VEEDER-ROOT COMPANY

Understanding Line Leak Detection Methods / Test Type / Certifying

Product Knowledge Session

> Pressurized Electronic Line Leak Detection (PLLD)

> Mechanical Leak Detection (MLD)

Veeder-Root / Red Jacket Line Leak Detection Methods

Electronic Line Leak Detection

Why use an ATG with Electronic Line Leak Detection • Veeder-Root’s patented measurement technology tests lines at full pump pressure for

highly accurate 0.1 gph precision,0.2 gph and 3.0 gph gross testing. • Wide range of piping types • Compatible with TLS-350, TLS-450 and TLS-450PLUS systems • Testing Frequencies - Automatic, Monthly and Repetitive for business convenience • Meet’s Federal, State and most local line leak detection regulations

Benefits: • Performs 3.0 GPH line testing that meets Federal line leak detection requirements. • Can perform a 0.1 and 0.2 gph test to meet monthly and annual needs. No need for a

separate annual test. • Eliminates Slow Flow from thermal contraction • Detects loss of pressure during dispensing activity

3.0 GPH PLLD Pressure Decay Test

0.2 and 0.1 GPH Pressure Line Testing

Electronic Line Leak Detection (ELLD) Applications

• Site Equipment – STP, Piping Type and length determines

application requirements for Electronic Line Leak Detection (ELLD)

• Line Leak Application Guide – Provides detailed information for supported

applications – Application questions you may contact

Veeder-Root Technical Support at 1-800-323-1799 M–F 8am to 7pm

ATG Operability Testing Veeder-Root environmental monitoring systems installed in accordance with installation manual requirements are designed to detect and report conditions that inhibit proper operation. Veeder-Root systems self-diagnose essential components, and if a component failure is detected, will not complete and report tank and line tests. The system will issue an audible and visual alarm when a failed or disconnected sensor is detected. Veeder-Root recommends periodic operability testing on its leak detections systems at a minimum annually. Reference Manual # 577013-814 (H or Higher)

ATG Operability Testing • 3 GPH testing utilizing the Red Jacket FTA • 3 GPH testing utilizing the Red Jacket FX tester • 3 GPH testing utilizing the KWA LS 2003 Leak

Detector Tester • Verification of 0.2 and 0.1 GPH Performance

Reports: Environmental

Line Leak Test Results

Mechanical Line Leak Detection (MLLD) Why use an Mechanical Leak Detector (MLD)

• Red Jacket proven reliability for 5 Plus decades • Wide range of piping types • Meet’s Federal, State and most local line leak detection

regulations

Benefits: • Performs 3.0 GPH line testing that meets Federal line

leak detection requirements. • Detects loss of pressure during dispensing activity

Drawbacks • Slow Flow from thermal contraction

Leak Detector Applications • Leak Detectors can only find leaks downstream of the metering circuit in the valve • Leak detectors cannot find leaks if the pump runs continuously. Three things need to

happen for a test to be performed: – The pump must turn off – The pressure must fall – The pump must start

• Red Jacket leak detectors must operate in clean product. – Abrasives will degrade performance. – Excessive additive concentrations may affect Elastomers

• Fuel Types. UL Cert: – 100% Diesel (contains max 5% Bio per ASTM D975) – 100% Gasoline – Gasoline and up to 10% Ethanol Performance Guarantee – All of the above and up to E-100

• Red Jacket Leak detectors are designed for operation in submersible pumping systems in vehicle fueling operations – Performance in centrifugal ,suction pump systems cannot be guaranteed. – Booster pump systems where a submersible pump boosts the pressure may

present problems with pump interaction and are not recommended

How Do Mechanical Leak Detectors Work? When the dispenser is activated, product flows through the detector

at a rate of 1.5 to 3.0 gallons per minute. This causes the pressure in the pipe to increase rapidly to 8-10 psi in

the case of FX model Leak Detectors. This pressure increase actually pushes the valve in the leak detector

toward a metering position, restricting the flow to a rate of 3 gallons per hour or greater.

If there is a leak in the system of about 3 gal/h or greater at 10 psi, then the pressure will not increase further and the flow will remain restricted.

If there is no leak or a leak of lesser magnitude, then the pressure will build slowly, though it will eventually reach full operating pressure.

If the system is tight, then the pressure will increase rapidly. As the pressure goes above 10 psi, the valve is forced to it’s fully

open position and the system is in operation. The valve remains open until the submersible pump turns off and the pressure in the line drops below a “static pressure”.

Product Thermal Contraction • Items that affect Thermal Contraction:

– Length of piping and pipe diameter (piping volume) – Volume of freshly pumped product left cooling in the pipeline (gallons

dispensed) – Location of dispenser in piping system. – Backfill around piping – Season – Burry depth of piping – Daily temperature swings – Time Interval from last pumping

• Basically a myriad of things make it hard to predict • The resulting drop in pressure forces Leak Detectors to perform numerous

leak tests. This, coupled with the possibility of opening times longer than the solenoid delay time, may cause increased nuisance tripping of leak detectors.

• The worst case scenario for thermal contraction is heavy pumping followed by a long idle time

Note: a 17 ° F (about 10°C) temperature change will change the volume of gasoline about 1 %

Types of Red Jacket Leak Detector Annual Verifications

• The following testers may be used for any Red Jacket Leak Detectors

– AVO Functional Check (Apparatus to Verify Operation)

• Described in Red Jacket publication RJ 21

– FX Tester Functional Check • Described in Red Jacket publication 051-272-1

AVO Leak Detector Testing Functional Testing

Note that performance of the Simulated Leak Test set forth in Section IV will satisfy the minimum functionality check requirements for annual inspection of leak detectors. verified upon start-up and that testing of the leak detector be performed routinely—at least annually.

Functional Testing Ref: Red Jacket publication RJ 21

•AVO (apparatus to Verify operation) testing is performed at the dispenser. •Only section IV of RJ 21 is required to be performed for functionality test.

FTA Leak Detector Testing Finite Testing

Ref: Red Jacket publication RJ 20

•Finite Testing allows a more consistent, accurate form of leak detector test •Leak rates are measured and timed at 10 psi for more consistent results. •Finite testing is required where local requirements demand 3 gph at 10 psi field tests.

•FX Tester functional testing can be performed at the submersible pump on FX2 Model Leak Detectors. The tester may also be used to test other Leak detectors at the island by installing a Snap-Tap fitting on the test port of the impact valve for the duration of the test. •Snap-Tap fittings allow fast, clean connection of the tester at the pump without shutting down product line.

FX Tester System- Functional Testing

Snap- Tap Fittings