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15.4.2.SETTING THE LEVEL OF THE MONITORING FLUID 15.4.4.TRUCHEK® 15.4.2.1.After backfilling and placement of top slab is 15.4.4.1.If a TRUCHEKO test is required after installation,follow completed,check the level of the monitoring fluid in the the procedures in the Xerxes TRUCHEK°brochure. reservoir.(See SECTION 15.4.3. if using an electronic monitoring system.) 15.4.4.2.After this test,reset the monitoring-fluid level to a position based on the product level.(See SECTION 15.4.2.and 15.4.2.2.The monitoring fluid should be set to a depth of 7 inches SECTION 15.4.3.) in the reservoir.Add or remove monitoring fluid to reach this depth. • 15.4.2.3.The level of the monitoring fluid may fluctuate due to SUMPS such things as: 16.1.GENERAL • groundwater fluctuation, 16.1.1.The containment sump is a termination point for secondary • tank filling and emptying, piping systems.It is designed to be monitored continuously for • product temperature variation. leaks using electronic sensors.Consult federal,state and local codes and regulations to ensure proper monitoring compliance. 15.4.3.PROBE INSTALLATION 15.4.3.1. If the tank contains product,stick the tank and set the A WARNING monitoring-fluid level based on the product level.(See Points 15.4.3.4., 15.4.3.5.and 15.4.3.6.) The containment sump system is a confined space,which may contain hazardous vapors.If work is to be performed 15.4.3.2.The probe must remain in contact with the tank top at inside the sump,test the atmosphere inside and,if necessary, all times.Do not raise the probe off the tank to meet the vent the space to prevent the development of vacuum or monitoring-fluid level.Add or remove monitoring fluid to change pressure.Failure to do so could result in death or serious the level on the sensor.(See FIGURE 15-2.) injury. WARNING Top Slab Use air-powered tools to prevent shock,fire or explosion / (by others) from flammable liquids and vapors.Failure to do so could / result in death or serious injury. Street Box and Electrical Vent Reservoir/ Hookup Standpipe (by others) A CAUTION Standpipe Always wear gloves when handling containment sump (by others) components,and always wear eye protection when Sensor Cable grinding,cutting and attaching the sump unit.Failure to do so may result in minor or moderate injury. ksReservoir Sensor Monitoring-Fluid Level CAUTION Tank Rib Do not drop the containment sump assembly components (cut away for or allow the sump body to roll.Since high winds could ensor placement) damage the sump components,protect and secure all pieces if windy conditions arise.Failure to follow this FIGURE 15-2 caution may result in minor or moderate injury. 15.4.3.3.The typical probe has two sensors(a high-fluid level CAUTION and a low-fluid level).While the probe is upright,locate the Failure to follow these instructions may cause water-seal midpoint between the two sensors, failure,and may result in property damage. 15.4.3.4.If the tank is between empty and 1/4 full,set the monitoring-fluid level at about 1 -1 112 inches below the 16.1.2.Visually inspect all pieces and parts to make sure that no midpoint of the two sensors. shipping or handling damage has occurred.If any components are missing,contact the UST coordinator at the Xerxes plant 15.4.3.5.If the product level is between 1/4 and 1/2 full,set the nearest you.(See FIGURE 16-1 or FIGURE 16-2.) monitoring-fluid level to the midpoint of the two sensors. 15.4.3.6. If the product level is between 1/2 full and full,set the 16.1.3.Do not attempt any repairs to damaged containment monitoring-fluid level to about 1 -1 1/2 inches above the sump components. If damage is detected,contact the UST midpoint of the two sensors. coordinator at the Xerxes plant nearest you. 21