Does anyone knows if the following is true ? I receive it from someone who said that there is an expiry date on every LPG cylinder. How to identify the expire date ? It is coded with alpha numerically as A, B, C or D on one side of the 3 stems. Each represents a quarter month :-
A – 1st Quarter (End in March)
B – 2nd Quarter (End in June)
C – 3rd Quarter (End in Sept)
D – 4th Quarter (End in Dec)
The digit stands for year, an example is D 06 means the cylinder will expire in 4th Quarter of 2006. As shown in the following picture.
This cylinder will expire in Dec of 2013.
Although this is a piece of useful information to us and I tried to verify by searching the internet but to no avail. Even the website from Shell also does not mention any of this indication.
I found one website explained that the code refers to the due date for testing, it is a mandatory safety test once every five years.
Can someone verify this ?



