LOCAL EXHAUST VENTILATION EVALUATION SUMMARY COMMAND: MCCS DATE: 17 December 2014 BUILDING/LOCATION: 2080, Room 116 TYPE: Movable Welding Exhaust Hood SHOP: Auto Skills Shop Measurement Measurement Location Test Type Top Middle Bottom Face Velocity, vertical 1340 fpm 1660 fpm 1560 fpm Adequate capture Face Velocity, Left Center Right horizontal 1780 fpm 1660 fpm 1560 fpm Area of hood face: 2.67 ft2 Calculated volumetric flow (Q): 4,202 cubic feet per minute (cfm) Required volumetric flow (Q) at 16”: 1,916 cfm Results: When hood is positioned 16” or closer to the source, velocity is sufficient for the capture of welding fumes of moderate toxicity Note: fpm=feet per minute LOCAL EXHAUST VENTILATION EVALUATION SUMMARY COMMAND: MCCS DATE: 17 December 2014 BUILDING/LOCATION: 3167, Wood Shop TYPE: Stationary Woodworking Equipment SHOP: Facilities Maintenance Measured Required Meets Volumetric Volumetric Equipment Required Test Comments Flow Rate Flow Rate Standard? (cfm) (cfm) All other component blast 1277 545 Y Adequate Capture gates CLOSED during Rockwell Delta measurement 10” UniSaw All other component blast 521 545 N Adequate Capture gates OPEN during measurements All other component blast gates CLOSED during measurement. Although the available dust capture hood meet specified requirements, it 504 430 Y Adequate Capture was located to far from the Delta 12” Radial saw blade to provide adequate Arm Saw capture. The blade shroud ventilation available on the saw was not connected to the ventilation system. All other component blast 398 430 N Adequate Capture gates OPEN during measurements All other component blast 109 100 Y Adequate Capture gates CLOSED during Milwaukee 12” measurement Saw All other component blast 47 100 N Adequate Capture gates OPEN during measurements
LOCAL EXHAUST VENTILATION EVALUATION SUMMARY COMMAND: MCCS BUILDING/LOCATION: 2080, Room 116 SHOP: Auto Skills Shop DATE: 17 December 2014 TYPE: Movable Welding Exhaust Hood Measurement Type Measurement Location Test Face Velocity, vertical Top Middle Bottom Adequate capture 1340 fpm 1660 fpm 1560 fpm Face Velocity, horizontal Left Center Right 1780 fpm 1660 fpm 1560 fpm Area of hood face: 2.67 ft2 Calculated volumetric flow (Q): 4,202 cubic feet per minute (cfm) Required volumetric flow (Q) at 16”: 1,916 cfm Results: When hood is positioned 16” or closer to the source, velocity is sufficient for the capture of welding fumes of moderate toxicity Note: fpm=feet per minute LOCAL EXHAUST VENTILATION EVALUATION SUMMARY COMMAND: MCCS BUILDING/LOCATION: 3167, Wood Shop SHOP: Facilities Maintenance DATE: 17 December 2014 TYPE: Stationary Woodworking Equipment Equipment Measured Volumetric Flow Rate (cfm) Required Volumetric Flow Rate (cfm) Meets Required Standard? Test Comments Rockwell Delta 10” UniSaw 1277 545 Y Adequate Capture All other component blast gates CLOSED during measurement 521 545 N Adequate Capture All other component blast gates OPEN during measurements Delta 12” Radial Arm Saw 504 430 Y Adequate Capture All other component blast gates CLOSED during measurement. Although the available dust capture hood meet specified requirements, it was located to far from the saw blade to provide adequate capture. The blade shroud ventilation available on the saw was not connected to the ventilation system. 398 430 N Adequate Capture All other component blast gates OPEN during measurements Milwaukee 12” Saw 109 100 Y Adequate Capture All other component blast gates CLOSED during measurement 47 100 N Adequate Capture All other component blast gates OPEN during measurements
2015%20MCCS%20Periodic%20Industrial%20Hygiene%20Survey%20Report.docx