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1 <br /> 1C) ADVANCED LEAK DETECTION <br /> PROCEDURE <br /> A Bravo Systems Exclusive detection method <br /> ' C.1 - Clear debris from the top open en area of the DoubleWall Product and ensure that the <br /> 1 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 /> 1 generate 20"-30" of vacuum for a MINIMUM of Five [ 5 ] Minutes. <br /> 1 CHECK WITH YOUR EQUIPMENT MANUFACTURERS <br /> INSTALLATION MANUALS FOR INSTALLATION <br /> A WA Haft N& B I &N&G GUIDELINES AND/OR EQUIPMENT LIMIT-_'' � ' <br /> 1 VACUUM AND PRESSURE LEVELS. <br /> 1 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 /> 1 'squid 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 /> 1 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 Sumps any bubbles will burp <br /> consistently. <br /> PAY CLOSE AND SPECIAL ATTENTION TO FIELD-INSTALLED <br /> PENETRATION FITTINGS and FRP JOINTS ON TAt1 <br /> THESE ARE COMMON LEAK POINTS. <br /> JAN 18 2018 <br /> �,��1 Aral J� r <br /> Liri►AUT E. I ��?9�A1` 1T, ^�ThsAl.ili <br /> ' Even though Bravo DoubleWall product corners and edges are thicker than the rest of the <br /> Dontainment sump, These areas are most susceptible to physical darnage 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 /> 1 9 ii-B8000-9000-DVI-11 B <br />