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PRODUCT LINE LEAK DETECTION Katie Seaborn AMERICAN CONTAINMENT SERVICES, INC. ® Annual GTEC Underground Storage Tank Management & Compliance Seminar - 2014
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Angle Check Valve OR Foot Check Valve SUCTION PUMP Under Pump Check Valve UST 1. Common Method Product Pipe 2. Safe-Suction Method Suction Systems
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SUCTION SYSTEM Leak Detection Requirements: For COMMON systems (one is required): Product Pipe Tightness Test Every 3 Years Monthly Interstitial Monitoring Monthly Groundwater OR Vapor Monitoring Monthly Statistical Inventory Reconciliation For SAFE-SUCTION systems (all are required): Piping must slope back to the tank. Only one check valve, and it must be installed as close as practical to the pump. The above must be verifiable.
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Dispenser Shear Valve UST Product Pipe Submerged Turbine Pump Pump Motor Pump Head Pressurized Systems
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Must be equipped with an automatic line leak detector which must be tested annually, AND use one of the following: Annual Line Tightness Testing Monthly Vapor Monitoring Monthly Groundwater Monitoring Monthly Interstitial Monitoring Monthly SIR PRESSURIZED SYSTEM Leak Detection Requirements:
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Federal EPA Requirements for Automatic Line Leak Detectors (LLDs): Can detect a 3-gallon per hour leak, at a line pressure of 10-psi, within 1 hour. When a leak is detected, LLDs must shut off the product flow, restrict the product flow, or trigger an audible or visual alarm. Must have a Third Party Certification. More PRESSURIZED SYSTEM Leak Detection Requirements:
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No leaks at the STP or leak detector No reduced flow No liquids in secondary containment No alarms on electronic monitoring devices Recommended PRESSURIZED SYSTEM Leak Detection Checklists: Monthly Annually Leak Detector Functionality Test Product Line Tightness Testing Visual Inspection of all accessible piping, fittings, and secondary containment ATG System Inspection and Functionality Test
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(Electronic Sump Sensor) FE Petro MLLD Mechanical Pressurized Line Leak Detectors (MLLDs) Red Jacket MLLD
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Electronic Pressurized Line Leak Detectors (PLLDs) Incon PLLD’s V/R PLLD’s (Wireless PLLD)
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POP QUIZ! What kind of system is it, and what is required? Common Suction Method Safe-Suction Method Pressurized Line PTT Every 3-yrs, OR Interstitial Monitoring, OR Stat. Inv. Reconciliation No Leak Detection Required for the Product Piping PUMP UST PUMP UST PUMP UST Annual LD Test AND Annual Line PTT, OR Interstice Monitoring, OR Stat. Inv. Reconciliation
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POP QUIZ!... continued POP QUIZ!... continued What kind of system is it, and what is required? Annual Line PTT OR Stat. Inv. Reconciliation AND Interstice Monitoring (if piping is double wall) UST GRAVITY/SIPHON SOLENOID VALVE
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POP QUIZ!... (last question) What kind of system is it, and what is required? COMING SOON: Annual Line PTT OR Stat. Inv. Reconciliation AND Interstice Monitoring (if piping is double wall) UST PUMP EMERGENCY POWER GENERATOR SOLENOID VALVES CURRENTLY: No leak detection required. Emergency Power Generator Systems are deferred from 40 CFR Part 280 Subpart D. GRAVITY/SIPHON
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Examples of what not to do…
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… what is leak detection really all about? At the end of the day…. Any questions? Photograph courtesy of albertshaler.buzznet.com Photograph courtesy of Mike Moreland Photography
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