RETA Industrial Refrigeration Book 3
RETA INDUSTRIAL REFRIGERATION BOOK 3 EXAM NEWEST 2025
COMPLETE 200 QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
The purpose of the vapor retarder on pipe insulation is to? (pg. 6-3)
A) Keep heat from getting into the refrigeration system
B) Keep moisture from dripping onto production equipment
C) Keep moisture from leaking out onto the roof
D) Keep moisture from getting to the pipe and starting corrosion - D) Keep moisture from
getting to the pipe and starting corrosion
Ultrasound thicknesses should be compared to thickness of vessels listed on? (pg. 6-4)
A) The ASME plate
B) The shop drawings
C) The U1 forms
D) The manufacturer's catalog - C) The U1 forms
Insulation failure may cause ___________ to grow on the bottom of the refrigeration piping?
(pg. 6-5)
A) Blue slime
B) Algae
C) Spores
D) Red slime - B) Algae
Because of the importance of a good vapor barrier, insulation repairs for non-destructive testing
accesses should be made promptly by? (pg. 6-13)
A) Insulation professionals
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, RETA Industrial Refrigeration Book 3
B) Maintenance personnel
C) Refrigeration operators
D) Plant supervisors - A) Insulation professionals
Moisture in the air? (pg. 6-5)
A) Will not get through the insulation
B) Will not harm the insulation only the steel pipe
C) Will not cause damage to the steel pipe
D) Will be attracted to the coldest part of the refrigeration system because of vapor pressure
difference - D) Will be attracted to the coldest part of the refrigeration system because of vapor
pressure difference
The vapor retarder? (pg. 6-2)
A) Is the same as the jacket as long as it is sealed correctly
B) Is not that important to the insulation system because it is so thin it does not stop heat
transfer from happening
C) Needs to be installed on the warm side of the insulation
D) Needs to be applied against the pipe from one end to the other - C) Needs to be installed on
the warm side of the insulation
At a minimum, insulation areas should be inspected? (pg. 6-6)
A) Every five years for the mechanical integrity audit
B) Monthly
C) Every day during the walk-through
D) Annually - D) Annually
Before any penetration is made into insulation, personnel need to do some? (pg. 6-9)
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, RETA Industrial Refrigeration Book 3
A) Cutting
B) Careful planning
C) Scraping
D) Taping - B) Careful planning
Blackened aluminum jacketing in the vicinity of a valve group is a sign of? (pg. 6-4)
A) Moisture intrusion
B) A cold spot
C) An ammonia leak
D) A hot spot - C) An ammonia leak
Penetrations made for inspections should be located? (pg. 6-11)
A) On the top half of the horizontal surface
B) On the bottom half of the horizontal surface
C) At 45 degree angle from the top of the horizontal surface
D) At a 90 degree angle from the top of the horizontal surface - B) On the bottom half of the
horizontal surface
There is a significant difference in procedure and practice when installing cold piping insulation
compared to steam or high temperature systems because? (pg. 6-15)
A) The securing practice for high temperature piping does not require banding a jacket to the
insulation
B) Exterior jacket choices are limited for high temperature applications
C) The type of "cell construction" of high temperature insulation is not important
D) The high temp system drives the water vapor away from the pipe - D) The high temp system
drives the water vapor away from the pipe
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, RETA Industrial Refrigeration Book 3
Which of the following can results from untimely or ineffective maintenance of a mechanical
insulation system? (pg. 6-7)
A) Corrosion under insulation
B) Increased life span of the insulation system
C) Decreased maintenance costs
D) Decreased energy cost - A) Corrosion under insulation
Inspection of evaporator coils, fans, drain pans, bolts, etc., are part of _________?
(pg. 7-2)
A) Hazard assessment
B) Mechanical integrity
C) Non-destructive testing
D) Risk management plan - B) Mechanical integrity
After defrost is complete, a large evaporator needs to go through a depressurization phase to
prevent? (pg. 7-25)
A) Hydraulic shock
B) Static pressure
C) Bottling up
D) Water carryover - A) Hydraulic shock
When defrosting is performed on an evaporator that does not have enough frost on it, the
result can be? (pg. 7-25)
A) Refrigerant leaks from overheated flange gaskets
B) The coil builds ice on the bottom circuit
C) Coils clear of frost
D) Bridging the defrost drain opening by ice - D) Bridging the defrost drain opening by ice
4|Page
RETA INDUSTRIAL REFRIGERATION BOOK 3 EXAM NEWEST 2025
COMPLETE 200 QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
The purpose of the vapor retarder on pipe insulation is to? (pg. 6-3)
A) Keep heat from getting into the refrigeration system
B) Keep moisture from dripping onto production equipment
C) Keep moisture from leaking out onto the roof
D) Keep moisture from getting to the pipe and starting corrosion - D) Keep moisture from
getting to the pipe and starting corrosion
Ultrasound thicknesses should be compared to thickness of vessels listed on? (pg. 6-4)
A) The ASME plate
B) The shop drawings
C) The U1 forms
D) The manufacturer's catalog - C) The U1 forms
Insulation failure may cause ___________ to grow on the bottom of the refrigeration piping?
(pg. 6-5)
A) Blue slime
B) Algae
C) Spores
D) Red slime - B) Algae
Because of the importance of a good vapor barrier, insulation repairs for non-destructive testing
accesses should be made promptly by? (pg. 6-13)
A) Insulation professionals
1|Page
, RETA Industrial Refrigeration Book 3
B) Maintenance personnel
C) Refrigeration operators
D) Plant supervisors - A) Insulation professionals
Moisture in the air? (pg. 6-5)
A) Will not get through the insulation
B) Will not harm the insulation only the steel pipe
C) Will not cause damage to the steel pipe
D) Will be attracted to the coldest part of the refrigeration system because of vapor pressure
difference - D) Will be attracted to the coldest part of the refrigeration system because of vapor
pressure difference
The vapor retarder? (pg. 6-2)
A) Is the same as the jacket as long as it is sealed correctly
B) Is not that important to the insulation system because it is so thin it does not stop heat
transfer from happening
C) Needs to be installed on the warm side of the insulation
D) Needs to be applied against the pipe from one end to the other - C) Needs to be installed on
the warm side of the insulation
At a minimum, insulation areas should be inspected? (pg. 6-6)
A) Every five years for the mechanical integrity audit
B) Monthly
C) Every day during the walk-through
D) Annually - D) Annually
Before any penetration is made into insulation, personnel need to do some? (pg. 6-9)
2|Page
, RETA Industrial Refrigeration Book 3
A) Cutting
B) Careful planning
C) Scraping
D) Taping - B) Careful planning
Blackened aluminum jacketing in the vicinity of a valve group is a sign of? (pg. 6-4)
A) Moisture intrusion
B) A cold spot
C) An ammonia leak
D) A hot spot - C) An ammonia leak
Penetrations made for inspections should be located? (pg. 6-11)
A) On the top half of the horizontal surface
B) On the bottom half of the horizontal surface
C) At 45 degree angle from the top of the horizontal surface
D) At a 90 degree angle from the top of the horizontal surface - B) On the bottom half of the
horizontal surface
There is a significant difference in procedure and practice when installing cold piping insulation
compared to steam or high temperature systems because? (pg. 6-15)
A) The securing practice for high temperature piping does not require banding a jacket to the
insulation
B) Exterior jacket choices are limited for high temperature applications
C) The type of "cell construction" of high temperature insulation is not important
D) The high temp system drives the water vapor away from the pipe - D) The high temp system
drives the water vapor away from the pipe
3|Page
, RETA Industrial Refrigeration Book 3
Which of the following can results from untimely or ineffective maintenance of a mechanical
insulation system? (pg. 6-7)
A) Corrosion under insulation
B) Increased life span of the insulation system
C) Decreased maintenance costs
D) Decreased energy cost - A) Corrosion under insulation
Inspection of evaporator coils, fans, drain pans, bolts, etc., are part of _________?
(pg. 7-2)
A) Hazard assessment
B) Mechanical integrity
C) Non-destructive testing
D) Risk management plan - B) Mechanical integrity
After defrost is complete, a large evaporator needs to go through a depressurization phase to
prevent? (pg. 7-25)
A) Hydraulic shock
B) Static pressure
C) Bottling up
D) Water carryover - A) Hydraulic shock
When defrosting is performed on an evaporator that does not have enough frost on it, the
result can be? (pg. 7-25)
A) Refrigerant leaks from overheated flange gaskets
B) The coil builds ice on the bottom circuit
C) Coils clear of frost
D) Bridging the defrost drain opening by ice - D) Bridging the defrost drain opening by ice
4|Page
