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Emenac Incorporated

Why Have a Virtual Receptionist? - 0 views

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    Business owners take all possible steps to ensure customer satisfaction. One of the most successful and recommended strategies in this regard is to begin with a virtual receptionist service. This service brings in extra representatives for a business and eases the lives of the customers. When the customers have questions or queries to be answered or any problems to be solved, they try to reach the authoritative body telephonically and it is not uncommon for them for not having to been able to do so. This is where the need for virtual receptionists comes in. Virtual receptionists are basically persons who work for the customer support but do not work from the office or any specified location.
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.
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