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AIGF exit exam questions and answers — Set 4

Set 4 of the Advanced Training for Ships subject to the IGF Code (AIGF) exit exam bank — 30 of 342 questions, with the correct option marked, and 28 of them also carry a one-line explanation. Read it end to end, jump to a single set, or search it — then sit the same bank as a timed paper. The real DG Shipping exit exam is 30 marks with 15 to pass.

These are the bank's original groupings. Practising deals the whole bank out again every time you reshuffle, so a practice “Set 3” is a different 30 questions each time — the set numbers below are the source file's, and are only used here so the key stays navigable. Options are listed in their original order with fixed letters; when you practise, those move too.

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Set 4 — 30 AIGF exit exam questions with answers

1. What emergency procedure is required before bunkering LNG fuel from shore or barge?

  • A. Purge fuel tank with sea water
  • B. Start main engine to load generator
  • C. Sign Ship-to-Shore Safety Checklist and test ESD link
  • D. Disable gas alarms to prevent false trips
Answer: C — Sign Ship-to-Shore Safety Checklist and test ESD link
Ship-to-Shore checklist ensures mutual safety readiness and functional emergency shutdown.

2. In the event of an emergency involving personal protective equipment (PPE) and safety gear during Advanced IGF Code tasks, what immediate action is required?

  • A. Raise the alarm, notify the Officer of the Watch, and execute assigned muster list duties
  • B. Evacuate the vessel immediately without informing the bridge
  • C. Wait until the end of the watch to log the issue
  • D. Attempt to resolve the incident silently without raising the alarm
Answer: A — Raise the alarm, notify the Officer of the Watch, and execute assigned muster list duties
Prompt alarm activation ensures emergency response teams can mobilize immediately.

3. How frequently must operational drills and practical checks for personal protective equipment (PPE) and safety gear be conducted for Advanced IGF Code?

  • A. Only when requested by port State control inspectors
  • B. Once every 5 years during special survey
  • C. Annually prior to vessel drydocking
  • D. At least monthly or as mandated by SOLAS and shipboard safety management system (SMS)
Answer: D — At least monthly or as mandated by SOLAS and shipboard safety management system (SMS)
Regular drills maintain crew emergency readiness and satisfy SOLAS requirements.

4. What documented record must be maintained on board following completion of tasks related to personal protective equipment (PPE) and safety gear in Advanced IGF Code?

  • A. Unsigned note on the shipboard notice board
  • B. No written record is required
  • C. Entry in the official Deck or Engine Logbook recording date, time, and operational parameters
  • D. Verbal update to port agent without logging
Answer: C — Entry in the official Deck or Engine Logbook recording date, time, and operational parameters
Official logbook entries provide mandatory legal documentation of shipboard safety tasks.

5. What type of personal protective equipment (PPE) is essential when handling personal protective equipment (PPE) and safety gear under Advanced IGF Code guidelines?

  • A. Certified task-specific PPE meeting SOLAS/IMO performance standards
  • B. High-visibility vest only
  • C. Standard street clothing with rubber gloves
  • D. Basic cotton coveralls without eye or foot protection
Answer: A — Certified task-specific PPE meeting SOLAS/IMO performance standards
Approved PPE protects personnel against specific physical and chemical hazards.

6. What parameter must be verified prior to authorizing enclosed space entry for personal protective equipment (PPE) and safety gear related to Advanced IGF Code?

  • A. Atmospheric oxygen level at 20.9% and zero toxic/flammable gas concentration
  • B. Temperature check only
  • C. Visual inspection through access hatch without gas testing
  • D. Oxygen level at 15% with ventilation turned off
Answer: A — Atmospheric oxygen level at 20.9% and zero toxic/flammable gas concentration
Enclosed space safety requires verified atmospheric gas testing prior to entry.

7. What key responsibility belongs to seafarers performing watchkeeping duties for personal protective equipment (PPE) and safety gear under Advanced IGF Code?

  • A. Leaving watchkeeping station unattended
  • B. Bypassing safety trips during routine operations
  • C. Continuous monitoring of operational parameters and immediate reporting of anomalies
  • D. Operating equipment beyond design pressure limits
Answer: C — Continuous monitoring of operational parameters and immediate reporting of anomalies
Continuous vigilance and prompt communication are core watchkeeping duties under STCW.

8. Which document contains detailed hazard data and emergency handling instructions for substances involved in personal protective equipment (PPE) and safety gear during Advanced IGF Code?

  • A. Ship's Cargo Manifest summary page
  • B. Safety Data Sheet (SDS) / Material Safety Data Sheet (MSDS)
  • C. Crew List document
  • D. Bill of Lading description
Answer: B — Safety Data Sheet (SDS) / Material Safety Data Sheet (MSDS)
Safety Data Sheets provide critical hazard identification, PPE requirements, and first aid response steps.

9. Regarding personal protective equipment (PPE) and safety gear in Advanced IGF Code, what is the mandatory safety standard required under STCW Code Table A-V/3-2?

  • A. Non-mandatory recommendation
  • B. Optional compliance based on crew discretion
  • C. Applicable only when vessel is anchored
  • D. Full compliance with approved STCW safety procedures and SMS protocols
Answer: D — Full compliance with approved STCW safety procedures and SMS protocols
STCW Code Section A-V/3-2 requires strict adherence to approved safety protocols for Advanced IGF Code.

10. In Liquefied Petroleum Gas, propane and butane can be shipped

  • A. seperately
  • B. none of the above
  • C. as a mixture
  • D. both (a) and (b)
Answer: D — both (a) and (b)
In LPG transport, propane and butane can be shipped as fully pressurized at ambient temperature, semi-refrigerated under moderate pressure, or fully refrigerated at atmospheric pressure.

11. In Liquefied Petroleum Gas, __________ can be shipped seperately or as a mixture.

  • A. both (a) and (b)
  • B. none of the above
  • C. propane
  • D. butane
Answer: A — both (a) and (b)
Commercial LPG is carried under refrigeration at -42°C for propane and -0.5°C for butane in fully refrigerated gas carriers.

12. Liquefied Petroleum Gas may be

  • A. refinery by-products
  • B. All of the above
  • C. may be produced in conjunction with natural gas
  • D. may be produced in conjunction with crude oil
Answer: B — All of the above
Refrigeration cycles on gas carriers use boil-off gas reliquefaction units to compress, condense, and return liquefied gas to the cargo tanks.

13. MARVS means

  • A. Minimum Allowable Relief Valve Setting
  • B. Maximum Allowable Relief Valve Setting
  • C. Maximum Allowed Regional Valve Setting
  • D. Minimum Allotted Relief Valve Setting
Answer: B — Maximum Allowable Relief Valve Setting

14. Maximum Allowable Relief Valve Setting on a ship's cargo tank as stated on the __________

  • A. refinery by-products
  • B. ship's Certificate of Fitness
  • C. free from chemical
  • D. production of conjunction with crude oil
Answer: B — ship's Certificate of Fitness
Vapor return lines are used during bunkering to transfer displaced tank vapors back to the bunker supplier, preventing atmospheric emissions.

15. What is MLC?

  • A. Multi Liquid Column
  • B. Meters Liquid Column
  • C. Meters Limit Column
  • D. Multi Limit Column
Answer: B — Meters Liquid Column
Custody transfer measurement systems (CTMS) record LNG density, temperature, liquid level, and pressure to accurately determine transferred energy content.

16. Meters Liquid Column is a unit of ________ used in some cargo pumping operations.

  • A. volume
  • B. pressure
  • C. none of the above
  • D. mass
Answer: B — pressure
Emergency Release Couplings (ERC) with Breakaway couplings disconnect bunkering lines automatically and close internal dry-break valves without fuel spillage during vessel drift.

17. What is Mollier diagram?

  • A. graphic method of representing ship route
  • B. graphic method of representing heat quantities of a refrigerant
  • C. graphic method of representing ship design
  • D. All of the above
Answer: B — graphic method of representing heat quantities of a refrigerant
Pre-cooling of cryogenic bunkering lines is performed gradually using LNG vapor to avoid severe thermal shock and rapid contraction stresses.

18. In Mollier diagram, graphic method of representing heat quantities and the conditions of liquefied gas at different ____________

  • A. density
  • B. volume
  • C. pressure
  • D. temperature
Answer: D — temperature
Emergency Shut Down Stage 1 (ESD-1) stops fuel transfer pumps and closes manifold ESD valves; ESD-2 initiates emergency dry-break disconnection.

19. What re the gases associated with Natural Gas Liquid?

  • A. Butane
  • B. All of the above
  • C. Ethane
  • D. Propane
Answer: B — All of the above
Methane slip refers to small quantities of unburned methane escaping through the engine exhaust during the combustion cycle.

20. What is oxygen analyser?

  • A. Instrument used to measure propane concentrations in percentage by volume
  • B. Instrument used to measure ethane concentrations in percentage by volume
  • C. Instrument used to measure oxygen concentrations in percentage by volume
  • D. Instrument used to measure butane concentrations in percentage by volume
Answer: C — Instrument used to measure oxygen concentrations in percentage by volume
Infrared and optical gas detectors are widely used for methane detection because they operate reliably without requiring atmospheric oxygen.

21. In oxygen analyser which gas in measured?

  • A. Propane
  • B. oxygen
  • C. Pentane
  • D. Butane
Answer: B — oxygen
Oxygen analyzers measure oxygen volumetric concentration (0-21% O2) in enclosed spaces to verify breathable conditions or inerting completeness.

22. What is oxygen deficient atmosphere?

  • A. atmosphere containing less than 11 percent oxygen by volume
  • B. atmosphere containing less than 21 percent oxygen by volume
  • C. atmosphere containing less than 11 percent oxygen by pressure
  • D. atmosphere containing less than 21 percent oxygen by pressure
Answer: B — atmosphere containing less than 21 percent oxygen by volume
An oxygen-deficient atmosphere is defined as any enclosed space with an oxygen content of less than 20.9% (statutory entry danger threshold below 19.5% by volume).

23. How is peroxide formed?

  • A. none of the above
  • B. chemical combination of cargo liquid with atmosphere oxygen
  • C. both (a) and (b)
  • D. chemical combination of vapour with atmosphere oxygen
Answer: C — both (a) and (b)
Peroxides are formed by the slow autoxidation of unsaturated chemical gas monomers (like 1,3-butadiene or isoprene) when exposed to atmospheric oxygen.

24. Chemical combination of cargo liquid with oxygen from other source and vapour with oxygen from other source forms __________

  • A. Formation of Peroxide
  • B. Formation of Oxygen
  • C. Formation of oxide
  • D. Formation of Ethane
Answer: A — Formation of Peroxide
Contact between reactive chemical monomers and atmospheric oxygen results in the formation of hazardous, unstable peroxides.

25. Qualities for Peroxide is

  • A. none of the above
  • B. highly reactive
  • C. both (a) and (b)
  • D. potential hazard
Answer: C — both (a) and (b)

26. In some cases, Peroxide is

  • A. unstable
  • B. both (a) and (b)
  • C. none of the above
  • D. potential hazard
Answer: B — both (a) and (b)
Certain peroxides are powerful chemical oxidizing agents capable of causing spontaneous decomposition and violent explosions.

27. How is polymer formed?

  • A. The chemical union of two or more molecules of the same compound to form a larger molecule of a new compound
  • B. The chemical union of two or more molecules of the same compound to form a smaller molecule of a new compound
  • C. The chemical reaction of one molecule of the same compound to form a smaller molecule of a new compound
  • D. The chemical reaction of one molecule of the same compound to form a larger molecule of a new compound
Answer: A — The chemical union of two or more molecules of the same compound to form a larger molecule of a new compound
Polymerization is a chemical reaction in which monomer molecules combine together to form large repeating polymer chains, releasing substantial exothermic heat.

28. What is the process for the chemical union of two or more molecules of the same compound to form a larger molecule of a new compound called?

  • A. Vaporization
  • B. Gas freeing
  • C. Static electricity
  • D. Polymerisation
Answer: D — Polymerisation
Polymerization is the chemical reaction where monomer units bond together, which if uncontrolled on ships can generate dangerous temperatures and pressures.

29. What is a Primary Barrier in liquified gas tanks?

  • A. seperating barrier between liquid and gas
  • B. Inner surface designed to contain the cargo when the cargo containment system includes a secondary barrier
  • C. nothing special barrier
  • D. chemical combination of cargo liquid with oxygen from other source
Answer: B — Inner surface designed to contain the cargo when the cargo containment system includes a secondary barrier
The primary barrier is the inner liquid-tight containment boundary designed to directly hold cryogenic cargo or fuel under normal operating conditions.

30. ___________ is a refrigerant gas?

  • A. B65
  • B. R22
  • C. C24
  • D. A22
Answer: B — R22
R22 (chlorodifluoromethane / HCFC-22) is a synthetic halogenated hydrocarbon gas historically used as an industrial refrigerant.

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