In the event of a fire the doors to a stair tower must be closed to prevent the spread of fire by
Direct Answer
Option C: Convection
Closing stair tower doors prevents fire spread via convection. Hot gases and smoke rise and are carried by air currents. This action, a fundamental fire safety measure (SOLAS II-2), limits the movement of these heated, toxic gases through vertical shafts.
All Options
Detailed Explanation & Context
Closing stair tower doors prevents fire spread via convection. Hot gases and smoke rise and are carried by air currents. This action, a fundamental fire safety measure (SOLAS II-2), limits the movement of these heated, toxic gases through vertical shafts.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Refresher Advanced Fire Fighting (RAFF).
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