What is modern TLV-TWA exposure limit for Hydrogen Sulfide (H2S)?
Direct Answer
Option A: 1 ppm to 5 ppm
Occupational health standards and ISGOTT guidelines define the Threshold Limit Value - Time Weighted Average (TLV-TWA) for Hydrogen Sulfide strictly between 1 ppm and 5 ppm, safeguarding crew members against toxic exposure during enclosed space entry and cargo operations.
All Options
Detailed Explanation & Context
Occupational health standards and ISGOTT guidelines define the Threshold Limit Value - Time Weighted Average (TLV-TWA) for Hydrogen Sulfide strictly between 1 ppm and 5 ppm, safeguarding crew members against toxic exposure during enclosed space entry and cargo operations.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Oil and Chemical Tanker Cargo Operations (OCTCO/OCTF).
Practice Full OCTCO/OCTF Set 1
Test yourself with 30 interactive questions, live timer, and instant score.