Assessment: Gas Detection on Ships

Gas Detection on Ships

Gas Detection on Ships

Hazardous gases found onboard and how to detect them.

0%
Introduction to Hazardous Gases 13 minutes
Ship Types and Hazardous Gases 10 minutes
Gas Detection Systems 12 minutes
Portable Gas Sampling and Monitoring 5 minutes
Assessment: Gas Detection on Ships 6 minutes

Lessons

Gas Detection on Ships

Gas Detection on Ships

Hazardous gases found onboard and how to detect them.

0%
Introduction to Hazardous Gases 13 minutes
Ship Types and Hazardous Gases 10 minutes
Gas Detection Systems 12 minutes
Portable Gas Sampling and Monitoring 5 minutes
Assessment: Gas Detection on Ships 6 minutes
2

Assessment: Gas Detection on Ships

  • 15
  • Questions
  • No time limit
  • 2
  • Attempts left
  • 70%
  • Passing threshold

Question 1 of 15

Which gas is considered explosive or flammable?

Question 2 of 15

What type of sensor is used to measure oxygen levels?

Question 3 of 15

How is Hydrogen Sulphide gas recognised by your senses?

Question 4 of 15

How long are catalytical-type sensors expected to last?

Question 5 of 15

What is normally NOT required according to IMO rules to enter an enclosed space onboard a ship?

Question 6 of 15

Why must the airflow in a ventilation duct be switched off during testing and calibration?

Question 7 of 15

What is the function of a Flame Arrestor in the sampling system?

Question 8 of 15

At what concentration is a flammable gas considered explosive?

Question 9 of 15

In a water ballast tank, what is the recommended minimum height of the sample pipe from the bottom of the tank?

Question 10 of 15

IR sensors are resilient to silicon poisoning. Is this statement true or false?

Question 11 of 15

Which of the following is NOT true about portable gas detection on tankers?

Question 12 of 15

What pipe material must be used when sampling for Hydrogen Sulphide gas?

Question 13 of 15

What kind of gas detection is required in water ballast tanks adjacent to cargo tanks on newer tankers?

Question 14 of 15

What concentration of Oxygen in the air is required for it to be breathable?

Question 15 of 15

Oxygen sensors have an effective life of 5 or more years. Is this statement true or false?

You Passed This Quiz. Let’s Move On!

Good work! You just completed the quiz Assessment: Gas Detection on Ships. Let’s move on to the next.

Which gas is considered explosive or flammable?

Propane.
Your answer
Water Mist.
Your answer
Carbon Dioxide.
Your answer
Nitrogen.
Your answer

What type of sensor is used to measure oxygen levels?

IR sensors.
Your answer
Electro-chemical sensors.
Your answer
Semiconductors.
Your answer
Catalytical sensors.
Your answer

How is Hydrogen Sulphide gas recognised by your senses?

It smells like rotten eggs.
Your answer
It smells like drying paint.
Your answer
It smells like almonds.
Your answer
It is not possible to sense, ever.
Your answer

How long are catalytical-type sensors expected to last?

2 years.
Your answer
They have no effective lifespan.
Your answer
10 years.
Your answer
5 years.
Your answer

What is normally NOT required according to IMO rules to enter an enclosed space onboard a ship?

A permit to work.
Your answer
Personal protective equipment.
Your answer
Gas levels to be monitored by portable equipment.
Your answer
A visual and smell check.
Your answer

Why must the airflow in a ventilation duct be switched off during testing and calibration?

It increases the readout.
Your answer
It reduces the temperature too much to get a correct reading.
Your answer
It dilutes the calibration gas.
Your answer
It has no effect on the testing.
Your answer

What is the function of a Flame Arrestor in the sampling system?

To prevent explosions.
Your answer
To provide maintenance opportunities.
Your answer
To shorten the sampling line.
Your answer
To increase the lifespan of the sensors.
Your answer

At what concentration is a flammable gas considered explosive?

More than 100 PPM.
Your answer
Less than 10% LFL.
Your answer
At 100% Volume.
Your answer
More than 100% LFL.
Your answer

In a water ballast tank, what is the recommended minimum height of the sample pipe from the bottom of the tank?

1.00m.
Your answer
5.00m.
Your answer
0.05m.
Your answer
0.50m.
Your answer

IR sensors are resilient to silicon poisoning. Is this statement true or false?

True.
Your answer
False.
Your answer

Which of the following is NOT true about portable gas detection on tankers?

The detectors must be able to detect both flammable gasses and oxygen.
Your answer
Test equipment for portable gas detectors must be available onboard.
Your answer
Tankers must have a minimum of two portable gas detecting units.
Your answer
Portable gas detectors are optional is fixed detectors are fitted.
Your answer

What pipe material must be used when sampling for Hydrogen Sulphide gas?

Copper.
Your answer
Plastic.
Your answer
Brass.
Your answer
Stainless steel.
Your answer

What kind of gas detection is required in water ballast tanks adjacent to cargo tanks on newer tankers?

One suction point fixed gas detection point.
Your answer
No gas detection is required in water ballast tanks.
Your answer
Portable gas detection is considered sufficient.
Your answer
Two fixed pipe gas detection points.
Your answer

What concentration of Oxygen in the air is required for it to be breathable?

19%.
Your answer
25%.
Your answer
21%.
Your answer
15%.
Your answer

Oxygen sensors have an effective life of 5 or more years. Is this statement true or false?

False.
Your answer
True.
Your answer
Score: Attempts:

Too Bad! But That Wasn't Enough

Unfortunately you didn’t have enough correct answers to pass the quiz. Try again!

Which gas is considered explosive or flammable?

Propane.
Your answer
Water Mist.
Your answer
Carbon Dioxide.
Your answer
Nitrogen.
Your answer

What type of sensor is used to measure oxygen levels?

IR sensors.
Your answer
Electro-chemical sensors.
Your answer
Semiconductors.
Your answer
Catalytical sensors.
Your answer

How is Hydrogen Sulphide gas recognised by your senses?

It smells like rotten eggs.
Your answer
It smells like drying paint.
Your answer
It smells like almonds.
Your answer
It is not possible to sense, ever.
Your answer

How long are catalytical-type sensors expected to last?

2 years.
Your answer
They have no effective lifespan.
Your answer
10 years.
Your answer
5 years.
Your answer

What is normally NOT required according to IMO rules to enter an enclosed space onboard a ship?

A permit to work.
Your answer
Personal protective equipment.
Your answer
Gas levels to be monitored by portable equipment.
Your answer
A visual and smell check.
Your answer

Why must the airflow in a ventilation duct be switched off during testing and calibration?

It increases the readout.
Your answer
It reduces the temperature too much to get a correct reading.
Your answer
It dilutes the calibration gas.
Your answer
It has no effect on the testing.
Your answer

What is the function of a Flame Arrestor in the sampling system?

To prevent explosions.
Your answer
To provide maintenance opportunities.
Your answer
To shorten the sampling line.
Your answer
To increase the lifespan of the sensors.
Your answer

At what concentration is a flammable gas considered explosive?

More than 100 PPM.
Your answer
Less than 10% LFL.
Your answer
At 100% Volume.
Your answer
More than 100% LFL.
Your answer

In a water ballast tank, what is the recommended minimum height of the sample pipe from the bottom of the tank?

1.00m.
Your answer
5.00m.
Your answer
0.05m.
Your answer
0.50m.
Your answer

IR sensors are resilient to silicon poisoning. Is this statement true or false?

True.
Your answer
False.
Your answer

Which of the following is NOT true about portable gas detection on tankers?

The detectors must be able to detect both flammable gasses and oxygen.
Your answer
Test equipment for portable gas detectors must be available onboard.
Your answer
Tankers must have a minimum of two portable gas detecting units.
Your answer
Portable gas detectors are optional is fixed detectors are fitted.
Your answer

What pipe material must be used when sampling for Hydrogen Sulphide gas?

Copper.
Your answer
Plastic.
Your answer
Brass.
Your answer
Stainless steel.
Your answer

What kind of gas detection is required in water ballast tanks adjacent to cargo tanks on newer tankers?

One suction point fixed gas detection point.
Your answer
No gas detection is required in water ballast tanks.
Your answer
Portable gas detection is considered sufficient.
Your answer
Two fixed pipe gas detection points.
Your answer

What concentration of Oxygen in the air is required for it to be breathable?

19%.
Your answer
25%.
Your answer
21%.
Your answer
15%.
Your answer

Oxygen sensors have an effective life of 5 or more years. Is this statement true or false?

False.
Your answer
True.
Your answer
Score: Attempts:

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