Where:
MAPCD, i = average inlet mass rate of EtO per hour, lb/hr
CEtO,i = inlet EtO concentration, ppmdv.
Qi = average inlet volumetric flow per hour at standard conditions, dscf/hr
44.05 = molecular weight (MW) of EtO, lb/lb-mole
MW/385.1 * 106 = conversion factor, from ppmv at standard conditions to lb/cf
EAPCD, o = average outlet mass rate of EtO per hour, lb/hr
CEtO,o = outlet EtO concentration, ppbdv.
Qo = average outlet volumetric flow per hour at standard conditions, dscf/hr
MW/385.1 * 109 = conversion factor, from ppbv at standard conditions to lb/cf
Where:
MSCV,n = Theoretical total mass of EtO vented to controls per charge, g (lb) Mcharge = total mass of sterilizer gas charge, g (lb) %E.O.w = weight percent of EtO
Where:
MSCV,n = Total mass of EtO sent to controls per charge Qm = volumetric flow rate, liters per minute (L/min) corrected to 20 °C and 101.325 kilopascals (kPa) (scf per minute (scfm) corrected to 68 °F and 1 atmosphere of pressure (atm)) Tn = time duration of each charge, min n = number of EtO charges %E.O.v = volume fraction percent of EtO MW = molecular weight of EtO, 44.05 grams per gram-mole (g/g-mole) (44.05 pounds per pound-mole (lb/lb-mole)) SV = standard volume, 24.05 liters per gram-mole (L/g-mole) at 20 °C and 101.325 kPa (385.1 scf per pound-mole (scf/lb-mole) at 68 °F and 1 atm).
Where:
MSCV = Total mass of EtO sent to controls per hour, g/hr (lb/hr) MSCV,n = Total mass of EtO sent to controls per charge per chamber, g (lb) Tt = Total time of the performance test, hour n = Total number of charges during testing period f = Portion of EtO use that is assumed to be routed to the control system (0.93 if aeration is conducted in separate vessel; 0.98 otherwise)
Where:
% ER = percent emission reduction MAPCD,i = total mass of EtO per hour to the control device EAPCD,o = total mass of EtO per hour from the control device
40 C.F.R. §63.365