NCCER Level 4 Practice Exam

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• Which of the following statements best describes the categories the installer tests?
• Which of the following is a correct statement regarding crew evaluations?
• Ensuring that the project is kept on schedule and within budget is a responsibility of the __.
• Which organization is not a founding member of the International Code Council?
• Which cost category is exemplified by salaries and benefits on a project budget?
• Copper tubing used for medical gas and vacuum systems is purged with oil-free, dry nitrogen and sealed to prevent the formation of which oxide?
• The drainage line for a mobile home must have a diameter of at least ______.
• An indicator that all the air has been bled from a hydronic system is that the system operates quietly.
• OSHA Form 300A is used for what purpose?
• To prevent accidental use of the wrong gas, how are inlets and outlets for each gas type designed?
• What is a drawback of the Hydropneumatic System?
• Which statement best describes the minimum water supply pressure to a mobile home according to most codes?
• Which statement is not supported by the described tests?
• When delegating, the crew leader should make sure the crew member understands what to do and ___.
• The allowable daily rate of effluence discharge into a leach field is measured in
• Which fixture produces indirect waste only on occasion?
• Filler materials used in brazing copper tube melt at temperatures between 1,100°F and what temperature?
• Hydronic systems with separate supply and return lines are known as which configuration?
• OSHA recordkeeping requirements specify maintaining a log of recordable injuries and illnesses for how long?
• In heat transfer terminology, specific heat is commonly measured in which unit?
• Which statement about the nitrous oxide central supply temperature is correct?
• To remove any remaining flux from a completed brazed joint, use what?
• When installing more than one riser to the hot water supply main, the most typically used connection type is the
• In a steam heating system, where must the steam supply line be located relative to the return line?
• The amount a contractor pays to an insurance company for coverage is called the __.
• Which organization is not a founding member of the ICC?
• Which term describes a heating system that uses liquid water or steam to convey heat through pipes?
• The minimum capacity for a septic tank is
• Professional code development organizations typically publish new code additions every three years.
• The Uniform Plumbing Code has been published since 1945 by which organization?
• An example of a non-monetary award recognizing hard work is ___.
• Which design feature helps ensure the correct gas type is connected to its inlet or outlet?
• Model Codes influence local codes by providing the basis for which of the following?
• When planning labor, which action is the best way to ensure appropriate skill coverage?
• What bed material is specified for laying distribution pipes?
• Which statement correctly describes the forced circulation system?
• After a well is drilled and cleaned, what is the next step?
• What is the maximum allowed central supply temperature for nitrous oxide?
• Piping used for medical surgical vacuum systems can be made from which materials?
• The most common method of circulating water back to the heater is the
• Which financial measure represents the residual interest in a company's assets after liabilities are subtracted?
• In the presence of oxygen, oil or grease on tools, this condition is a potential hazard?
• Subtract a company's debt from its assets to determine its __.
• The function of baffles in an interceptor is to
• For a shallow-well jet pump, what is the first step?
• The initial cross-connection test uses which system pressure?
• In an oil interceptor, which component is used to collect grease that floats on the surface?
• Which approach is recommended for overcoming a language barrier?
• Before adding chlorine to the compound, what should you dilute it with?
• Which test is associated with dislodging foreign matter in the system?
• In an oil interceptor using a gravity draw-off system, the draw-off sleeve terminal should be set above the normal water line by how much?
• What is the term for the device that mixes cold water with hot water to regulate outlet temperature?
• Which department would likely arrange equipment rentals in a large company?
• The distance interval for installing a relief vent along the main drainage line is ______.
• Who performs the verifier's piping purge test?
• Which is the oldest and simplest type of water pressure booster system?
• During brazing operations, what is the required role for the second person?
• Plumbing systems in mobile homes are typically installed by ______.
• Before modifying an existing medical gas or vacuum system, the contractor must obtain which document?
• What is the purpose of zone control valves in a heating system?
• To provide heated water on demand, hotels and similar buildings use a
• Which group is responsible for keeping the project on schedule and within budget?
• An example of a continuous-demand item is a hose bibb.
• To allow solids to settle out, wastewater should remain in a septic tank for at least
• Which soil condition is NOT recommended for laying water supply lines?
• The seven-minute peak demand period is used to estimate which type of water needs?
• The installer is responsible for testing medical gas and vacuum systems classified as which categories?
• Which organization publishes NFPA 99?
• In the hydrologic cycle, water evaporates, condenses into clouds, returns to earth and percolates into which medium?
• Which of the following is proper when describing the main categories of private waste disposal systems?
• The type of schedule that shows dependent and critical path activities is the network schedule.
• Which device is used to measure the volumetric flow rate of medical gases through a piping system?
• Which term describes the obligation to manage hazardous waste from creation to disposal?
• Each of the following pipe materials is approved for use in hot tubs and spas except ______.
• To make a socket joint, the ends of two pieces of tubing are joined using which component?
• Oil and gasoline can damage sewer, septic, or storm water drainage systems because they are what?
• What is the minimum distance required between an air gap and the building waste system in an indirect waste disposal pipe?
• The process by which heat is transferred from one body to another through space is called?
• What is the minimum setback distance for leach-field drain pipes from property lines?
• Sanitary dump stations in parks are used for wastewater disposal from vehicles. Which option best describes this use?
• The abbreviation BOD stands for which of the following?
• Since 1945, the IAPMO has published the Uniform Plumbing Code.
• An oxygen-rich environment is defined as having an oxygen by volume higher than what percentage?
• In a typical air gap, the gap must be how many times the diameter of the indirect waste pipe?
• Wastes hotter than which temperature should be discharged into a cooling basin or sump?
• Production figures used in preparing an estimate consist of calculations of the __.
• The liquid waste produced by soil absorption systems is called
• If failure of a medical gas system could cause serious injury or death, NFPA 99 classifies it as which category?
• NOT one of the three main purposes of a water storage tank?
• In a one-pipe steam system, the supply pipe must have a minimum diameter of how many inches?
• What is the relationship between the air gap requirement and the indirect waste pipe diameter in a typical air gap?
• Permanent and semipermanent pools must have access to water supply and what feature?
• Before assembling the components, if a hot tub or spa you should ______.
• If a job is delayed due to late delivery of materials, the crew leader should ___.
• In addition to the installer, which role is responsible for testing medical gas and vacuum systems?
• Which statement best describes the role of a water storage tank in a pumping system?
• In colder climates, the depth of soil over top of the septic tank should be at least
• The requirement that label spacing on copper tubing not exceed 20 feet applies to which systems?
• A storage tank in a water pressure booster system may have a capacity as small as
• Which approach is preferred when documenting a safety problem for the record to maintain neutrality?
• At intervals of 200 feet along the main drainage line of a mobile home park, you should install a(n) ______.
• Medical gas systems require brazed joints to meet specified testing procedures. True or false?
• Spas construction commonly uses which of the following materials?
• An example of a medical gas is which of the following?
• Who conducts the verifier's piping purge test?
• The volume of a residential rectangular swimming pool with a length of 25 feet, a width of 15 feet, and a height of 8 feet is
• Spas are usually made of concrete, steel, or ______.
• A sacrificial anode used to control corrosion is typically made from magnesium.
• Code changer proposals are submitted on what?
• Sludge should be pumped out of a septic tank when the tank is
• During brazing operations, a second person should serve as which of the following?
• Submersible pumps are installed at the bottom of the well below the water level.
• Parks that serve independent vehicles must provide what type of infrastructure for a proper disposal of wastewater?
• Which material is not an acceptable piping material for medical vacuum systems?
• Which statement best describes profit in a firm-fixed-price contract?
• The type of schedule that shows dependent and critical path activities is the ___.
• Under federal law, the principle that a contractor is responsible for hazardous waste from the time it is created until it is disposed of is termed __.
• Differing densities of water in the solar collector and the storage tank are the basis of operation for which system?
• When promoted to crew leader, the amount of time spent on craft work typically what happens?
• Portions of a medical gas and vacuum system that supply power for lighting and other essential patient-safety equipment are described as what?
• Local plumbing code updates that allow new technologies reflect which trend?
• Which term describes a heating system that uses heated water or steam to transfer heat to spaces?
• A pool's drainage system uses a backwater valve to prevent
• In a gravity return system, circulation depends upon the
• Distribution pipes in a leach field should have a grade of 2-4 inches per
• A high pumping rate will result in what?
• What is the crew leader's primary job on a construction crew?
• In a mechanical grease interceptor, floating liquified grease is collected by a which component?
• Which testing is specified for brazed joints to qualify them for use in medical gas systems?
• Besides the installer, who is required to test medical gas and vacuum systems?
• Which form is used to report work-related injuries and illnesses?
• What is ASTM International primarily known for?
• In a hot tub, the water circulates slowly through a(n) ______.
• A waste pipe that is 3 Inches in diameter requires an air gap of how many inches?
• To begin the process of certification as a medical gas systems installer, a candidate must demonstrate plumbing experience of at least how many years?
• Which pressure is used for the initial cross-connection test?
• Which statement aligns with hazard identification best practice?
• Model code revision is traditionally conducted through what type of process?
• Which OSHA form serves as the annual summary of injuries and illnesses?
• The three main categories of private waste disposal systems are
• The committee that reviews changes to the International Plumbing Code meets how often?
• Which statement best describes a gravity return system's driving force?
• A vehicle that has bathroom facilities and can be connected to public utilities for an extended period of time is considered a(n) ______.
• As waste decomposes in an organic system, it emits
• On a construction site, to whom does the crew leader typically report directly?
• Regarding safety training sessions, which statement is correct?
• Which document must be obtained before modifying an existing medical gas or vacuum system?
• Which organization publishes the Uniform Plumbing Code?
• Many local codes have been developed from documents known as Model Codes.
• Which standard governs the classification and requirements for medical gas systems in healthcare facilities?
• Implementing a no-tolerance harassment policy is likely to result in which outcome?
• The last step in the installation process for solar and hydronic systems is to?
• What type of heating system uses water or steam to heat an entire building or room?
• The abbreviation CPM stands for __.
• During a verifier's piping purge test, intermittent spurts are created to
• Life safety system requirements relating to medical gas and vacuum systems are determined by which of the following?
• Which system is used to provide heated water on demand in hotels?
• The well's shape is provided by a well casing, which prevents water what?
• The main way for crew leaders to encourage crew safety is to ___.
• Leach-field drain pipes should be no closer to property lines than
• A multipurpose extinguisher suitable for liquids, gases, and ordinary combustibles is labeled which of the following?
• Which organization provides more than 12,000 voluntary standards across technical fields?
• Before pumping out a tank, allow it to ventilate for
• In the 2012 IPC, requirements for hazardous wastes are covered in the chapter titled
• Covered pits filled with sand and gravel to accept wastewater from roofs and basements are considered
• Lay distribution pipes in trenches on a bed of gravel or crushed stone with a depth of no less than
• When brazing a joint for a medical gas or vacuum system, oil-free, dry nitrogen gas is used as a what?
• Excessive pump cycling in a water pressure booster system is commonly caused by
• Devices that adjust water temperature by adding cold water to the hot water flow are called
• Which component is used to prevent backflow in a pool drainage system?
• What is the purpose of balancing a solar or hydronic system after installation?
• The best eye protection from all directions is provided by which equipment?
• A boiler operating at 210 F or higher must have a minimum capacity of how many gallons?
• During a verifier's piping purge test, intermittent spurts of gas are created to
• Which statement reflects the retention time requirement to allow solids to settle in a septic system?
• Minimum water supply pressure to a mobile home, according to most codes, is ______.
• What is the recommended method to remove flux from a completed brazed joint?
• Which department would be likely to arrange equipment rentals in a large company?
• Which material is used on distribution pipes to prevent silt entry?
• An equation that represents a balanced account for a business is __.
• What does the abbreviation pH stand for?
• Nitrous oxide is commonly used as a medical gas. Which gas is this?
• The process for revising model codes is described as a which process?
• Water supply lines should be laid
• Sanitary dump stations are used to dispose of wastewater from which source?
• The most common form of circulating pump used in hydronic and solar heating systems is which type?
• What is the most effective method for preventing sexual harassment in the workplace?
• A two-pipe hydronic system that uses a reverse-return arrangement is called a?
• In medical gas systems, which trade is primarily responsible for describing test procedures for brazed joints?
• The abbreviation pH stands for
• An example of a fixture or appliance that produces indirect waste only on occasion is a(n)
• Which statement best describes the cadence of code additions by professional code development organizations?
• In order to lower the pH value of water in a pool, add
• Recirculation systems are installed in pools in order to
• New sewage should enter the septic tank no less than 15 inches below the
• Uninsured costs for occupational injuries or deaths include which of the following?
• In cold climates, what is the minimum recommended soil cover depth above the septic tank?
• The seven-minute peak demand period is used to estimate which category of water usage?
• What component provides the physical shape of a private well and helps prevent contamination?
• Brazing filler materials melt within which temperature range?
• Which temperature range is allowed for the central nitrous oxide supply system?
• Control panels and alarms for medical gas and vacuum systems must be installed by which professionals?
• Purging copper tubing before sealing during brazing is done to prevent the formation of which oxide?
• The maximum permitted distance between labels on copper tube used for medical gas and vacuum systems is how many feet?
• Which heat transfer mode is energy transfer by electromagnetic waves through empty space?
• Which system relies on natural convection to move the heat-transfer fluid between the solar collector and storage tank without using a pump?
• In a firm-fixed-price contract, the contractor's profit is incorporated into the bid.
• When documenting information about a problem for the record, you should ___.
• If planning reveals a gap in essential skills among crew members, which action is appropriate?
• Local plumbing codes are increasingly being changed to allow the use of which?
• If failure would have no effect on patient care, it is categorized by NFPA 99 as which category?
• When installing more than one riser to the hot water supply main, the most typically used connection type is the
• Distribution pipes are sometimes covered with nylon screen material to
• The initial cross-connection test is conducted with the system pressurized to what value?
• At what temperature threshold should wastes be discharged into a cooling basin?
• To learn about other nearby water wells when choosing a location for a well, the driller should consult a what?
• NFPA 99 applies to the medical gas systems in healthcare facilities: true or false?
• What is the minimum depth for the bed under distribution pipes?
• Which pipe material is not approved for hot tubs and spas?
• An example of an indirect cost would be __.
• A reliable private water supply well system starts with a good what?
• Which statement about pool volume units is correct in the example?
• Which statement accurately describes the effect of the verifier's piping purge test?
• On a one-pipe hydronic system, which device allows a single pipe to act as both supply and return main?
• Wastes that must be treated before they can be safely discharged are called which of the following?
• To determine whether a project is staying within budget, a contractor relies upon updates from __.
• The use of adapters or conversion fittings to adapt one gas-specific fitting to another is prohibited by code. True or false?
• What term describes the liquid portion of wastewater from soil absorption systems?
• Submersible pumps are installed at the bottom of the well below the water level.
• During piping purge test, who conducts this test?
• The abbreviation BOD stands for Biochemical oxygen demand.
• Before final assembly of a hot tub, you should perform a test-fit on which components?
• Mobile homes and travel trailers must conform to the local codes in force where they ______.
• The process of compiling and analyzing financial records is called __.
• The well casing adaptor on a deep well jet pump is to prevent
• Which practice best promotes safety culture on a crew site?
• To identify and assess hazards, it is essential that employers ___.
• A multipurpose extinguisher that can be used on liquids, gases, or ordinary combustibles is labeled which of the following?
• Baffles are partitions placed in an interceptor to do which?