Designed and manufactured by WH Bence for Somerset NHS Foundation Trust, these two mobile breast screening units provide self-contained clinical facilities for Hologic 3Dimensions mammography equipment.  Each 12 m single-axle trailer is approximately 2.54 m wide, 4 m high and has an approximate unladen weight of 19,000 kg.  Four hydraulic lifting and levelling legs, two front wind-down legs and an emergency hydraulic override provide a stable screening platform, while slide-out entrance and exit platforms, steps, handrails and canopies support safe patient access and a one-way route through the unit.

The internal layout includes a reception area, waiting area, two curtained changing cubicles, an X-ray room and a separate staff room with kitchenette.  Radiation protection is incorporated through three-millimetre aluminium shielding within the imaging-room walls, together with steel protection in the floor and access doors.  Wipe-clean GRP wall finishes, medical-grade non-slip flooring, independent climate control, fresh-air ventilation, HTM-compliant handwashing facilities, fire and security alarms, panic alarms, IFM monitoring, CAT6A networking and intercom systems support daily clinical operation.  Each unit is equipped with a hybrid battery, inverter/charger, solar and small-generator system, with the ability to connect to a standard 32 A single-phase supply when available.

·         Clinical facilities: reception desk, waiting seating, two changing cubicles, Hologic screening room, staff kitchenette and dedicated storage throughout

·         Water provision: 300-litre fresh-water and 300-litre grey-water tanks, mains water connection, separate water heaters, kitchen sink and HTM-compliant clinical handwash basin

Hybrid power solution benefits:

·         Quieter operation: stored battery power allows essential equipment, including the medical fridge and designated reception socket, to operate without the generator running continuously, creating a calmer environment for patients and staff

·         Lower fuel use and emissions: the smaller generator operates only when required to support or recharge the system, with solar panels providing additional renewable charging

·         Greater site flexibility and continuity: the units can use their onboard power where mains electricity is unavailable, connect to a standard 32 A single-phase supply when provided, and maintain essential services from stored battery power during a loss or changeover of the external supply

·         Reduced generator wear: fewer running hours can reduce servicing requirements and extend the generator’s operational life

·         Automatic power management: the integrated battery, inverter/charger, solar and generator arrangement uses available energy efficiently with less day-to-day intervention, while the power-management screen shows system performance and the energy generated by the solar panels