Tips From

Frank the Tank

 

Statistical Inventory Reconciliation (SIR)

SIR is a method of leak detection where a trained professional uses computer software to conduct a statistical analysis of daily inventory, delivery and dispensing data collected by the owner/operator. This method of leak detection must be approved in writing on a site-by-site basis by BUSTR before implementing.

Prior to implement­ing this method, the tank owner/operator must supply BUSTR with certain information, including the facility ID number, tanks that will be involved with the SIR method, name of the SIR vendor, and the method of SIR that will be incorporated. The tank owner/operator can contact BUSTR at (614) 752-7938 to obtain a list of SIR vendors currently offering their services in Ohio.  

Tank data can be gathered electronically or manually and must be supplied to a BUSTR approved SIR vendor at least once per month. The vendor will provide an owner/operator with the results after the statistical analysis is completed. 

If you:

use manual gauging (sticking) to gather the inventory data, make sure your stick can measure to one-eighth of an inch. You must also record meter readings from your dispensers and document fuel deliveries.

If you:

use an ATG system to gather data, you must service all the ATG components according to the manufacturers instructions (generally annually). See previous Frank the Tank Tip on Automatic Tank Gauging systems.

If you:

receive an “inconclusive” result, you must perform an investigation in accordance with BUSTR’s “Compliance Guidance for SIR, Amended May 10, 2001”. Depending on the frequency of the “inconclusive” results you may have to perform a tightness test on the USTs system or switch to another form of leak detection.

If you:

receive a “fail” result, you must report a suspected release to BUSTR and immediately begin a suspected release investigation

 

 

Keep:

results of your SIR tests for at least one year. Unless you are keeping records of the 30-day release detection results and maintaining then for at least a year, you are not performing leak detection properly.

Keep:

records of investigations conducted as a result of any monthly monitoring conclusion of “inconclusive” or “fail” for at least a year.

Keep:

all records of calibration, maintenance and repair of equipment for the life of the equipment, if you use an ATG system for data collection.

Make sure employees who run, monitor, or maintain the release detection system know exactly what they must do and to whom to report problems. Develop and maintain regular training programs for all employees.

Compliance with UST regulations is a pre-requisite for remaining eligible for Fund coverage and claim reimbursement.

 

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