The compressed air foam system is supplied by the customer or a manufacturer the customer nominates, and its design, performance and acceptance rest with that supplier. ETENZ supplies the enclosure together with in-cabin ventilation, lighting and auxiliary power distribution, and can also set the unit in place and connect its in-cabin interfaces at the factory.
ISO 14001
ISO 45001
ISO 9001
CAFS Enclosure for Compressed Air Foam Systems
For CAFS manufacturers and integrators on substation projects: a factory-built equipment enclosure delivered in one piece, bare shell to OEM/ODM.
Industrial Equipment EnclosureCustom Equipment Integration Unit
Key Metrics
5.5–12.5m
Length
25years
Design life
IP54·55
Protection
C3-C5
Corrosion class
Product Features
Four enclosure types
Large (11.5–12.5 m long), medium (8.3–8.5 m) and small (5.5 m) main-equipment enclosures, plus a fire-fighting robot enclosure, chosen by unit size and the space on site.
Four enclosure types
Large (11.5–12.5 m long), medium (8.3–8.5 m) and small (5.5 m) main-equipment enclosures, plus a fire-fighting robot enclosure, chosen by unit size and the space on site.
Drawing-based layout
Door openings, equipment supports and penetrations are positioned from the unit layout drawing, so the unit drops into prepared positions with less cutting and rework on site.
Compressor ducting
Hot air from the compressor leaves through a dedicated duct straight to the outside instead of building up inside the enclosure.
Heavy-duty base
Heavy components of the unit sit directly on support points in the structural-steel base frame, located to suit the unit.
Outdoor durability
50 mm rock-wool insulation, IP54/55 protection and C3–C5 anti-corrosion coating, built to a 25-year design life.
One-piece transport
Enclosure and fit-out are completed in the factory and shipped as one cabin, with lifting points designed into the structure and a dedicated lifting frame available.
Product Details
Schematic plan and side elevation: service doors sit beside the equipment they serve, with dimension lines for length, width and height.
Large enclosures run 11.5–12.5 m long and medium ones 8.3–8.5 m, 3.0–3.7 m wide and 3.5–3.8 m high, housing the main equipment of the foam system. The interior is zoned around the system's components, with service doors placed beside the compressor and other parts that need routine maintenance; door count, size and swing follow the system layout drawing. Length, width and clear height are all derived from the equipment envelope and service clearances.
Schematic plan and side elevation: service doors sit beside the equipment they serve, with dimension lines for length, width and height.
5500 × 3000 × 2800 mm overall, for compact CAFS units where a small footprint is needed. Double doors at the end let the unit move in and out in one piece and open it up for service; the side has a further service door and ventilation louvers, and openings are positioned to the unit's connections.
The compressor has its own internal duct, and its hot air leaves through an external duct on the enclosure wall. The air intake and the duct outlet both carry motorized louvers that open with the system and close when it stops, reducing the wind-blown sand, rain and snow that gets inside. Duct routing and louver size and number follow the compressor model and layout; the rest of the enclosure is ventilated or air-conditioned to its heat load.
The base frame is a welded structural-steel assembly with support points set to the weight and footprint of each piece of equipment, and the floor is typically checker plate. For cold sites the base can take a polyurethane insulation layer and a 1.5 mm galvanized bottom plate to limit floor condensation. When the equipment layout changes, extra support points can be added on site and the coating touched up.
Before shipment the enclosure is checked against the customer's system drawings and 3D model for structural orientation, both end walls, door openings and penetrations, then against its overall dimensions. Locks, seals and coating are inspected before dispatch, and the inspection record ships with the enclosure.
Delivery Scope Options
Scope 1
Bare-Shell Supply (Interfaces Reserved)
Scope 1Bare-Shell Supply (Interfaces Reserved)
The enclosure is built to the CAFS drawings, with door openings, duct openings, equipment supports and penetrations reserved in one go, and delivered to the CAFS manufacturer's factory for unit installation.
Scope Includes:
Enclosure and base frame
Service doors and double end doors
Insulation and floor
Duct and louver openings
Equipment supports and penetrations
Technical Specifications
Overall dimensions (large enclosure)
L 11500–12500 × W 3400 × H 3700–3800 (to system layout)
mm
Overall dimensions (medium enclosure)
L 8300–8500 × W 3000–3700 × H 3520–3700 (to system layout)
mm
Overall dimensions (small enclosure)
L 5500 × W 3000 × H 2800
mm
Overall dimensions (robot enclosure)
L 7200 × W 3700 × H 3500
mm
Structure
Welded steel; channel / square-tube frame and base (sections sized to load)
Walls and roof
2.0 mm galvanized roof sheet, 1.6–2.0 mm corrugated wall panels, 50 mm rock-wool insulation
Floor
Typically checker plate; optional polyurethane insulation and 1.5 mm galvanized bottom plate
Doors and louvers
Side service doors, double end doors, ventilation louvers (motorized optional); number and size to system layout
Ventilation and climate
Compressor internal and external ducting; rest of enclosure ventilated or air-conditioned to heat load
Electrical interfaces
Cable entry, lighting, auxiliary power distribution and signal interfaces (reserved or integrated)
IEC 60364
Piping and penetrations
Foam discharge, water supply, drainage and air openings reserved to system interfaces
Ingress protection
IP54 / IP55 (confirmed against ventilation openings and sealing)
IEC 60529
Corrosion class
C3–C5 (to site environment)
ISO 12944
Colour and marking
Colour, nameplates and safety signs to customer requirements
Transport and lifting
Shipped in one piece; lifting points designed into the structure, lifting frame available
Design life
25
years
Factory inspection
Structure, penetrations and overall dimensions checked against system drawings and 3D model; inspection record supplied
Warranty
12 (extendable to 24 by project)
months
Management systems
ISO 9001 / 14001 / 45001
| Parameter | Specification |
|---|---|
| Overall dimensions (large enclosure) | L 11500–12500 × W 3400 × H 3700–3800 (to system layout) mm |
| Overall dimensions (medium enclosure) | L 8300–8500 × W 3000–3700 × H 3520–3700 (to system layout) mm |
| Overall dimensions (small enclosure) | L 5500 × W 3000 × H 2800 mm |
| Overall dimensions (robot enclosure) | L 7200 × W 3700 × H 3500 mm |
| Structure | Welded steel; channel / square-tube frame and base (sections sized to load) |
| Walls and roof | 2.0 mm galvanized roof sheet, 1.6–2.0 mm corrugated wall panels, 50 mm rock-wool insulation |
| Floor | Typically checker plate; optional polyurethane insulation and 1.5 mm galvanized bottom plate |
| Doors and louvers | Side service doors, double end doors, ventilation louvers (motorized optional); number and size to system layout |
| Ventilation and climate | Compressor internal and external ducting; rest of enclosure ventilated or air-conditioned to heat load |
| Electrical interfaces | Cable entry, lighting, auxiliary power distribution and signal interfaces (reserved or integrated) IEC 60364 |
| Piping and penetrations | Foam discharge, water supply, drainage and air openings reserved to system interfaces |
| Ingress protection | IP54 / IP55 (confirmed against ventilation openings and sealing) IEC 60529 |
| Corrosion class | C3–C5 (to site environment) ISO 12944 |
| Colour and marking | Colour, nameplates and safety signs to customer requirements |
| Transport and lifting | Shipped in one piece; lifting points designed into the structure, lifting frame available |
| Design life | 25 years |
| Factory inspection | Structure, penetrations and overall dimensions checked against system drawings and 3D model; inspection record supplied |
| Warranty | 12 (extendable to 24 by project) months |
| Management systems | ISO 9001 / 14001 / 45001 |
Product FAQs
Main-equipment enclosures, which house the compressed air foam unit, come in large, medium and small sizes to suit the system. There is also a fire-fighting robot enclosure, which stores the station's fire-fighting robot and is usually supplied alongside the main-equipment enclosure. Typical sizes for each type are in the specification table; final sizes follow the system layout drawing.
Yes, and that is the most common arrangement: the shell, doors, insulation, ducting and penetrations are built to the system drawings and delivered to the system manufacturer's factory, where the unit is installed before the complete cabin goes to site.
It depends on the unit itself: its components, envelope and service clearances set the enclosure length and zoning, and site area, access roads and crane conditions also play a part. Typical sizes for each are in the specification table; the final size follows the system layout drawing.
The equipment list, dimensions, weights and layout drawing of the unit; required positions for doors, ventilation, piping and cable entries; site temperature, corrosion, wind and snow conditions; transport and lifting conditions; and colour and nameplate requirements.
All types are wider than a standard shipping container and travel as one-piece oversize loads. Transport mode and route are set by the enclosure size, weight and destination; lifting points are designed into the structure and a lifting frame can be supplied.
Lead time depends on enclosure size, quantity and scope of fit-out, and runs from approval of the system drawings according to the production schedule.
Related Solutions
Prefabricated Infrastructure
Custom Prefabricated Enclosure Manufacturing Solution
ETENZ turns equipment needs into prefabricated enclosure platforms, combining enclosure manufacturing, electrical interfaces, environmental control, thermal management, fire/security provisions and OEM/ODM delivery.
