Tanker Safety Systems Flashcards
7 cards from real Tanker Familiarization practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Tanker Safety Systems flashcards as text
What is the purpose of the foam fire-fighting system on a tanker's cargo deck?
Answer: To smother deck fires involving flammable liquid cargo
Deck foam systems deliver foam blanket coverage over the cargo deck to suppress fires involving spilled flammable liquids, starving flames of oxygen.
What does a 'safety relief valve' on a tanker cargo tank do?
Answer: Automatically vents excess pressure to prevent tank structural failure
Safety relief valves open automatically when tank pressure exceeds a preset limit, protecting the tank structure from overpressure damage.
Why is it important to monitor H2S (hydrogen sulfide) levels on crude oil tankers?
Answer: H2S is highly toxic and can be lethal even at low concentrations
Hydrogen sulfide is extremely toxic and can cause rapid incapacitation or death at concentrations above 100 ppm, posing a serious risk during cargo and tank operations.
The ship's emergency response plan for a cargo leak should FIRST prioritize:
Answer: Stopping the source of the leak and preventing ignition
The immediate priority in any cargo leak is to stop the leak if safe to do so and eliminate all ignition sources to prevent a fire or explosion.
What is the function of an ullage port on a cargo tank?
Answer: To allow measurement of the space above the cargo without opening the main hatch
Ullage ports allow crew to take cargo level measurements (ullage = space above liquid) with a tape or radar gauge without fully opening the tank, minimizing vapor release.
What is the significance of the 'auto-ignition temperature' of a cargo?
Answer: The temperature at which cargo vapors will ignite without an external ignition source
Auto-ignition temperature is the point at which cargo vapors spontaneously combust without a spark or flame, a critical safety parameter for hot-work and cargo heating operations.
During a tank entry rescue scenario, the first person to enter a suspected toxic atmosphere to rescue an incapacitated crewmate should:
Answer: Wear appropriate self-contained breathing apparatus (SCBA) and have standby rescuers ready
Rescuers must use SCBA and follow a proper confined space rescue procedure with standby personnel, as rushing in without protection often results in multiple casualties.