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12.2 Plating Operations <br />Site 2010quantity (lb) <br />SNUCA 2,781 <br />Plating Baths Rinsewater from Off-site <br />Metal Substrates Plating Operations disposal <br />CWC 792 <br />FIGURE 111.13.2. PLATING OPERATIONS WASTE GENERATION PROCESS <br />The rinsewater from the Plating Operations in B943 is normally treated in a closed <br />loop system that removes spent materials from process wastewater. The rinsewater is <br />reclaimed through distillation and introduced back into the plating operations. In <br />2010 the entire system was required to be drained for a tank assessment. <br />SOURCE REDUCTION/POLLUTION PREVENTION EVALUATION I <br />Descriotion of Measure: <br />None identified. This was a one time event and should not have to be performed again. <br />The rinsewater will be treated in a closed loop system that removes spent materials <br />from process wastewater and introduced back into the plating operations. <br />September 1, 2011 SB 14 Plan <br />64 <br />IV. CATEGORY C Waste Streams <br />Category C waste streams are defined as "Wastes that are classified as <br />extremely hazardous wastes." <br />CWC 131: Aqueous solution (2 <pH < 12.5) containing reactive anions <br />Site <br />2010 quantity (lb) <br />LLNL <br />1 109 <br />1.1 <br />Aqueous etching solution B391 <br />Site <br />2010 quantit (lb <br />LLNL <br />109 <br />D39I Raw Materials: <br />EtNent <br />optic <br />Otic etChln Product: <br />g—�Etched <br />—� process optic <br />Spent etchant <br />Offsite <br />dispacal <br />FIGURE W.I.I. B391 ETCHING WASTE GENERATION PROCESS <br />This waste stream is from National Ignition Facility (NIF) etching operations performed <br />on new optics received from the vendor. The process has been optimized to generate the <br />minimal amount of waste while producing the high quality optics required. For example, <br />etchant is only changed out after the solution is completely spent after 20 optics. About <br />40 gallons per year of waste is generated from this process. Approximately 216 pounds <br />of this waste stream was identified as CWC 135. <br />In 2009, NIF started implementation of an optics repair process to extend the life of the <br />optics. This operation continued to expand in 2010 and reduces both the need to acquire <br />new replacement optics and the chemicals used to process them. <br />SOURCE REDUCTION/POLLUTION PREVENTION EVALUATION <br />Description of Measure: <br />LLNL plans to continue existing best management practices to minimize this waste <br />stream. No other source reduction measures are planned at this point. <br />September 1, 2011 SB 14 Plan <br />65 <br />