What risk occurs if static electricity accumulates during initial filling of an un-inerted tank?
Direct Answer
Option B: Electrostatic spark ignition causing tank explosion
Un-inerted tanks accumulate electrostatic charges during initial high-velocity loading of low-conductivity oils. As stipulated in ISGOTT, if the hydrocarbon vapor concentration is within the flammable range, an electrostatic spark can cause a catastrophic explosion, necessitating strict flow rate limitations until the inlet pipe is fully submerged.
All Options
Detailed Explanation & Context
Un-inerted tanks accumulate electrostatic charges during initial high-velocity loading of low-conductivity oils. As stipulated in ISGOTT, if the hydrocarbon vapor concentration is within the flammable range, an electrostatic spark can cause a catastrophic explosion, necessitating strict flow rate limitations until the inlet pipe is fully submerged.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Oil and Chemical Tanker Cargo Operations (OCTCO/OCTF).
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