Confined Space Key Terms

The following are other important terms you should know that are applicable to this training:

• An authorized entrant is an employee who is authorized by the employer to enter a permit space. At times, this individual may also be known as an operator.
• An attendant is an individual stationed outside one or more permit spaces who monitors the authorized entrants and performs all attendant's duties assigned in the employer's permit space program.
• Rescue service is the personnel designated to rescue employees from PRCSs.
• A hazardous atmosphere is an atmosphere that may expose employees to the risk of death, incapacitation, impairment of ability to self-rescue, injury, or acute illness from one or more of the following causes:
  • Flammable gas, vapor, or mist in excess of 10% of its lower flammable limit (LFL)
  • Flammable dust that exceeds its LFL
  • Atmospheric oxygen concentrations below 19.5% or above 23.5%
  • Atmospheric concentrations over the defined permissible exposure limit
  • Any other atmospheric condition that is immediately dangerous to life or health (IDLH)

To learn more visit our Confined Space Online Training web page.