Combustible Dust Dollars & Sense Of Going Green

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Combustible Dust information for woodworkers

Text of Combustible Dust Dollars & Sense Of Going Green

  • 1. The Dollars & Sense of going green Combustible Dust an Explosive Issue Presented by Jamison Scott [email_address] www.airhand.com www.airhand.com More info on combustible dust: http://www.airhand.com/combustibledust.asp
  • 2. Combustible Dust
    • What is it?
        • http://www.youtube.com/watch?v=Va1sJF5_f-8 http://www.youtube.com/watch?v=yRw4ZRqmxOc&NR=1
    • Who is in charge?
    • Can it happen in my shop?
    • Prevention
    Air Handling Systems - Copyright 2009 For informational use only
  • 3. What is It? Air Handling Systems - Copyright 2009 For informational use only Combustible dusts are fine particles that present an explosion hazard when suspended in air in certain conditions. Source: OSHA Fact Sheet.
  • 4. What is It?
    • Combustible Fine Particles:
      • Deflagrable Wood Dust 420 micons (.425 mm, 425 um micrometers, .0165) or smaller (having moisture content of less than 25%). Material that will pass through U.S. No. 40 Standard Sieve. Size of fairly coarse sand.*
    • 1/32 of dust thickness of dime.
    • OSHA continues crackdown on combustible dust hazards Published: August 11, 2009, By Rich Christianson http://www.iswonline.com/ArticleLanding/tabid/67/Default.aspx?tid=1&contentid=824632&issueid=743
    Air Handling Systems - Copyright 2009 For informational use only *Source NFPA 3.3.24.2
  • 5. What is It Classic Fire Triangle Remove any one element eliminates the possibility of fire. Air Handling Systems - Copyright 2009 For informational use only
  • 6. What is It Dust Explosion Pentagon Remove any one element prevents explosion, but not necessarily fire!* *the concentration of suspended dust must be within an explosible range, lowest amount of dust in air that will explode, referred to as Minimum Explosible Concentration (MEC) (1) Air Handling Systems - Copyright 2009 For informational use only
  • 7. What is It Primary, Secondary
    • Primary Issues
      • Explosion
    • Secondary Issues
      • Disturbing of dust on structural supports can create a secondary source of fuel
      • Video Clip: http://www.chemsafety.gov/videoroom/detail.aspx?VID=33
    Air Handling Systems - Copyright 2009 For informational use only
  • 8. Whos in charge
    • Regulatory Alphabet of Organizations & Agencies
    • OSHA - Occupational Safety and Health Administration
      • July 2005 Combustible Dust in Industry: Preventing and Mitigating the Effects of Fire and Explosions
      • February 2008 Imperial Sugar, dust explosion and subsequent fire at a sugar refinery in Port Wentworth, Georgia, caused 14 deaths and left many others seriously injured.
      • March 2008 - Hazard Alert: Combustible Dust Explosions. OSHA Fact Sheet
      • April 2009 See Congress below
      • 2009 - Hazard Communication Guidance for Combustible Dust OSHA 3371-08 2009
      • October 21, 2009 - Combustible Dust ANPR
      • October 2009 Status Report on Combustible Dust National Emphasis Program
    • Congress
      • April 2008 - The House passes the Worker Protection Against Combustible Dust Explosion and Fire Act, H.R. 5522 by a vote of 247-165 and referred to the Senate.
      • Feb 2009 H.R. 849: Worker Protection Against Combustible Dust Explosions and Fires Act of 2009. Same as H.R. 5522. Status: Refferred to Committee. Since OSHA is taking action, the bill will probably NOT make it out of committee.
    • NFPA National Fire Protection Association
      • NFPA 68: Standard on Explosion Protection by Deflagration Venting.
      • NFPA 654: Standard for the Prevention of Fire and Dust Explosions from the Manufacturing, Processing, and Handling of Combustible Particulate Solids. NFPA 654: Standard for the Prevention of Fire and Dust Explosions from the Manufacturing, Processing, and Handling of Combustible Particulate Solids. Recommendations commonly referred to Fire Local Fire Officials .
    • US Chemical Safety Board
      • October 6, 2009 - http://www.chemsafety.gov/videoroom/detail.aspx?VID=33 (minutes 3-5:30)
    • Insurance Companies
      • FM Global - Prevention and mitigation of combustible dust
    Air Handling Systems - Copyright 2009 For informational use only
  • 9. Whos REALLY in charge Sugar Refinery Ignored Explosive Dust Before Blast September 25, 2009 by Rruss Bynum, Associated Press Writer http://www.impomag.com/scripts/ShowPR.asp?RID=11927&CommonCount=0 Air Handling Systems - Copyright 2009 For informational use only
  • 10. Can it happen in my shop? (2) www.woodchuckles.com Air Handling Systems - Copyright 2009 For informational use only
  • 11. Can it happen in my shop?
    • We will assume you are not Fred and you already have a dust collection system.
      • Dust Collector.
      • Hanging Air Filter for ambient dust.
      • Shop Vac or Vac Kit which attaches to your dust system for everything else.
    • How big is your shop?
      • Combustible Dust - Size of shop doesnt matter, size of dust does.
      • NFPA 664 larger than 5,000 sq ft or collector greater than 1500 cfm
      • OSHA can inspect any facility (reduced FINES for smaller shops).
    • Housekeeping
      • Essential in any size shop - Less than 10 employees maybe safe from OSHA recording standards, but not Fire Marshall or Insurance Co.
      • Ever have that cloud of dust in your shop from changing a bag or emptying a drum on a collector?
    Air Handling Systems - Copyright 2009 For informational use only
  • 12. Can it happen in my shop?
    • Firefighters put out sawdust fire at Cole Hardwood
    • September, 12 2009 LOGANSPORT, IN No injuries were reported fire that damaged a silo. The reported 42,000-cubic-foot silo held sawdust that was burned as fuel to generate steam heat for the companys dry kilns. The newspaper quoted co-owner of the lumber company, as saying that safety valves integrated into the dust collection system prevented a potential serious explosion . Im just happy no one got hurt,. Source: http://www.iswonline.com/IndustryNewsLanding/tabid/61/Default.aspx?tid=2&ContentID=834779
    • Dust Causes Plant Fire In Mason City
    • September 23, 2009, MASON CITY, Iowa (AP) Authorities say no one was injured in a small fire that forced the evacuation of a door manufacturing plant in Mason City. Fire Capt. says sawdust caught fire and the spark was probably caused by some machinery. http://www.chem.info/ShowPR~PUBCODE~075~ACCT~0000100~ISSUE~0909~ORIGRELTYPE~TJI~RELTYPE~PR~PRODCODE~0000~PRODLETT~JY.htm
    • Local business evacuated for fire November 3, 2009 WQOW TV News 18 - Eau Claire,USA "The fire was contained to the dust collection system, caused probably by a spark, some sort of spark from one of the motors in the system. http://www.wqow.com/Global/story.asp?S=11436558
    Air Handling Systems - Copyright 2009 For informational use only
  • 13. Prevention (based on OSHA ANPR)
    • Hazard Assessment
    • Engineering Controls
    • Housekeeping
    • Building Design
    • Explosion Protection
    • Operating Procedures
    • Worker Training
    Source OSHA ANPR Air Handling Systems - Copyright 2009 For in