2
F Gas Sample Paper questions with accurate detailed answers
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1 According to BSEN378 which one of the following refrigerants falls into the 'Safety Class'
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A3?
R1270
2 Which one of the following actions is correct for Category 1 technician attending an R22
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system which has a small leak?
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Recover refrigerant and send for destruction
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3 Under F- Gas regulations when should a newly installed system be checked for leakage?
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Immediately after being put into service
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4 Which of the following leak check intervals applies to a refrigeration system of more than
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500 tons of CO2 equivalent?
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6 months
||
5 Which one of the following has the lowest GWP?
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R1234ze
6 Which of the following refrigerants is not flammable?
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, 2
R407f
7 If a system has fixed leak detection fitted the intervals between leak checks is?
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Doubled
8 What is the condition of a refrigerant in a liquid line with a saturation temperature of
|| || || || || || || || || || || || || || || || ||
45°C when its temperature is 35°C?
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Sub-cooled liquid ||
9 What is a reasonable condensing temperature for a forced air cooled condenser?
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Air on plus 15K
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10 What would cause a reduction in efficiency of a cooling plant?
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High pressure ratio
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11 A leak has occurred from a service valve gland. Which of the following would you see?
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Oil traces
||
12 Where is refrigeration loss more likely to be caused with frequent operation of a suction
|| || || || || || || || || || || || || || || ||
service valve? ||
Valve stem ||
F Gas Sample Paper questions with accurate detailed answers
|| || || || || || || ||
1 According to BSEN378 which one of the following refrigerants falls into the 'Safety Class'
|| || || || || || || || || || || || || || ||
A3?
R1270
2 Which one of the following actions is correct for Category 1 technician attending an R22
|| || || || || || || || || || || || || || || ||
system which has a small leak?
|| || || || ||
Recover refrigerant and send for destruction
|| || || || ||
3 Under F- Gas regulations when should a newly installed system be checked for leakage?
|| || || || || || || || || || || || || ||
Immediately after being put into service
|| || || || ||
4 Which of the following leak check intervals applies to a refrigeration system of more than
|| || || || || || || || || || || || || || || ||
500 tons of CO2 equivalent?
|| || || ||
6 months
||
5 Which one of the following has the lowest GWP?
|| || || || || || || || ||
R1234ze
6 Which of the following refrigerants is not flammable?
|| || || || || || || ||
, 2
R407f
7 If a system has fixed leak detection fitted the intervals between leak checks is?
|| || || || || || || || || || || || || ||
Doubled
8 What is the condition of a refrigerant in a liquid line with a saturation temperature of
|| || || || || || || || || || || || || || || || ||
45°C when its temperature is 35°C?
|| || || || ||
Sub-cooled liquid ||
9 What is a reasonable condensing temperature for a forced air cooled condenser?
|| || || || || || || || || || || ||
Air on plus 15K
|| || ||
10 What would cause a reduction in efficiency of a cooling plant?
|| || || || || || || || || || ||
High pressure ratio
|| ||
11 A leak has occurred from a service valve gland. Which of the following would you see?
|| || || || || || || || || || || || || || || ||
Oil traces
||
12 Where is refrigeration loss more likely to be caused with frequent operation of a suction
|| || || || || || || || || || || || || || || ||
service valve? ||
Valve stem ||
