COMPLIANCE INFO_2002-2006 - Laserfiche WebLink

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16.3.2.5. If the sealant did not flow out at the containment sump joint, apply extra sealant and smooth it out all the way around the joint to ensure sufficient and even coverage. (See FIGURE 16-6, C.) 16.3.2.6. For the next application of sealant, apply 1/4 -inch - diameter beads around the inside groove of the containment sump body. (See FIGURE 16-6, D.) 16.3.2.7. Work the containment sump body back and forth, and inspect the sealant for air bubbles. If air bubbles are present, work them out and apply extra sealant material (if needed) so there is sufficient and even coverage. 16.3.2.8. Typically, the sealant will skin over in about 90 minutes. (This varies according to temperature and humidity.) 16.3.2.9. Take care when exiting the containment sump after applying the sealant. 16.3.3. SEALING CONTAINMENT SUMP BODY TO WATERTIGHT TOP 16.3.3.1. To seal the watertight top to the containment sump body, seat the top onto the containment sump body, making sure the top is centered in the channel. (See FIGURE 16-7, A.) CAUTION Take care not to damage the top lip when sealing the watertight containment sump top. 16.3.3.2. Fill the space between the top and the outside edge of the channel with sealant. (See FIGURE 16-7, B.) FIGURE 16-7 16.3.3.3. Apply additional sealant around the top edge to form a filler. (See FIGURE 16-7, B.) 16.3.3.4. Inspect the sealant for air bubbles. If air bubbles are present, work them out and apply extra sealant material (if needed) so there is sufficient and even coverage. 16.3.3.5. Work the sealant so there is a tight "seal" of sealant between the edge of the top and the outside edge of the channel. (See FIGURE 16-7, B.) 16.3.3.6. Typically, the sealant will skin over in about 90 minutes. (This varies according to temperature and humidity.) 16.3.3.7. Take care when exiting the containment sump after applying the sealant. 24 11 16.4. HYDROSTATIC WATER TEST 16.4.1. GENERAL 16.4.1.1. Test the containment sump assembly with water after allowing the time required to set (typically four to five hours). 16.4.1.2. Seal off any piping penetrations and other penetrations found in the containment sump body. 16.4.2. TESTING CONTAINMENT SUMP (NOT WATERTIGHT MODEL) 16.4.2.1. Fill the containment sump with water to a point 6 inches above the collar/containment sump body seam. 16.4.2.2. Mark and record the water level, and check it after one hour. 16.4.2.3. Inspect all joints and penetrations for leaks. 16.4.2.4. If no leaks are found, remove the water and continue the installation process. 16.4.3. TESTING WATERTIGHT CONTAINMENT SUMP WARNING Do not pressurize a watertight containment sump as this could result in death or serious injury. 16.4.3.1. Do not water test the watertight containment sump until after the sealant in the groove at the top of the containment sump has sufficiently set. 16.4.3.2. Fill the containment sump with water to a point above this outer groove at the top of the containment sump (in other words, to the top of the access cover lip). 16.4.3.3. Mark and record the water level, and check it after one hour. 16.4.3.4. Inspect all joints and penetrations for leaks. 16.4.3.5. If no leaks are found, remove the water and continue the installation process. 16.4.4. REPAIRING LEAKS 16.4.4.1. If a leak is found in containment sump joints (top or bottom), mark the spot and drain the containment sump. 16.4.4.2. Dry the leak area both inside and out. 16.4.4.3. Prepare the area by abrading around the leak at least 3 inches in each direction. 16.4.4.4. Apply sealant to the abraded area. 16.4.4.5. Retest after sealant material sufficiently sets up. 16.5. WATERTIGHT COVER INSTALLATION 16.5.1. Inspect the gasket in the groove on the underside of the cover. Brush away any debris and make sure the gasket is clean. 16.5.2. Check the top lip of the opening for nicks or cracks, and clean as necessary. If damage is detected, contact the UST coordinator at the Xerxes plant nearest you.