LGTCO/LGTF Exit Exam • Set 2 Question 12 of 30

What requirement applies to electrical equipment installed in gas carrier hazardous zones?

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Direct Answer

Option C: Must be certified intrinsically safe (Ex-i) or explosion-proof (Ex-d)

Electrical installations within designated hazardous areas on gas carriers must comply with IEC standards, requiring certified intrinsically safe (Ex-i) or explosion-proof (Ex-d) equipment to eliminate potential ignition sources of flammable gas atmospheres.

All Options

Household switches allowed

No certification needed

Must be certified intrinsically safe (Ex-i) or explosion-proof (Ex-d) (Correct Answer)

Bare wires permitted

Detailed Explanation & Context

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Liquefied Gas Tanker Cargo Operations (LGTCO/LGTF).

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Q1 What is the role of Nitrogen padding in gas shipping? Q2 What instrument measures oxygen content in gas samples? Q3 What is the purpose of deck water spray curtains during gas leaks? Q4 Who oversees gas cargo watchkeeping and manifold transfers on board? Q5 How frequently must operational drills and practical checks for regulatory compliance and STCW code requirements be conducted for Advanced Liquefied Gas Operations? Q6 What documented record must be maintained on board following completion of tasks related to regulatory compliance and STCW code requirements in Advanced Liquefied Gas Operations? Q7 What is the primary component of LPG Commercial Propane? Q8 At atmospheric pressure, what is the boiling point of propane? Q9 What danger is posed by Nitrogen gas leaking into enclosed accommodation spaces? Q10 What type of insulation is used in Technigaz Mark III membrane LNG tanks?