Leak Detector Testing


Pressurized fuel delivery systems are required to have some form of automatic line leak detection (ALLD) which must be used in conjunction with line tightness testing. Adequate methods of ALLD include mechanical line leak detection (MLLD), electronic line leak detection (ELLD), and electronic sump sensors.


ALLD was designed to detect a “catastrophic” loss or a line leak that exceeds 3.0 gallons per hour (gph) at 10 pounds per square inch line pressure within 1 hour. All pressurized lines must have this, state and federal regulation require that they be tested annually in accordance with manufacturer’s specifications. Each manufacturer may have their own procedures to adequately test the leak detector for proper operation.  


MLLD will only accomplish 3.0 gph leak detection. That is why an annual line tightness test at 0.1 gph or monthly monitoring is required on the pressurized lines in addition to the annual MLLD test. In the event of a leak, the MLLD will go into slow flow and allow less than 3 gallons per minute through the dispenser. This will usually prompt the next customer to complain about the dispenser pumping so slowly. At that time you should contact your service company to figure out what is causing the slow flow of fuel to the dispenser, and make any necessary repairs. Pressurized lines must never operate without some form of automatic line leak detection.


SES uses the Ezy-Check Leak Detector Tester and maintains a current Third Party Certificate.  Should your Leak Detector Fail, SES can obtain the required permits and change out the faulty leak detector while on site.  Saving both time and  loss of leak detection.  



Relevant Links

Copyright © 2018 Southern Environmental Services.