CIRO: RETA Book 1 Study Guide Exam
Questions and All Actual Detailed
Answers 2026 Updated.
What is the purpose of an SOP?
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. - Answer C. to provide guidance and
specific steps necessary to safely operate the system.
Where can a list of the proper PPE needed to safely preform a job task?
A. SOPs and MPs
B. Safety data sheet
C. risk management plan
D.Hazardous material business plan - Answer A. SOPs and MPs
Which of the following requires hot work permits?
A. The local fire department
B. OSHA regulations
C. The HR department
D. EPA regulations - Answer B. OSHA regulations
What can be caused by trapped liquid?
A. a possible release
B. Excess refrigerant flow
C. The system to pump down
D. A safe condition for isolated components - Answer A. A possible release
How much can the pressure of trapped liquid increase per degree Fahrenheit of temperature
increase
A. Between 50 and 100 psi
B. Between 100 and 150 psi
C. Between 180 and 190 psi
D. Between 200 and 300 Psi - Answer B. Between 100 and 150 psi
,When working on an ammonia refrigeration system, which of the following has the
responsibility to use the proper PPE?
A. As mandated by EPA regulations
B. The owner of the facility
C. The HR department
D. The technician or operator - Answer D. The technician or operator
OSHA regulations require persons wearing respiratory protective equipment to have_____
A. no mustache
B. rubber boats and gloves
C. a medical evaluation to confirm fitness to wear the PPE.
D. side shielded safety glasses - Answer C. a medical evaluation to confirm fitness to wear the
PPE.
Lockout/Tagout required___
A. when work is done inside the building
B. only when moving parts can cut off body parts or smash fingers
C. anytime work exposes an employee to hazardous energy
D. when work is done on the roof - Answer C. anytime work exposes an employee to
hazardous energy
Which of the following is responsible to determine if an area is considered confined space?
A. the owner/employer
B. the employee that is going to be working in the area
C. the supervisor
D. OSHA - Answer A. the owner/employer
Fire watchers mist be trained in___
A. recognizing potential combustible material locations at the facility.
B. The use of fire extinguishing equipment
C. CPR
D. confined space entry requirements - Answer B. The use of fire extinguishing equipment
The reason for testing the application of a lockout device is to___
A. show your manager the LOTO procedure
,B. ensure that your multi-meter is working correctly
C. conform tot he OSHA regulations for electrical gear.
D. confirm that the energy source has indeed been made safe. - Answer D. confirm that the
energy source has indeed been made safe.
During an arc flash event, hat is the conductor?
A. hard rather than soft rubber shoe soles
B. The disconnect handle
C. The water in a hose that is too close
D. The air - Answer D. The air
As an ask flash fault continues, the arc explosion expansion is estimated to be how large?
A. 40,000 to 1
B. relatively small compared to mot explosions
C. about the same size as a typical ammonia explosion
D. 10 atmospheres - Answer A. 40,000 to 1
What is the purpose of a refrigeration system?
a. To freeze food
b. To cool buildings
c. To preserve food
d. To maintain a temperature - Answer D. To maintain a temperaure
Operators must keep refrigeration systems operating safely and term-69efficiently. Which of the
following best describes the areas of required knowledge for this to be possible?
a. Basic physical principles, interpretation of information from temperature and pressure
gauges, basic operating principles.
b. Basic physical principles, interpretation of information from temperature and pressure
gauges, manufacturer of the equipment
c. Interpretation of information from temperature and pressure gauges, basic operating
principles, company quality control policies and procedures.
d. Interpretation of information from temperature and pressure gauges, manufacturer of the
equipment, company quality control policies and procedures. - Answer a. Basic physical
principles, interpretation of information from temperature and pressure gauges, basic operating
principles.
Mechanical refrigeration is a series of steps that
, a. moves heat energy from a space or object to an area where it can do no harm.
b. adds cold to a space or object.
c. transforms heat energy into cold energy to reduce the temperature of the area to be cooled.
d. utilizes the cooling effect of compressing a gas to reduce the temperature in a space or
object. - Answer a. moves heat energy from a space or object to an area where it can do no
harm.
Heat energy always flows
a. from a substance with more heat energy to a substance with less
heat energy.
b. regardless of temperature.
c. from an object at a higher temperature to an object at a lower temperature.
d. from a liquid to a vapor. - Answer c. from an object at a higher temperature to an object at
a lower temperature.
Sensible heat
a. is measured using a pressure gauge.
b. is always between 32 and 212 degrees Fahrenheit.
c. is heat energy that causes a change of state but does not cause a change in temperature.
d. is heat energy that causes a change in temperature but does not cause a change of state. -
Answer d. is heat energy that causes a change in temperature but does not cause a change of
state
Latent heat
a. is measured using a pressure gauge.
b. can be sensed by using a thermometer.
c. is heat energy that causes a change of state but does not cause a change in temperature.
d. is heat energy that causes a change in temperature but does not cause a change of state. -
Answer c. is heat energy that causes a change of state but does not cause a change in
temperature.
Which of the answers below is an example of heat transfer by convection?
a. The sun's rays hitting a roof.
b. A rod that is heated on one end resulting in a temperature change at the other end.
c. Warm air rising and cold air falling.
d. Heat transferred to a pan setting on an electric hot plate. - Answer c. Warm air rising and
cold air falling.
Questions and All Actual Detailed
Answers 2026 Updated.
What is the purpose of an SOP?
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. - Answer C. to provide guidance and
specific steps necessary to safely operate the system.
Where can a list of the proper PPE needed to safely preform a job task?
A. SOPs and MPs
B. Safety data sheet
C. risk management plan
D.Hazardous material business plan - Answer A. SOPs and MPs
Which of the following requires hot work permits?
A. The local fire department
B. OSHA regulations
C. The HR department
D. EPA regulations - Answer B. OSHA regulations
What can be caused by trapped liquid?
A. a possible release
B. Excess refrigerant flow
C. The system to pump down
D. A safe condition for isolated components - Answer A. A possible release
How much can the pressure of trapped liquid increase per degree Fahrenheit of temperature
increase
A. Between 50 and 100 psi
B. Between 100 and 150 psi
C. Between 180 and 190 psi
D. Between 200 and 300 Psi - Answer B. Between 100 and 150 psi
,When working on an ammonia refrigeration system, which of the following has the
responsibility to use the proper PPE?
A. As mandated by EPA regulations
B. The owner of the facility
C. The HR department
D. The technician or operator - Answer D. The technician or operator
OSHA regulations require persons wearing respiratory protective equipment to have_____
A. no mustache
B. rubber boats and gloves
C. a medical evaluation to confirm fitness to wear the PPE.
D. side shielded safety glasses - Answer C. a medical evaluation to confirm fitness to wear the
PPE.
Lockout/Tagout required___
A. when work is done inside the building
B. only when moving parts can cut off body parts or smash fingers
C. anytime work exposes an employee to hazardous energy
D. when work is done on the roof - Answer C. anytime work exposes an employee to
hazardous energy
Which of the following is responsible to determine if an area is considered confined space?
A. the owner/employer
B. the employee that is going to be working in the area
C. the supervisor
D. OSHA - Answer A. the owner/employer
Fire watchers mist be trained in___
A. recognizing potential combustible material locations at the facility.
B. The use of fire extinguishing equipment
C. CPR
D. confined space entry requirements - Answer B. The use of fire extinguishing equipment
The reason for testing the application of a lockout device is to___
A. show your manager the LOTO procedure
,B. ensure that your multi-meter is working correctly
C. conform tot he OSHA regulations for electrical gear.
D. confirm that the energy source has indeed been made safe. - Answer D. confirm that the
energy source has indeed been made safe.
During an arc flash event, hat is the conductor?
A. hard rather than soft rubber shoe soles
B. The disconnect handle
C. The water in a hose that is too close
D. The air - Answer D. The air
As an ask flash fault continues, the arc explosion expansion is estimated to be how large?
A. 40,000 to 1
B. relatively small compared to mot explosions
C. about the same size as a typical ammonia explosion
D. 10 atmospheres - Answer A. 40,000 to 1
What is the purpose of a refrigeration system?
a. To freeze food
b. To cool buildings
c. To preserve food
d. To maintain a temperature - Answer D. To maintain a temperaure
Operators must keep refrigeration systems operating safely and term-69efficiently. Which of the
following best describes the areas of required knowledge for this to be possible?
a. Basic physical principles, interpretation of information from temperature and pressure
gauges, basic operating principles.
b. Basic physical principles, interpretation of information from temperature and pressure
gauges, manufacturer of the equipment
c. Interpretation of information from temperature and pressure gauges, basic operating
principles, company quality control policies and procedures.
d. Interpretation of information from temperature and pressure gauges, manufacturer of the
equipment, company quality control policies and procedures. - Answer a. Basic physical
principles, interpretation of information from temperature and pressure gauges, basic operating
principles.
Mechanical refrigeration is a series of steps that
, a. moves heat energy from a space or object to an area where it can do no harm.
b. adds cold to a space or object.
c. transforms heat energy into cold energy to reduce the temperature of the area to be cooled.
d. utilizes the cooling effect of compressing a gas to reduce the temperature in a space or
object. - Answer a. moves heat energy from a space or object to an area where it can do no
harm.
Heat energy always flows
a. from a substance with more heat energy to a substance with less
heat energy.
b. regardless of temperature.
c. from an object at a higher temperature to an object at a lower temperature.
d. from a liquid to a vapor. - Answer c. from an object at a higher temperature to an object at
a lower temperature.
Sensible heat
a. is measured using a pressure gauge.
b. is always between 32 and 212 degrees Fahrenheit.
c. is heat energy that causes a change of state but does not cause a change in temperature.
d. is heat energy that causes a change in temperature but does not cause a change of state. -
Answer d. is heat energy that causes a change in temperature but does not cause a change of
state
Latent heat
a. is measured using a pressure gauge.
b. can be sensed by using a thermometer.
c. is heat energy that causes a change of state but does not cause a change in temperature.
d. is heat energy that causes a change in temperature but does not cause a change of state. -
Answer c. is heat energy that causes a change of state but does not cause a change in
temperature.
Which of the answers below is an example of heat transfer by convection?
a. The sun's rays hitting a roof.
b. A rod that is heated on one end resulting in a temperature change at the other end.
c. Warm air rising and cold air falling.
d. Heat transferred to a pan setting on an electric hot plate. - Answer c. Warm air rising and
cold air falling.
