Coal USA Coal Dust Mitigation Update Coal Dust Mitigation Update - PowerPoint PPT Presentation

Coal USA Coal Dust Mitigation Update Coal Dust Mitigation Update Surface Transportation Board – RETAC September 10, 2009 Material from this presentation may not be used or reproduced without prior written consent of the BNSF R il

Rain Impact on Ballast Contaminated w ith Coal Dust 1 Material from this presentation may not be used or reproduced without prior written consent of the BNSF R il

Undercutter Work – Normal Ballast is not Black 2 Material from this presentation may not be used or reproduced without prior written consent of the BNSF R il

Schematic of Typical BNSF/UP Dustfall Schematic of Typical BNSF/UP Dustfall Collector Orin Subdivision Site Collector Orin Subdivision Site Service Road Service Road 5 2 1 4 3 12’ 12’ 35’ 60’ 60’ N Note: Distances from centerline of track will vary slightly due to site geography Western Eastern Track Track 3 Material from this presentation may not be used or reproduced without prior written consent of the BNSF R il

Dustfall Collectors � Measure amount of dust deposited in the railroad right- of-way 4 Material from this presentation may not be used or reproduced without prior written consent of the BNSF R il

Trackside Monitor (TSM) Propeller MP 90.7 TSM Anemometer Dust Monitor Temperature/ Relative Humidity Sensor Data Logger Precipitation Gauge Dustfall Collector 5 Material from this presentation may not be used or reproduced without prior written consent of the BNSF R il

Trackside Monitors � Measures dust emission of each passing train � Locations: � MP 90.7 on Orin Sub � Towers on East and West sides of tracks � Approximately 50% of trains useable � MP 558.2 on Black Hills Sub � Towers on North and South sides of tracks � Approximately 75% of trains useable � MP 693.4 on Big Horn Sub � Data collection only at this time 6 Material from this presentation may not be used or reproduced without prior written consent of the BNSF R il

Post-Processing Post-Processing of of Train Train Data Data � Train Removal Criteria for Compliance Analysis � Additional train (loaded or empty) passing TSM site within 6 minutes � High/Erratic background dust � Bin data into proper wind components � e.g., East dust monitor uses data with westerly wind component � e.g., West dust monitor uses data with easterly wind component 7 Material from this presentation may not be used or reproduced without prior written consent of the BNSF R il

Coal Dust Train Measurement Coal Dust Train Measurement Dust Values for Passing Train at TrackSide Monitor 120 100 Dust Value 80 60 40 20 Train arrives at MP 90.7 0 -60 0 60 120 180 240 300 Time (Seconds) Environmental Train Passage at Background MP 90.5 According to Dust BNSF Train Data 8 Material from this presentation may not be used or reproduced without prior written consent of the BNSF R il

Integrated Dust Value (IDV.2) Integrated Dust Value (IDV.2) Dust Values for Passing Train at TrackSide Monitor 120 Integrated Dust Value Version 2 = 412 100 Dust Value 80 60 40 20 Train arrives at MP 90.7 0 -60 0 60 120 180 240 300 Time (Seconds) Dust Value Threshold = 10 + Background Average Front Diesel: Ignore Rear Diesel: Ignore last Environmental Train Passage at first 30 seconds of Background 15 seconds of dust MP 90.5 According to values once dust signal signal > threshold Dust BNSF Train Data exceeds threshold 9 Material from this presentation may not be used or reproduced without prior written consent of the BNSF R il

Improved Loading Profile Improved Loading Profile Normal Chute Redesigned Chute Flared to 7 ft. wide 5 ft. wide Same height as normal chute Promotes center peaked load Promotes bread loaf shape Allows loading heights 3’ to 4 ‘ Limits height chute can be raised above sill 10 Material from this presentation may not be used or reproduced without prior written consent of the BNSF R il

Impact of Modified Chutes AFTER BEFORE Note Rounded Contour, No Sharp Note Peaked Loads, Sharp Lines, Angles, Flatter Angle of Repose and Steep Angle of Repose and other few irregular surfaces which are irregular surfaces which are susceptible to erosion susceptible to erosion 11 Material from this presentation may not be used or reproduced without prior written consent of the BNSF R il

Field Profile Audits � Monthly unannounced audits � Trains found not in compliance, provide mines � Written report � Photograph � Video of train � Audited 225 trains year to date 12 Material from this presentation may not be used or reproduced without prior written consent of the BNSF R il

RTEPS and Passive Collectors RTEPS typically applied on last car of train with Passive Collector to determine external forcings (Wind Speed/Direction, Precipitation, Ambient Temp/RH, Coal Surface Temp, and Airborne Dust) Passive Collectors applied in sets of 5 – 10 to test effectiveness of dust suppression method compared to control technique 13 Material from this presentation may not be used or reproduced without prior written consent of the BNSF R il

Instrumentation � Rail Transit Emission Profiling System (RTEPS) � Airborne Dust Monitor � Precipitation Gauge � Ambient Temperature/Relative Humidity Sensor � Propeller Anemometer � Infrared Sensor for Coal Surface Temperature � Global Positioning System � Passive Dust Collector (PC) 14 Material from this presentation may not be used or reproduced without prior written consent of the BNSF R il

Nacco Bridge – Undercut 2006 Coal has filtered down to the top of the bridge deck 15 Material from this presentation may not be used or reproduced without prior written consent of the BNSF R il