Manufacturing Skill Standards Council (MSSC) Safety Assessment Practice Test

What is the guideline published by the American Conference of Governmental Industrial Hygienists that outlines safe chemical exposure levels?

1. Permissible Exposure Limit (PEL)

2. Threshold Limit Value (TLV)

3. Chemical Abstracts Service Registry Number (CAS NO.)

4. Poison Control Center Limit (PCCL)

The correct answer is: Threshold Limit Value (TLV)

The guideline published by the American Conference of Governmental Industrial Hygienists (ACGIH) that outlines safe chemical exposure levels is referred to as the Threshold Limit Value (TLV). TLVs are established to provide guidance on the safe levels of exposure to hazardous substances in the workplace. They are scientifically determined limits intended to protect workers' health across various conditions and are based on available data on toxicology, epidemiology, and industrial hygiene. TLVs are widely used by organizations to develop safety protocols and regulations regarding chemical exposure, helping to establish standards for workplace safety that can prevent adverse health effects related to long-term exposure. This makes TLVs a crucial component of occupational health and safety regulation and practice, as they aim to maintain a safe working environment by monitoring exposure levels to different chemicals. The other options presented do not serve this specific purpose. Permissible Exposure Limits (PEL), for example, are standards set by regulatory agencies such as OSHA, while the Chemical Abstracts Service Registry Number (CAS NO.) is a unique identifier for chemical substances and does not address exposure limits. Similarly, Poison Control Center Limit (PCCL) does not exist as a guideline related to occupational safety exposure levels.