What is considered to be a "hazardous energy source"?

  1. Electrical greater than 50 volts
  2. Mechanical that can result in injury
  3. Hydraulic greater than 12 psi
  4. Pneumatic greater than 12 psig
  5. Gravity that can result in injury (impact, pinch point)
  6. Chemical that can result in injury (burn, acute inhalation hazards)
  7. Thermal that can result in injury (2nd degree burn or worse)