Permit Appendix C: 40 CFR pt. 63, NESHAP subp. T supplementary information T1: Performance, Monitoring, Recordkeeping and Requirement for Control Devices Control Device Exceedance Performance (*) Monitoring and Recording Requirement Requirements Freeboard The chilled air blanket A The Permittee shall use refrigeration temperature measured at thermocouple or thermometer to device the center of the air monitor the temperature at the blanket, shall not be center of the air blanket during the greater than 30% of the idling mode and record the results on solvent’s boiling point. a weekly basis. Reduced room 1. Ensure the flow or A Controlling room parameters - The draft movement of air across Permittee shall conduct an initial the top of the freeboard monitoring test of the windspeed and area of the solvent of room parameters (i.e. redirecting cleaning machine or fans, closing doors and windows, within the solvent etc.), using the following procedure: cleaning machine a. The windspeed shall be measured enclosure does not within 6 inches above the top of the exceed 50 ft/min at any freeboard area of the solvent time, either by controlling cleaning machine. or b. The direction of the wind current room parameters B an enclosure. by slowly rotating a velometer or similar device until the maximum speed is located. c. Orient a velometer in the direction of the wind current at each of the 4 corners of the machine. 2. Establish and maintain d. Record the reading for each the operating conditions corner and average the values under which the wind obtained at each corner and record speed was demonstrated the average wind speed. to be 50 ft/min. or less. the above procedure, the Permittee shall monitor and record the windspeed on a quarterly basis, and monitor and record the room parameters established during the initial monitoring test on a weekly basis. Partial or total enclosure - The Permittee shall conduct an initial monitoring rest, thereafter monthly monitoring tests of the windspeed as follows: determine the direction of
Permit Appendix C: 40 CFR pt. 63, NESHAP subp. T supplementary information T1: Performance, Monitoring, Recordkeeping and Requirement for Control Devices Control Device Performance Requirement Exceedance (*) Monitoring and Recording Requirements Freeboard refrigeration device The chilled air blanket temperature measured at the center of the air blanket, shall not be greater than 30% of the solvent’s boiling point. A The Permittee shall use thermocouple or thermometer to monitor the temperature at the center of the air blanket during the idling mode and record the results on a weekly basis. Reduced room draft 1. Ensure the flow or movement of air across the top of the freeboard area of the solvent cleaning machine or within the solvent cleaning machine enclosure does not exceed 50 ft/min at any time, either by controlling room parameters or an enclosure. 2. Establish and maintain the operating conditions under which the wind speed was demonstrated to be 50 ft/min. or less. A B Controlling room parameters - The Permittee shall conduct an initial monitoring test of the windspeed and of room parameters (i.e. redirecting fans, closing doors and windows, etc.), using the following procedure: a. The windspeed shall be measured within 6 inches above the top of the freeboard area of the solvent cleaning machine. b. The direction of the wind current by slowly rotating a velometer or similar device until the maximum speed is located. c. Orient a velometer in the direction of the wind current at each of the 4 corners of the machine. d. Record the reading for each corner and average the values obtained at each corner and record the average wind speed. the above procedure, the Permittee shall monitor and record the windspeed on a quarterly basis, and monitor and record the room parameters established during the initial monitoring test on a weekly basis. Partial or total enclosure - The Permittee shall conduct an initial monitoring rest, thereafter monthly monitoring tests of the windspeed as follows: determine the direction of