23-02-2013, 01:09 PM
PIPELINES — IDENTIFICATION — COLOUR CODE
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SCOPE
This Indian Standard covers the colour scheme
for the identification of the contents of pipelines
carrying fluids in domestic and public buildings
and such industrial installations where a
specific colour code does not exist.
1.1 For the purpose of this standard, piping
systems shall include pipes of any kind and in
addition fittings, valves, and pipe coverings.
Supports, brackets or other accessories are
specifically excluded from application of this
standard.
1.2 This standard is not applicable to pipelines
buried underground or used for electrical
services.
iDENTIFICATION
The system of colour coding consists of a ground
colour and colour bands superimposed on it.
6.1 Ground Colours
The ground colour identifies the basic nature of
the fluid carried ( see Fig. 1 ) and also distinguishes
one fluid from another, for example
water from oil. The various ground colours are
indicated in Table 1.
Ground colour shall be applied
throughout the entire length for uninsulated
pipes, for insulated pipes, on the metal cladding
or on the pipes of material such as non-ferrous
metals, austenitic stainless steel, plastic, etc,
ground colour coating of minimum 2 m length
or of adequate length, not to be mistaken as
colour band, shall be applied.
Colour Bands
Colour bands are superimposed on the ground
colour ( see Fig. 2 ) to distinguish:
APPLICATION
Ground Colour
Colours as given in Table 1 shall be applied in
one of the following ways:
IS No. Title
5 : 1978 Colours for ready mixed paints
and enamels ( third revision )
2239 : 1963 Aluminium paint for general
purposes, in dual container
a) One kind or condition of a fluid from
another kind or condition of the same
fluid, or
b) One fluid from another but belonging to
the same group, for example carbon
monoxide from coke oven gas or diesel
fuel from furnace fuel.
a) Throughout the entire length ( see Fig. 1A );
b) As a colour coating of adequate length (but
in no case less than 300 mm) so that it is not
mistaken for a colour band ( see Fig. 1B );
c) As a colour panel;
d) On a label attached to the pipe; or
e) By the use of coloured adhesive tapes of
suitable material.