What is the eight-hour safe exposure limit for Carbon Monoxide?
Direct Answer
Option B: 25ppm
The eight-hour safe exposure limit for Carbon Monoxide (CO) is generally accepted as 25 ppm (parts per million) as a Time-Weighted Average (TWA). This occupational exposure limit, often referenced by organizations like ACGIH and adopted in maritime safety guidelines, protects personnel from long-term health effects.
All Options
Detailed Explanation & Context
The eight-hour safe exposure limit for Carbon Monoxide (CO) is generally accepted as 25 ppm (parts per million) as a Time-Weighted Average (TWA). This occupational exposure limit, often referenced by organizations like ACGIH and adopted in maritime safety guidelines, protects personnel from long-term health effects.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Chemical Tanker Cargo Operations (CHEMCO).
Practice Full CHEMCO Set 10
Test yourself with 30 interactive questions, live timer, and instant score.