Pipe Markers / Identification

Understanding AS 1345-1995 “Identification of the contents of Pipes, Conduits and Ducts

Why Mark Pipes?

Pipe markers aid in the quick identification of a pipes' contents – especially in an emergency situation. A successful pipe identification program helps employees, contractors and emergency responders to distinguish between pipes where there are several side by side. Pipe markers also save valuable time when tracing lines is necessary during maintenance.

Where Should Pipe Markers be Located?

AS 1345 specifies that markers be placed adjacent to all junctions, valves, service appliances, bulkhead and wall penetrations. Markers shall be spaced no more than 8m apart except for long, uninterrupted straight runs of external services where spacing shall not exceed 50m.

Marker Design/Layout Requirements: AS 1345 addresses several elements of pipe marker design including: Marker Layout: A marker is comprised of a printed word or words on a coloured background with a contrasting border and chevron to show direction of flow.

Marker Colours: The legend and background colours of a pipe marker are determined by the pipes contents and are specified according to the table on pages 144-146 of the Brady catalogue.