Which organization defines the IDLH value for ammonia that is used in professional standards?

Which organization defines the IDLH value for ammonia that is used in professional standards?

• A. OSHA
• B. NFPA
• C. ANSI/ASHRAE
• D. EPA

Answer: (C)

IDLH, or Immediately Dangerous to Life or Health, is the exposure level used to judge the point at which a person would be in life-threatening danger or permanently impaired, and it informs emergency planning, ventilation design, and protective equipment choices. The official definitions and values for IDLH come from NIOSH, the National Institute for Occupational Safety and Health. In professional standards, various organizations (including ANSI/ASHRAE and NFPA) reference those NIOSH values when setting requirements for monitoring, ventilation, and safety procedures, but they do not publish the official IDLH numbers themselves. So the organization that defines the IDLH value used in standards is NIOSH, with other bodies incorporating those values into their standards.

IDLH, or Immediately Dangerous to Life or Health, is the exposure level used to judge the point at which a person would be in life-threatening danger or permanently impaired, and it informs emergency planning, ventilation design, and protective equipment choices. The official definitions and values for IDLH come from NIOSH, the National Institute for Occupational Safety and Health. In professional standards, various organizations (including ANSI/ASHRAE and NFPA) reference those NIOSH values when setting requirements for monitoring, ventilation, and safety procedures, but they do not publish the official IDLH numbers themselves. So the organization that defines the IDLH value used in standards is NIOSH, with other bodies incorporating those values into their standards.