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

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

Question 2 of 15

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

Question 3 of 15

When a fixed gas detection is fitted in an enclosed space, are portable devices still needed for entry?

Question 4 of 15

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

Question 5 of 15

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

Question 6 of 15

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

Question 7 of 15

At what concentration is a flammable gas considered explosive?

Question 8 of 15

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

Question 9 of 15

How is Hydrogen Sulphide gas recognised by your senses?

Question 10 of 15

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

Question 11 of 15

Which gas is considered explosive or flammable?

Question 12 of 15

What is the purpose of fitting a gas detector in a ventilation duct?

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

Question 15 of 15

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

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.

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

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

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

False.
Your answer
True.
Your answer

When a fixed gas detection is fitted in an enclosed space, are portable devices still needed for entry?

Only in tropical areas.
Your answer
Yes, always.
Your answer
Only in cold climates.
Your answer
No, never.
Your answer

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

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

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

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

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

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

At what concentration is a flammable gas considered explosive?

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

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

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

How is Hydrogen Sulphide gas recognised by your senses?

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

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

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
It increases the readout.
Your answer

Which gas is considered explosive or flammable?

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

What is the purpose of fitting a gas detector in a ventilation duct?

To detect all kinds of gasses with only one detector.
Your answer
To trip the ventilation air in case of a gas leak outside.
Your answer
To trip the engines in case of very humid air.
Your answer
To notify the bridge of the outside air temperature.
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

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
0.05m.
Your answer
0.50m.
Your answer
5.00m.
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
Tankers must have a minimum of two portable gas detecting units.
Your answer
Test equipment for portable gas detectors must be available onboard.
Your answer
Portable gas detectors are optional is fixed detectors are fitted.
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!

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

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

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

False.
Your answer
True.
Your answer

When a fixed gas detection is fitted in an enclosed space, are portable devices still needed for entry?

Only in tropical areas.
Your answer
Yes, always.
Your answer
Only in cold climates.
Your answer
No, never.
Your answer

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

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

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

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

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

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

At what concentration is a flammable gas considered explosive?

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

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

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

How is Hydrogen Sulphide gas recognised by your senses?

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

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

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
It increases the readout.
Your answer

Which gas is considered explosive or flammable?

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

What is the purpose of fitting a gas detector in a ventilation duct?

To detect all kinds of gasses with only one detector.
Your answer
To trip the ventilation air in case of a gas leak outside.
Your answer
To trip the engines in case of very humid air.
Your answer
To notify the bridge of the outside air temperature.
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

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
0.05m.
Your answer
0.50m.
Your answer
5.00m.
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
Tankers must have a minimum of two portable gas detecting units.
Your answer
Test equipment for portable gas detectors must be available onboard.
Your answer
Portable gas detectors are optional is fixed detectors are fitted.
Your answer
Score: Attempts:

Rate Your Experience

Congratulations ! You completed Gas Detection on Ships. Now rate your experience.

Click the stars to rate

Write a Review

Confirmation Required

Are you sure to perform this action?

Assigned to You

Libraries

Bookmarked

Your Topics

  1. Learning History
  2. Courses
  3. Certificates
  2. Teach on Seably
  1. Profile and Account
  2. Help Center
  3. Sign Out