Julia

• Flammable


  • Below 100°F, easily catch fire
• Combustible


  • Above 100°F, e.g paper, wood
• Fire triangle


  • Oxygen
  • Fuel
  • Heat
• Classification of fires


  • A (Ash) e.g wood, paper, rag
  • B (Boil) e.g gasoline, oil, paint
  • C (Current) e.g motor, switchgear
  • D e.g sodium, aluminum, potassium
  • K (Kitchen)
• Conduction


  • Direct contact of flames
• Radiation


  • Heat radiation from flames
• Convection


  • Flying embers and debris carry by the wind
• Technique in Fire Extinguishers


  1. Pass

  2. Pull

  3. Aim

  4. Squeeze

  5. Sweep
• Job Hazard Analysis (JHA)


  Safety management tools that can be define and control
• JHA Procedures


  1. List/Enumerate - describing job steps

  2. Identify

  3. Develop recommendations
• Sources of energy


  • Nuclear
  • Hydrologic
  • Geothermal
  • Solar
• Electricity


  Flow of electrons
• Current


  Measures of electrons
• Voltage


  Cause electrons to flow
• Resistance


  Resistant to current flow
• Ingress protection (IP)


  Level of protection