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4 <br /> i <br /> Coca-Cola Enterprises-West <br /> USTEC Job No. 90054.03 <br /> o Exhaust stack temperature above 650°Fahrenheit. <br /> o Loss of process airflow. <br /> t o Loss of compressed air pressure. <br /> i <br /> o LEL levels in the process gas above 28%. <br /> ! o High bed back-pressure. <br /> { <br /> o High water level in knock-out pot. <br /> includes thermocou les with values that are visible through a data access panel. <br /> r Instrumentation in des p <br /> t The center bed thermocouple is connected to a strip chart recorder to show maintenance of bed <br /> F <br /> 17 <br /> temperature above 1,800° Fahrenheit. <br /> 3 5.4.11 Ekddi� t;�onat Equipment <br /> �+ Other components include an air compressor, knock-out pot,air solenoid valves,air silencers, <br /> Y�4 <br /> compressed air filters and regulators,and pressure switches. <br /> 5.4.12 Thermal Oxidizer <br /> The thermal oxidizer used with the vapor extraction system will operate 24 hours a day,and is <br /> designed to maintain a bed temperature of no less than 1,800° Fahrenheit at which point <br /> destruction efficiency is no less than 95%. Assuming a flow rate of 240 cfm and an inlet <br /> hydrocarbon concentration initially of 100,000 ppb decreasing to 10,000 ppb after several days, <br /> the following emission levels of total petroleum hydrocarbons could be anticipated. <br /> i <br /> f iz" Maximum Effluent concentrations: <br /> Maximum Emission hate(lb/hr)_ <br /> - Contaminant Concentration (mg/L) x Air Flow (cfm)x 0.0037 x Efficiency <br /> Where 0.0037= (0.001 g/mg) x (0.002 lb/g) x (28.3 1/cf) x (60 min/hr) <br /> and Efficiency = 100% -95% / 100% <br /> Therefore,at 100 ppm the maximum emissions would be: <br /> i-! <br /> i 23 <br /> Y ` 4 <br />