What is the mandatory design feature for fuel piping containing LNG on ships subject to IGF Code?
Direct Answer
Option A: Double-walled piping with inert gas purging or ventilation in inter-barrier space
The IGF Code mandates double-walled piping for LNG fuel lines to provide a secondary containment barrier. The inter-barrier space must be continuously ventilated or inerted, allowing for the detection of any primary pipe leakage, thereby preventing the accumulation of flammable gas within the ship's machinery spaces or enclosed areas.
All Options
Detailed Explanation & Context
The IGF Code mandates double-walled piping for LNG fuel lines to provide a secondary containment barrier. The inter-barrier space must be continuously ventilated or inerted, allowing for the detection of any primary pipe leakage, thereby preventing the accumulation of flammable gas within the ship's machinery spaces or enclosed areas.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Ships subject to the IGF Code (AIGF).
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