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i <br /> 7 <br /> L <br /> ZAP ENERGY <br /> SE Corner Prep Room Chemical Analysis <br /> Chemical Storage Plan: <br /> • All bottles and containers will be closed and stored in the proper cabinet when not <br /> in use. <br /> • Any container that is use will only be opened to allow for dispensing. <br /> • Volumes of chemicals will be limited to only those that are needed. Common <br /> solvents such as IPA and Acetone are kept to a minimum through vendor managed <br /> inventory and just in time delivery. <br /> • In use chemicals, will be kept to a minimum and where feasible covered to limit <br /> evaporation. <br /> Summary of Solvents Normally Used <br /> Anticipated solvent use in the SE Corner Prep Room corresponds to housekeeping tasks <br /> typically involving small volumes (<10 mL) of solvent dispersed onto lab wipes or paper <br /> towels. Around 5 mL or 4 g of solvent is dispensed per wipe (the solvents of interest all have <br /> densities near p=0.8 g/mQ. Larger open volumes of solvent may be held in Griffin-style <br /> beakers having internal diameters up to 4". In all cases, solvents will be dispersed from <br /> Laboratory wash bottles following standard laboratory practices. The room's internal <br /> volume (13,440 cf.) and baseline ventilation rate (115 cfm) ensure that any resulting solvent <br /> vapor remains at a concentration far below 25% of its LEL and below 1% of its LC50. <br /> The tables on the following pages outline the progression of logic to establish first the <br /> Limiting case scenario (1% of LC50).The next table will establish evaporation rates in <br /> various size containers that could possibly be used.Then, the final solvent table shows the <br /> number of doses that would have to be used at one time to hit the upper threshold limits. <br /> Zap can say with certainty that we will never approach the final limits of 47 doses of <br /> Acetone, 36 doses of Ethanol, and 38 doses of Isopropanol at a time. <br /> There is a table that shows the volume of lithium required to generate enough hydrogen to <br /> hit the upper 25%LFL limit. We anticipate maximum 100 grams of lithium here, which is <br /> well below the 5.2 lbs that would trigger this limit. <br />