillery Nairne, Ester Distilling Adelaide, Bass & Flinders Mornington Peninsula, Mt. Uncle Walkamin — all run dedicated spirit dilution and bottling rooms with the full AS 1940 / AS/NZS 60079 stack.

19. Spirit ageing warehouse — angels share, carbon filter and RTO on the modern climate-controlled rack warehouse

The whisky and rum ageing warehouse is the HVAC oddity of the entire beverage industry. Casks at 60 to 65 percent ABV lose 2 to 4 percent of their volume per year to ethanol and water vapour evaporation. A warehouse holding 1,000 200-litre casks over a 10-year ageing cycle loses 100 to 200 kilolitres of pure ethanol vapour into the building atmosphere. Traditional dunnage and racked warehouses are deliberately unconditioned to preserve the wood-spirit interaction chemistry that develops ester, vanillin, lactone and phenolic flavour over years of slow oxygen ingress through the cask wood.

The unconditioned warehouse still requires engineered ventilation. Ambient ethanol must stay well below 25 percent of LEL (8,000 ppm); the operational target stays below the Safe Work Australia 1,000 ppm 8-hour TWA. The HVAC scope: low-level passive louvres at floor level on prevailing-wind elevations to admit fresh air, dedicated mechanical extract from ridge level in 304L stainless duct with IECEx Ex-d extract fan motors, continuous ethanol gas detection at slab and breathing height with alarm at 25 percent LEL, no electrical equipment inside the classified zone unless Ex-rated, conductive bonded duct earthed to less than 1 megohm, AS 1940 spill containment and bunding around any cask storage point, intrinsically safe fire detection (heat detection rather than smoke), foam suppression where AS 1940 risk assessment requires it. The ridge-level extract plenum is a long-duration high-corrosion duct application — the ethanol vapour plus the cycling condensate pinholes lap-seam galvanised duct within 12 to 18 months. SBKJ SB-ZF1500 stitchwelder fabrication for the welded-seam stainless plenum is the durable answer.

Modern climate-controlled rack warehouses (a small but growing segment, used by some North American producers and increasingly by Australian operators looking for accelerated maturation or consistent climate-control output) handle the ethanol vapour differently. Rather than venting to atmosphere through louvres, the extract train discharges through one of two polish options: (a) an activated carbon filter that adsorbs ethanol vapour, with the carbon bed thermally regenerated on a cycle and the desorbed ethanol either condensed for recovery or burned; (b) a regenerative thermal oxidiser (RTO) that destroys ethanol vapour to CO₂ and water at 800+ degrees Celsius through a ceramic-bed thermal cycle.

The polish option drivers: (i) community amenity — ageing warehouses smell strongly of whisky for a kilometre downwind in stable air, and Australian distilleries in urban or peri-urban locations face neighbour complaints; (ii) state EPA volatile organic compound (VOC) emission limits, which for a multi-thousand-cask warehouse can exceed the threshold under EPA Victoria, NSW EPA or EPA Tasmania conditions; (iii) carbon-counting and Scope 3 emissions reporting for ESG-driven listed operators (Lark, the Diageo-owned operations, Treasury Wine Estates’ spirits operations); (iv) recovery economics where the ethanol value plus the carbon-credit value exceeds the operating cost of the polish unit.

The SBKJ recommendation for the polish-system duct: SB-ZF1500 stitchwelder for the RTO inlet plenum (high-temperature stainless), SBAL-V 304L for the ambient warehouse extract collection, SBSF-1525 round duct flange for the carbon-filter housing connection, IECEx Ex-d fans throughout, conductive bonding verified.

20. Gin distillery — botanical store, vapour-infusion head and the dust-allergen scope

Gin distilleries add three HVAC scopes on top of the basic distillation scope. The first is the botanical store. Gin botanicals — juniper berries (the defining botanical, by EU and Australian regulation), coriander seed, citrus peel (dried lemon, orange, grapefruit, mandarin, kaffir lime), angelica root, orris root, cubeb berry, cassia bark, cardamom pod, liquorice root, grains of paradise, and the modern Australian botanical palette including Tasmanian pepperberry, lemon myrtle, finger lime, river mint, anise myrtle, bush tomato and many others — are held at moisture-controlled ambient (18 to 22 degrees Celsius and 45 to 55 percent RH) with very low air movement to preserve aroma. The store is a 304L stainless ambient room with 2 to 4 ACH at low velocity.

The second scope is the botanical milling and weighing bench. Several botanicals (juniper, orris root, angelica root, cassia, coriander) are milled or crushed to specific particle size before charge. The dust generated is both a respiratory allergen (juniper and orris are the worst offenders, with documented occupational asthma cases in commercial distilling) and a combustible particulate at fine particle sizes. The HVAC scope: local dust extract at the milling and weighing bench at 0.5 to 1.0 m/s face velocity through 304L stainless duct to a dedicated dust collector with cartridge filter, isolated explosion vent panel on the collector, conductive bonding throughout. Operator PPE includes P2 respirator during botanical milling.

The third scope is the vapour-infusion gin head. The gin head is a basket suspended above the spirit charge through which alcohol vapour passes during distillation, picking up botanical aromatics. The vapour space inside the gin head is Zone 0, the gin head exterior is Zone 1, the surrounding still room is Zone 2. The HVAC scope mirrors the pot still scope above. Some gin distilleries run both pot infusion (botanicals macerated directly in the spirit charge) and vapour infusion in the same still — Four Pillars Healesville, Archie Rose Rosebery, Manly Spirits, Brogan’s Way Richmond, Bass & Flinders Mornington Peninsula, Adelaide Hills Distillery Nairne, Ester Distilling Adelaide, Imbibers Tasmania, Mt. Uncle Walkamin. The HVAC dossier accounts for both modes.

21. Cider plant — apple and pear pressing, fermentation, packaging

Australian cider plants — Strongbow (Asahi), 5 Seeds (CUB-Asahi), Magners (Heineken AU), Bilpin Cider Co in the Blue Mountains, Daylesford Cider Co in Daylesford, Willie Smith’s Apple Cider in the Huon Valley, Drovers Hill in the Yarra Valley — share the brewery scope at the fermentation and packaging end, with a unique front end at the apple and pear pressing hall. Pressing generates wet aerosol, fruit sugar mist and a strong apple aroma. The HVAC scope: 6 to 10 ACH wet extract through 304L stainless to atmospheric stack with odour management at the site boundary per state EPA permit. Cider fermentation runs at 16 to 22 degrees Celsius with CO₂ evacuation identical to brewery scope — the CO₂ production per litre is similar to beer. Cider maturation tanks at 0 to 4 degrees Celsius for clear filtered cider or at warmer ambient for traditional bottle-conditioned styles. Packaging hall is identical to brewery packaging scope.

The orchard-attached cider operations (Bilpin, Willie Smith’s, Daylesford) often run a cellar door retail front and a kitchen on the same site, with hospitality HVAC scope layered on top of the production scope and clear separation between the two for cross-contamination control.

22. Non-alcoholic beverage manufacturing — carbonated soft drink, water, plant milk, cold brew coffee

Non-alcoholic beverage manufacturing simplifies the brewery HVAC scope by removing the four highest-stakes hazards: no fermentation CO₂ (from yeast metabolism), no ethanol vapour, no grain dust, no boil kettle latent load. Coca-Cola Europacific Partners (the merged operation that absorbed the former Coca-Cola Amatil), Asahi Beverages (Schweppes, Solo, Cottee’s, Pepsi under licence, Cool Ridge water), Frucor Suntory (V Energy from NZ, distributed AU), Nestlé Waters Australia (Pure Life), Bickford’s in Adelaide (soft drink and tonic), Saxbys in Tasmania, and Bundaberg Brewed Drinks (the Queensland ginger beer operation with global export reach) all share the packaging hall scope with a brewery.

The HVAC scope: sanitary 304L stainless duct in the wet zones, displacement ventilation 8 to 12 ACH, washdown-rated to IP65, sloped to drain, sanitary surface finish. The remaining hazards that drive HVAC:

• CO₂ in carbonation rooms. The carbonation CO₂ is purchased food-grade CO₂ rather than fermentation-derived, but the asphyxiation risk in a carbonation room is identical to a brewery cellar — 5,000 ppm TWA, 30,000 ppm STEL, oxygen displacement risk in CO₂ storage tank rooms. CO₂ sensors at slab and breathing height, alarm and lockout identical to brewery scope.
• Chlorine vapour at bottle wash. Bottle wash uses caustic plus hypochlorite at 100 to 200 ppm available chlorine. The local extract is 316L stainless, chlorine sensor alarming at 0.5 ppm STEL, discharge through dedicated stack.
• Peracetic acid at CIP. Identical to brewery CIP scope, 0.4 ppm STEL.
• Ozone in water disinfection. Ozone generators are used in bottled water sanitation (Nestlé Pure Life, the bottled water lines at Coca-Cola Europacific Partners). Ozone Safe Work Australia STEL is 0.2 ppm. The ozone generation room is single-pass extract through 316L stainless with continuous ozone sensing.
• Ammonia refrigeration on chilled-product lines. Large-scale carbonated soft drink and plant milk operations run ammonia secondary glycol for chilled product. AS/NZS 5149 machinery room scope identical to brewery.
• Steam boiler combustion. Bottle sterilisation, hot-fill juice and tea, and pasteurisation all use steam from a boiler under AS 4036 and AS 4037 with AS 1318 flue stack.
• Plant milk pasteurisation protein aerosol. Almond, oat, soy and coconut plant milk lines generate protein aerosol at the pasteuriser outlet that needs single-pass extract to avoid cross-contamination of subsequent packaging operations.
• Cold brew coffee. Cold brew is pre-roasted bean steeped at 4 to 8 degrees Celsius for 12 to 24 hours rather than hot-roasted on site, so the roasting fume HVAC scope is absent. The infusion room HVAC reduces to chilled ambient with modest extract.

Bundaberg Brewed Drinks deserves a separate note because their ginger beer process is genuinely brewed (active fermentation by yeast over several days) rather than blended — their plant runs to the full brewery HVAC scope including CO₂ evacuation and CIP exhaust, despite the finished product being non-alcoholic.

23. Tasting laboratory, sensory panel and QC laboratory

Every industrial Australian beverage operator runs a tasting laboratory and sensory panel facility for product release approval and quality control. The HVAC scope is climate-controlled (20 to 22 degrees Celsius, 50 percent RH), single-pass extract with no recirculation to avoid cross-contamination of aromatic samples, fume hood at the analytical bench for solvent extractions, low-VOC interior finishes to avoid aroma interference. Light levels and colour temperature are also controlled (typically 5,000 K daylight-balanced LED at 1,000 lux at bench level) but those are lighting design rather than HVAC scope.

The QC laboratory adjacent to the sensory panel runs analytical methods including HPLC, GC-MS, ICP, near-infrared spectroscopy, viscosity, density, turbidity, pH, dissolved oxygen, CO₂ measurement and microbiological plate counts. Fume hood at the wet bench for solvent handling, biosafety cabinet at the microbiology bench, dedicated sample preparation area with separate extract. The duct material is 316L stainless because solvent vapours and acid digestions are part of routine workflow.

24. Australian operator landscape — beer, wine, spirits, cider, non-alcoholic

The Australian beverage manufacturing industry is structured across distinct tiers and segments, and the HVAC scope at each tier reflects the throughput, the regulatory intensity and the audit cycle.

Industrial beer manufacturers

Carlton & United Breweries (CUB) — now owned by Asahi Beverages since the 2020 acquisition — is Australia’s largest brewer by volume, operating CUB Yatala in Queensland (Australia’s largest brewery by capacity), CUB Abbotsford in inner Melbourne (the historic CUB site), CUB Cascade in Tasmania, and the Pirate Life Brewing operation in Port Adelaide (acquired through subsequent transactions). Flagship brands include Victoria Bitter (VB), Carlton Draught, Crown Lager, Pure Blonde, Great Northern, Foster’s, Resch’s and Pilsen. The HVAC scope across CUB sites is industrial — full BRC and SQF compliance, third-party annual audit, multi-zone ammonia refrigeration, integrated CO₂ recovery, full BIER benchmarking participation.

Lion (owned by Kirin from Japan) is Australia’s second-largest brewer, headquartered in Sydney, operating XXXX at Milton Brisbane, Tooheys at Lidcombe Sydney, James Boag at Launceston Tasmania, James Squire (the Malt Shovel craft brand), Furphy at Geelong and Little Creatures at Fremantle (with the Geelong production facility). The same standards stack applies as CUB.

Coopers Brewery at Regency Park Adelaide is the largest family-owned independent Australian brewer, producing Coopers Pale Ale, Coopers Sparkling Ale, Coopers Stout, Coopers Vintage Ale and an expanding contract brewing operation. Coopers’ bottle conditioning means the HVAC scope includes warm storage zones for the in-pack secondary fermentation that no other Australian large brewer requires.

Asahi Premium Beverages beyond CUB operates Strongbow Cider, Asahi Super Dry (imported), Peroni Nastro Azzurro (imported, locally packaged) and Pirate Life.

Craft beer manufacturers

Australia has more than 1,000 craft breweries spread across every state and the territories. The scope reduces at craft scale but the hazards do not. The operators we see most often in project specifications include: Stone & Wood at Byron Bay (Lion-acquired but operationally distinct), Mountain Goat at Richmond Melbourne (Asahi-owned), Little Creatures at Fremantle and Geelong (Lion), Matilda Bay (Foster’s legacy), Bridge Road Brewers at Beechworth Victoria, Boatrocker Brewers + Distillers at Braeside Melbourne (notable as both brewer and distiller on the same site), 4 Pines Brewing at Manly NSW (AB InBev-acquired), Modus Operandi at Mona Vale NSW, Capital Brewing at Canberra, Akasha Brewing at Five Dock Sydney, BentSpoke Brewing at Canberra, Young Henrys at Newtown Sydney, Black Hops Brewing at Burleigh Heads Queensland, Hawkers Beer at Reservoir Melbourne, Tallboy and Moose at Preston Melbourne, Moo Brew at Hobart Tasmania, Two Birds Brewing at Spotswood Melbourne, Holgate Brewhouse at Woodend Victoria, Sailors Grave Brewing at Orbost Victoria, Pirate Life at Port Adelaide (now AB InBev/CUB-Asahi), Hop Nation at Footscray, Co-Conspirators, Bracket, KAIJU and many others.

Industrial wine manufacturers

Treasury Wine Estates (ASX:TWE) is the largest Australian wine business by value and one of the world’s largest wine companies. The Treasury portfolio includes Penfolds (the icon, with Grange as flagship), Wynns Coonawarra Estate (Cabernet Sauvignon on terra rossa over limestone), Wolf Blass (Barossa), Lindeman’s (Hunter origin, multi-region production), Pepperjack, Devil’s Lair, Coldstream Hills (Yarra Valley), Heemskerk (Tasmania), Saltram (Barossa) and Yellowglen (sparkling).

Pernod Ricard Australia (the Australian arm of the French Pernod Ricard group) operates Jacob’s Creek, Wyndham Estate, Stoneleigh (NZ but managed AU), Brancott Estate (NZ).

Accolade Wines (private equity Carlyle ownership) produces Hardys, Banrock Station, Houghton, St Hallett, Stonier, Bay of Fires, Petaluma, Mud House and Tatachilla.

Casella Family Brands in the Riverina NSW produces Yellow Tail, Australia’s largest single-brand wine exporter by volume, alongside Peter Lehmann and Brand’s Laira (recently acquired). McWilliam’s Wines (Riverina and Hunter Valley) was recently sold and reorganised.

De Bortoli Wines operates across the Riverina, Yarra Valley and King Valley.

Brown Brothers at Milawa King Valley Victoria is fourth-generation family-owned. Yalumba at Angaston in the Barossa is the oldest continuously family-owned Australian winery (Hill-Smith family). Henschke in the Eden Valley produces Hill of Grace and Mount Edelstone — two of Australia’s most acclaimed single-vineyard wines. Penley Estate at Coonawarra. Tyrrell’s Wines in the Hunter Valley (Vat 47 Chardonnay, Vat 1 Semillon). Brokenwood Wines Hunter Valley. Tahbilk at Nagambie Lakes Victoria is the oldest family-owned still-operating winery in Australia. Mount Mary in the Yarra Valley. Giaconda at Beechworth Victoria. Vasse Felix, Cape Mentelle (LVMH), Cullen Wines, Howard Park Wines, Robert Oatley Vineyards in Margaret River. Cloudy Bay at Marlborough NZ (Moët / LVMH, distributed AU).

Whisky, rum and gin distillers

Lark Distillery in Hobart Tasmania is the pioneer Australian malt whisky distillery, operating original Hobart and the larger Pontville production facility. Sullivans Cove in Cambridge Tasmania holds the 2014 World’s Best Single Malt award. Hellyers Road Distillery in Burnie Tasmania. Overeem in Hobart. The Tasmanian Distillery Association coordinates the Tasmanian whisky cluster.

Bundaberg Distilling Co in Bundaberg Queensland is Australia’s largest distillery by volume, producing Bundaberg Rum at industrial scale under Diageo ownership. Beenleigh Distillery in Beenleigh Queensland also produces rum. Manly Spirits at Brookvale NSW produces gin and aquavit with a coastal-botanical signature. Four Pillars Distillery at Healesville Victoria (Lion 50 percent acquisition in 2019) produces gin at production scale. Archie Rose Distilling at Rosebery Sydney pioneered Australian craft gin and now runs whisky maturation. Australian Distilling Co in Brisbane. Brogan’s Way Distillery in Richmond Melbourne. Ester Distilling in Adelaide. Adelaide Hills Distillery at Nairne. Imbibers Spirits in Tasmania. Bass & Flinders Distillery on the Mornington Peninsula. Black Gate Distillery at Mendooran NSW (rum and whisky). Mt. Uncle Distillery at Walkamin Queensland.

Cider manufacturers

Strongbow (Asahi), 5 Seeds (CUB-Asahi), Magners (Heineken AU local production), Bilpin Cider Co in the Blue Mountains NSW, Daylesford Cider Co at Daylesford Victoria, Willie Smith’s Apple Cider in the Huon Valley Tasmania, Drovers Hill Cider in the Yarra Valley Victoria.

Non-alcoholic beverage manufacturers

Coca-Cola Europacific Partners (CCEP) — the European-led merged operation that acquired the former Coca-Cola Amatil (CCA) — is the largest non-alcoholic beverage manufacturer in Australia, with multiple bottling sites. Asahi Beverages beyond CUB operates Schweppes, Solo, Cottee’s, Pepsi (under licence). Frucor Suntory imports and packages V Energy from NZ. Nestlé Waters Australia produces Pure Life bottled water. Bickford’s in Adelaide manufactures soft drink, tonic and mixers. Saxbys in Tasmania produces premium soft drink. Bundaberg Brewed Drinks in Bundaberg Queensland produces brewed ginger beer with a global export footprint.

Industry bodies

The Brewers Association of Australia (BAA), the Independent Brewers Association (IBA), the Wine Australia Corporation (under the Wine Australia Act 2013), the Distilled Spirits Industry Council of Australia (DSICA), the Australian Wine Industry Technical Conference (AWITC), Cider Australia, the Australian Beverages Council, the Australian Made Campaign and the Beverage Industry Environmental Roundtable (BIER) provide the policy, compliance and benchmarking framework across the industry.

25. Standards stack — the full Australian beverage manufacturing HVAC reference

The standards reference set for industrial Australian beverage manufacturing HVAC is layered. Project specifications walk through all of them.

• AS 1668.2 — Mechanical ventilation in buildings. Minimum outdoor air, exhaust by occupancy and process, commissioning protocols.
• AS 4254 — Ductwork construction. Pressure classes, leakage classes, sealing and joining. The reference for fabrication tolerances and seal class.
• AS 1530.4 — Fire test methods for building elements. Drives fire-rated penetration, smoke and fire damper integration.
• AS/NZS 1677 — Refrigerating systems. Foundational refrigeration safety standard, ammonia and other refrigerants.
• AS/NZS 5149 series — The ISO 5149-aligned refrigeration safety standard now superseding AS/NZS 1677 for new installations. .1 definitions, .2 design and construction, .3 installation, .4 operation and maintenance. Critical for ammonia machinery room scope.
• AS/NZS 60079.10.1 — Hazardous area classification for explosive gas atmospheres. Ethanol vapour zoning around stills, spirit storage, dilution, bottling and ageing warehouses.
• AS/NZS 60079.10.2 — Hazardous area classification for explosive dust atmospheres. Grain dust, malt dust, sugar dust, botanical dust zoning.
• AS/NZS 60079.14 — Electrical installations in hazardous areas. Downstream wiring and conductive bonding for HVAC equipment in classified zones.
• AS 1940 — Storage and handling of flammable and combustible liquids. Bulk ethanol storage, spirit dilution and bottling, finished spirit dispatch.
• AS 3957 — Combustible dust standard for the Australian framework. Grain and malt dust hazard analysis.
• NFPA 660 — The international combustible dust standard (which now consolidates the former NFPA 484 and NFPA 654 references). Most Australian project specifications import NFPA 660 where the local Australian standard is silent.
• NFPA 68 — Explosion venting. Calculates vent panel area on chamber volume, Kst, Pmax and reduced pressure target.
• NFPA 69 — Explosion prevention systems. Inerting, suppression, isolation.
• AS 4036 — Boiler design (mash kettle, lauter, brewing copper and steam boiler at 1+ bar).
• AS 4037 — Pressure equipment inspection and certification.
• AS 1318 — Industrial chimney height and dispersion modelling. Flue stack, distillery still vent stack, RTO stack.
• AS 1851 — Fire damper and fire-rated penetration inspection regime.
• ASHRAE Applications Handbook Chapter 22 — Refrigerated processing.
• ASHRAE Applications Handbook Chapter 35 — Industrial drying.
• FSANZ Food Standards Code Chapter 1.2.2 — Food labelling.
• FSANZ Food Standards Code Chapter 3.2.3 — Food premises and equipment.
• ISO 22000 — Food safety management systems.
• HACCP — Hazard Analysis and Critical Control Points methodology.
• Excise Act 1901 and Excise (Drawback) Regulations — Australian Taxation Office (ATO) excise framework for alcohol production.
• Wine Australia Act 2013 — Wine Australia Corporation labelling and export framework.
• State EPA permits — EPA Victoria, NSW EPA, EPA SA, EPA WA, EPA Tasmania, EPA Queensland air, odour and noise permit conditions.
• BRC, IFS, SQF — Global Food Safety Initiative recognised schemes. Audit-driven, all reference cleanable HVAC.
• USDA HACCP, FDA Food Code, TTB — For US export channels.
• Codex Alimentarius — International hygiene framework underpinning all of the above.
• BIER — Beverage Industry Environmental Roundtable benchmarking on water, energy and emissions.

26. SBKJ machinery configuration for industrial beverage HVAC fabrication

Fabricating the duct schedule for an industrial-scale Australian brewery, winery, distillery or non-alcoholic beverage plant touches the full SBKJ product line. The configuration we recommend, by zone and by application:

SBAL-V auto duct line in 304L stainless variant. The SBAL-V is the workhorse of the SBKJ catalogue and the 304L stainless variant is mandatory for every food-grade duct application in a beverage plant. Hardened tooling, dedicated stainless coil decoiler, adjusted forming pressures for the work-hardening characteristics of stainless. Output rectangular duct 200 mm to 1,500 mm width, lengths up to 1,500 mm or 2,000 mm, integrated TDF flange forming. Used for: fermentation cellar supply and return, lagering cellar, ale conditioning, wine tank hall supply, barrel cellar conditioning, brewing copper vapour stack, mash and lauter hood, packaging hall displacement supply, cellar door comfort cooling, sensory panel single-pass exhaust, non-alcoholic packaging hall, plant milk pasteuriser extract, cold brew coffee infusion room. The same SBAL-V configuration also produces 316L stainless duct for the chloride-loaded sub-zones (coastal sites, HF-acid etching, chlorine sanitation, peracetic CIP, long-duration spirit warehouse).

SBAL-V galvanised variant. For office, dry store, dispatch, non-process zones outside food contact, and the barrel cellar return where stainless cost is not justified.

SB-ZF1500 stitchwelder. The stitchwelder is the critical machine for any welded-seam plenum where the duct must hold positive or negative pressure with no leakage, no seam corrosion path and no biofilm trap. Applications: stainless ammonia evaporator coil plenum (the lagering cellar evaporator coil housing, the wine tank-jacket evaporator, the spirit dilution chiller evaporator), CO₂ recovery stack collection header (the welded plenum that gathers blow-off gas from a row of CCTs at slight positive pressure), distillery still extract plenum (the inlet plenum to the ATEX-classified extract fan handling ethanol vapour), spirit ageing warehouse extract plenum (the ridge-level extract collection from a multi-thousand-cask warehouse, where unwelded lap seams pinhole within 18 months under cycling condensate exposure), RTO inlet plenum on the modern climate-controlled rack warehouse, carbon filter housing plenum on the alternative polish system, spirit bottling room local extract plenum (Zone 1), gin botanical store dust extract plenum, sugar handling dust extract plenum. SB-ZF1500 produces seam-welded duct in 304L, 316L and high-temperature stainless to the lengths and gauges required.

SBSF-1525. The SBSF-1525 is the round duct flange former for spiral and round duct connections. Used wherever the duct schedule includes round 304L stainless: long horizontal supply runs through warehouse-scale facilities, return air risers, cellar door comfort cooling distribution, packaging hall return.

SBFB-1500 spiral. The SBFB-1500 spiral tubeformer produces round spiral duct 80 mm to 1,500 mm diameter in galvanised or 304L stainless coil. Multi-storey return riser, plant room return, long horizontal supply runs typical of warehouse-scale beverage plants. Spiral is significantly stiffer per unit weight than rectangular duct, which matters for the long unsupported runs through a CUB- or Lion-scale brewery, a Treasury Wine Estates packaging hall or a Bundaberg Distilling Co rum warehouse.

SBPC1500 plasma cutter. The SBPC1500 cuts stainless and carbon steel duct components, flange blanks, access doors, vent panels and damper bodies. Critical for fabricating the explosion vent panels at the malt mill, the sugar handling and the gin botanical store, and for cutting the access cover on every change of direction in the cellar exhaust.

SBLR-600 longitudinal seam welder. The SBLR-600 produces the longitudinal seam on round and oval duct components, complementing the SB-ZF1500 stitchwelder for the welded-seam plenum scope.

Spark-resistant fan impellers (aluminium bronze or matched alloy) and IECEx Ex-d motor specifications are mandatory throughout the distillery still extract, the spirit ageing warehouse extract, the malt mill dust extract, the sugar handling dust extract, the gin botanical milling extract, the ammonia machinery room extract, the CO₂ recovery skid extract, and any zone where ethanol vapour or grain or sugar or botanical dust is present. SBKJ supplies the fabricated duct schedule and connects directly to the spark-resistant fan and IECEx motor manufacturers we recommend — the duct fabrication and the rotating equipment are integrated at the FAT stage to verify conductive bonding, leakage class and damper actuator certification.

27. The duct material decision matrix for an industrial beverage manufacturing project

The single highest-leverage capital decision on any industrial beverage manufacturing HVAC project is the zone-by-zone material schedule. Get it right at design stage and the duct lasts 25 to 30 years with annual cleaning. Get it wrong and the duct fails within 18 months and a full replacement is required. The pattern by zone:

• 304L stainless TIG-welded: all wet process zones, all CIP-served zones, all fermentation and lagering, wine tank hall, barrel cellar, brewing copper vapour stack, mash and lauter hood, CO₂ recovery skid plenum, distillery still extract, spirit ageing warehouse extract, gin botanical store and infusion head extract, cider fermentation, non-alcoholic packaging hall, plant milk pasteurisation, ammonia evaporator coil plenum, ammonia machinery room exhaust.
• 316L stainless TIG-welded: coastal sites within 5 km of saltwater, HF-acid etching for sanitary surface preparation, chloride-loaded water sanitation, peracetic-heavy CIP regimes, long-duration spirit ageing warehouse extract (over 10 years), bottle wash chlorine exhaust, ozone disinfection room, sensory panel/QC lab solvent extract.
• Polypropylene-lined or PFA: dedicated CIP caustic and acid exhaust legs where 316L would still see accelerated pitting at high acid concentration.
• 304 stainless TIG-welded: ambient packaging halls, dispatch chilling, kitchen and food prep behind cellar door.
• AS 4254 G90 galvanised: offices, dry warehouse, non-food zones, non-refrigerated dispatch, comfort cooling in tap room and cellar door retail front, worker amenity.
• Refractory-lined carbon steel: steam boiler flue above 250 degrees Celsius, RTO outlet stack on spirit ageing warehouse polish system, malt kiln flue (rare in Australia but present at the on-site malting craft distilleries).
• Spark-resistant aluminium bronze: rare component-level use inside Zone 1 distillery enclosures where conductive carbon steel or stainless is not adequate for the bonding scheme.

28. FAT, SAT, commissioning and the 12-month re-validation cycle

SBKJ Factory Acceptance Test (FAT) on every machine supplied for an industrial beverage manufacturing project includes: dimensional verification against drawings, weld inspection at every linear metre with visual and dye-penetrant test on welded seams, internal surface roughness measured at Ra 0.8 micrometre or better using a portable surface gauge, leakage test at 1.5 times design pressure with smoke detection on Class B and Class C seal applications, drainability check, conductive bonding verification across every flange in classified zones, witnessed by the customer’s nominated representative (typically the food safety officer or the project mechanical engineer) before bill of lading.

Site Acceptance Test (SAT) post-installation: airflow balance within 10 percent of design across every zone per AS/NZS 4254, room pressure differentials verified across every cascade with hand-held manometer and BMS confirmation, temperature and humidity stability mapped over a 7-day cycle at fermentation, lagering, wine tank hall, barrel cellar, distillery still room, spirit ageing warehouse, ammonia machinery room and tasting/sensory zone, ethanol gas detection commissioning and calibration witnessed by safe-work inspector and intermediate inspector, CO₂ sensor commissioning and calibration in every cellar, ammonia detection commissioning, explosion vent panel installation witness by fire engineer and panel certificate filed, dust hazard analysis sign-off, hazardous area dossier sign-off, conductive bonding verified to less than 1 megohm in every classified zone, fire damper certificate filed under AS 1851.

Commissioning documentation pack handed to the operator: IQ, OQ, PQ reports, mill certificates for every stainless coil used, weld procedure specifications and welder qualifications, FAT records, leak test records, mapping reports, ethanol/CO₂/ammonia/oxygen/dust detector calibration certificates, explosion vent panel certificates, fire damper certificates, fire engineer sign-off, food safety officer sign-off, ISO 22000 audit pack, HACCP plan, state alcohol licensing authority filings under the Excise Act 1901, Wine Australia Act 2013 filings, DSICA member compliance documentation, state EPA permit conditions including any odour or VOC emission limit, ammonia detector annual calibration schedule.

Annual re-validation: re-mapping on fermentation, lagering, ale conditioning, wine tank hall and barrel cellar, annual gas detector calibration across ethanol, CO₂, ammonia and oxygen sensors, annual fire damper drop test under AS 1851, annual hazardous area dossier re-validation, annual conductive bonding test, annual third-party hygienic surface audit on premium operators (the BRC and SQF audit cycle drives this), annual ISO 22000 re-certification audit, annual state safe-work boiler inspection under AS 4037, annual EPA permit emissions reporting.

29. Sustainability — heat recovery, CO₂ capture, water, BIER benchmarking

The four highest-return sustainability interventions on an industrial Australian beverage manufacturing plant:

Boil heat recovery. Vapour condenser on the brewing copper recovers 60 to 80 percent of the 200 to 400 kW per hour of latent load into hot-liquor tank pre-heat or wort pre-heater feed. Payback 2 to 4 years at 50,000+ hL/year throughput. Lion, CUB and Coopers all run vapour condensers. An increasing share of the larger craft producers (BentSpoke, Stone & Wood, Pirate Life, Boatrocker, Capital, Black Hops) now install them in expansions.

Fermentation CO₂ capture. Captures the 700 to 900 kg per primary fermentation per 100 hL fermenter at industrial scale. Recovered CO₂ substitutes for purchased food-grade CO₂ in carbonation and counter-pressure filling, with sale to the merchant gas market as additional revenue. Payback 3 to 5 years above 50,000 hL/year. CUB has run recovery for decades; Coopers, Lion and the larger craft producers are following.

Ammonia compressor heat recovery. The condenser heat rejection from the ammonia primary refrigeration drives a heat-recovery loop into the brewery hot-water system at 65 to 80 degrees Celsius, displacing natural gas combustion in the boiler for hot water service. Payback 3 to 5 years at industrial scale.

Spirit warehouse RTO with heat recovery. On modern climate-controlled spirit ageing warehouses fitted with regenerative thermal oxidiser polish, the thermal mass in the ceramic bed is recoverable into the warehouse heating load, the dilution water heating, or the bottling rinse heating. Payback variable by site but generally 5 to 8 years.

Water conservation is parallel — CIP optimisation, wort cooling water re-use, packaging lubricant water-free systems — but mostly outside the HVAC scope. The BIER framework benchmarks water use ratio (litres water per litre of product), energy use ratio (megajoules per litre), Scope 1, 2 and 3 emissions and a range of operational indicators. Australian operators participating in BIER include the multinationals (CUB-Asahi, Lion-Kirin, Treasury Wine Estates, Coca-Cola Europacific Partners) and an increasing share of the family-owned and mid-tier independents.

30. Lead time, support and Australian commissioning from Box Hill North VIC

For an industrial Australian beverage manufacturing project specifying SBKJ machinery for in-house duct fabrication or supplying SBKJ-fabricated duct to the project:

• Quotation and engineering — 1 to 3 weeks. SBKJ engineers size the line to the buyer’s coil specification (304L, 316L, galvanised), output target, footprint constraint and any ATEX or food-grade tooling configuration.
• Build-to-order — 12 to 16 weeks for SBAL-V 304L stainless variant, 10 to 14 weeks for galvanised, 12 to 18 weeks for the SB-ZF1500 stitchwelder. Spark-resistant tooling and IECEx-certified equipment configuration extends the upper end of the range by 2 to 4 weeks.
• Factory Acceptance Test (FAT) — 1 week, mandatory on every SBKJ machine, witnessed by the buyer.
• Main carriage to Australia — 2 to 4 weeks to Melbourne, Sydney, Brisbane, Adelaide, Fremantle or Hobart. CIF or FOB Melbourne supported. Additional handling for hazardous-zone tooling on dedicated freight.
• Customs and inland trucking — 1 to 2 weeks. SBKJ supplies all export documentation including HS code declaration (8462.49 or 8479.89), CE certificate, ISO 9001 certificate, FAT signed report and ISPM-15 fumigation certificate for crating.
• Installation, commissioning and training — 2 to 6 weeks on site, depending on scope. SBKJ engineers from the Box Hill North VIC office handle Australian commissioning and operator training in English on site.

Total project handover is typically 5 to 7 months from purchase order. After-sales support is 72-hour response via email or video call from Box Hill North VIC, with parts continuity guaranteed for at least 10 years from delivery. Refer to the SBKJ machines catalogue, the SBAL-V product specification, and the contact page for project enquiries.

How SBKJ supports industrial beverage manufacturing projects in Australia

We have supplied duct production machinery into beverage facilities ranging from large-scale industrial brewery expansions through wine packaging hall builds at Treasury and Pernod Ricard Australia tier, through gin and whisky distillery start-ups across Tasmania, Victoria, NSW and Western Australia, to non-alcoholic beverage plant retrofits at Coca-Cola Europacific Partners and Asahi Beverages tier. The pattern: the engineering scope is well understood — standards stack, hazard analysis methodology, material decision tree — but the integration is where projects succeed or fail. The four highest-leverage decisions on any industrial beverage manufacturing HVAC project:

1. Get the zone material schedule right at design stage. Drawing the boundary between 304L food-zone, 316L chloride-loaded sub-zone, polypropylene-lined CIP exhaust, refractory-lined boiler flue and galvanised non-process is the largest single capital decision in the duct scope. Get it right at design stage, not after the BRC or SQF auditor flags it on inspection or a state safe-work inspector issues an improvement notice.
2. Document the hazardous area dossier and dust hazard analysis early. The AS/NZS 60079.10.1 gas dossier and the AS/NZS 60079.10.2 / AS 3957 / NFPA 660 dust analysis dictate equipment selection across HVAC, electrical, process, fire and emergency response. Late changes to ATEX zoning ripple through every package on the project — budget and schedule alike.
3. Size CO₂, ethanol and ammonia detection and evacuation for the worst-case batch concurrency. Average production is not the design case. Twelve fermenters in active primary on the same Tuesday, three stills running stripping plus spirit run, two ammonia chillers under full-load and a CIP cycle running concurrent — that is the design case. Best-practice operators design for that day and accept the over-capacity on the average day.
4. Specify FAT on every machine and every duct package. Compromised FAT correlates strongly with post-installation disputes and operational outages. The cost of a thorough FAT is one week of buyer-witnessed inspection. The cost of skipping it is a rework cycle measured in months and a state safe-work notice that delays commissioning.

Get an itemised SBKJ quote for your brewery, winery, distillery or non-alcoholic beverage project →

FAQ

Why is 304L stainless steel mandatory for brewery, winery and distillery ductwork in industrial-scale beverage manufacturing?

Industrial beverage manufacturing combines wet condensate, caustic and acid CIP cycles, peracetic acid and chlorine sanitiser sprays, and ethanol and CO₂ vapour at slightly acidic pH. Galvanised G90 sheet corrodes through within 12 to 24 months under any one of these and within 6 months under combined exposure. 304L stainless (1.4307) with full TIG-welded seams ground to Ra 0.8 micrometre or better is the SBKJ baseline for every wet zone in a beverage plant. 316L stainless (1.4404) with 2 to 3 percent molybdenum upgrades coastal sites, HF-acid etching, chloride-heavy water sanitation and very long-duration spirit warehouse maturation. Galvanised remains acceptable in offices, dry stores and detached non-process zones only.

What hazardous area zoning applies inside a working gin or whisky still room under AS/NZS 60079?

Ethanol vapour above and around a working pot or column still is a classified hazardous atmosphere under AS/NZS 60079.10.1. The Lower Explosive Limit is 3.3 percent by volume (33,000 ppm); the Workplace Exposure Standard is 1,000 ppm 8-hour TWA. Typical zoning: Zone 0 inside vessels, Zone 1 at the spirit safe sample tap, receiver vents and condenser exit, Zone 2 in the surrounding still room, non-classified outside the radius. Every motor, damper, instrument and fan inside the zone carries IECEx Ex-d, Ex-e or Ex-ia marking. Ductwork is conductive 304L stainless or carbon steel bonded and earthed to less than 1 megohm. Final classification must come from a documented dossier authored by a competent person.

How do I size CO₂ extraction in a CCT cellar and how does CO₂ recovery change the duct schedule?

Active primary fermentation generates approximately 4 grams of CO₂ per gram of ethanol. A 100 hL CCT produces 700 to 900 kg over a 4-to-5-day primary. CO₂ pools at floor level (1.5 times denser than air). Low-level extract at 200 to 400 mm above slab, 6 to 12 ACH for worst-case batch concurrency, fixed CO₂ sensors at slab and breathing height, alarm at 5,000 ppm and forced lockout at 15,000 ppm, exhaust on emergency power, oxygen sensors alarming at 19.5 percent. CO₂ recovery pipes each CCT through a dedicated 304L stainless collection header to a recovery skid (foam separator, water scrubber, carbon polish, compression, drying, liquefaction); recovery skid classified Zone 2 because ethanol carry-over is flammable.

What HVAC scope is required for a spirit ageing warehouse and how is the angels share managed?

A 1,000-cask warehouse loses 100 to 200 kL of pure ethanol vapour over 10 years. Traditional dunnage warehouses are deliberately unconditioned but still need engineered ventilation: low-level passive louvres on prevailing-wind elevations, dedicated mechanical extract from ridge level in 304L stainless with IECEx Ex-d fans, continuous ethanol detection alarming at 25 percent of LEL, no electrical equipment in the zone unless Ex-rated, AS 1940 spill containment, intrinsically safe fire detection. Modern climate-controlled rack warehouses route extract through an activated carbon polish or RTO to capture or destroy ethanol vapour for VOC and community amenity compliance.

What standards govern HVAC ductwork in an Australian large-scale brewery, winery, distillery or beverage plant?

AS 1668.2 (mechanical ventilation), AS 4254 (duct construction), AS 1530.4 (fire test), AS/NZS 1677 and AS/NZS 5149 (ammonia refrigeration), AS/NZS 60079.10.1 and .10.2 (hazardous areas gas and dust), AS/NZS 60079.14 (electrical installation in classified areas), AS 1940 (flammable liquid), AS 3957 and NFPA 660 (combustible dust), NFPA 68 and NFPA 69 (explosion venting and prevention), AS 4036/AS 4037 (boiler), AS 1318 (chimney), AS 1851 (fire damper), ASHRAE Applications Ch 22 and Ch 35, FSANZ Code 1.2.2 and 3.2.3, ISO 22000, HACCP. Sector-specific: Excise Act 1901, Wine Australia Act 2013, DSICA, BAA, IBA, BIER.

What is the difference in HVAC scope between an industrial brewery (CUB Yatala, Lion XXXX) and a craft brewery?

At industrial scale the brewery runs as continuous-process plant with vapour condensers on every kettle, fermentation CO₂ recovery, multi-zone ammonia refrigeration, full BRC and SQF compliance, dedicated ATEX-classified ethanol-vapour management and HVAC scope sized to over 1 million hL/year throughput. At craft scale the same hazards apply at proportionally smaller scale; the most common engineering mistake is under-specified CO₂ evacuation, undersized vapour hood and galvanised duct used in the cellar because budget would not stretch to stainless. The hazard is identical; only the scale is different.

How does a gin distillery's botanical store and vapour-infusion still differ from a whisky pot still?

A gin distillery adds botanical store and vapour-infusion gin head scope on top of basic distillation. The botanical store holds juniper, coriander, citrus peel, angelica, orris, cubeb, cassia at 18 to 22 degrees Celsius and 45 to 55 percent RH with very low velocity to preserve aromatics. Botanical dust at milling and weighing is both respiratory allergen (juniper and orris are worst) and combustible dust at fine particle sizes. The vapour-infusion gin head is Zone 1 identical to the still vapour space. Local dust extract at the milling bench in 304L stainless, dedicated dust collector with isolated vent panel.

What HVAC differences apply to a non-alcoholic beverage plant versus a brewery?

Non-alcoholic beverage manufacturing removes fermentation CO₂, ethanol vapour, grain dust and boil kettle latent load. Remaining hazards: CO₂ in carbonation rooms (asphyxiation risk identical to brewery cellar), chlorine at bottle wash, peracetic at CIP, ozone in water disinfection, ammonia refrigeration on chilled product, steam boiler combustion, plant milk protein aerosol. Duct schedule: 304L stainless in wet process and packaging, galvanised in dry warehouse and dispatch. Bundaberg Brewed Drinks is the exception — their ginger beer is actually brewed with active fermentation, so the full brewery HVAC scope applies.

Why does the malt mill in a brewery require NFPA 660 explosion venting?

Barley malt dust Kst is 100 to 200 bar.metre/second (St 1 to St 2), with MIE 30 to 100 mJ and MIT around 400 to 450 degrees Celsius. NFPA 660 (consolidating the former NFPA 484) and AS 3957 require: dust hazard analysis identifying every enclosed dust volume, NFPA 68 explosion vent area sized on chamber volume and Kst, NFPA 69 prevention through inerting or suppression where venting is impractical, spark detection at the mill outlet with water spray within 30 milliseconds, rotary airlock isolation. Duct conductive 304L stainless or carbon steel bonded and earthed to less than 1 megohm. All electrical IECEx Ex-tD. Scale of brewery does not change the analysis — only the vent panel size.