Continuous In-Tank Leak Detection
In 2015, Continuous In-Tank Leak Detection [CITLD] was added as a release detection method through a Federal Underground Storage Tank [UST] Regulation. The regulation also establishes requirements for CITLD's operation and maintenance.
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What is Continuous In-Tank Leak Detection?Any and all methods based in statistics where measurements are gathered incrementally by a system on an uninterrupted basis to determine the leak status of a tank.
Compliance with Regulation
- CITLD Methods Can Be Employed for Tanks Installed Before or On April 11, 2016
- Measurements are Gathered Incrementally Within a 30-Day Monitoring Period
Release Detection MethodsThere Are Two  Major Groups:
- Continual Reconciliation
- Continuous Statistical Release Detection [Continuous Automatic Tank Gauging or ATG]
- A Microprocessor or Other Control Console is Used to Process Data in the ATG System
- Dispensing Meters Which Allow for Automatic Recording and Use of Dispensing Data are Employed in the Continual Reconciliation Method
Requirements of Regulation"CITLD must be able to detect a leak at least 0.2 gallon per hour with a probability of detection of at least 95 percent and a probability of false alarm of no more than 5 percent."
- Verification of the controller's system configuration
- Testing of alarm operability and battery backup
- Inspection of probes and sensors to detect possible residual build-up
- Inspections to ensure cables are break- and kink- free, shaft is undamaged, and floats are moving freely
- Recording of all these tests for a minimum of three  years
Leak Detection with 360Training.com
- Learn More About Leak Detection with 360Training.com
- Sign Up for the Illinois UST Class A/B Operator Training Course
- Designed for Operators to Teach Them How to Manage On-Site Operations and Maintain a UST Facility