OCTCO/OCTF Exit Exam • Set 8 Question 19 of 30

The gas regulating valve should be opened very slowly in order to avoid:

✓

Direct Answer

Option A: Back flow gas

The inert gas regulating valve must be opened very slowly to prevent sudden pressure surges, backflow of gas, or water carry-over from the deck seal.

All Options

Back flow gas (Correct Answer)

Water carries over

Noise

Vibrations

Detailed Explanation & Context

The inert gas regulating valve must be opened very slowly to prevent sudden pressure surges, backflow of gas, or water carry-over from the deck seal.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Oil and Chemical Tanker Cargo Operations (OCTCO/OCTF).

Practice Full OCTCO/OCTF Set 8

Test yourself with 30 interactive questions, live timer, and instant score.

Launch Practice Simulator →

Question Discussion & Notes

Have a doubt, memory trick, or exam update? Share your insights with fellow mariners.

Loading mariner discussions...

« Previous Question Next Question »

More Questions in OCTCO/OCTF Set 8

View All 30 →

Q1 When operating with a negative suction head which of this type of pump is the best choice? Q2 Loading through the pump discharge and recirculation line initially is _____? Q3 When should employees be informed of the fire hazards to which they are exposed at work? Q4 A designated area within definite limits which has been accurately surveyed for clearance of sea bottom and submerged obstacles to a minimum indicated depth of water? Q5 The groups of alcohols and carbohydrates includes products which may be produced by fermentation, such as? Q6 To discharge the last amount of cargo ashore, the stripping pump through the small diameter line is used from cargo tanks. Where does this small diameter line come from in the pump room ? Q7 The term solubility refers to the ability to mix with _________? Q8 Fixed foam monitors having a maximum capacity of _____ L/min? Q9 Cargo tanks are not ____ with IG before gas freeing then the concentration of atmosphere will pass through flammable range? Q10 In scrubber _____ is readily absorbed by water?