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Opening of Bids - 2024 Sewer and Manhole Rehabilitation Proj No. 122-019 - Visu-Sewer
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Opening of Bids - 2024 Sewer and Manhole Rehabilitation Proj No. 122-019 - Visu-Sewer
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7/9/2024 2:49:57 PM
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Board of Public Works
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Projects
Document Date
7/9/2024
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SPECIFIC MIXING INSTRUCTIONS (Inline Mixing) <br />• Store the resin in the recommended temperature range as per the resin manufacturer’s <br />guidelines. Before mixing any chemicals measure and record the resin temperature and <br />the time. <br /> <br />• Start resin pump and circulate resin within the bulk storage system. <br /> <br />• Weigh the calculated amount of each catalyst. Be aware that the Perkadox 16 is a <br />powder and must first be dissolved before being introduced into the resin. Styrene <br />monomer has been found as a suitable solvent to accomplish this task. In order to fully <br />dissolve the Perkadox 16, use styrene at a 1:1 ratio by weight of Perkadox 16. <br /> <br />• Mix the catalysts and dye in an appropriate container until thoroughly mixed. For the <br />catalyzation, add the chemicals separately in the following sequential order: <br /> <br />• Styrene Monomer / Trigonox KSM or other secondary catalyst <br /> <br />• Perkadox 16 / or other primary catalyst <br /> <br />• 1 cc of dye per pound of Perkadox 16 <br /> <br />After the Perkadox 16/styrene monomer/Trigonox KSM solution has been mixed thoroughly, <br />filter the solution through an appropriate screen and pour into the catalyst hopper. <br /> <br />Start the catalyst pump in the re-circulation mode. <br /> <br />Take the time vs weight calibration sample as per manufacture’s <br />directions. Zero the resin totalizer. <br />Set the catalyzation rate (ml / min) as per manufacturer’s <br />recommendations). Turn switch from Re-circulation to Dispense. <br />Take a resin sample every 500 pounds for a gel test (see RESIN SAMPLING & GEL TIME TESTING). <br /> <br />SPECIFIC MIXING INSTRUCTIONS (Drum Mixing) <br /> <br />• Store the resin in the recommended temperature range as per the resin manufacturer’s <br />guidelines. Before mixing any chemicals, measure and record the resin temperature and <br />the time for that drum. <br /> <br />• Set the mixing blade in the drum to a depth of approximately three-fourths (¾) of the way <br />to the bottom. Adjust the rotational speed of the mixing shaft to establish a circular vortex <br />in the resin that extends approximately one-fifth (1/5) of the way down the shaft from the <br />top of the resin. Do not allow the surface of the mixing blade to be exposed by generating <br />a strong vortex, because this will entrain air bubbles into the resin. If the maximum speed <br />does not allow for an adequate vortex then the blade diameter should be increased. <br /> <br />• Weigh the calculated amount of each catalyst. Be aware that the Perkadox 16 is a <br />powder and must first be dissolved before being introduced into the resin. Styrene <br />monomer has been found as a suitable solvent to accomplish this task. In order to fully <br /> <br />
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