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Gas meter testing

Here is information on how the Pipeline Safety Division tests gas meters.

Pursuant to state law, the Pipeline Safety Division tests each gas meter used in Massachusetts for accuracy. After a gas meter has passed the test, the Pipeline Safety Division seals it with a decal to show that the meter has been approved for use. New meters are tested on a sample basis. 

A meter may remain in use for up to seven years. After seven years' use, it must be replaced by a meter that has been newly tested and approved. A meter that has been removed must be tested and approved before it is put back into service.