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Pipe markers aid in the quick identification of a pipe's content. With a successful pipe markering identification program, colour coding provides efficiency in identification of a pipe's content, making the job easy on hand for contractors and emergency services.
This standard is referred to in the Catalogue of Australian Standards as AS 1345-1995 Identification of
the contents of pipes, conduits and ducts. It specifies the means of identifying the contents of pipes,
conduits, ducts and sheathing used to contain fluids,or for the distribution of electrical or communications
services in land installations and on board ships by the use of colours, words and symbols. Markers
shall be placed no more than 8m apart except for long, uninterrupted straight runs of external services
where spacing shall not exceed 50m.
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| BASIC IDENTIFICATION | APPLICATIONS | EXCLUSIONS |
 | Drinking water, Waste water, Cooling water (including seawater), Heating water, Storm water, Hydraulic power supply, Recycled water, Live steam, Process steam | Sewage, and other dangerous waste water |
 | Exhaust steam, Space heating steam, Fuel and lubricating oils, Animal and vegetable oils for food processing | ------ |
 | Petrol, Diesel and other light fraction fuels, Other flammable or combustible liquid substances | Liquified gases under pressure |
 | Fuel gases, Process gases, Liquefied gases under pressure, Pneumatic transport of particular solids, Exhaust gases and fumes, Medical gases | Air Highly acid or alkaline gases |
 | All corrosive liquids and gases | ----------- |
 | Compressed Air, Instrument Air, Vacuum, Ventilation, Pneumatic conveyor | ----------- |
 | Chemical mixtures in water or organic solvent, Liquid foodstuffs, Sewage, Organic waste, Chemical and process wastes | Corrosive materials, Flammable or Combustible material |
| SERVICES |
 | Dedicated water, Foam, other fire extinguishing supply lines | Electrical supply, Communication circuits |
 | Electricity supply circuits | Extra-low voltage circuits |
 | Telephone and other communication circuits, Extra-low voltage supply | --------- |
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