What is the function of a High Velocity Pressure/Vacuum (P/V) Relief Valve on cargo tanks?
Direct Answer
Option A: Release excessive vapor pressure or vacuum during loading/ballasting while keeping exit velocity high to disperse gas
High-velocity P/V valves maintain safe tank pressures during dynamic loading phases while discharging vapors at a minimum vertical velocity of 30 m/s to ensure safe atmospheric dispersion above the deck.
All Options
Detailed Explanation & Context
High-velocity P/V valves maintain safe tank pressures during dynamic loading phases while discharging vapors at a minimum vertical velocity of 30 m/s to ensure safe atmospheric dispersion above the deck.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Oil Tanker Cargo Operations (TASCO).
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