Which of the following represents the three components required to initiate and sustain a fire according to the classic fire triangle?
Fire Chemistry And Classes
Question · Easy
Never enter a tank before testing the air
Short
What is the fourth element introduced in the fire tetrahedron model that is not present in the classic fire triangle?
Question · Medium
How is a Class A fire classified under the STCW/international marine standard?
Which of the following shipboard fuels represents a Class B fire hazard when ignited?
A fire involving escaping liquefied natural gas (LNG) from a cargo pipe leak falls under which class of fire?
Which type of material is involved in a Class D fire on board a vessel?
A fire in the ship's galley deep fat fryer involving cooking fats or vegetable oils is categorized under which class of fire?
Under modern ISO/IMO standards, why is 'electrical' not classified as a separate class of fire?
Which method of heat transfer is primarily responsible for a fire spreading from one cabin to the adjacent one through a hot steel bulkhead?
The spread of fire vertically up a ship's stairwell or ventilation trunking is primarily driven by which heat transfer mechanism?
Which mechanism of heat transfer allows a fire in a cargo hold to ignite wooden cargo crates on the opposite side of the hold without direct flame contact or gas flow?
What is 'flashover' in the context of compartment firefighting on board a ship?
Question · Hard
What event is characterized by an explosive ignition of superheated, unburnt gases when a door or hatch is opened, introducing oxygen into a smoldering, ventilation-limited fire room?
What does the 'Lower Flammable Limit' (LFL) of a gas-air mixture represent?
What is the difference between the 'flashpoint' and the 'auto-ignition temperature' of a fuel?
Which of the following actions is mandatory before commencing 'hot work' (e.g., welding or cutting) in a space near cargo tanks?
Fire Prevention And Hazards
What is the primary purpose of thermal insulation (lagging) on engine exhaust pipes and turbocharger casings?
Which of the following describes the mechanism of spontaneous combustion in oily rags left in a heap?
Why is regular cleaning of the galley exhaust hood filters and ducting critical for shipboard fire prevention?
Which cargo type is particularly susceptible to self-heating and spontaneous combustion in cargo holds?
Which fire safety precaution must be taken on deck during fuel bunkering operations?
What is the most common cause of shipboard galley fires?
How should oxygen and acetylene cylinders be stored on board a vessel to minimize fire and explosion hazards?
Which of the following is a key indicator that an electrical cable on board is overloaded and poses a fire risk?
Why must electrical equipment installed inside a ship's paint locker be of an 'intrinsically safe' or 'explosion-proof' type?
What is the function of a fire damper in a ship's ventilation system?
Which of the following is a critical rule regarding smoking on board a merchant vessel?
What is the purpose of fuel oil quick-closing valves on a ship?
Where are the emergency controls for stopping the main engine room ventilation fans and fuel pumps located?
Which of the following is a primary method used to prevent static electricity build-up during cargo operations on chemical or oil tankers?
How does an ionization smoke detector function to identify a fire?
Fire Detection And Alarms
Which type of detector is best suited for installation in the ship's galley to avoid false alarms from cooking steam and smoke?
Which fire detector is designed to react to the ultraviolet or infrared light spectrum produced by combustion?
What is the standard shipboard emergency alarm signal for a fire, as indicated on the muster list?
Where must a ship's Fire Control Plan be permanently stored for the assistance of shore-based firefighting departments?
What is the immediate action to take if a fire detection panel alarms while the vessel is at sea?
Which detection system uses a network of pipes to continuously draw air samples from cargo holds to a central cabinet where they are analyzed for smoke?
What is the purpose of a manual call point (break glass unit) on a ship?
Which of the following activities on board is most likely to trigger a false alarm on a photoelectric smoke detector?
How frequently should the shipboard fire detection and alarm systems be tested and verified for correct operation?
What backup power supply is required for the ship's fire detection and alarm system in the event of a main generator failure?
Which type of smoke detector is typically installed in shipboard accommodation passageways?
What is the purpose of conducting regular fire patrols on board a ship during silent hours (nighttime)?
What is meant by 'intrinsically safe' fire detectors used in hazardous areas like paint lockers or pump rooms?
Which gas detection system is mandatory in tanker pump rooms to monitor for cargo leaks and prevent fire hazards?
In the standard PASS technique for operating portable fire extinguishers, what does the letter 'P' stand for?
Portable Fire Extinguishers
For which class of fire is a standard portable water extinguisher suitable and safe to use?
Loading more…