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Preparation For Filling (con't) Notes: 1. Since smaller capacity 6' and 8' diameter tanks only have 4" fitting in fiberglass reservoir, place one standpipe in reservoir fitting. 2. 4' diameter tanks have no reservoir. Place a 4" riser (contractor supplied) into 4" annular space fitting. Filling with Liquid CAUTION: • The liquid to fill the cavity must be gravity fed by pour- ing liquid into the standpipe. • A water hose may be used only if it is not screwed or attached to any of monitoring fittings. • Do not connect a pressurized hose directly to the moni- toring fitting or you will over -pressurize the cavity and could cause tank damage. DO • If the tank is sloped, fill annular space from low end of sloped tank. • Continue to fill cavity with water until liquid begins to overflow standpipes. • Refill cavity through the fill standpipe. After Filling is Complete • Disconnect standpipe at the monitoring fitting. ❑ Replace and tighten fitting plug. • Standpipe in reservoir remains connected to reservoir monitoring fitting (annular space fitting for 4' tanks). • Gravity fill cavity and remaining standpipe in reservoir until liquid level in standpipe is at least 2' higher than tank top. Testing • Continue refilling to the 2' level on the standpipe until the liquid level stabilizes (less than I" drop in 4 hours). Testing (con't) • Ifbackfilling after filling annular space, thoroughly check outer tank for leaks. ❑ An exterior leak detected before backfilling is simple to repair. ❑ Do not backfill a tank with a known or suspected leak in the outer wall. Note: In the unlikely event a tank leak is discovered, call Fluid Containment Field Service, number on page 2. • Remove a primary tank fitting plug and inspect the inner tank for any signs of liquid, which could indicate an in- ner wall leak. • After the liquid level has stabilized: ❑ Disconnect the remaining fill standpipe in reservoir. • Place permanent (4" recommended) riser pipe in reser- voir fitting (4" riser is required in annular space fitting for 4' tanks) to grade. Check reservoir liquid level by inserting a dipstick in the reservoir riser pipe using wa- ter fmder paste. • Determine if reservoir is '/, full by using the following reservoir liquid level measurements. Tank Diameter Reservoir Liquid Level Measurement 4' s" 6' 4" g', lo'* 4" lo'** 9" * 10,000, 12,000, 15,000 and 20,000 gallon tanks only. **25,000 and 30,000 gallon tanks only. Additional fluid may be added, if necessary, so that the fi- berglass reservoir is %: full. C5. Fiberglass Reservoir Sensor Monitoring Liquid Level in Fiberglass Reservoir • Periodically, by using a dipstick. • Continuously, by using optional reservoir sensor (in con- junction with an optional electronic control panel). ❑ Monitoring sensor is placed into reservoir (annular space fitting for 4' tanks) through a 4" diameter riser pipe from grade. �_S_ AbOM ASID 4� Flntl•CM•11 IS