BOILERMAKER NCCR EXAM 2024 | ACTUAL EXAM
QUESTIONS AND THOROUGH DETAILED ANSWRS | EXPERT
ENDORSED FOR GUARANTEED PASS | CURRENT VERSION
What should be used to plug a tube at either end of a well to prevent air circulation? - CORRECT
ANSWER - Purge paper
What should be done before furnace fittings for tube replacements are ground? - CORRECT
ANSWER - The inside of the fitting should be inspected
A reboiler in a tower is being hydrotested. The water should be at what level? - CORRECT
ANSWER - Above the re-boiler
What is the preferred socket for tray work? - CORRECT ANSWER - 12 point
How many types of bubble caps are there? - CORRECT ANSWER - 6
Why does a boilermaker use a test tree that has a bleed valve when hydrotesting as exchanger -
CORRECT ANSWER - To drain condensation
What determines the type of bolts to be put back in an exchanger so that it can be bolted back
together? - CORRECT ANSWER - The service of the exchanger
What type of exchanger needs only one end for plugging tubes? - CORRECT ANSWER -
Hairpin
The tube to tube sheet joint achieved by mechanical or explosive expansion of the tube hole in
the tube sheet is the? - CORRECT ANSWER - Expansion joint "J" Factor
What type of tank has legs on the roof? - CORRECT ANSWER - Floating roof
,What information is required to locate a nozzle that will be installed on a vessel shell? -
CORRECT ANSWER - The elevation and degree of the center-line of the nozzle
The variable spring on s spring type hangar should be adjusted to what position before the
pipeline is put into service? - CORRECT ANSWER - Cold
All of the following are possible reasons can overloading except? - CORRECT ANSWER -
incorrect orientation of the support
What problems are associated with tube rolling - CORRECT ANSWER - Improper expanding
and depth
Why is a Monel Gasket used in HF acid piping? - CORRECT ANSWER - Because of its high
resistance to acid.
Which of the following are required when test blinds are installed? - CORRECT ANSWER -
longer bolts
Which of the following are used to prevent tubes from sagging because of weight? - CORRECT
ANSWER - Baffles
What is the are of a concrete slab that is 25-feet 6-inches long and 10-feet wide? - CORRECT
ANSWER - 255 Sqft
Which gas passes through the center of a cutting torch tip? - CORRECT ANSWER - Oxygen
Add the following fraction and reduce to the lowest common denominator. 24 5/8+13 15/16+8
1/4 - CORRECT ANSWER - 46 13/16
On a blueprint, 1/4"=1' means? - CORRECT ANSWER - 1 inch on the drawing equals 1 foot of
actual size
, A major component of a tower is a? - CORRECT ANSWER - Downcomer
What is indicated by the notation "3-inch, 150#" on an isometric drawing. - CORRECT
ANSWER - 3-inch diameter, 150# Flange
What is the preferred type of rigging material used to lift a coated pipe? - CORRECT ANSWER
- Nylon slings/straps
The best source for information about welding on a tube is the - CORRECT ANSWER - QA/QC
Equal width grating panels are being unloaded on the job site. One piece measures 4 1/2 FT in
width. There are 7 panels, what is the total width when all the panels are laid side-by-side? -
CORRECT ANSWER - 31 1/2 FT
What is the demister pad used for? - CORRECT ANSWER - Filtering chemicals and vapors
Who is responsible for blocking valves that isolate a reboiler before work is begun? - CORRECT
ANSWER - Operations
The channel head cover on an exchanger is used on the - CORRECT ANSWER - Tube side
What type of steel beams are attached to the furnace wall with clips to contain a boilers
horizontal expansion? - CORRECT ANSWER - Buckstays
Who determines the size and type of spring can be used? - CORRECT ANSWER - Engineer
How many bolts must be removed so that a 3-inch 150# flange can be hot bolted? - CORRECT
ANSWER - 0
How often must entry permits be updated during normal working hours. - CORRECT ANSWER
- At the end of each shift change
QUESTIONS AND THOROUGH DETAILED ANSWRS | EXPERT
ENDORSED FOR GUARANTEED PASS | CURRENT VERSION
What should be used to plug a tube at either end of a well to prevent air circulation? - CORRECT
ANSWER - Purge paper
What should be done before furnace fittings for tube replacements are ground? - CORRECT
ANSWER - The inside of the fitting should be inspected
A reboiler in a tower is being hydrotested. The water should be at what level? - CORRECT
ANSWER - Above the re-boiler
What is the preferred socket for tray work? - CORRECT ANSWER - 12 point
How many types of bubble caps are there? - CORRECT ANSWER - 6
Why does a boilermaker use a test tree that has a bleed valve when hydrotesting as exchanger -
CORRECT ANSWER - To drain condensation
What determines the type of bolts to be put back in an exchanger so that it can be bolted back
together? - CORRECT ANSWER - The service of the exchanger
What type of exchanger needs only one end for plugging tubes? - CORRECT ANSWER -
Hairpin
The tube to tube sheet joint achieved by mechanical or explosive expansion of the tube hole in
the tube sheet is the? - CORRECT ANSWER - Expansion joint "J" Factor
What type of tank has legs on the roof? - CORRECT ANSWER - Floating roof
,What information is required to locate a nozzle that will be installed on a vessel shell? -
CORRECT ANSWER - The elevation and degree of the center-line of the nozzle
The variable spring on s spring type hangar should be adjusted to what position before the
pipeline is put into service? - CORRECT ANSWER - Cold
All of the following are possible reasons can overloading except? - CORRECT ANSWER -
incorrect orientation of the support
What problems are associated with tube rolling - CORRECT ANSWER - Improper expanding
and depth
Why is a Monel Gasket used in HF acid piping? - CORRECT ANSWER - Because of its high
resistance to acid.
Which of the following are required when test blinds are installed? - CORRECT ANSWER -
longer bolts
Which of the following are used to prevent tubes from sagging because of weight? - CORRECT
ANSWER - Baffles
What is the are of a concrete slab that is 25-feet 6-inches long and 10-feet wide? - CORRECT
ANSWER - 255 Sqft
Which gas passes through the center of a cutting torch tip? - CORRECT ANSWER - Oxygen
Add the following fraction and reduce to the lowest common denominator. 24 5/8+13 15/16+8
1/4 - CORRECT ANSWER - 46 13/16
On a blueprint, 1/4"=1' means? - CORRECT ANSWER - 1 inch on the drawing equals 1 foot of
actual size
, A major component of a tower is a? - CORRECT ANSWER - Downcomer
What is indicated by the notation "3-inch, 150#" on an isometric drawing. - CORRECT
ANSWER - 3-inch diameter, 150# Flange
What is the preferred type of rigging material used to lift a coated pipe? - CORRECT ANSWER
- Nylon slings/straps
The best source for information about welding on a tube is the - CORRECT ANSWER - QA/QC
Equal width grating panels are being unloaded on the job site. One piece measures 4 1/2 FT in
width. There are 7 panels, what is the total width when all the panels are laid side-by-side? -
CORRECT ANSWER - 31 1/2 FT
What is the demister pad used for? - CORRECT ANSWER - Filtering chemicals and vapors
Who is responsible for blocking valves that isolate a reboiler before work is begun? - CORRECT
ANSWER - Operations
The channel head cover on an exchanger is used on the - CORRECT ANSWER - Tube side
What type of steel beams are attached to the furnace wall with clips to contain a boilers
horizontal expansion? - CORRECT ANSWER - Buckstays
Who determines the size and type of spring can be used? - CORRECT ANSWER - Engineer
How many bolts must be removed so that a 3-inch 150# flange can be hot bolted? - CORRECT
ANSWER - 0
How often must entry permits be updated during normal working hours. - CORRECT ANSWER
- At the end of each shift change
