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Award Bid - 2024 Sewer and Manhole Rehabilitation Proj No. 122-019 - Visu-Sewer, LLC
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Award Bid - 2024 Sewer and Manhole Rehabilitation Proj No. 122-019 - Visu-Sewer, LLC
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7/23/2024 1:30:27 PM
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7/23/2024 1:29:29 PM
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Board of Public Works
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Projects
Document Date
7/23/2024
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CLEAN UP AFTER MIXING <br />Good housekeeping in the resin mixing and wet out areas is essential in order to avoid loss of <br />material and major mechanical problems with the pumps and associated valves. Catalyzed resin <br />left in pumps, hoses and vessels continues to cure and will eventually get rock hard. If the <br />temperature in the mixing area is high, this process will be accelerated. The purpose of good <br />cleaning habits is to avoid mixing partially gelled chunks of resin with freshly catalyzed resin that <br />would be put into a liner. Gelling particles or chunks of resin act like tiny hot spots that could spread <br />throughout the tube and result in the loss of a liner before installation has been completed. In <br />addition, keeping clean equipment also allows one to change between different resin or cure <br />systems without having to worry about cross contamination that could affect liner curing and/or <br />quality. <br /> <br />If mixing directly in 55-gallon drums tip each drum up-side-down to thoroughly drain the resin. <br />This will help with drum recycling or disposal, as well as utilizing all the resin available. <br />Thoroughly drain all hoses and transfer pumps of catalyzed resin. As part of a regular maintenance <br />program, the diaphragm pump should be broken down on eek <br />and completely cleaned to avoid resin build up on the diaphragm and the balls. <br /> <br />
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