Indian Standard for Gas Cylinder Color code Identification of for Industrial use
1. Scope (Purpose to use)
This standard covers the method of marking industrial gas cylinders up to and including 130 litres water capacity to identify their contents. It excludes medical gas cylinders identification of which is covered in IS:3933-1966 Color identification of gas cylinders and related equipment intended for medical use.
2. Identification Marking
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3. Colour Identification
3.1 All gas cylinders shall be painted externally in accordance with Table 2 to provide means for visual identification of the gaseous contents. The colour identification shall consist of a ground colour and colour bands. The width of the colour band shall be at least 0.25 D where D is the outside diameter of the cylinder shell.
3.2 Cylinders containing gases or gas mixtures for which exclusive identification is not provided in Table 2, shall be colour-marked in accordance with Table 3.
The numbers given in parentheses refer to the reference number of the colours given in IS : 54978 Colours for ready mixed paints (third revision)
When two bands are given, the red band or the blue band shall be placed next to the valve fitting and the yellow band shall be placed between that band and the shell colour of the cylinder.
The shade dark violet Is also known as mauve.
Note 1 – Only colors having reflectance of munsel value: not less than 6 should be used.
Note 2 – Paints which contain aluminum that constitutes a fire risk should not be used.
*The numbers given in parentheses refer to the reference number of the colors given in IS: 5-1978.
The red band shall be placed next to the valve fitting and the yellow band shall be placed between that band and the shell color of the cylinder.
#See IS : 1650-1973 Standard colors for building and decorative finishes
AMENDMENT NO. 1 – MARCH 1984
Cylinders containing specific gas mixture shall be color-marked in accordance with Table 4
Note 1 – Shoulder color bands shall be painted round the neck of each cylinder adjacent to the valve fitting and shall be wide enough to occupy half the portion.
Note 2 – Body color band shall be painted round Ihe cylinder midway between the base d neck and shall have a width equal to one-fifth of the total length of the cylinder. The numbers given in parentheses refer the reference number of the colours given In IS : S-1978 Colors for ready mixed paints (third revision)
AMENDMENT NO. 2 – AUGUST 2006
Adding Note to TABLE 2
NOTE— For liquefied petroleum gas(LPO)-any other Color is permitted with the approval of the statutory authority
AMENDMENT NO. 3 – JUNE 2013
NOTE — For aluminum alloy cylinders:
1. There shall be no change in the shoulder color band(s).
2. Instead of full length cylinder, the ‘ground colour’ shall be painted below the shoulder length covering 1/5 of the parallel length of the cylinder or 10 cm, whichever is more.
3. The ‘colour band’ if applicable shall be painted after the ‘ground colour’ as specified in 2. This shall also be 1/5th of the parallel length of the cylinder or 10 cm, whichever is more.’
References
IS 4379 (1981): Identification of contents of industrial gas cylinders