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TASCO exit exam questions and answers — Set 1

Set 1 of the Advanced Training for Oil Tanker Cargo Operations (TASCO) exit exam bank — 30 of 181 questions, with the correct option marked and a one-line explanation for every one. 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 1 — 30 TASCO exit exam questions with answers

1. Volume 2 of IMDG code comprises one part which is

  • A. Part 2 - Classification
  • B. Part 3 - The Dangerous Goods List (DGL)
  • C. Part 4 - Packing and tank provisions
  • D. Part 1 - General provisions, definitions and training
Answer: B — Part 3 - The Dangerous Goods List (DGL)
Volume 2 of the IMDG Code is structured to provide technical guidance, specifically containing Part 3, which is the Dangerous Goods List (DGL). This list is essential for identifying the specific shipping requirements and classification of hazardous materials.

2. Petroleum liquids that have closed-cup flash points below 140 Deg F (60 Deg C) are considered as

  • A. Volatile Liquids
  • B. Flammable Liquids
  • C. Non-volatile Liquids
  • D. Combustible Liquids
Answer: A — Volatile Liquids
Under standard classification, petroleum liquids with a closed-cup flash point below 60°C are categorized as 'volatile' or 'flammable' because they can easily produce vapours that form ignitable mixtures with air at ambient temperatures.

3. What are the three broad classification of cargoes transported on tankers?

  • A. Container, Dry Bulk and Refrigerated cargo
  • B. General cargo, Dry Break Bulk and Frozen cargo
  • C. Liquefied Natural gas, Liquefied Petroleum gas, Liquefied Nitrogen
  • D. Petroleum liquids, chemical liquids, and special liquids
Answer: D — Petroleum liquids, chemical liquids, and special liquids
Tanker cargoes are broadly classified into petroleum liquids (crude oil and products), chemical liquids (noxious liquid substances), and special liquids (like vegetable/animal oils and molasses). This classification helps determine carriage requirements, hazard profiles, and equipment standards under IBC and IGC codes.

4. What is the closed-cup flash point of non-volatile petroleum liquids?

  • A. below 140 Deg F (60 Deg C)
  • B. below 113 Deg F (45 Deg C)
  • C. 113 Deg F (45 Deg C) and above
  • D. 140 Deg F (60 Deg C) and above
Answer: D — 140 Deg F (60 Deg C) and above
Non-volatile petroleum liquids are defined by their higher flash points. According to international safety standards for tanker operations, a liquid with a closed-cup flash point of 60°C (140°F) or above is considered non-volatile, reducing the risk of vapor accumulation at ambient temperatures.

5. What is the Reid vapor pressure of flammable liquids of natural gasoline & Naphtha which has open cup flash point of 80 Deg F (26.7 Deg C)?

  • A. 8.5 psi and below
  • B. 14 psi and above
  • C. More than 24.6 psi
  • D. More than 8.5 but less than 14 psi
Answer: D — More than 8.5 but less than 14 psi
Reid Vapor Pressure (RVP) measures the volatility of petroleum products. For natural gasoline and Naphtha with a flash point of 80°F, the specific regulatory classification for RVP range is categorized as more than 8.5 but less than 14 psi to determine handling safety.

6. Tankers carry palm oil, molasses and tallow as special liquids cargoes in bulk, which are grouped as

  • A. Other chemical Liquids
  • B. Animal/Vegetable oils
  • C. Non-volatile Liquids
  • D. Miscellaneous Liquids
Answer: B — Animal/Vegetable oils
Palm oil, molasses, and tallow are classified as Animal and Vegetable oils. These are distinct from mineral oils and fall under specific requirements for carriage and pollution prevention on specialized tankers.

7. Animal/Vegetable Oils carried in tankers and classified as

  • A. Special Liquids
  • B. Non-volatile Liquids
  • C. Chemical Liquid
  • D. Non-flammable Liquids
Answer: A — Special Liquids
Animal and Vegetable oils, while distinct from petroleum hydrocarbons, are categorized as special liquids due to their persistent nature and specific requirements for carriage and potential pollution mitigation as defined in MARPOL and IBC Code guidelines.

8. Structure of MARPOL Convention layouts are as follows: find the correct one.

  • A. Convention, Protocol I, Protocol II, Protocol 1978, Protocol 1997
  • B. Protocol 1978, Protocol 1997, Protocol I, Protocol II, Convention
  • C. Protocol 1997, Protocol 1978, Protocol I, Protocol II, Convention
  • D. Convention, Protocol 1978, Protocol 1997, Protocol I, Protocol II
Answer: D — Convention, Protocol 1978, Protocol 1997, Protocol I, Protocol II
The formal structure of the MARPOL Convention includes the main Convention, Protocol I (Reports on Incidents), Protocol II (Arbitration), and subsequent major amendments including the 1978 Protocol (MARPOL 73/78) and the 1997 Protocol (Annex VI).

9. The IMDG Code became mandatory on

  • A. 1st of January 2006
  • B. 1st of January 2002
  • C. 1st of January 2004
  • D. 1st of January 2000
Answer: C — 1st of January 2004
The International Maritime Dangerous Goods (IMDG) Code was adopted by the IMO and became mandatory under SOLAS Chapter VII on 1st January 2004 to ensure the safe transport of dangerous goods by sea.

10. Liquids that have an open-cup flash point at or below 80 Deg F (26.7 Deg C) are classified as

  • A. Flammable Liquids
  • B. Combustible Liquids
  • C. Volatile Liquids
  • D. Non-volatile Liquids
Answer: A — Flammable Liquids
In accordance with safety standards, liquids with an open-cup flash point at or below 80°F (26.7°C) are classified as 'flammable liquids' due to their ability to form explosive gas mixtures at ambient temperatures.

11. What is the open cup flash point of the petroleum liquids that are classified as combustible liquids?

  • A. Above 60 Deg F (15.6 Deg C)
  • B. Below 60 Deg F (15.6 Deg C)
  • C. Below 80 Deg F (26.7 Deg C)
  • D. Above 80 Deg F (26.7 Deg C)
Answer: D — Above 80 Deg F (26.7 Deg C)
Combustible liquids are those with a flash point higher than 80°F (26.7°C). Because they do not readily vaporize at ambient conditions, they are considered less immediately hazardous than flammable liquids but still require safety precautions.

12. What is an inert condition?

  • A. When the oxygen is 21% by volume in a tank
  • B. When the oxygen has been eliminated from a tank
  • C. condition in which the oxygen content throughout the atmosphere of a tank has been reduced to 8% or less by volume by the addition of inert gas.
  • D. When the oxygen is 10% by volume in a tank
Answer: C — condition in which the oxygen content throughout the atmosphere of a tank has been reduced to 8% or less by volume by the addition of inert gas.
An inert condition is defined as an atmosphere where the oxygen content is reduced to 8% or less by volume, usually by injecting flue gas or nitrogen, making the tank atmosphere non-combustible.

13. What factor mainly affects Vapour cloud dilution rate?

  • A. Weather conditions
  • B. Quantity of Spill
  • C. Thermal inversion
  • D. Diameter of the vapour cloud
Answer: A — Weather conditions
Weather conditions, specifically wind speed and direction, are the primary drivers for vapor cloud dispersion and dilution. They dictate how quickly a released gas plume is mixed with fresh air, reducing its concentration below the LFL.

14. What is cold work?

  • A. Work that cannot create a source of ignition
  • B. Carrying out work in a cold atmosphere
  • C. Work that can be done only in cold temperatures
  • D. Carrying out work on reefer containers
Answer: A — Work that cannot create a source of ignition
Cold work refers to maintenance activities that do not involve heat, sparks, or potential sources of ignition, such as painting or manual cleaning, thereby not requiring a 'Hot Work' permit.

15. What documented record must be maintained on board following completion of tasks related to regulatory compliance and STCW code requirements in Advanced Oil Tanker Cargo?

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

16. What type of personal protective equipment (PPE) is essential when handling emergency procedures and alarm protocols under Advanced Oil Tanker Cargo guidelines?

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

17. What parameter must be verified prior to authorizing enclosed space entry for emergency procedures and alarm protocols related to Advanced Oil Tanker Cargo?

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

18. What key responsibility belongs to seafarers performing watchkeeping duties for emergency procedures and alarm protocols under Advanced Oil Tanker Cargo?

  • 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.

19. Which document contains detailed hazard data and emergency handling instructions for substances involved in emergency procedures and alarm protocols during Advanced Oil Tanker Cargo?

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

20. Regarding emergency procedures and alarm protocols in Advanced Oil Tanker Cargo, what is the mandatory safety standard required under STCW Code Table A-V/1-1?

  • A. Optional compliance based on crew discretion
  • B. Non-mandatory recommendation
  • 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/1-1 requires strict adherence to approved safety protocols for Advanced Oil Tanker Cargo.

21. What is the primary function of an Inert Gas System (IGS) aboard crude oil tankers?

  • A. Cool liquid cargo during transit
  • B. Increase cargo discharge speed
  • C. Reduce oxygen content in cargo tanks below 8% to prevent explosive vapor-air mixtures
  • D. Vent hydrocarbon gas to atmosphere
Answer: C — Reduce oxygen content in cargo tanks below 8% to prevent explosive vapor-air mixtures
IGS supplies inert gas (O2 < 5%) to maintain tank atmosphere below the lower flammable limit.

22. Under MARPOL Annex I, what is the maximum instantaneous rate of oil discharge allowed from cargo tank areas of oil tankers?

  • A. 30 liters per nautical mile
  • B. 60 liters per nautical mile
  • C. 15 ppm fixed
  • D. 100 liters per hour
Answer: A — 30 liters per nautical mile
MARPOL Annex I caps instantaneous discharge rate of oil from tankers en route at 30 L/nm.

23. What device measures oxygen concentration continuously in the main inert gas supply line?

  • A. Paramagnetic or Electrochemical Oxygen Analyzer
  • B. Infrared Combustible Gas Indicator
  • C. FID Sensor
  • D. Refractometer
Answer: A — Paramagnetic or Electrochemical Oxygen Analyzer
Continuous O2 analyzers monitor inert gas purity before line delivery to cargo tanks.

24. What safety device prevents reverse flow of hydrocarbon gas from cargo tanks into the engine room boiler stack?

  • A. Flame screen on vent mast
  • B. High level alarm sensor
  • C. PV valve
  • D. Deck Water Seal and Non-Return Valve
Answer: D — Deck Water Seal and Non-Return Valve
The deck water seal acts as an absolute barrier against backflow of flammable gas to safe spaces.

25. What is the purpose of Crude Oil Washing (COW) performed during tanker discharge operations?

  • A. Clean cargo piping with chemical solvent
  • B. Wash tanks with hot sea water
  • C. Cool cargo pumps
  • D. Use crude oil spray to wash heavy sludge and paraffin deposits from tank walls and bottom
Answer: D — Use crude oil spray to wash heavy sludge and paraffin deposits from tank walls and bottom
COW dissolves wax and sludge using cargo oil, reducing ROB and tank cleaning time.

26. What is the primary risk associated with static electricity buildup during tanker cargo loading?

  • A. Ignition of flammable hydrocarbon vapors inside cargo tanks from electrostatic spark discharge
  • B. Overpressurization of cargo hoses
  • C. Damage to cargo pump impellers
  • D. Corrosion of tank steel plates
Answer: A — Ignition of flammable hydrocarbon vapors inside cargo tanks from electrostatic spark discharge
Static charges from high fluid velocities can spark and ignite flammable vapor-air mixtures.

27. What is the function of a High Velocity Pressure/Vacuum (P/V) Relief Valve on cargo tanks?

  • A. Release excessive vapor pressure or vacuum during loading/ballasting while keeping exit velocity high to disperse gas
  • B. Pump out tank bilges
  • C. Sample cargo liquid density
  • D. Keep cargo tanks under high pressure permanently
Answer: A — Release excessive vapor pressure or vacuum during loading/ballasting while keeping exit velocity high to disperse gas
High-velocity PV valves jet flammable gases high above the deck to prevent vapor accumulation.

28. Under SOLAS, what is the minimum required capacity of inert gas plant relative to maximum cargo discharge rate?

  • A. 100% of discharge rate
  • B. 50% of discharge rate
  • C. 150% of discharge rate
  • D. At least 125% of the maximum required cargo discharge pumping rate
Answer: D — At least 125% of the maximum required cargo discharge pumping rate
IG plant capacity must exceed maximum discharge rate by 25% to prevent vacuum creation.

29. What instrument is used to test cargo tanks for toxic hydrocarbon gases before human entry?

  • A. Personal Multi-Gas Detector (O2, H2S, CO, LFL)
  • B. Sounding tape
  • C. Explosimeter calibrated in % LFL only
  • D. Hydrometer
Answer: A — Personal Multi-Gas Detector (O2, H2S, CO, LFL)
Enclosed space entry requires verifying O2 (20.9%), toxic gases (H2S), and 0% LFL.

30. What is the purpose of an Oil Discharge Monitoring and Control System (ODMCS) during ballast discharge?

  • A. Vent inert gas to sea
  • B. Control cargo pump speed
  • C. Continuously measure oil content (ppm), discharge rate, and total quantity discharged overboard
  • D. Measure tank temperature
Answer: C — Continuously measure oil content (ppm), discharge rate, and total quantity discharged overboard
ODMCS automatically stops overboard discharge if legal oil rate or total limit is exceeded.

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