Single-axle trailer versions are the easiest to manoeuvre and they are usually quite lightweight – most twin shower units weigh between 900kg and 1500kg.   Once sited, apply the handbrake, wind down the stabilising legs, and level the unit.

“Self-Contained” decontamination units carry their own water supply and on-board generator. Turn on the LPG water-heater, switch on the generator, and connect the waste-water filtration system between the trailer and the waste disposal point.

Then turn on the internal lighting, space heating, negative pressure air filtration system (NPU), and shower & waste pumps.  You’re now ready to use the decontamination unit.

It’s worth knowing about two variations of the above:

• “Standard” decontamination units: don’t carry water or on-board generators – they require continuous connection to on-site services of electricity and water.  When using trailers with an integral LPG water heater, a 13Amp 240v electricity supply is usually sufficient, together with a mains pressure water supply.
• “Electric” decontamination units: some industrial sites don’t allow LPG or naked flames; in these instances electric water heating is usually selected, which requires a lot of electrical power – typically 63A at 240v for a unit with two showers!