
Gas safety and controls
Presentation
•
Professional Development
•
Vocational training
•
Hard
Ice one
FREE Resource
20 Slides • 20 Questions
1
2
3
4
Multiple Choice
Which of the following is NOT listed as a control and safety device?
Valves
Thermostats
Transformers
Regulators
5
6
Open Ended
Explain how a bimetallic strip works and describe one practical application for it.
7
8
Multiple Select
Which of the following statements about thermoelectric devices is/are correct?
They generate electric current when two dissimilar metals are joined and heated.
They are used to hold open gas control valves.
A thermopile produces a higher voltage than a thermocouple.
They are used to measure atmospheric pressure.
9
10
Fill in the Blanks
11
12
Open Ended
Describe the role of a diaphragm and atmospheric pressure in the operation of a regulator.
13
14
Fill in the Blanks
15
16
Multiple Choice
Which of the following components is commonly used for over temperature protection in electronic circuits?
Thermistors
Pressure switches
Mercury switches
Bimetal thermostats
17
18
Open Ended
Explain how tip switches and mercury switches contribute to tip over protection in safety systems.
19
20
Fill in the Blanks
21
22
Multiple Select
Which of the following statements about the oxygen depletion system is/are correct?
It prevents CO poisoning by shutting down the appliance when oxygen is low.
It increases the gas flow when oxygen is low.
The thermocouple cools and releases the gas control valve when oxygen drops.
The pilot flame lifts off in search of oxygen when primary air is low.
23
24
Open Ended
Describe the process of flame rectification and its importance in gas control systems.
25
26
Fill in the Blanks
27
28
Multiple Choice
Which of the following is NOT a type of ignition device?
Pilot flame
Filament
Thermistor
Flash tube
29
30
Open Ended
How does a Peizo igniter produce a spark?
31
32
Multiple Choice
What is the main purpose of a regulator in a combination control valve system?
To ignite the burner
To control gas pressure
To detect flame failure
To cut off energy supply
33
Multiple Select
Which functions can be controlled by a combination control valve?
Gas valve
Thermostat
Energy Cut Off (ECO)
Ignition coil
34
35
36
37
Fill in the Blanks
38
Open Ended
What are some important safety considerations when working with gas control devices?
39
Multiple Choice
Why is it important to have gas control and safety devices in gas systems?
To ensure safe operation and prevent accidents
To increase the speed of gas flow
To reduce the cost of gas
To make the system look more complex
40
Open Ended
Describe a situation where a gas safety device could prevent a serious accident. What role does the device play in ensuring safety?
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