Massachusetts Journeyman Pipefitter Practice Exam

These questions are part of the practice quiz. Start practicing

• What is the maximum PSI for malleable iron?
• The maximum size of a surface blow-off connection shall not exceed how many inches?
• What does 'drainage' entail in a piping system?
• What material must the boiler blow-off fittings be when the pressure exceeds 100 psi?
• What are the minimum requirements for drainage pipe burial depth?
• Which of these practices is essential for preventing tool damage?
• What is a freezing risk for exterior plumbing components?
• According to ASME code, what is the minimum size of pipes connecting the water column to a boiler?
• What is the function of air admittance valves (AAVs)?
• For high pressure boilers with more than 100 square feet of heating surface, the feed connection shall not be smaller than which pipe size?
• What is the maximum size limitation for ANSI class 600 socket welded flanges in boiler external piping?
• What does 'leak detection' involve within residential plumbing?
• What is the minimum pressure rating required for valves and fittings on steam lines for high-pressure boilers?
• What is the purpose of a cleanout in a piping system?
• How high must low water fuel cut-off devices be piped in relation to the gauge glass?
• Which valve is not appropriate as a boiler steam outlet valve on a high pressure boiler?
• What connection size is needed for a water column?
• Where is the required boiler feed water stop valve located on a high-pressure boiler?
• What is the minimum connection size for safety-related plumbing equipment?
• What is the minimum thickness for boiler blow-off fittings when the boiler pressure exceeds 100 psig?
• Why is proper pipe sizing significant in plumbing systems?
• What is the maximum allowable distance from a fixture to a trap according to plumbing code?
• When a high pressure boiler plant only has one boiler which statement would be true?
• What is the minimum pipe size in inches required for the water column drain cock or drain valve?
• How does a union differ from a coupling in pipefitting?
• At what temperature do safety plugs on an acetylene bottle melt?
• When more than 2 high pressure safety valves of different sizes are mounted on a boiler, the relieving capacity of the smaller valve should not be less than what percentage of that of the larger valve?
• Under what condition shall mufflers not be used on safety relief valves according to ASME Code?
• What is the most appropriate valve application for a surface blow-off system?
• What item is not commonly used when piping up a reducing station?
• Which of the following valves would be least effective in a blow-off application?
• The steam and water connections to a water column or water gauge glass on a high pressure boiler must be accessible for what purpose?
• How are PVC pipes typically joined?
• What is the primary function of a check valve in plumbing?
• Which component is key in preventing backflow in plumbing systems?
• What is the maximum connection for a surface blow-down?
• An altitude gauge is required on a hot water supply boiler at altitudes over how many feet?
• What is a 'dead leg' in a piping layout?
• At what pressure is an ASME Section VIII expansion tank required on a hot water boiler?
• Under what conditions can the size of bottom blow-down lines be reduced?
• What is the function of a thermostatic mixing valve?
• The main purpose of a safety valve is to what?
• For steam service, what type of joint is preferable on a high pressure boiler?
• What is the minimum connection size for a control manifold?
• The connection between a boiler and the safety valve must be at least what size?
• What is the primary purpose of a pipefitting system in construction?
• A slow-opening valve requires how many complete turns to be fully opened or closed?
• Over what pressure is it required to have two sight glasses?
• What is the minimum pipe size that requires hangers to be adjusted over?
• Explain the role of hydronic heating in building comfort systems.
• According to ASME B31.1, what material should boiler blow-off fittings be made from when boiler pressure exceeds 100 psig?
• What is the maximum suggested pipe support spacing for 6" pipe used for steam, gas, or air service?
• What is the role of a trap in a plumbing system?
• Which type of pipe is commonly used for gas lines?
• When caring for plumbing tools, what is NOT recommended?
• What is the minimum connection required for a low water cut-off draw?
• Why is it important to use proper sealing compounds on threaded joints?
• In plumbing terminology, what does 'vent stack' refer to?
• What is the appropriate valve application for a boiler blow-off valve on a high-pressure boiler?
• How many stop valves are required between boilers having a manhole opening when connected to a common steam header?
• Why is cross-connection control important in plumbing?
• What is the purpose of a vacuum breaker?
• At what temperature do brazing joints typically melt?
• What is a common feature of modern plumbing systems to manage water flow?
• For a control manifold, what is the required minimum connection size?
• What is the maximum connection size for a threaded safety valve?
• What is stated regarding mufflers on safety valves in ASME Code?
• Which material is crucial to consider when installing underground piping?
• How can water hammer be prevented?
• The pipefitter license is governed by Chapter 146 of M.G.L. The section of this law is section _________ of the M.G.L.
• What should be prioritized to ensure effective piping installation?
• Which is a common application for CPVC pipes?
• Which code governs the installation of plumbing systems in Massachusetts?
• What process should be conducted when pressure testing a piping system?
• When is it necessary to have two or more heating safety mechanisms?
• What is a method to prevent sharp bends in piping?
• What is the maximum water temperature for heating boilers according to ASME V?
• When installing a low water cut-off on a hot water heating boiler, you may install it ____________________ .
• Which device triggers a safety shut-down requiring a manual reset?
• What is the minimum connection size for a sight glass?
• Which is mandatory to have installed on a separate connection on a hot water heating boiler?
• Why is it necessary to maintain the slope in drainage pipes?
• For a single boiler installation, where is an ASME code stamp required?
• What safety protocol should be followed when soldering copper pipes?
• Each high-temperature water boiler must have a bottom drain connection of at least how many inches in diameter?
• What is a sign of effective drainage capacity?
• What is the maximum water temperature recommended for use in heating boilers under ASME V?
• What is a common maximum connection size for threaded safety valves?
• What does 'drainage fixture unit' (DFU) refer to?
• What is the primary material composition of CPVC pipes?
• What part of a high pressure boiler connects the boiler to the discharge system?
• In the heating boiler code, where should an additional stop valve be placed when one is used in the supply pipe connection?
• The purpose of a Flash Tank is to _____________________ .
• What size piping connection requires consideration for adjustable hangers?
• The automatic non-return valve on a high pressure boiler is located ________________ .
• Which type of safety relief valve body is prohibited for high-temperature water boilers?
• What type of hazard does improper pipe installation or design create?
• What is the recommended maximum length for vent piping?
• What is the typical life expectancy of copper piping?
• What is the minimum BTU input that requires a Massachusetts pipefitting license for heating systems?
• What is the maximum allowable size for slip-on flanges used in boiler external piping according to ASME B.31.1?
• How should you support horizontal runs of piping?
• What is the largest safety valve that may be attached to a steam drum of a high pressure boiler by threading?
• What is required on a hot water boiler when the boiler pressure exceeds 30 psig?
• What is a true statement regarding a boiler water column?
• The minimum pressure rating for all valves on a heating boiler should equal which of the following?
• What is the allowable maximum PSI for a piping system made of ASTM C-857?
• What is typically the first step before working on a plumbing system?
• According to the ASME high pressure boiler code, a boiler that has more than how many square feet of heating surface must have 2 or more safety valves?
• In piping terminology, what is a 'reducer'?
• What connection is associated with an ASME code stamp for high-pressure main steam lines?
• What is the minimum connection size for a control line take-off?
• A 3/4" blow-off can be used on high-pressure boilers with less than how many square feet of heating surface?
• What does the blow-off valve's discharge outlet need to ensure?
• What characterizes a hydronic heating system?
• What are the advantages of using PEX tubing?
• What does 'backflow' refer to in plumbing systems?
• What is the typical application of PEX tubing in plumbing?
• What is the function of a valve in a piping system?
• What is the primary purpose of using rigid support for pipes over long vertical runs?
• What type of fitting must be installed in the water piping connection at every right angle to assist in cleaning?
• What is the standard maximum size for a take-off in a control line?
• What is the minimum vent size for residential plumbing systems in Massachusetts?
• The discharge pipe of a high pressure safety valve should be configured in what manner?
• What does the term 'drainage capacity' refer to?
• Which type of valve is used to control flow in a piping system?
• What is the function of a pressure gauge in a piping system?
• What is the maximum connection size for a bottom blow-off?
• What type of maintenance can lead to tool deterioration?
• An altitude gauge is necessary for systems located at higher altitudes due to what reason?
• What does the term 'slope' refer to in drainage systems?
• What is a result of poor drainage capacity in a system?
• What is a spirit level primarily used for?
• What is the minimum connection for a sight glass drain?
• Why is it important to pressure test a completed piping installation?
• The Bourdon Tube of a steam pressure gauge _______________ .
• What is the maximum size for a socket welded fitting?
• What tool is commonly used to cut copper pipe?
• What diameter of pipe is required for the bottom drain connection of high-temperature water boilers?
• What is the main purpose of a plumbing trap?
• The pipe sizes required for the boiler equalizer line are based on what capacity?
• What is the maximum connection for a flanged safety valve?
• Safety valve or safety relief valve discharges shall be located or piped in what manner?
• What is the role of a thermostat in hydronic heating systems?
• What is the purpose of a pressure relief valve?
• How far should vent pipes be located from windows in a residential setting?
• What is the minimum size of the drain pipe required on a low water cut-off with a separate float chamber?
• What is the primary function of a safety valve on a high pressure boiler?
• What is the minimum connection size for a bottom blow-off?
• What is water hammer?
• What cast iron item is not allowed on a high pressure boiler?
• What is the minimum pipe size for all gauge glass connections?
• Which form of safety valve mounting is prohibited in the heating boiler code?
• A syphon is commonly used to protect which device?
• How should joint compounds be applied to threaded pipelines?
• Boiler blow-down tanks are classified as what type of piping?
• At what minimum size must a syphon be made of non-ferrous material?
• How is the slope for drainage pipes typically calculated?
• What is the primary function of hangers in piping systems?
• What is the purpose of a blow-off valve in a boiler system?
• What is the most common reason for clogs in drain systems?
• Where does the bottom blow down line of a high pressure water tube boiler connect?
• Hangers used for the support of piping, NPS how many inches and larger, shall be designed to permit adjustment after erection?
• What is the primary function of a 'trap' in a plumbing system?
• The ability of a drainage system to avoid clogging is known as?
• At all high points of a chilled water system, what should be installed?
• The discharge outlet of a safety valve must not be what?
• The Bourdon Tube in a steam pressure gauge is protected by a ________________ .
• What does 'vertical rise' mean in piping systems?
• When must two or more safety valves be used on a steam heating boiler?
• What is the purpose of a check valve?
• What is a common application for a 90-degree elbow fitting?
• What is the purpose of a trap in plumbing systems?
• Which type of connector is commonly used for joining copper pipes?
• Which valve offers the least resistance to flow?
• What should be avoided when installing underground piping?
• What is the minimum size connection for a sight glass drain?
• What is a double sanitary tee used for?
• What is commonly used to seal connections in PVC piping systems?
• What considerations must be made when installing a sump pump?
• Cast iron pipe can be used to carry steam at pressures up to what pressure (psig)?
• What is the purpose of using hangers in piping systems?
• What material is commonly used for piping insulation?
• What is the minimum connection required for something like a water column in plumbing?
• What is a common material used for vent pipes?
• What is a key benefit of using solvent cement for joining pipes?
• What is an abrasive saw commonly referred to as?
• What does the acronym 'NFPA' stand for?
• For safety, how many means of water feed are required when exceeding 500 square feet of heating surface?
• What is the required cross-sectional area for a discharge pipe used on a safety valve?
• What is an important maintenance practice for plumbing tools?
• How can one extend the lifespan of plumbing tools?
• What is a key precaution when installing underground piping?
• In plumbing, what does 'slope' indicate regarding drain lines?
• Which type of material is specified for the minimum size syphon?
• What is the primary purpose of an auxiliary low-water cut-off device?
• What should be routinely checked to ensure the functionality of high pressure boiler systems?
• The minimum temperature rating of all valves or cocks on a heating boiler should be at least what degree Fahrenheit?
• What is an acceptable use of dielectrics in plumbing?
• When two or more high-pressure boilers are connected to a common steam header, what is required for each boiler?
• What does ensuring proper depth in underground piping help avoid?
• What is the maximum temperature limitation for non-ferrous pipe attached directly to a boiler?
• Which of the following materials is commonly used in plumbing systems?