Oregon Class 5 Pressure Piping Mechanic License Practice Test

These questions are part of the practice quiz. Start practicing

• What role does insulation play in pressure piping systems?
• What is the importance of a vacuum breaker in certain piping systems?
• Which type of vessels falls under exemption from annual inspection?
• What is a common practice for preventing thermal shock in piping systems?
• According to B31.5, soft drawn copper tubing larger than what diameter shall not be used?
• Why is the knowledge of chemical compatibility important in pressure piping systems?
• What does pressure testing validate in a piping system?
• What role does a flow meter play in a pressure piping system?
• Describe the significance of a piping schematic.
• Which code section is designated for Refrigeration systems?
• True or False: Oxy-acetylene bottles can be transported using an ANSI approved cylinder sling.
• How many total hours of work on pressure piping must you have to apply for a Class V license?
• What additional factor affects the pressure requirements of a piping system?
• When the weld symbol is on the top of the welding symbol arrow, where will the weld be located?
• What is the role of a pipe hanger?
• What is the main reason for inspecting pressure piping systems?
• Which piping code section is crucial for safety in high-pressure applications?
• Which of the following is an aspect to consider for piping installation in relation to environmental conditions?
• What is a significant concern with "dead legs" in piping systems?
• What is the purpose of using Teflon tape on threaded connections?
• What is the included angle of a standard center punch?
• Which code section specifically covers Power Piping?
• What does the term 'hydrostatic test' refer to in pressure piping?
• Under which ASME section is brazing covered?
• What is the typical procedure for making a butt weld?
• What is the primary goal of using safety warnings in pressure piping systems?
• Which code section pertains to the design of pressure vessels?
• What is the role of the Chief Inspector regarding inspections?
• Define "ductile materials" in the context of pressure piping.
• When there are two blowdown valves, what types are they typically?
• What does the term 'brittle fracture' refer to in pressure piping?
• What pressure range is generally considered for various pressure piping systems?
• When should maintenance checks be performed on pressure piping systems?
• What is a common indicator that a pressure relief valve may need maintenance?
• What type of piping is typically used for gas distribution?
• What does the term 'bending radius' refer to?
• What is the exemption limit for medical sterilizers in terms of cubic feet?
• In pressure piping systems, what does the term "back pressure" refer to?
• What is the significance of pipe diameter in pressure piping systems?
• What is the main purpose of pressure relief valves?
• Which of the following is a common application for pressure piping systems?
• True or False: Any person holding a license under ORS 480.630 is required by law to report an accident, or major failure of a vessel or related appurtenance to the Building Codes Division.
• Describe the term "cyclic loading" as it relates to pressure piping.
• Why is insulation used in piping systems?
• What are the consequences of not conducting proper testing before a pressure piping installation goes live?
• What is a common maintenance check performed on pressure piping systems?
• Why is thermal shock a concern in piping systems?
• Which of the following verifies a friction lighter’s function?
• What type of testing is usually performed to verify the integrity of pressure pipes?
• Are air tanks located on farms, used solely for agriculture, exempt from regulations?
• When unbolting a flange in an isolated system, you must:
• When cutting pipe with a heat number, at what point do you transfer the number?
• Which code section is used to regulate Process Piping?
• How does one determine if a pipe is suitable for a given application?
• What is the key precaution when working with hazardous piping fluids?
• What type of valves are commonly used to isolate sections of pressure piping?
• What is the purpose of a pipe mock-up?
• True or False: The Boiler Inspector report outlining the work to be performed must be posted on or within sight of the boiler to be worked upon.
• What is the minimum pipe size allowed on a control loop for a steam boiler?
• What is the most commonly used extinguishing agent on Class A fires?
• What type of piping is primarily used in high-temperature applications?
• What tool is commonly used to assess the tightness of piping joints?
• What should be considered when installing underground pressure piping?
• What safety equipment is essential for working with pressure piping systems?
• How can soil conditions impact underground pressure piping installations?
• Which type of joint should be avoided in high-stress applications?
• What is the primary focus of code section B31.9?
• Which maintenance strategy helps prevent leaks in pressure piping systems?
• What is one advantage of using welded pipe joints?
• What is the non-standard term used for a pipe fitting that connects at a right angle?
• What is an 'expansion joint' used for in piping?
• When is a pressure test not required according to ASME B31.3?
• What is the significance of the pressure ratings indicated on piping materials?
• What is one of the primary concerns when working with pressurized fluids in a pipeline?
• What is the maximum allowable working pressure (MAWP) for a common pressure piping system?
• What component is essential for temperature regulation in pressure piping?
• What does ASME stand for in the context of pressure piping?
• Is it true that a friction lighter is a striker?
• Is it true that a person holding a Class IV or Class V license is required to supervise someone with a Class VI license?
• What class of fire is classified as burning magnesium?
• What is the main function of pipe insulation in a chilled water system?
• How is pipe thickness measured in accordance with ANSI standards?
• What role do piping identification tags serve in a piping system?
• What is the maximum pressure allowed for a Class 150 flange?
• Which test is commonly performed to ensure the quality of welds in pressure piping systems?
• What is the function of an automatic blow-off valve?
• What is the formula for calculating the circumference of a circle?
• Repair permits for piping work are issued to whom?
• What is a common material used for water piping systems?
• What is a typical sign that a pressure piping system requires maintenance?
• When is a piping system required to have a secondary containment?
• Which factor can lead to material degradation in pressure piping systems?
• What is one reason to use threaded joints over welded joints?
• What is the importance of proper drainage in pressure piping systems?
• When securing wire rope, where should the saddle of the clip be placed?
• What impact does temperature have on pressure piping materials?
• To determine the pressure at the bottom of a water column, you multiply the height by:
• How often should pressure relief valves be tested?
• Which method is primarily used for joining metal pipes in pressure piping systems?
• What system identifies pipes, valves, and equipment by color codes?
• Which code is specifically for piping systems used in industrial refrigeration applications?
• Is it true that an employer will be fined an amount equal to or greater than an employee's fine for violations of Oregon law requiring a boiler license?
• What is the purpose of an expansion joint in a piping system?
• What is a primary consideration when transporting hazardous materials in pressure piping?
• What does code section B31.4 cover?
• Which code section would be relevant for the installation of petrochemical piping?
• What is the minimum distance that acetylene should be stored away from oxygen?
• What is the function of a pressure relief valve in a piping system?
• How many gallons are there in a cubic foot?
• Which type of valve is commonly used for on/off applications?
• The Chief Inspector can enter all buildings for inspections at reasonable hours, except for which of the following?
• Which factors are evaluated to determine the suitability of a pipe?
• Under what condition are pool boilers exempt?
• What is a major benefit of using carbon steel in pressure piping?
• Are the threads on oxygen and acetylene hoses the same?
• Name an advantage of using plastic piping in some pressure applications.
• What is the general requirement for pipe support spacing?
• In what situations is a double block and bleed system recommended?
• What is the purpose of pressure testing?
• What does the term "heat affected zone" refer to in welding?
• Describe the purpose of a backflow preventer in a piping system.
• Which piping material is typically used for high-temperature applications?
• What is meant by "dead legs" in pressure piping systems?
• True or False: Journeyman plumbers are exempt from having a Class 5 license to install or replace by non-welded means, a potable domestic water heater, not used for space heating up to 200 gallons, 210 degrees, 150 psi and 750,000 Btu.
• What is welder qualification?
• What is the term 'dead leg' in piping systems?
• When hydro testing new boiler external piping, what is the required testing pressure?
• How often should piping systems be inspected for safety?
• What does the term 'thermal expansion' refer to in pressure piping?
• What type of material is commonly used for high strength and high-temperature applications?
• What factors are considered in pipe selection for a project?
• What is the primary reason to incorporate insulation in hot water piping?
• Which agency must approve pressure relief devices?
• Why must flammable fluids be handled carefully in pressure piping?
• What is the typical range of pressure ratings for PVC piping?
• What is essential to know when selecting a pipe material for a specific fluid?
• What is the difference between schedule 40 and schedule 80 piping?
• What code section governs Building Services Piping?
• What is the purpose of the 'drain' in a piping system?
• What is the function of a strainer in a piping system?
• What is the function of a pressure gauge in a piping system?
• What is the primary function of pressure relief valves in piping systems?
• When is a piping system classified as 'non-hazardous'?
• What type of gasket material is commonly used for high-temperature applications?
• What is the function of a check valve in a piping system?
• Is adding a pipe branch by welding allowed only under certain conditions?
• Identify a common material used for pressure piping in industrial applications.
• What type of fittings are typically used at every right angle in control piping?
• What is the difference between ANSI and ASME?
• What is a potential risk of not using a pressure relief valve?
• What kind of seal is typically used in pressure piping to ensure leak proof connections?
• What is the function of a pressure relief valve?
• Why is it important to follow applicable codes in pressure piping installation?
• What is the scope of B31.3?
• What is the minimum and maximum percentage of operating pressure used to test pipe covered under B31.5?
• Which code governs the installation of pressure piping in Oregon?
• What is a common method for detecting leaks in pressure piping?
• What should always be done before performing maintenance on a pressure piping system?
• What is the main hazard associated with pressure piping systems?
• Name one common installation method for pressure piping.
• What is the main benefit of conducting cyclic loading assessments on pressure piping?
• Is inspection of Category M piping required if the authorized owner representative conducts an inspection?
• What is the purpose of using threaded connections in pressure piping?
• What type of hydronic system can be exempt from inspection in a private residence?
• What is the penalty for working on pressure piping without a license?
• What is the name of the list showing components used in an isometric drawing?
• Which code section specifies requirements for piping in chemical process plants?
• In the context of A53F pipe, what does the letter F stand for?
• How can pipes be protected from corrosion?
• Explain the term “design pressure” in the context of pressure piping systems.
• Identify one advantage of using flanged joints in pressure piping.
• What is the implication of choosing an incorrect pipe size in pressure systems?
• What type of protective coating is commonly applied to steel piping?
• Which code section addresses the safety standards for industrial piping?
• What is the purpose of using flanges in pressure piping systems?
• What safety purpose does a pressure gauge serve in a piping system?
• Which potentially dangerous oxides are produced when welding stainless steel?
• What is a common cause of pipeline failure in pressure piping systems?
• Which material is least suitable for corrosive environments in piping applications?
• What is the primary purpose of pressure piping systems?
• Which of the following is considered a "place of public assembly"?
• What is the exemption limit for refrigerant pressure vessels containing non-corrosive gases?
• What type of valve is commonly used for throttling flow?
• What are the common causes of pipe corrosion?
• What requirements does B31.6 cover?
• Why is it important to maintain a proper bending radius in piping?
• How many automatic low-water fuel cutoff devices are required for each automatically fired high-pressure steam boiler?
• Describe the term "hydrostatic testing."
• What is the primary purpose of pressure piping?
• Accidents have to be reported to the Building Codes Division within how many hours?
• Under B31.5, how are A1 and B1 refrigerants classified?
• Define "friction loss" in the context of pressure piping.
• Which piping code section is mainly used for the design and installation of HVAC piping systems?
• What is the role of the National Board of Boiler and Pressure Vessel Inspectors in piping systems?
• Which vessels are exempt from annual inspection?
• Which code governs the design and installation of pressure piping in Oregon?
• What type of stuffing box is commonly used on high pressure and temperature valves?
• Why is proper alignment important when installing piping?
• Why are safety warnings crucial in pressure piping installations?
• Which ANSI/ASME standard is focused on the construction of power piping?
• Is it true that a stop valve cannot be installed between the boiler and relief valve?
• What does the term 'NPS' stand for in piping?
• Explain the significance of pipe support systems.
• What method of testing is used on a root pass?
• Why is regular maintenance critical for pressure piping systems?