Laserfiche WebLink
Trac esearch Carperaticyn <br /> ALI:i'`I' ()N' ()PEA,ItA'E'E[�N..Am) irvwi,b:M .K A"t'IO <br /> The tracer leak detection illethod relies upon the addition of a,highly volatile liquid <br /> ' chemical to the product in the tank. if a leak occurs in the underground storage system, fuel is <br /> released into the surrounding soil. The tracer escapes from the fuel by vaporization and <br /> disperses into the soil by molecular diffusion. Various means are used to sample the soil vapors <br /> in the immediate vicinity of the underground storage tanks and associated piping. Each probe <br /> has an effective detection radius of approximately 10 to 12 feet. This means that a given probe <br /> should detect a leak anywhere within the area described by the 10 foot radius around the probe. <br /> The tracer must be placed in the tank at least two weeks prior to the probe sampling for this <br /> method to be effective. This process of leak detection by placing a liquid or gas tracer in a <br /> liquid product followed by detection of the tracer underground in the vapor phase is protected <br /> under TRACER patents. <br /> The throughput factor is used to determine the amount of tracer chemical used to inoculate <br /> a given tank. The throughput factor is a multiplier and is based on the number of tank refills <br /> expected within the first three clays after inoculation. The multiplied amount of tracer is used to <br /> Maintain the concentration of tracer in the tank to at least 1() ppm over the first 3 days after <br /> inoculation based on the estimated amount of fuel to be received during this period. <br /> LEAK 1)1:'tisc�rlt3N '1trE'l+Itt <br /> The classification of leakage is based on the presence or absence of tracer. <br /> f'A is FAIL <br /> Criteria: Criteria: <br /> NO tracer detected tracer detected <br /> - 2 - <br />