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0 <br />C) ADVANCED LEAK DETECTION <br />PROCEDURE <br />A Bravo Systems Exclusive detection method <br />CA - Clear debris from the top open area of the DoubleWall Product and ensure that the <br />interior walls are clean of debris and visible. <br />C.2 - Apply Vacuum to the sealed interstitial space with the Venturi Vacuum Assembly, and <br />generate 20"-30" of vacuum for a MINIMUM of Five [ 5 ] Minutes. <br />CHECK WITH YOUR EQUIPMENT MANUFACTURERS <br />INSTALLATION MANUALS FOR INSTALLATION <br />GUIDELINES AND/OR EQUIPMENT LIMITS REGARDING <br />VACUUM AND PRESSURE LEVELS. <br />C.3- As stated in your Instructions, the liquid level is deliberately not filled to the very top <br />of the interstitial space. This pocket of air is necessary to visually check the topmost level of <br />liquid all the way around the Sump for indication of a leak. <br />C.4- Visually inspect the interior walls for signs of trailing (very small) bubbles floating to <br />the top of the liquid level within the interstitial space. <br />These air bubbles are visible within the vertical and horizontal <br />channels of the walls. For Tank Sumps look below the reducer. <br />On the top hat reducer of a Tank Sump, any bubbles will burp <br />consistently. <br />PAY CLOSE AND SPECIAL ATTENTION TO FIELD -INSTALLED <br />PENETRATION FITTINGS and FRP JOINTS ON TANK SUMPS. <br />THESE ARE COMMON LEAK POINTS. <br />t <br />Even though Bravo DoubleWall product corners and edges are thicker than the rest of the <br />Containment sump, These areas are most susceptible to physical damage by Installing Contractors. <br />You would do well to be extremely careful with these DoubleWall products while storing, moving, <br />transporting and Installing these critical environmental components. <br />9 ii -B8000 -9000 -DW -11B <br />