B2 Flashcards
What is the primary objective of piping system design?
A) Reducing costs
B) Ensuring pressure integrity over its design life
C) Maximizing pipe length
D) Increasing fluid velocity
Ensuring pressure integrity over its design life
Which of the following is NOT a major discipline involved in piping system design?
A) Fluid mechanics
B) Thermodynamics
C) Strength of materials
D) Biology
Biology
What does the term ‘design bases’ include?
A) Only physical attributes of piping systems
B) Environmental factors and loading conditions
C) The cost of installation
D) Marketing strategies
Environmental factors and loading conditions
Why are dimensional standards important in piping design?
A) They ensure all pipes look identical
B) They help in manufacturing pipes with accurate sizes and configurations
C) They increase fluid flow
D) They reduce the weight of pipes
They help in manufacturing pipes with accurate sizes and configurations
Which of the following is a key environmental factor affecting piping systems?
A) Noise pollution
B) Erosion-corrosion
C) Soil composition
D) Fluid density
Erosion-corrosion
What are loading conditions in piping system design?
A) Changes in pipe color
B) Forces and stresses acting on the piping system
C) Temperature of the external environment
D) The cost of materials
Forces and stresses acting on the piping system
Which type of load occurs continuously during system operation?
A) Occasional loads
B) Deadweight loads
C) Seismic loads
D) Wind loads
Deadweight loads
What is the main concern in pressure integrity?
A) Aesthetic appearance
B) Leak-tight condition
C) Pipe color
D) Pipe material cost
Leak-tight condition
Which of the following is a materials-related consideration in piping design?
A) Wind speed
B) Metallurgical properties
C) Paint type
D) Pipe length
Metallurgical properties
Which joint type is most commonly used in large industrial piping systems?
A) Threaded joints
B) Butt-welded joints
C) Compression joints
D) Grooved joints
Butt-welded joints
What is the primary function of flanged joints?
A) Increase pressure
B) Easy assembly and disassembly
C) Reduce temperature
D) Prevent leaks completely
Easy assembly and disassembly
Which type of piping system is most susceptible to erosion-corrosion?
A) Plastic piping
B) Wet-steam systems
C) Copper piping
D) Gas pipelines
Wet-steam systems
What is the purpose of pipe wall thickness determination?
A) To increase aesthetic appeal
B) To ensure pressure integrity
C) To decrease pipe weight
D) To reduce construction costs
To ensure pressure integrity
What is a primary cause of water hammer in piping systems?
A) Corrosion
B) Abrupt fluid flow changes
C) Pipe length
D) High temperatures
Abrupt fluid flow changes
What is the major factor in determining the selection of piping materials?
A) Cost only
B) Chemical compatibility with the fluid
C) The color of the pipe
D) The diameter of the pipe
Chemical compatibility with the fluid
Which factor affects the structural integrity of a piping system the most?
A) Material selection
B) Color of the pipes
C) Number of bends
D) Location of valves
Material selection
What is the effect of thermal expansion on piping systems?
A) Reduces pipe length
B) Can cause pipe stress and movement
C) Eliminates corrosion
D) Makes pipes stronger
Can cause pipe stress and movement
What does the ASME pressure classification system define?
A) Minimum required pipe thickness
B) Predetermined pressure-temperature ratings
C) The weight of piping materials
D) Corrosion rates of different metals
Predetermined pressure-temperature ratings
Which component is NOT typically considered in piping system deadweight?
A) Pipe itself
B) Fluid inside the pipe
C) External wind pressure
D) Thermal insulation
External wind pressure
What is the main disadvantage of flanged joints?
A) Difficult to assemble
B) Prone to leakage due to temperature fluctuations
C) Weak structural strength
D) Limited size availability
Prone to leakage due to temperature fluctuations
Which load type acts temporarily and is not sustained throughout system operation?
A) Deadweight load
B) Occasional load
C) Pressure load
D) Static load
Occasional load
What is the primary cause of erosion in piping systems?
A) High pressure
B) Abrasion due to particles in the fluid
C) Low temperature
D) Pipe thickness
Abrasion due to particles in the fluid
How does thermal expansion affect a piping system?
A) Reduces the need for supports
B) Causes stress and movement in the system
C) Eliminates material fatigue
D) Decreases fluid temperature
Causes stress and movement in the system
Which of the following is NOT a method for controlling erosion-corrosion?
A) Using corrosion-resistant materials
B) Reducing flow velocity
C) Increasing sharp bends in piping
D) Applying protective coatings
Increasing sharp bends in piping
What is the primary concern of seismic loads in piping systems?
A) Preventing thermal expansion
B) Ensuring structural integrity during earthquakes
C) Increasing pipe wall thickness
D) Reducing insulation weight
Ensuring structural integrity during earthquakes
Which type of joint is commonly used in refrigeration piping?
A) Threaded joints
B) Brazed joints
C) Compression joints
D) Flanged joints
Brazed joints
Why is corrosion a significant factor in piping design?
A) It weakens the material over time
B) It makes pipes stronger
C) It only affects external surfaces
D) It improves pressure resistance
It weakens the material over time
What is the primary reason for using thicker pipe walls in high-pressure systems?
A) Aesthetic appeal
B) Increased pressure integrity
C) Reducing cost
D) Decreasing insulation requirements
Increased pressure integrity
What is the main disadvantage of threaded joints?
A) High cost
B) Susceptibility to vibration-induced fatigue failures
C) Difficult installation
D) Low availability
Susceptibility to vibration-induced fatigue failures
What is the function of a compression joint?
A) Provide a leak-tight seal without welding
B) Reduce pressure
C) Increase pipe flexibility
D) Improve structural strength
Provide a leak-tight seal without welding
What is the purpose of grooved joints?
A) Preventing vibration
B) Allowing easy disassembly for maintenance
C) Reducing pipe diameter
D) Increasing fluid velocity
Allowing easy disassembly for maintenance
What is the effect of wind loads on outdoor piping?
A) Increases internal pressure
B) Requires additional structural support
C) Eliminates corrosion risks
D) Reduces pipe weight
Requires additional structural support
What is the primary cause of ice loads on pipes?
A) Condensation
B) Freezing rain and extreme cold
C) High pressure
D) Poor insulation
Freezing rain and extreme cold
What is a common method to reduce seismic risks in piping systems?
A) Increasing pipe diameter
B) Using flexible supports
C) Painting the pipes
D) Reducing pipe length
Using flexible supports
What is a characteristic of flow-induced vibration in piping systems?
A) Only occurs at low temperatures
B) Can cause fatigue failures if not controlled
C) Reduces fluid velocity
D) Strengthens the piping structure
Can cause fatigue failures if not controlled
What is the major risk associated with pressure transients?
A) Pipe discoloration
B) Water hammer damage
C) Increased insulation costs
D) Decreased pipe thickness
Water hammer damage
Which factor determines the required pipe wall thickness?
A) Fluid color
B) Internal pressure and material strength
C) Pipe length
D) Insulation type
Internal pressure and material strength
Why are high-alloy materials used in corrosive environments?
A) They are cheaper
B) They have better corrosion resistance
C) They are easier to weld
D) They are lighter in weight
They have better corrosion resistance
Which factor is NOT typically considered when selecting a piping material?
A) Corrosion resistance
B) Pressure-temperature ratings
C) Pipe color
D) Erosion resistance
Pipe color
What happens if piping insulation is not considered in the design?
A) The pipe will always overheat
B) Heat loss or gain may affect system efficiency
C) The pipe will become structurally weak
D) Fluid velocity will decrease
Heat loss or gain may affect system efficiency
What is the main concern in piping systems subject to high-temperature variations?
A) Risk of thermal expansion stress
B) Increased corrosion rate
C) Decreased pressure
D) Reduced material strength
Risk of thermal expansion stress
Which of the following factors affects pipe stress the most?
A) The pipe color
B) Internal pressure and thermal expansion
C) Insulation material
D) The type of pipe fittings used
Internal pressure and thermal expansion
Which type of piping joint is most commonly used in high-pressure applications?
A) Brazed joint
B) Butt-welded joint
C) Threaded joint
D) Compression joint
Butt-welded joint
What is the purpose of using expansion loops in piping design?
A) To reduce corrosion
B) To accommodate thermal expansion and contraction
C) To decrease fluid velocity
D) To lower installation costs
To accommodate thermal expansion and contraction
What is a common method used to reduce vibration in piping systems?
A) Increasing pipe length
B) Using flexible supports and dampers
C) Removing pipe insulation
D) Adding more pipe joints
Using flexible supports and dampers
What is the main function of a thrust block in buried piping systems?
A) Prevent thermal expansion
B) Absorb and counteract pressure forces
C) Reduce corrosion
D) Support pipe weight
Absorb and counteract pressure forces
What is a major concern when designing piping systems for cryogenic applications?
A) Pipe expansion
B) Material brittleness at low temperatures
C) High-pressure loss
D) Slow fluid flow
Material brittleness at low temperatures
What is a major disadvantage of brazed joints in piping systems?
A) Prone to leakage
B) Limited high-temperature applications
C) Weak structural integrity
D) High material costs
Limited high-temperature applications
What is the primary function of a piping support system?
A) Increase pipe pressure
B) Control movement and reduce stress on the piping system
C) Enhance pipe color
D) Decrease pipe length
Control movement and reduce stress on the piping system
Why are threaded joints generally not used in high-pressure applications?
A) They are expensive
B) They have a high risk of leakage and fatigue failure
C) They require specialized welding
D) They are difficult to manufacture
They have a high risk of leakage and fatigue failure
What is the main disadvantage of compression joints?
A) Require welding
B) Limited to low-temperature applications
C) Difficult to install
D) High material cost
Limited to low-temperature applications
What is the primary purpose of a pipe flange?
A) To allow for easy assembly and disassembly
B) To increase fluid pressure
C) To reduce pipe weight
D) To eliminate corrosion
To allow for easy assembly and disassembly
What type of piping joint is commonly used for instrument and control tubing?
A) Threaded joints
B) Compression fittings
C) Brazed joints
D) Butt-welded joints
Compression fittings
Which of the following factors has the greatest impact on seismic loads?
A) Pipe diameter
B) Pipe material
C) Ground acceleration and building movement
D) Fluid density
Ground acceleration and building movement
What causes water hammer in piping systems?
A) Fluid freezing
B) Sudden changes in fluid velocity
C) Pipe expansion
D) High external temperature
Sudden changes in fluid velocity
What is the primary consideration for pipe wall thickness determination?
A) Fluid density
B) Internal pressure and material strength
C) Pipe color
D) Insulation material
Internal pressure and material strength
Which load type is generally time-invariant?
A) Deadweight load
B) Wind load
C) Seismic load
D) Water hammer
Deadweight load
What is the primary factor in selecting a piping material?
A) Cost
B) Compatibility with fluid and operating conditions
C) Pipe color
D) Manufacturer’s preference
Compatibility with fluid and operating conditions
What is the purpose of wind bracing in outdoor piping?
A) To reduce corrosion
B) To support the system against wind loads
C) To increase pipe flexibility
D) To prevent thermal expansion
To support the system against wind loads
What is an effective method to prevent erosion-corrosion?
A) Increasing flow velocity
B) Using erosion-resistant materials
C) Reducing pipe diameter
D) Eliminating pipe supports
Using erosion-resistant materials
What type of piping system is most susceptible to seismic loads?
A) Underground piping
B) Above-ground, large-diameter piping
C) Small-diameter copper tubing
D) Plastic drain pipes
Above-ground, large-diameter piping
Which of the following is a sustained load in piping systems?
A) Deadweight
B) Seismic load
C) Wind load
D) Water hammer
Deadweight
What is the main disadvantage of threaded joints?
A) Difficult to install
B) Low pressure rating and susceptibility to vibration failure
C) High material cost
D) Only available in large sizes
Low pressure rating and susceptibility to vibration failure
What happens if a piping system is not designed for seismic loads in an earthquake-prone area?
A) Nothing significant
B) Structural damage or failure may occur
C) Increased fluid flow
D) Pipe weight is reduced
Structural damage or failure may occur
Which of the following is NOT a common method to reduce vibration in piping systems?
A) Adding pipe supports
B) Using flexible connections
C) Increasing flow velocity
D) Modifying pipe layout
Increasing flow velocity
What is the function of a pipe support?
A) To increase pressure
B) To carry the weight and restrain movement of the pipe
C) To change fluid direction
D) To decrease pipe length
To carry the weight and restrain movement of the pipe
What is a major consequence of inadequate pipe wall thickness?
A) Increased cost
B) Risk of pressure failure and leaks
C) Reduced corrosion
D) Better insulation
Risk of pressure failure and leaks
What is the most important consideration in maintaining pressure integrity?
A) Pipe wall thickness and material selection
B) Color coding of pipes
C) Insulation thickness
D) Pipe diameter
Pipe wall thickness and material selection
