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

At what concentration is a flammable gas considered explosive?

Question 2 of 15

Which gas is considered explosive or flammable?

Question 3 of 15

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

Question 4 of 15

What type of sensor is used to measure oxygen levels?

Question 5 of 15

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

Question 6 of 15

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

Question 7 of 15

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

Question 8 of 15

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

Question 9 of 15

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

Question 10 of 15

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

Question 11 of 15

Which factor affects the sampling time on a suction line in a gas sampling system?

Question 12 of 15

How is Hydrogen Sulphide gas recognised by your senses?

Question 13 of 15

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

Question 14 of 15

In which place would you normally find fixed gas detection on tankers?

Question 15 of 15

How long are catalytical-type sensors expected to last?

You Passed This Quiz. Let’s Move On!

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At what concentration is a flammable gas considered explosive?

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

Which gas is considered explosive or flammable?

Carbon Dioxide.
Your answer
Nitrogen.
Your answer
Propane.
Your answer
Water Mist.
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
0.50m.
Your answer
0.05m.
Your answer
5.00m.
Your answer

What type of sensor is used to measure oxygen levels?

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

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

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

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

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
The detectors must be able to detect both flammable gasses and oxygen.
Your answer
Portable gas detectors are optional is fixed detectors are fitted.
Your answer

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

False.
Your answer
True.
Your answer

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

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

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

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

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

Two fixed pipe gas detection points.
Your answer
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

Which factor affects the sampling time on a suction line in a gas sampling system?

Pipe length.
Your answer
Temperature.
Your answer
Time of day.
Your answer
Pipe material.
Your answer

How is Hydrogen Sulphide gas recognised by your senses?

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

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

True.
Your answer
False.
Your answer

In which place would you normally find fixed gas detection on tankers?

Chief Engineer's Office?
Your answer
Personal cabins.
Your answer
Bridge.
Your answer
Pump room.
Your answer

How long are catalytical-type sensors expected to last?

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

At what concentration is a flammable gas considered explosive?

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

Which gas is considered explosive or flammable?

Carbon Dioxide.
Your answer
Nitrogen.
Your answer
Propane.
Your answer
Water Mist.
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
0.50m.
Your answer
0.05m.
Your answer
5.00m.
Your answer

What type of sensor is used to measure oxygen levels?

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

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

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

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

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
The detectors must be able to detect both flammable gasses and oxygen.
Your answer
Portable gas detectors are optional is fixed detectors are fitted.
Your answer

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

False.
Your answer
True.
Your answer

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

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

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

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

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

Two fixed pipe gas detection points.
Your answer
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

Which factor affects the sampling time on a suction line in a gas sampling system?

Pipe length.
Your answer
Temperature.
Your answer
Time of day.
Your answer
Pipe material.
Your answer

How is Hydrogen Sulphide gas recognised by your senses?

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

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

True.
Your answer
False.
Your answer

In which place would you normally find fixed gas detection on tankers?

Chief Engineer's Office?
Your answer
Personal cabins.
Your answer
Bridge.
Your answer
Pump room.
Your answer

How long are catalytical-type sensors expected to last?

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

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