What parameter must be verified prior to authorizing enclosed space entry for regulatory compliance and STCW code requirements related to Advanced Liquefied Gas Tanker?
Direct Answer
Option C: Atmospheric oxygen level at 20.9% and zero toxic/flammable gas concentration
Enclosed space entry requires an atmosphere with 20.9% oxygen and zero flammable or toxic gases. STCW and IMO guidelines mandate rigorous testing using calibrated equipment before entry. These parameters ensure the space is safe for human life, preventing the fatal consequences of oxygen deficiency or toxic gas inhalation.
All Options
Detailed Explanation & Context
Enclosed space entry requires an atmosphere with 20.9% oxygen and zero flammable or toxic gases. STCW and IMO guidelines mandate rigorous testing using calibrated equipment before entry. These parameters ensure the space is safe for human life, preventing the fatal consequences of oxygen deficiency or toxic gas inhalation.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Liquefied Gas Tanker Cargo Operations (GASCO).
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