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• • <br /> 2. Preparation of the exterior tank wall for Sensor , <br /> attachment. This involves cleaning several two-inch <br /> diameter circles around the tank perimeter. Sensors , <br /> are attached to the wall and cabling routed to the van; <br /> 3. Calibration of the sensor array; <br /> 4. Collection and processing of acoustic data for <br /> 2-4 hours. Upon completion, plant personnel are <br /> informed of availability of tank for continued use; ' <br /> 5. Post-monitoring analysis and display of data. This <br /> is completed on site and recorded data are stored ' <br /> for later reviewif needed; <br /> 6. Source location printouts of the location of any leak(s) ' <br /> in the subject tank with indications of leak intensity; and <br /> 7. Submit report describing test results, teat methods, <br /> and tank calibration data. ' <br /> Test Personnel And Eruipment <br /> The Pelagos AE tank-test system was developed by Pelagos Corporation 1 <br /> specifically for detection and location of tank-floor leaks. Our research <br /> and development personnel have more than ten years experience in ' <br /> acoustic-emission-system design and application. Our test personnel are <br /> highly trained. The crew chief of every teat crew is certified for AE leak ' <br /> testing and has completed training as outlined by the American Society of <br /> Nondestructive Testing. <br /> 1 <br /> In addition to our own tank-test procedures, Pelagos conforms to the <br /> following procedures of the American Society for Testing and Materials 1 <br /> (ASTM) , as applicable: <br /> E 650-78 Recommended Practice for Mounting Acoustic ' <br /> Emission Contact Sensors; and ' <br /> E 750-80 Practice for Measuring the Operating ' <br /> Characteristics of Acoustic Emission Instrumentation. <br /> 1 <br /> 1 <br /> 1 <br />