How to Know about LPG Cylinder Expirty Date

Have u ever heard about LPG gas cylinder's expire date. How to find LPG cylinder's expiry date?
Most of us do not know this. I came to know today from the gas stockiest, because here one accident occurred. Today as I was passing by the cylinder distributor in our colony a cylinder with A07 was found.

Expired Cylinders are not safe for use and may cause accidents. All concerned should take necessary steps.
Please be cautious at the time of accepting any LPG cylinder from the vendor.

Here is how we can check the expiry of LPG cylinders:
On one of three side stems of the cylinder, the expiry date is coded in alphanumerical as follows A or B or C or D and some two digit number following this e.g. A07.

The alphabets stand for the quarter in a year-
A - January to March (First Qtr).
B - April to June (Second Qtr).
C - July to Sept (Third Qtr).
D - October to December (Fourth Qtr).

The digits stand for the year till it is valid .
Hence A07

* "A" stands for the first quarter i.e. January to March.
* "07" stands for the present year 2007.