British Standards Relevant to Agriculture

British Standard Summaries

BS5502: Part 25: 1991
Building and Structures for Agriculture.
Design & Installation of Services & Facilities


The text herein is not a a full reproduction of the British Standard. It is summary based upon interpretation of the original text and not intended as a replacement for the full text. It should be used for general guidance only.

BS5502 is sub-divided into a number of individual standards. These can be broadly broken down as follows:

  • Part 0: Introduction
  • Parts 10 - 19: Reference information
  • Parts 20 - 39: General designs
  • Parts 40 - 59: Livestock buildings
  • Parts 60 - 79: Crop buildings
  • Parts 80 - 99: Ancillary buildings

BS5502 Part 25 gives recommendations on the design and installation of electrical, gas, water and drainage services for buildings used for agricultural purposes. This includes guidance on the storage of liquid fuels and the installation of chimney heaters.

Drainage

  • Due regard to the relevant legislation (see BS5502:11 and ADLib legislation database) should be made at all times.
  • Uncontaminated surface water should to kept separate from dirty water and other polluted liquids.
  • Uncontaminated surface water should be discharged directly to soakaways or watercourses but only after the advice of the relevant authority (Environment Agency / SEPA) has been sought.
  • Human waste must be handled separately to all other wastes.

Wastes

  • Due regard to the relevant legislation (see BS5502:11 and ADLib legislation database) should be made at all times.
  • Human waste must be handled separately to all other wastes.
  • All organic wastes from livestock (e.g. FYM, slurry, dirty water) are considered to be agricultural trade waste.
  • Effluent and liquor from conservation, fermentation and degeneration of crops are also considered to be agricultural trade waste.
  • Other agricultural trade wastes include water contaminated with cleaning agents (e.g. from dairy cleaning), food processing wastes, agricultural chemicals and medicines (e.g. sheep dip, crop sprays, oil).
  • Detailed recommendations on waste management are given in BS5502:31.
  • Detailed recommendations on the design of slurry storage tanks and reception pits are given in BS5502:50.
  • Special consideration should be given to handling procedures for silage effluent due to its highly polluting nature.
  • All farm wastes must be disposed of in a safe, legal and appropriate manner.
  • You should ensure that sufficient storage capacity for the waste likely to be generated is made available.
  • Waste containment should be carried out in such a way as to minimise all risks of pollution.

Water

  • Due regard to the relevant legislation (see BS5502:11 and ADLib legislation database) should be made at all times.
  • Clean uncontaminated water is required for livestock as drinking water and for feed preparation as well as for cleaning purposes and emergency procedures such as fire fighting.
  • Mains supply should be provided in accordance with statutory requirements.
  • Fire fighting supplies should be in accordance with BS5306:1 and BS5502:23.
  • External water fittings should be protected from extreme weather conditions and from other hazards such as accidental damage or corrosive environments.
  • Stop valves should be provided close to where the service pipe enters a building. Drain taps should be fitted.
  • Storage tanks and cisterns should be accessible for inspection, maintenance and cleaning.
  • Overflow pipes should be fitted where discharge can be seen.
  • Storage tanks should be fitted with a lid, insulated and screened to prevent access by birds, mammals, vermin, insects and dirt.

Liquid fuel

  • Due regard to the relevant legislation (see BS5502:11 and ADLib legislation database) should be made at all times.
  • Installations should comply with BS799 and BS5410. The tank should not be installed on a roof or over a building.
  • Safety, security and access should be given due consideration.
  • Storage tanks should be surrounded by a purpose built chamber and this should meet the requirements given in the full Standard.
  • The chamber should be ventilated and well lit.
  • A bund providing containment of any loss from a storage tank must be provided. This should be in accordance with BS5502-20. It should include a collection sump. There must be no outlet to drains or sewers.
  • Bund capacity should be at least 120% of tank capacity in low risk situations. Where multiple tanks are serviced by the same bund the capacity should be 100% of the largest tank or 20% of total tank capacity which ever is the greater plus a freeboard.
  • Adequate means of measuring the amount of oil contained by the storage tank should be installed.
  • The full Standard provides details of ancillary work such as pipework, drain valves, vents and fire valves. Also covered are issues relating to valves, cocks, manhole covers and warning signs.
  • The full Standard provides details relating to liquefied petroleum gas and compressed air services.

Electicity

  • Due regard to the relevant legislation (see BS5502:11 and ADLib legislation database) should be made at all times.
  • All installations should comply with BS ISO 5707 and BS ISO 6690 for milking installations.
  • Installations should include: consumer controls and distribution system, lighting for buildings, yards and roads, heating, power sources and ventilation, electric fences and standby generating plants.
  • Wiring diagrams must be available for each building unless it is a domestic dwelling.
  • The full Standard provides details of design considerations and operating conditions for a variety of different situations including stores, covered yards and livestock buildings, dairy buildings, drying sheds and buildings used for housing machinery.
  • Advice on the incoming supply is given in the full Standard. Due regard to future building expansion should be given.
  • Precautionary measures against special conditions are also given in the full Standard.
  • Underground cables should be laid at a depth of not less than 600mm in ground under cultivation. Under certain situations the minimum depth should be 1m. On open ground and under roads the minimum depth is 760 mm.
  • Specification for the installation of apparatus is given in the full Standard.

Chimneys, flues and heating appliances

  • The Clean Air Act stipulates minimum heights of chimneys for health reasons.
  • Due regard to other relevant legislation (see BS5502:11 and ADLib legislation database) should be made at all times.
  • Boiler and incinerator buildings must be situated well away from other high risk areas and buildings.
  • Installation specification is given in BS5502:23.
  • The full Standard provides details relating to ventilation, lighting, draught, chimney installation and lining and chimney construction.
  • All flues and chimneys should be constructed to ensure a minimum risk of fire.
  • Intensive livestock buildings should be designed to given due consideration to the risk of fire from heating appliances.

Safety and security

  • Care should be taken to minimise all hazards.
  • Due regard to the relevant legislation (see BS5502:11 and ADLib legislation database) should be made at all times.
  • Adequate warning notices should be displayed in high risk areas in accordance with BS5378 and BS5502:20.

A British Standard nor this summary does not, necessarily, include all the necessary information for correct implementation of the Standard to any specific application. This is purely the responsibility of the user. Standards are updated by either amendment or revision. Users should ensure that they are using the latest version.


The full text of this Standard can be obtained from the British Standard Institution

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