What is the typical measuring range for an oxygen analyzer?
A. 10 ppm volume oxygen in air…
Posts Blog Archive: April 2022
Presence of cargo vapour or inert gas should always be suspected in cargo tanks.
A. false����������������������������…
Ventilation should be stopped about 10 hours before starting the tests.
A. true����������������������������…
A tank or compartment is "gas free" when there is an absence of dangerous concentrations of
A. any combustible liquid����������…
When entering the pump room of a tanker to rescue an unconscious person, which items of the equipment listed are you required to be using?
A. Protective clothing and explosi…
What are all the three basic stages which leads to a potential static hazard and necessary for an electrostatic ignition?
A. Viscosity, charge seperation an…
The permit to work system as recommended by the Code of Safe Working Practices for Merchant Seaman has how many sections ?
A. two����������������������������…
Which of the following current level stops the heart functioning and blood circulation?
A. 0.01A���������������������������…
Which of the following activity is done on completion of work?
A. Closing and securing all openings���������…
What is the least you must do before entering a cofferdam in the engine room?
A. Open up the manhole and enter th…
Which of the following is required to be included in the fireman's (emergency) outfit?
A. Chemical protection face shield�…
To detect the presence of explosive gases in any space, tank, or compartment, you should use a
A. flame scanner������������������…
Which of the following is a particular challenge when entering fuel oil tanks?
A. slippery surface���������������…
Electrochemical Sensors: identify a key finding for its use on board tankers
A. Electrochemical sensors are base…
What should you do when the alarm bell on a self-contained breathing apparatus sounds?
A. Immediately evacuate the contaminated are…
Is an enclosed space entry permit required for entering pump room?
A. The Master will decide based on …
Which of the following current level leads to muscular contraction?
A. 0.01A����������������������������…
Operating Principle of the Infrared instrument: identify the key principle that leads to detection of hydrocarbon gas,
A. The infra-red (IR) sensor is a t…
What instrument is used to measure hydrocarbon gas in an inert atmospheres ?
A. Explosimeter������������������…
A crew member suffering from hypothermia should be given__________.
A. a small dose of alcohol��������…
The reading of a combustible gas indicator indicates the percentage of the
A. lower explosive limit of a flammable gas con…
Vapours having low relative density than air will be found at the _____ of the enclosed space.
A. middle�����������������������…
What is the maximum reliable shelf life of a filter gas mask canister if the seal is unbroken?
A. 1 year from the date of manufact…
What is the limitation of a combustible gas detector of catalytic combustion type?
A. It cannot be used for measureme…
The hydrocarbon content in the atmosphere of a pump room is measured using a
A. Tankscope����������������������…
What is the least a person should do before entering machinery spaces?
A. Wear appropriate personal protective equipm…
What is the maximum interval of time between sampling and analysing for each sampling head location sequentially?
A. Not exceeding 50 minutes inter…
Key Features and Measurement of an Effective Safety Culture; identify one statement that identifies an effective safety culture
A. Recognition that all accidents ar…
Oxygen Analyzer: what is your key finding in measuring oxygen level ?
A. Portable oxygen analyzers are n…
Where is smoking permitted on board ship while at a berth ?
A. Designated smoking room���������������������…
A liquid is considered to be flammable when the flash point is less than
A. 50° F��������������������������…
Which type of anodes must not be fitted in tanks where flammable gases can be present ?
A. Magnesium anodes����������������������������…