What is flammable range ?
Direct Answer
Option D: The range of hydrocarbon gas concentrations in air between the lower and upper flammable limits. Mixtures within this range are capable of being ignited and of burning.
The flammable range, or explosive range, is the concentration interval of a flammable gas or vapor in air, between the Lower Flammable Limit (LFL) and Upper Flammable Limit (UFL), where ignition and sustained combustion can occur. ISGOTT emphasizes maintaining tank atmospheres outside this range for safety.
All Options
Detailed Explanation & Context
The flammable range, or explosive range, is the concentration interval of a flammable gas or vapor in air, between the Lower Flammable Limit (LFL) and Upper Flammable Limit (UFL), where ignition and sustained combustion can occur. ISGOTT emphasizes maintaining tank atmospheres outside this range for safety.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Chemical Tanker Cargo Operations (CHEMCO).
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