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C ADVANCED LEAK DETECTION <br /> PROCEDURE <br /> A Bravo Systems Exclusive detection method <br /> C.1 - 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 /> 1ZM - <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 /> K;u <br /> u-sW 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 /> _jjrjjA <br /> consistently. <br /> PAY CLOSE AND SPECIAL ATTENTION TO FIELD-INSTALLED <br /> A CRITICAL PENETRATION FITTINGS and FRP JOINTS ON TANK SUMPS. <br /> THESE ARE COMMON LEAK POINTS. <br /> ACAUTION <br /> Even though Bravo DoubleWall product corners and edges are thicker than the rest of the <br /> Containment sump, These areas recieve the most supceptable to physical damage by Installing <br /> Contractors. You would do well to be extremely careful with these DoubleWall products while storing, <br /> moving, transporting and Installing these critical environmental components. <br /> 6 ii-ALDP-D-AB-2007 <br />