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John Astad

Wet dust collection system eliminates duct fire hazard at Scott tissue mill | Pulp & Pa... - 0 views

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    Excellent article that I highly recommend for all to read! The importance of addressing combustible dust related fires is highlighted here. Do you have spark detection and flame suppression as part of your dry dust collector system?
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    Excellent article published in Pulp & Paper Oct 2000 by Mark Williamson. The importance of addressing combustible dust related fires is highlighted here. Do you have spark detection and flame suppression as part of your dry dust collector system?
John Astad

OSHA Combustible Dust Citation - 0 views

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    Additional safety hazards include the lack of spark detectors or suppression systems to minimize fire and explosion hazards in ventilation systems that collect combustible wood and metal dust; allowing combustible dust to accumulate
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    Is your facility using best engineering practices as outlined in the NFPA combustuble dust standards such as spark detection and flame suppression?
John Astad

OSH Answers: 4-Working Safely with Aluminum Powder dust explosion hazards - 0 views

  • What is the American Conference of Governmental Industrial Hygienists (ACGIH) recommended exposure limit for aluminum powder (uncoated)
    • John Astad
       
      I'd like to thank Tracey Kelly, Safety Consultant in Ireland for sharing this so others in the ComDust network can gain an added awareness on the hazards of Al dust
  • he hazard increases as the aluminum particle size decreases.
    • John Astad
       
      Ignition sensitivity decreases and explosion severity increases. An interesting inverse relationship
  • Explosions of aluminum dusts have occurred in industry.
    • John Astad
       
      Very destructive explosions. T
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  • MAXIMUM RATE OF PRESSURE RISE:
    • John Astad
       
      It's interesting to note that the resueable Solid Rocket Boosters (SRB) of the Space Shuttle utilize over 300,000 pounds of aluminum dust to launch the vehicle into space.
  • MAXIMUM EXPLOSION PRESSURE
    • John Astad
       
      Explosive Severity (Kst) increases as the Al dust size decreases.
  • MINIMUM CLOUD IGNITION ENERGY:
    • John Astad
       
      Notice how the minimum ignition energy (MIE) required for ignition decreases as the AL dust size decreases. Static electricty (ESD) hazard here
  • Use an explosion-proof vacuum equipped with high efficiency filter(s).
    • John Astad
       
      Note explosion proof vacumns only for use in Hazardous (Classified) Locations Class ll . NFPA 70 Article 500 is an excellent follow-up resource.
  • Material Safety Data Sheet.
    • John Astad
       
      The majority of MSDS's do not have the important ignition sensitivity and expslosion severity data. Does yours?
  • may also be required.
    • John Astad
       
      Should always be requred. Are personnel wearing Flame Resistant Clothing (FRC's) at all times?
  • Provide dust collectors with explosion vents
    • John Astad
       
      Enesure that the explosion vents are directed in a safe restrocted area, away from loading docks, walkways, parking lots, etc. The volumetric expansion of a fireball exiting an explosion vent is 10:1.
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    Very informative article that also provides generic data on explosion severity and ignition sensitivity of Aluminum dust. Was a bit troubled when mention that, "administrative controls and personal protective equipment may also be required." These type of controls should always be required instead of maybe.
John Astad

OSHA Cleaning up Dust Hazards at Florida Companies | firstcoastnews.com | Health News - 0 views

  • 37 visits to Florida companies in the last 16 months.
  • Prevention of combustible dust includes more intense housekeeping, a review of hot work processes, evaluation of electrical equipment, and prohibition of smoking or flames in dust laden areas, said OSHA Regional Administrator Cindy Coe in a statement.
  • Dust fires and explosions are significant dangers in the workplace when combined with other factors.
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  • Nationally, 3,662 violations have been identified during 813 inspections.
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    Nationally, 3,662 violations have been identified during 813 inspections in regards to the OSHA Dust NEP. What about State OSHA Plan States?
John Astad

Combustible Dust Spark Detection - Extinguishing | Fire Prevention - Dust Explosions Pr... - 0 views

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    Source for sparck detection and flame suppression
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    Spark detection systems are primarily used as a fire prevention method in dust collectors and pneumatic conveying systems by detecting and extinguishing sparks and embers.
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