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FlexEgen unit
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FlexEgen

FlexEgen
Acoustic Generator Enclosures
Formerly QSK Generator Enclosure
Purpose-built

Power Generation Environments for:

  • Diesel generators
  • Gas generators
  • CHP (combined heat and power) systems
  • DRUPS (diesel rotary UPS) systems
  • Multi-generator power plants

DeliversA complete operating environment for power generation equipment.

FlexEgen is an engine-agnostic acoustic enclosure for diesel and gas generators. The enclosure is designed around the genset — ventilation, exhaust routing, fuel and acoustic treatment all sized to the engine. Standard UK build includes a bunded floor.

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Video

FlexEgen assembly

FlexEgen factory assembly — Cummins QSK engine being built and tested on the production line.

Three formats

One FlexEgen platform. Three structural base formats.

Every FlexEgen is the same acoustic enclosure family — chosen base format depends on fuel autonomy, site civils and installation method.

Dropover format
01

Dropover

Enclosure drops directly over a customer-supplied genset and bunded base. Minimal structural steel — maximum integration with existing equipment.

Integrated fuel tank format
02

Integrated fuel tank

Structural base tank doubles as fuel storage and chassis. Bulk fuel autonomy in a single lift, with bunded containment built into the enclosure.

Skid base frame format
03

Skid base frame

Heavy-duty structural skid for craning and re-deployment. Sits on a slab or concrete plinth — engineered for transport and rapid relocation.

Specifications

Indicative engineering data

Acoustic — standard
85 dBA @ 7.5 m
Acoustic — optional
Down to 60 dBA @ 1 m
Floor
Bunded steel floor (UK standard)
Ventilation
Engineered intake & discharge attenuators
Exhaust
Sized penetration with insulated transit
Fuel interface
Day-tank or bulk-fuel connection points
Engine compatibility
Diesel and gas, any specified OEM
Lead time
Indicative 10–16 weeks from genset data

Technical Specifications

Detailed engineering parameters

Structural & Envelope

Frame
Structural steel base — dropover, tank or skid configuration
Steel grade
S235 / S355 galvanized
Wall / cladding
Cold-rolled galvanised steel, powder coated
Insulation core
Multi-density polyester / mineral wool
Floor
Bunded steel floor (UK standard); skid or tank base options
Corrosion protection
ISO 12944 C3 standard; C5-M optional for marine / coastal

Acoustic & Ventilation

Acoustic — standard
85 dB(A) @ 7.5 m
Acoustic — optional
Down to 60 dB(A) @ 1 m (KS super-silent package)
Ventilation
Engineered intake & discharge attenuators sized to combustion + cooling air
Dampers
Motorised intake / discharge dampers (optional)
Weather features
Sand traps, snow hoods, gravity louvres (optional)

Fire, Fuel & Compliance

Ambient capability
Operating up to 55 °C
Fuel interface
Day-tank or bulk-fuel; integrated base tanks incl. 20-day rental bases
Fire detection
Linear heat / smoke detection (optional)
Suppression
Gas suppression (optional)
Compliance
Stage V ready; ATEX configuration available

Access & Electrical Interface

Doors
Gull-wing doors with gas struts; personnel doors with keyed locks
Lifting
Certified lifting lugs (2 or 4 hooks per model)
External cabinets
Connection cabinets for cable termination, BMS / SCADA, ATS (optional)
Load bank
Integrated or external load bank provision (optional)

Sizing & Logistics

Footprint
Sized to genset (≈ 4.8 m – 12 m typical)
Max dimensions
Up to 24 m (L) × 4.2 m (W) × 4.2 m (H)
Reference weight
≈ 1.9 t – 13.4 t depending on model
Transport
Low-loader or skid mount
Design life
20+ years external
Lead time
Indicative 10–16 weeks from genset data

Scope

Standard, optional and what we never do

Standard

Included on every FlexEgen unit.

  • Acoustic-rated enclosure shell (standard: 85 dBA @ 7.5m)
  • Weatherproof cladding and structural base frame
  • Ventilation louvres sized for combustion and cooling air (with airflow calculations)
  • Exhaust system penetration / interface point
  • Fuel line interface point
  • Access doors for maintenance and servicing
  • Roof bracket for muffler / silencer mounting
  • Bunded floor (standard on all UK projects)
  • Thermal insulation and corrosion protection
  • Documentation package and lifting / transportation provisions

Optional extras

Specified per project, costed as add-ons.

  • Enhanced acoustic package — down to 60 dBA @ 1m
  • Electrical interface package — external cabinet(s) for cable connection, load bank, BMS/SCADA, ATS
  • Enhanced fuel package — internal bulk tank, fuel level monitoring, bund leak monitoring
  • Internal infrastructure, electrical building services, fire/safety, and security packages

Exclusions

Out of scope — owned by other trades.

  • Power cabling termination — NEVER our scope
  • The generator set itself
  • Fuel storage beyond the interface point
  • Exhaust silencer / piping beyond the penetration
  • Control or ATS panel (unless separately specified)

WE NEVER TERMINATE POWER CABLING — THAT STAYS WITH THE ELECTRICAL CONTRACTOR / INTEGRATOR.