Agriculture

Bulk oil storage, and why the rules are different

Domestic oil storage is governed by Building Regulations and a risk assessment. Non-domestic storage above the threshold volume is subject to the Control of Pollution (Oil Storage) (England) Regulations, which impose specific mandatory requirements rather than leaving containment to an assessment.

In practice, for storage caught by those regulations:

• Secondary containment is mandatory, with a defined minimum capacity relative to the tank, and it must be impermeable.
• All fill points, draw-off points, valves and gauges must be within the containment, which is the requirement most commonly not met on older installations.
• Fixed pipework must be properly supported and protected, with valves at the tank and appropriate protection where lines are buried.
• Sight gauges must be supported and fitted with a valve that closes automatically when not in use.
• Fill points not within the containment need their own drip tray arrangement.

Agricultural fuel oil storage on farms has historically had specific treatment, and the position for any particular installation depends on what is stored, where, and in what quantity. The honest answer is that many farm installations we see would not comply if assessed today, and the liability for a pollution incident sits with the operator. An inspection establishes where you stand – see oil tank inspection.

Off-grid heating across multiple buildings

A typical farm has a farmhouse, one or more cottages, an office, workshops and livestock buildings – each with different heating needs, frequently on separate systems of different ages, and all off the gas grid.

The recurring issues:

1. Long distribution runs between buildings, often poorly insulated, losing substantial heat into the ground or the air.
2. Systems that grew organically, with buildings added to a heating circuit that was never sized for them.
3. Mixed heat sources – an oil boiler, a biomass unit, a heat pump, electric heaters – with no coherent control strategy.
4. Cottages let to tenants, which brings landlord obligations into what everyone thinks of as a farm.
5. Buildings used intermittently, with frost protection that is either absent or permanently on.
6. Nobody holding the whole picture, because it accumulated over decades.

The most valuable first piece of work on a farm is frequently a survey producing an asset register and a schematic – simply establishing what exists, what heats what, and where the isolation is.

Private water supplies

A significant number of Norfolk farms are on boreholes or private wells rather than mains water. That is a different regime entirely.

• No water company is monitoring it. The quality is the responsibility of whoever owns the supply, and local authorities have duties in relation to private supplies – including risk assessment and sampling for supplies serving certain premises.
• Treatment must follow a test. Sediment filtration, UV disinfection, iron and manganese removal and pH correction are all possible requirements, and which you need depends entirely on what the water contains. Guessing is wasted money at best.
• Pressure and flow are governed by the pump and the storage, not by a main, which changes how everything downstream is designed.
• Where a supply serves a let cottage, a farm shop, a holiday let or employees, additional obligations apply.
• Livestock and domestic supplies should be properly separated with appropriate backflow protection – a cattle trough is a high fluid category.

See water filtration for the treatment options. The sequence is always test first, specify second.

Practical realities of farm work

• Distances. Buildings are spread out and a job can involve several hundred metres between one end and the other.
• Access. Tracks, gates, livestock, and machinery movements. It helps to know before arriving.
• Seasonality. Harvest and lambing are not the time. Winter is frequently the best window for building services work on a farm, which is convenient because it is also when the heating problems show up.
• Mixed classification on one site. A farmhouse is domestic, a let cottage brings landlord duties, a farm office or shop is commercial premises, and the agricultural buildings are different again. The obligations differ across a single holding.
• Frost. Long exposed runs, unheated buildings and outbuildings standing empty. Farms produce more frozen pipe call-outs than any other setting – see frozen pipes.
• Three-phase supplies in workshops and around grain stores, which affects what equipment can be used.