AIGF Exit Exam • Set 11 Question 11 of 30
In connections to the gas piping systems, what are substituted for the valves?
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Direct Answer
Option B: two nonreturn valves
Connections from inert gas systems to gas fuel piping must have two non-return valves and a spool piece to prevent backflow of gas into inert systems.
All Options
A
single nonreturn valves
B
two nonreturn valves
(Correct Answer)
C
multi nonreturn valves
D
two return valves
Detailed Explanation & Context
Connections from inert gas systems to gas fuel piping must have two non-return valves and a spool piece to prevent backflow of gas into inert systems.
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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