RETA
RETA Industrial Refrigeration Book 3 (2023 Revision)
Exam Study Questions and Answers UPDATED 2025
What is the purpose of an SOP? (pg. 1-3)
A) To break down the amount of work to be done in a given time
B) To read after the job is done
C) To provide guidance and specific steps necessary to safely operate the system
D) To provide a standard way to perform the job faster -Correct Answer ✔C) To
provide guidance and specific steps necessary to safely operate the system
Where can you find a list of the proper PPE needed to safely perform your job
tasks? (pg. 1-4)
A) SOPs and MPs
B) Safety Data Sheet
C) Risk Management Plan
D) Hazardous Material Business Plan -Correct Answer ✔A) SOPs and MPs
Which of the following requires hot work permits? (pg. 1-7)
A) The safety officer
B) OSHA regulations
C) The superintendent of the jobsite
D) Standard operating procedures -Correct Answer ✔B) OSHA regulations
What can trapping liquid cause? (pg. 1-12)
A) A possible release
B) Reduced refrigerant flow
C) The system to pump down
D) A safe condition for isolated components -Correct Answer ✔A) A possible
release
How much pressure can build per degree Fahrenheit from hydrostatic expansion?
(pg. 1-12)
A) Between 50 and 100 PSI
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B) Between 100 and 150 PSI
C) Between 180 and 190 PSI
D) Between 200 and 300 PSI -Correct Answer ✔B) Between 100 and 150 PSI
When working on an ammonia refrigeration system, it is the responsibility of who
to use the proper PPE? (pg. 1-4)
A) As mandated by OSHA regulations for the task
B) The owner of the facility
C) As stated in the RMP/PSM safety program
D) The technician or operator -Correct Answer ✔D) The technician or operator
OSHA regulations require persons wearing respiratory protective equipment to
have? (pg. 1-7)
A) No mustache
B) Rubber boots and gloves
C) A medical evaluation to confirm fitness to wear the PPE
D) Side shielded safety glasses -Correct Answer ✔C) A medical evaluation to
confirm fitness to wear the PPE
A hot work permit is NOT required if ____________? (pg. 1-7)
A) There are no combustible materials where the work is being performed
B) You have a person that is designated as a fire watch and have a fire extinguisher
ready
C) The owner of the property does not require the use of hot work permit
D) You are not using a welder or cutting torches, only using a grinder -Correct
Answer ✔A) There are no combustible materials where the work is being
performed
Lockout/Tagout is required ____________? (pg. 1-10)
A) When work is done inside the building
B) Only when moving parts can but off body parts or smash fingers
C) Anytime work exposes an employee to hazardous energy
D) When work is done on the roof -Correct Answer ✔C) Anytime work exposes an
employee to hazardous energy
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Whose responsibility is it to determine if an area is considered confined space?
(pg. 1-11)
A) The owner/employer
B) The employee that is going to be working in the area
C) Your immediate supervisor
D) OSHA -Correct Answer ✔A) The owner/employer
Fire watchers must be trained in ____________? (pg. 1-8)
A) Recognizing potential combustible material locations at the facility
B) The use of fire extinguishing equipment
C) CPR
D) Confined space entry requirements -Correct Answer ✔B) The use of fire
extinguishing equipment
The reason for testing the application of a lockout device is to ________? (pg. 1-
11)
A) Prove that the LOTO procedure is being followed completely
B) Be sure there is no back feed to the circuit from another source
C) Be sure that the lockout was applied to the correct device
D) Confirm that the energy source has indeed been made safe -Correct Answer
✔D) Confirm that the energy source has indeed been made safe
Compressor safety system checks should be conducted? (pg. 2-11)
A) Daily
B) Quarterly
C) Monthly
D) Annually -Correct Answer ✔D) Annually
The primary advantage of using refrigerant instead of water to cool a compressor
head is? (pg. 2-20)
A) Refrigerant has greater cooling capacity
B) Refrigerant is easier to pump
C) Refrigerant has lower weight per gallon
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D) Refrigerant is less expensive -Correct Answer ✔A) Refrigerant has greater
cooling capacity
Cooling screw compressors is usually accomplished by cooling the? (pg. 2-22)
A) Water
B) Refrigerant
C) Engine Room
D) Oil -Correct Answer ✔D) Oil
After re-aligning the shafts on any driven equipment, it's a good idea to perform?
(pg. 2-28)
A) A hazard analysis
B) An oil change
C) A vibration analysis
D) An energy audit -Correct Answer ✔C) A vibration analysis
A compressor's high-pressure cutout set point may NOT exceed ____________%
of the associated pressure relief valve's set point? (pg. 2-14)
A) 80
B) 90
C) 75
D) 95 -Correct Answer ✔B) 90
On most compressors, the primary way of separating oil from the discharge
refrigerant gas is by reducing the? (pg. 2-45)
A) Suction pressure
B) Discharge piping size
C) Suction temperature
D) Discharge gas velocity -Correct Answer ✔D) Discharge gas velocity
Vibration analysis is valuable in predicting compressor? (pg. 2-28)
A) Oil flow
B) Capacity drop
C) Bearing failure
RETA
RETA Industrial Refrigeration Book 3 (2023 Revision)
Exam Study Questions and Answers UPDATED 2025
What is the purpose of an SOP? (pg. 1-3)
A) To break down the amount of work to be done in a given time
B) To read after the job is done
C) To provide guidance and specific steps necessary to safely operate the system
D) To provide a standard way to perform the job faster -Correct Answer ✔C) To
provide guidance and specific steps necessary to safely operate the system
Where can you find a list of the proper PPE needed to safely perform your job
tasks? (pg. 1-4)
A) SOPs and MPs
B) Safety Data Sheet
C) Risk Management Plan
D) Hazardous Material Business Plan -Correct Answer ✔A) SOPs and MPs
Which of the following requires hot work permits? (pg. 1-7)
A) The safety officer
B) OSHA regulations
C) The superintendent of the jobsite
D) Standard operating procedures -Correct Answer ✔B) OSHA regulations
What can trapping liquid cause? (pg. 1-12)
A) A possible release
B) Reduced refrigerant flow
C) The system to pump down
D) A safe condition for isolated components -Correct Answer ✔A) A possible
release
How much pressure can build per degree Fahrenheit from hydrostatic expansion?
(pg. 1-12)
A) Between 50 and 100 PSI
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,RETA
B) Between 100 and 150 PSI
C) Between 180 and 190 PSI
D) Between 200 and 300 PSI -Correct Answer ✔B) Between 100 and 150 PSI
When working on an ammonia refrigeration system, it is the responsibility of who
to use the proper PPE? (pg. 1-4)
A) As mandated by OSHA regulations for the task
B) The owner of the facility
C) As stated in the RMP/PSM safety program
D) The technician or operator -Correct Answer ✔D) The technician or operator
OSHA regulations require persons wearing respiratory protective equipment to
have? (pg. 1-7)
A) No mustache
B) Rubber boots and gloves
C) A medical evaluation to confirm fitness to wear the PPE
D) Side shielded safety glasses -Correct Answer ✔C) A medical evaluation to
confirm fitness to wear the PPE
A hot work permit is NOT required if ____________? (pg. 1-7)
A) There are no combustible materials where the work is being performed
B) You have a person that is designated as a fire watch and have a fire extinguisher
ready
C) The owner of the property does not require the use of hot work permit
D) You are not using a welder or cutting torches, only using a grinder -Correct
Answer ✔A) There are no combustible materials where the work is being
performed
Lockout/Tagout is required ____________? (pg. 1-10)
A) When work is done inside the building
B) Only when moving parts can but off body parts or smash fingers
C) Anytime work exposes an employee to hazardous energy
D) When work is done on the roof -Correct Answer ✔C) Anytime work exposes an
employee to hazardous energy
RETA
,RETA
Whose responsibility is it to determine if an area is considered confined space?
(pg. 1-11)
A) The owner/employer
B) The employee that is going to be working in the area
C) Your immediate supervisor
D) OSHA -Correct Answer ✔A) The owner/employer
Fire watchers must be trained in ____________? (pg. 1-8)
A) Recognizing potential combustible material locations at the facility
B) The use of fire extinguishing equipment
C) CPR
D) Confined space entry requirements -Correct Answer ✔B) The use of fire
extinguishing equipment
The reason for testing the application of a lockout device is to ________? (pg. 1-
11)
A) Prove that the LOTO procedure is being followed completely
B) Be sure there is no back feed to the circuit from another source
C) Be sure that the lockout was applied to the correct device
D) Confirm that the energy source has indeed been made safe -Correct Answer
✔D) Confirm that the energy source has indeed been made safe
Compressor safety system checks should be conducted? (pg. 2-11)
A) Daily
B) Quarterly
C) Monthly
D) Annually -Correct Answer ✔D) Annually
The primary advantage of using refrigerant instead of water to cool a compressor
head is? (pg. 2-20)
A) Refrigerant has greater cooling capacity
B) Refrigerant is easier to pump
C) Refrigerant has lower weight per gallon
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, RETA
D) Refrigerant is less expensive -Correct Answer ✔A) Refrigerant has greater
cooling capacity
Cooling screw compressors is usually accomplished by cooling the? (pg. 2-22)
A) Water
B) Refrigerant
C) Engine Room
D) Oil -Correct Answer ✔D) Oil
After re-aligning the shafts on any driven equipment, it's a good idea to perform?
(pg. 2-28)
A) A hazard analysis
B) An oil change
C) A vibration analysis
D) An energy audit -Correct Answer ✔C) A vibration analysis
A compressor's high-pressure cutout set point may NOT exceed ____________%
of the associated pressure relief valve's set point? (pg. 2-14)
A) 80
B) 90
C) 75
D) 95 -Correct Answer ✔B) 90
On most compressors, the primary way of separating oil from the discharge
refrigerant gas is by reducing the? (pg. 2-45)
A) Suction pressure
B) Discharge piping size
C) Suction temperature
D) Discharge gas velocity -Correct Answer ✔D) Discharge gas velocity
Vibration analysis is valuable in predicting compressor? (pg. 2-28)
A) Oil flow
B) Capacity drop
C) Bearing failure
RETA
