The document discusses combustible dust, providing information on what it is, who regulates it, and how explosions can be prevented. It defines combustible dust as fine particles that can explode when suspended in air. It outlines the key regulatory bodies that oversee combustible dust safety, including OSHA and NFPA. It also provides examples of dust explosions that have occurred in industrial facilities and gives guidance on engineering and housekeeping measures shops can take to prevent combustible dust explosions.

1. WMMA/WILF – February 2010 Combustible Dust… an Explosive Issue Presented by Jamison Scott [email_address] www.airhand.com More info on combustible dust: http://www.airhand.com/combustibledust.asp

3. What is It? Air Handling Systems - Copyright 2010 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.

5. What is It – Classic Fire Triangle Remove any one element eliminates the possibility of fire. Air Handling Systems - Copyright 2010 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 2010 For informational use only

9. Who’s 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 2010 For informational use only

10. Can it happen in my shop? (2) www.woodchuckles.com Air Handling Systems - Copyright 2010 For informational use only

18. Appendix A Combustible Dust in Industry: Preventing and Mitigating the Effects of Fire and Explosions Air Handling Systems - Copyright 2010 For informational use only

19. Appendix B Hazard Alert: Combustible Dust Explosions. OSHA Fact Sheet, (2008, March) Air Handling Systems - Copyright 2010 For informational use only

20. Appendix C Hazard Communication Guidance for Combustible Dusts OSHA 3371-08 2009 Air Handling Systems - Copyright 2010 For informational use only

21. Appendix D OSHA ANPR Air Handling Systems - Copyright 2010 For informational use only

22. Appendix E Status Report on Combustible Dust National Emphasis Program Air Handling Systems - Copyright 2010 For informational use only

23. Appendix F Congress Air Handling Systems - Copyright 2010 For informational use only

24. Appendix G FM Global – an Insurer’s View Air Handling Systems - Copyright 2010 For informational use only