RETA Industrial Refrigeration Book 3 Exam
| Complete Questions and Correct Answers
| Graded A+ | Verified Answers | Latest
Version 2025
If you are having problems with the capacity of your condenser, you should
check? (pg. 4-22)
A) Wet bulb temperature of the inlet air compared to the surrounding area
B) The fit of the eliminators
C) Motor horsepower
D) For white rust buildup in the condenser ---------CORRECT ANSWER-----------------
A) Wet bulb temperature of the inlet air compared to the surrounding area
To keep all condensers performing efficiently and safely, they require regular?
(pg. 4-9)
A) Inspections and maintenance
B) Pressure washing
C) Acid cleaning
D) Replacement ---------CORRECT ANSWER-----------------A) Inspections and
maintenance
Rust that forms under scale _____________? (pg. 4-20)
,A) Is insulated from moisture and air such that it ceases to develop
B) Can be removed with an acid treatment
C) Does not change the heat transfer capability of the condenser tube
D) Can lift the scale off the tubing by its expansion ---------CORRECT ANSWER--------
---------D) Can lift the scale off the tubing by its expansion
A matched set of belts are? (pg. 4-23)
A) Likely to stretch the same amount when put in service
B) As effective as a banded set of belts
C) Sized identically
D) Adjusted 48 hours after installation ---------CORRECT ANSWER-----------------C)
Sized identically
MAWP is ____________ ? (pg. 5-4)
A) The minimum pressure that a relief valve pressure setting can be
B) The system design pressure
C) Mandated by code
D) The maximum pressure at a certain temperature that a vessel cannot operate
beyond ---------CORRECT ANSWER-----------------D) The maximum pressure at a
certain temperature that a vessel cannot operate beyond
Pressure relief valves can be ____________? (pg. 5-9)
A) Used in tandem with high level float switches
,B) Set at the MAWP or less
C) Used ahead of same pressure rupture discs
D) Used in a series ---------CORRECT ANSWER-----------------B) Set at the MAWP or
less
Rupture discs ____________? (pg. 5-11)
A) Can be re-used after they have relieved pressure
B) Burst at a specific pressure
C) Have greater flow capacity than a pressure relief valve
D) Are forbidden by code from being used in a conjunction with a PRV as it acts
like a closed hand valve ahead of the PRV ---------CORRECT ANSWER-----------------
B) Burst at a specific pressure
U-1 forms are ____________? (pg. 5-6)
A) Required to be on file with the National Board for Unfired Pressure Vessels for
retrieval of specific information about the vessel
B) To be on display near the vessel it represents
C) Manufacture's data reports for the pressure vessel that lists the technical
specifications of a manufactured vessel
D) Sent to the manufacture's customer when the order for the vessel is placed ----
-----CORRECT ANSWER-----------------C) Manufacture's data reports for the pressure
vessel that lists the technical specifications of a manufactured vessel
, How often must the insulation be removed for inspection from a vessel that
works at 20°F year round? (pg. 5-12)
A) Every five years in conjunction with the Mechanical Integrity audit require in
the PSM program
B) When evidence of vapor retarder failure is noted, and even then, the
inspection is limited to just the affected area
C) Annually during the Standard 6 inspection
D) Never, since 20°F isn't cold enough to attract water vapor to the cold surface
under the insulation ---------CORRECT ANSWER-----------------B) When evidence of
vapor retarder failure is noted, and even then, the inspection is limited to just the
affected area
Post Weld Heat Treatment ____________ ? (pg. 5-8)
A) Guarantees that stress corrosion cracking will not occur in an ammonia
refrigeration vessel
B) Benefits only the heads and shell of a refrigeration vessel
C) Is mandatory on all refrigeration vessels
D) Helps to prevent stress corrosion cracking in vessels ---------CORRECT ANSWER--
---------------D) Helps to prevent stress corrosion cracking in vessels
Level detecting float switches ____________ ? (pg. 5-16)
A) Are required by code to be wired to directly supply the liquid make up control
valve with current to open the solenoid valve
B) Are provided with polarity sensitive wiring for D.C. controlled solenoid valves
| Complete Questions and Correct Answers
| Graded A+ | Verified Answers | Latest
Version 2025
If you are having problems with the capacity of your condenser, you should
check? (pg. 4-22)
A) Wet bulb temperature of the inlet air compared to the surrounding area
B) The fit of the eliminators
C) Motor horsepower
D) For white rust buildup in the condenser ---------CORRECT ANSWER-----------------
A) Wet bulb temperature of the inlet air compared to the surrounding area
To keep all condensers performing efficiently and safely, they require regular?
(pg. 4-9)
A) Inspections and maintenance
B) Pressure washing
C) Acid cleaning
D) Replacement ---------CORRECT ANSWER-----------------A) Inspections and
maintenance
Rust that forms under scale _____________? (pg. 4-20)
,A) Is insulated from moisture and air such that it ceases to develop
B) Can be removed with an acid treatment
C) Does not change the heat transfer capability of the condenser tube
D) Can lift the scale off the tubing by its expansion ---------CORRECT ANSWER--------
---------D) Can lift the scale off the tubing by its expansion
A matched set of belts are? (pg. 4-23)
A) Likely to stretch the same amount when put in service
B) As effective as a banded set of belts
C) Sized identically
D) Adjusted 48 hours after installation ---------CORRECT ANSWER-----------------C)
Sized identically
MAWP is ____________ ? (pg. 5-4)
A) The minimum pressure that a relief valve pressure setting can be
B) The system design pressure
C) Mandated by code
D) The maximum pressure at a certain temperature that a vessel cannot operate
beyond ---------CORRECT ANSWER-----------------D) The maximum pressure at a
certain temperature that a vessel cannot operate beyond
Pressure relief valves can be ____________? (pg. 5-9)
A) Used in tandem with high level float switches
,B) Set at the MAWP or less
C) Used ahead of same pressure rupture discs
D) Used in a series ---------CORRECT ANSWER-----------------B) Set at the MAWP or
less
Rupture discs ____________? (pg. 5-11)
A) Can be re-used after they have relieved pressure
B) Burst at a specific pressure
C) Have greater flow capacity than a pressure relief valve
D) Are forbidden by code from being used in a conjunction with a PRV as it acts
like a closed hand valve ahead of the PRV ---------CORRECT ANSWER-----------------
B) Burst at a specific pressure
U-1 forms are ____________? (pg. 5-6)
A) Required to be on file with the National Board for Unfired Pressure Vessels for
retrieval of specific information about the vessel
B) To be on display near the vessel it represents
C) Manufacture's data reports for the pressure vessel that lists the technical
specifications of a manufactured vessel
D) Sent to the manufacture's customer when the order for the vessel is placed ----
-----CORRECT ANSWER-----------------C) Manufacture's data reports for the pressure
vessel that lists the technical specifications of a manufactured vessel
, How often must the insulation be removed for inspection from a vessel that
works at 20°F year round? (pg. 5-12)
A) Every five years in conjunction with the Mechanical Integrity audit require in
the PSM program
B) When evidence of vapor retarder failure is noted, and even then, the
inspection is limited to just the affected area
C) Annually during the Standard 6 inspection
D) Never, since 20°F isn't cold enough to attract water vapor to the cold surface
under the insulation ---------CORRECT ANSWER-----------------B) When evidence of
vapor retarder failure is noted, and even then, the inspection is limited to just the
affected area
Post Weld Heat Treatment ____________ ? (pg. 5-8)
A) Guarantees that stress corrosion cracking will not occur in an ammonia
refrigeration vessel
B) Benefits only the heads and shell of a refrigeration vessel
C) Is mandatory on all refrigeration vessels
D) Helps to prevent stress corrosion cracking in vessels ---------CORRECT ANSWER--
---------------D) Helps to prevent stress corrosion cracking in vessels
Level detecting float switches ____________ ? (pg. 5-16)
A) Are required by code to be wired to directly supply the liquid make up control
valve with current to open the solenoid valve
B) Are provided with polarity sensitive wiring for D.C. controlled solenoid valves
