Petrol over water, gas lockers, resin and solvent in a closed shed. Pembrokeshire has a lot of this and very little of it has been assessed.
A marina or boatyard falls under DSEAR for the petrol and diesel on the fuel pontoon, the gas lockers on boats being worked on, and the resin, solvent and paint in the sheds. The assessment zones the places that need it, checks ignition sources and ventilation, since vapour over water and in a closed shed behaves differently, and records the controls.
Milford Marina, Neyland Yacht Haven, the Cleddau moorings and the yards around Pembroke Dock and Saundersfoot are all within a short drive of us, and this is a sector where the substances are obvious and the paperwork usually is not.
A dispensing installation over water. Zoning around the nozzle and the vent, what happens in a spill, and how the pontoon is isolated in an emergency.
Heavier-than-air vapour collecting in a sealed low point. The controls are ventilation and procedure, and both belong in writing.
LPG stores, the exchange point, and the route from the store to the berth. Cylinders lying down in a locker below deck level are a recurring finding.
Antifoul, thinners, acetone, resin and styrene, in a closed building with heaters running and extraction that was sized for summer.
Welding and grinding on a boat with fuel still in the tank, in a yard with other boats in the same condition either side.
Lead-acid charging on a mains hookup, and increasingly lithium installations retrofitted by owners with no documentation.
A yard normally needs a DSEAR assessment for the substances and a fire risk assessment for the buildings, the workshop and any accommodation or clubhouse. Written separately by two people they tend to disagree with each other, usually about the workshop.
We write both, so the zoning drawing and the fire assessment describe the same building in the same terms. Fire risk assessments →
If you dispense fuel, store gas cylinders, run a workshop, or charge batteries, yes. A fuel pontoon is a dispensing installation over water, and the assessment has to cover both the routine dispensing and the spill case.
Petrol vapour is heavier than air and a boat's bilge is a sealed low point with no natural ventilation. Vapour collects there and stays. That is why bilge blowers exist and why the pre-start ventilation routine matters more on a petrol boat than almost any other rule in boating.
For the yard, yes, wherever you store, exchange or fill cylinders. LPG is heavier than air and a drain, a duct or a pontoon locker will hold it. Cylinder storage areas and the route from the store to the berth both belong in the assessment.
Antifouling paints, thinners, acetone and resin systems are all flammable liquids, and osmosis or GRP work adds styrene. A boat shed in winter with the doors shut and heaters running is a specific and under-assessed situation.
Boats ashore still have fuel in the tanks and gas in the lockers, often for months, and hot work on the hard is common. Ashore storage does not remove the substances, it just moves them.
Storage, exchange and why heavier-than-air matters.
Antifoul, thinners and resin systems in a closed shed.
The waterway, the energy cluster and who else needs one.
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