CCOE confirmed vide letter reference No. R:4(2)85/II dated 19.6.1991 agreeing
to increase the periodicity of statutory testing of new LPG cylinders (first
statutory testing) from 5 years to 7 years.
To facilitate segregation of the cylinders at the plant for statutory
testing, a uniform procedure is evolved by the Oil Industry. According to the procedure, color coding /
marking is done on one of the vertical stay plates and inside face of the
vertical stay of the valve protection ring.
Color coding of inside portion of the vertical stay plate for first
statutory testing after 7 years from the
manufacturing date of the cylinder is as follows :
|
Background
Colour
|
IS Spec.
|
Lettering
|
Yr. Of
Mfr.
|
Yr. Of
Testing
|
Coding for qtr. Of manufacture
|
||
|
Month
of Mfr.
|
Code
|
||||||
|
Air Craft Blue
|
IS:108
|
White
|
1998
|
2005
|
JAN
FEB
MAR
|
A
A
A
|
|
|
Salmon Pink
|
IS:443
|
Black
|
1999
|
2006
|
|||
|
APR
MAY
JUN
|
B
B
B
|
||||||
|
Black
|
IS:521
|
White
|
2000
|
2007
|
|||
|
Yellow
|
IS:355
|
Black
|
2001
|
2008
|
JUL
AUG
SEP
|
C
C
C
|
|
|
White
|
IS:127
|
Black
|
2002
|
2009
|
|||
|
Sea Green
|
IS:217
|
Black
|
2003
|
2010
|
OCT
NOV
DEC
|
D
D
D
|
|
|
Dove Grey
|
IS:694
|
Black
|
2004
|
2011
|
|||
Diagram No. 33
may be referred to for details of the marking on vertical stays.
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