When is tank testing required? Up until December 22, 1998, most tank owners had an annual precision tank tightness test once a year along with daily inventory control. After December 22, 1998, monthly monitoring was required for release detection for tanks. Here are a few reasons why a precision tank tightness test is required:
- This is a new tank installation
- An SIR report or ATG shows a tank failure and the problem is not equipment failure (ATG) or incorrect data submitted to the SIR vender.
- Two consecutive months of inventory control show that the allowable limit (gallons dispensed X 1% plus 130) has been exceeded, and there were no errors in the recorded data.
- Out of service tanks (more than six months) are being returned to service and they were not monitored monthly.
Recommendation: If you get a call and someone is asking for a tank tightness test, be sure to ask them why they are requesting the tank test. You would be surprised how many times a tank test was requested and the caller just thought they still had to do this every year. If you’re not sure a tank test is needed, give your local PSI branch a call.