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PEI / RPI 200 - 17 ATGs monitor the product level in storage tanks and can 8 . ELECTRONIC be programmed to perform compliance tests that include MONITORING 0 .2 gph static and dynamic ("continuous") leak tests, and SYSTEM INSPECTION 0. 1 gph ("precision") tests . AND TESTING 8. 2 . 1 ATG Functionality Test. 8. 2.1. 1 General . The ATG must be pro- 8 . 1 General . Electronic underground storage tank grammed using site- specific parameters (UST) monitoring systems provide a warning or alarm for the UST system to ensure proper opera- when a leak in the UST system occurs . The monitoring tion. Tester should confirm the required system and sensors need to be programmed to reflect setup and testing parameters with the the conditions for each individual site to ensure proper owner/operator. operation . For the remainder of this section, the term "ATG" shall be used to refer to all electronic UST On dual float systems, the second float monitoring systems whether they have an automatic tank indicates the level of water in the tank. o gauge probe or are solely an electronic alarm for sensors 8 , 2 ,1. 2 Purpose. The purpose of this installed. "ATG" is a general industry term that is used to test is to : identify all electronic tank monitoring equipment. • determine whether the ATG shows the Before starting any testing, print out the system configu- correct product level on the console ; ration on the ATG console (if equipped with a printer) determine whether the ATG shows the and verify that site setup parameters are correct. Make sure that the sensors are correctly labeled to indicate their correct water level on the console; location. verify that the water alarm is operating correctly and provides a warning at the Keep completed compliance tests on file to confirm that programmed set point. during the test: • the system was continuously powered and monitored WARNING : Water ingress into tanks con- for the data collection period; taining ethanol-blended gasoline may not • tank probes and leak sensors were functioning properly, be detected using water floats designed for non-ethanol -blended gasoline . 8. 2. 1.3 Description of Test. The pro. ALL FU MT10145 rll " cedures in this test are for a probe, properly I....... ...... ...... .. installed per manufacturer ' s instructions , a . .- equipped with floats having a range inside o the tank that extends from the bottom to the top of the tank. The ATG probe is removed from the tank. The product float and water float positions are compared with the console readout. FIGURE 8-1. The indicator lights and the LCD display on the monitoring console show the status of the UST 8. 2. 1.4 Preparation . Use this test pro- system. cedure in conjunction with the monitor- ing system manufacturer 's installation and maintenance instructions . 8 . 2 ATG Probes . ATG probes continuously measure the product level in a UST using an inAank probe con- Refer to the tank manufacturer ' s tank nected to a console. To properly evaluate its condition, chart for the capacity in gallons , the diam- the probe needs to be removed from the tank and visually eter and the volume of product that corre- inspected. sponds to the product level. pei . org