Propane Certification Practice Test

These questions are part of the practice quiz. Start practicing

• Which of the following must NOT be located between a pressure relief device and the container unless a listed PRV manifold is used?
• How should air be handled by non-circulating direct gas-fired industrial air heaters?
• What is prohibited regarding single-wall metal pipe vent connectors?
• In a tank heater installation of 500 gallons water capacity or less, what is the minimum distance required from external exposures?
• What auxiliary equipment is required to prevent water from entering LP Gas systems?
• What must be included in a pressure leak test according to safety standards?
• What permit allows a holder to engage in any phase of the LP Gas business?
• DOT cylinders shall NOT be refilled, continued in service or transported unless they are properly __________.
• How should cooking appliances be installed in relation to the cooking top or oven racks?
• What is the term for the draft created by the weight difference of flue gases and outside air?
• Cylinders of what capacity must incorporate protection against physical damage to their appurtenances?
• What is the importance of a fixed liquid level gauge in propane containers?
• What document is necessary for a person overseeing the operation of liquid propane gas?
• A ___________ is a compartment or chamber to which one or more ducts are connected and that forms part of the air distribution system.
• What is the purpose of installing an automatic limiting device on a boiler?
• What should be replaced when a flanged joint is opened?
• What is the purpose of an automatic shutoff in portable heaters?
• Which markings are required on direct-fired vaporizers?
• What determines the capacity of an LP-Gas container?
• What safety feature is required on portable heaters to prevent gas flow during flame failures?
• What does the term "water capacity" refer to in propane containers?
• LP-Gas containers must be protected from damage caused by what?
• What is the minimum clearance to combustible material for unlisted suspended-type unit heaters?
• Aboveground containers shall be ________.
• How frequently should supports be installed for piping to ensure safety?
• Single-stage regulators shall have a maximum outlet pressure setting of _______.
• Type 1 and Type 2 clothes dryers shall be exhausted to the ________.
• What type of vaporizer is used to convert liquid propane into gas?
• What should the cross-sectional area of the common vent be in relation to the cross-sectional area of the largest connector?
• Which material is prohibited for use with metallic pipe and tubing?
• What is the primary purpose of the Class X Manager's Permit?
• The installation of containers on the roof of any structure is what?
• How much higher must single-wall metal pipe extend above the roof where it passes through?
• What is the purpose of a fixed maximum liquid level gauge?
• Flexible metallic connectors for stationary containers of 2000 gallon w.c. or less should not exceed what length?
• Which type of container must not exceed 200 gallons in capacity when used on passenger-carrying vehicles?
• How should forced draft systems and portions of induced draft systems be designed during operation?
• What is required for indirect vaporizers to prevent an issue?
• What characterizes a Category I Vented appliance?
• What is the maximum allowable capacity of a non-refillable container used in food service according to the guidelines?
• A 350 gallon container installed alongside a building with an overhang extending 5.5 feet shall be located ________ from that portion projecting from the building.
• At what slope should a vent connector be installed?
• What is the maximum flow area a vertical vent can exceed in relation to the listed appliance vent area?
• Which type of gas appliance is specifically mentioned to be installed on combustible floors?
• What is the prescribed height of propane containers in public buildings during renovations?
• Which type of fitting is NOT allowed in concealed locations?
• What must the height of a chimney be in relation to connected equipment?
• Polyethylene piping systems are limited to vapor service not exceeding which pressure?
• What is the warranty period required for new propane containers sold in Oklahoma?
• What is the correct spacing of supports for 3/4" or 1" steel pipe?
• What type of device must be used as protection against physical damage for cylinders of 1,000 lbs water capacity or less?
• No portion of a venting system shall extend or pass through which of the following?
• Commercial-industrial-type incinerators must be vented according to which standard?
• If a safety shutoff device does NOT function properly, what should be done?
• What is the minimum height for exit terminals of mechanical draft systems located near public walkways?
• What is the minimum bulk propane storage capacity required for new Class I permit holders?
• What must appliances and equipment be furnished with to prevent damage to the building structure?
• Which characteristic is required for all underground metallic piping?
• Containers (other than aluminum) shall be ________ when they have been involved in a fire and show no distortion before being used or reinstalled.
• Which of the following is a safety requirement for LP-gas cylinders not filled on site?
• What generally indicates a successful pressure test in a gas piping system?
• What is the function of a cover for ASME containers installed underground?
• How high must a chimney for medium-heat equipment extend compared to adjacent buildings?
• A single 1,000 gallon water capacity aboveground container may be installed at least ________ from a building if it is also 25 feet from any other LP-gas container over 125 gallons w.c.
• What is the recommended pressure limit for polyethylene piping systems handling vapor service?
• Where should appliances be located in relation to air circulation?
• What does the Class II Permit allow the holder to do?
• How frequently must the container pressure relief valve be replaced for cylinders used in industrial truck service?
• Which of the following choices is NOT one of the means of closing the emergency shutoff valve?
• What type of materials should equipment be fabricated from in LP-gas applications?
• What defines a type B-W gas vent?
• In a venting system, what should be avoided to maintain safety?
• Why are chock blocks required for cargo tank vehicles?
• What type of valve is essential for safety at vehicle fuel dispensers?
• Field welding on propane containers is limited to attachments on which parts?
• If a gas vent is too low, which structural element of a building might it violate?
• What type of manual shutoff valve should equipment connected to a piping system have?
• What method must be provided to minimize the possibility of water entering relief devices or discharge piping?
• Mechanical draft systems must be what?
• For vehicles transporting LP gas, what does placarding signify?
• When should the sediment trap be installed in relation to the equipment?
• How many pressure relief devices are required on ASME containers?
• What is the minimum distance that equipment with a draft hood or Type B gas vents should be installed from combustible material?
• Where must connections to ASME containers installed underground be located?
• What condition applies when utilizing a high pressure regulator with an overpressure protection device?
• Gas piping serving heating gas appliances can also serve which type of equipment?
• What provision is necessary for Type 2 clothes dryers with respect to make-up air?
• What is the required design pressure for ASME containers installed in enclosed vehicle spaces?
• Regarding indoor combustion air, what method states the minimum volume shall be 50 cubic feet per 1000 Btu/hour?
• Which of the following is NOT a requirement for a venting system?
• What is the maximum size of the bypass opening for excess flow valves?
• ___________ is permitted for piping.
• Which process should take place if a leak is detected in a gas appliance system?
• Indirect vaporizers shall be constructed according to the ASME code for a design pressure of ________.
• The transfer of liquid into containers mounted on vehicles shall NOT take place under which of the following conditions?
• For each Class X Manager's examination, a total of _____________ questions shall be drawn from the reservoir.
• Containers shall be designed, fabricated, tested, and marked in accordance with which of the following?
• For systems with flue gases, what does the draft rely on?
• Where a container is to be abandoned underground, as much liquid LP-gas as possible shall be what?
• What is the minimum vertical height Type B-W gas vent should terminate above the bottom of a wall furnace?
• According to the Two Permanent Openings Method, one opening must commence within what distance from the top?
• Ventilating hoods and exhaust systems shall be ________ installed in commercial applications and to vent industrial equipment.
• Engines used to drive portable pumps and compressors shall be equipped with __________.
• What is the main consequence of not using an overfilling prevention device during filling operations?
• ASME code refers to which aspect of the American Society of Mechanical Engineers?
• What is the potential hazard of not painting aboveground containers?
• Containers fabricated to earlier editions of regulations prior to April 1, 1967 shall be what?
• According to propane regulations, what must be clearly marked on containers?
• Under which condition may the use of above-ground containers be authorized?
• What is the air that passes through the combustion chamber in excess of that required for complete combustion known as?
• A ___________ shall be installed in each section of piping and hose in which liquid LP-Gas can be isolated between shutoff valves so as to relieve the pressure that could develop from the trapped liquid to a safe atmosphere or product retaining section.
• When involving temporary installations, what must also be ensured along with safety?
• In which types of occupancies are room heaters NOT allowed to be installed?
• For unlisted air-conditioning appliances, what is the minimum clearance from combustible materials required?
• Containers that have been involved in a fire shall be permanently removed from service if they are which of the following materials?
• What is the minimum clearance required for an unlisted pool heater on all sides?
• What is the minimum distance required between a point of transfer and mainline railroad track centerlines?
• For proper installations, at what distance should a 1,000 gallon aboveground container be placed from a building?
• What is the minimum operating pressure for piping that requires hydrostatic relief valves?
• Single-wall metal pipe shall NOT pass through which of the following?
• What type of draft does a chimney or vent utilize?
• ASME containers and cylinders on vehicles used for purposes other than engine fuel systems shall NOT be what?
• The purpose of the Two Permanent Openings Method is to ensure what?
• A chimney for residential-type gas appliances must extend how much above the highest point where it passes through a roof?
• How many cylinders are allowed per worker using LP gas in minor renovations?
• How should the annular spaces around vent penetrations in outside walls be treated?
• Cylinders used for training purposes in buildings shall be separated by __________ if more than one container is in the same room.
• Where should an equipment shutoff valve be installed for nonmetallic gas hose connectors in indoor use?
• All LP gases must be odorized prior to delivery to a concentration not exceeding what limit in air?
• A chimney for residential-type or low heat appliances must extend at least how many feet higher than any portion of a building within a horizontal distance of?
• What regulatory body mandates the weight limit marking for vehicles carrying LP gas?
• What is the maximum water capacity for individual LP-gas containers used on non-passenger carrying vehicles?
• In a piping system where condensation of vapor can occur, how should the piping be configured?
• What is an acceptable material for filling a container that is to be abandoned underground?
• Which method provides the minimum volume requirement for indoor combustion air?
• What is the minimum distance a draft hood relief opening must be from any surface except the appliance it serves?
• Changes in the direction of gas pipe should be made using which of the following?
• What is required for containers that are repaired after being involved in a fire?
• Before initial operation, what is required for all piping installations?
• What must the pressure relief valve of a container be in direct communication with?
• From where shall distances for underground or mounded ASME containers be measured?
• If cylinders used in industrial occupancies for processing, research or experimental purposes are manifolded together, the total propane capacity shall NOT exceed what weight?
• Who administers and enforces NFPA 54/ANSI Z223.1, National Fuel Gas Code?
• What is an appropriate test medium for testing gas systems?
• During public access hours, what must be ensured regarding propane cylinders in a building undergoing renovations?
• What is the purpose of exhausting Type 1 and Type 2 clothes dryers?
• In which scenario is it acceptable to use re-circulating direct gas-fired industrial air heaters?
• What should be done to the vent connector before connecting to a fireplace flue?
• What equipment must each cargo tank vehicle and trailer carry to prevent rolling during loading, unloading, or parking?
• What is the minimum distance required between containers with a capacity of 501 to 2,000 gallons?
• What type of insurance must an applicant for a Class I Dealer permit furnish?
• A score of ___________ correct shall be a passing grade for all examinations.
• What should the air intake source for industrial air heaters ideally be?
• How often must Class I and Class X permit holders attend a safety seminar?
• The initial boiling point of commercial propane at 14.7 psia is what temperature?
• When is field welding on propane containers allowed?
• Which types of fittings are allowed in concealed locations?
• What is a recommended setup for preventing damage when installing gas appliances?
• How far must a mechanical draft venting system terminate below an operable window?
• Which of the following can NOT pass through any ceiling, floor, or wall?
• A cylinder shall ________ if it is NOT suitable for continued service.
• What is the maximum design operating pressure for piping systems located inside buildings?
• What is the maximum size of the bleed valve opening to the atmosphere for gauging devices?
• What must be done when abandoning a container underground?
• What is the term for any vessel used for storing or transporting LP-Gases?
• What is the main purpose of odorizing LP gases prior to delivery?
• Cylinders used with commercial food service appliances inside restaurants shall be permitted provided there are no more than how many 10 oz. non-refillable containers?
• What is the maximum allowed water capacity for LP-gas containers used on passenger-carrying vehicles?
• Which device is critical for ensuring gas flow is halted in case of malfunction?
• What is the primary concern regarding the storage of gas cylinders inside a vehicle?
• How many feet in vertical height must a type B-W gas vent terminate above the wall frame?
• According to DOT regulations or state law, how should vehicles transporting cylinders be marked when the total weight exceeds 1000 lb?
• Which of the following is NOT a required protection for a water heater?
• What is the minimum cover required when installing polyethylene and polyamide piping outside and underground?
• When should the sniff test to detect odorization be performed?
• What is the primary purpose of placarding on vehicles transporting LP Gas cylinders?
• What should be installed at the discharge end of the transfer hose at vehicle fuel dispensers?
• What function do back flow check valves perform?
• All Class I permit holders must have a current copy of _____________ on file at each of their branches.
• A cylinder with a(n) ____________, even if it appears to be undamaged, shall NOT be refilled until it is requalified by the methods prescribed in DOT regulations.
• How many months after the renewal date can a Semi-Annual permit be issued by the administrator?
• All dispensers shall be installed on what type of foundation?
• Is lightning protection equipment required for LP-Gas storage containers?
• What should an overfilling prevention device comply with to ensure proper filling of a cylinder?
• What is the minimum water capacity for tanks that must be protected from physical damage by location or housings?
• In case of accident or fire at any location where an LP-gas system or equipment is involved, who shall notify the LP gas administrator?
• For which appliance installation is a minimum clearance of 12 inches on all sides necessary?
• Why must outdoor regulators be protected against the elements?
• Which of the following is a critical safety feature for LP Gas transport vehicles?
• What type of appliances are designed to derive all air for combustion from the outside atmosphere?
• Gas fired heating appliances must have automatic devices to do what in case the pilot flame is extinguished?
• What is the minimum cover required over all underground metallic piping?
• What must portable DOT containers designed to be filled by weight display?
• Metallic pipe joints are permitted to be what?
• What is the specific height requirement for the pressure relief valve?
• Temperature sensitive elements of emergency shutoff valves shall NOT be ________.
• Re-circulating direct gas-fired industrial air heaters should NOT re-circulate room air in buildings that contain what?
• How far must buildings with non-fire resistive walls be located from a point of transfer?
• Where should a gas vent not terminate when extending through an exterior wall?
• What should thread compounds be resistant to, according to the guidelines for gas piping?
• Emergency shutoff valves shall have _________ means of closing.
• What type of vent is not suitable for high-efficiency appliances?
• What action should be taken if leakage is indicated during a test?
• When equipped with an overpressure protection device, a high pressure regulator must limit the outlet pressure of the second-stage regulator to __________ when the regulator seat disc is removed.
• What should gas piping inside a building NOT be installed in or through?
• Aboveground containers with a capacity between 501 to 2,000 gallons should be located how far from a building?
• Which of the following should NOT be used to test for gas leakage?
• To meet installation standards, Type B-W gas vents must be installed at least how far above a wall furnace?
• What should the electrical circuit for operating the automatic main gas control valve be in accordance with?
• Under what condition can an authority having jurisdiction apply code retroactively?
• All regulators for outdoor installations shall be designed, _______ or protected so that operation will not be affected by the elements.
• When connecting two or more vent connectors into a common vent, what is the recommended position for the smaller connector?
• How far should listed floor-mounted food service equipment be installed from combustible materials?
• What must be ensured for the automatic devices in gas fired heating appliances?
• Indirect atmospheric-type vaporizers of less than 1 quart capacity shall NOT be required to be equipped with __________.
• For maximum safety, flexible metallic connectors must be limited in length when used with which type of containers?
• Which item is crucial for ensuring safety during the loading and unloading of cargo tank vehicles?
• What is the minimum height that a chimney must extend above the highest connected equipment draft hood outlet?
• What should a new piping system not be tested with?
• What appliances are NOT required to be vented?
• Cylinders having water capacities greater than __________ shall NOT be located on decks or balconies of dwellings of two or more living units above the first floor unless they are served by exterior stairways.
• What is the minimum water capacity for fixed installations that must be submitted for approval?
• Which type of piping is designed to primarily handle vapor service according to pressure limits?
• What is the purpose of using direct vent appliances?
• What is the maximum horizontal length for a vent connector?
• What type of valve must DOT and ASME mobile containers have?
• What is the maximum weight of portable refillable LP-gas cylinders that must have a warning label applied if not filled on site?
• What should be ensured about the valve member in the manual shutoff valve of connected equipment?
• Brazing filler material for tubing joints must have a melting point exceeding what temperature?
• Which characteristic describes the role of the overfilling prevention device in filling operations?
• Leak testing of a propane system is critical for ensuring what?
• Every container built after December 1, 1965, designed to be filled volumetrically, must be equipped with what?
• What is the maximum hose length allowed at a motor fuel dispensing station unless approved by AHJ?
• What should be done if a back flow check valve fails?
• What protection should a water heater installation include?
• What does the design of mechanical draft systems aim to achieve?
• Emergency shutoff valves that incorporate an automatic shutoff with a fusible element shall have a melting point NOT exceeding ________.
• What type of permit is required for a person actively in charge of LP Gas operation?
• What material is specifically mentioned to be resistant to the action of liquefied petroleum gas?
• Which type of heater shall not be installed in combustible walls unless specified?
• Is it allowed to stack containers one above the other?
• A system being leak tested should show no pressure change for how long?
• All persons installing polyethylene piping must be __________.
• What type of fittings should be avoided for metallic pip and tubing to ensure safety?
• Which type of vaporizers do NOT require pressure relief valves if their capacity is less than 1 quart?
• How is the distance measured from the discharge point of a container pressure relief valve?
• What type of equipment must be coated or protected to minimize corrosion when buried or mounded?
• Which type of venting system should listed vented wall furnaces use?
• Immediately after turning on the gas in a new system, what must be done to ensure no gas is escaping?
• How far should training cylinders be separated if there is more than one in the same room?
• There is to be NO fuel connection between a tractor and what?
• What type of devices should steam and hot water boilers have for shutting down the burner?
• What is the maximum internal diameter of transfer hose that should be used for filling individual containers indoors?
• When installing vent connectors, where should they enter a gas vent or chimney?
• What action is required if a vehicle’s total weight including LP-Gas and cylinders exceeds 1000 lb?
• What is the maximum propane capacity allowed for containers in public buildings undergoing minor renovations?
• What should be the routing approach of piping in systems?
• What is the lower flammability limit of propane vapor?
• Which type of copper tubing is acceptable for use in propane systems?
• All bulk storage ____ gallons and above shall be lettered with the name of the contents, such as LP Gas, butane, propane, and a "NO SMOKING" sign.
• If outside, piping must be installed below any insulation or what other feature?
• What is the primary function of a pressure gauge on a propane container?
• What is the name of the pipe or duct that connects a fuel gas burning appliance to a vent or chimney?
• In terms of air supply, how should gas-fired appliances be positioned?
• A vent connector shall NOT connect to a chimney flue serving a fireplace unless what condition is met?
• What should underground metallic piping be protected against based on soil conditions?
• Containers installed outside of buildings shall be located with respect to which of the following?
• What should be done with containers that are to be abandoned underground?
• A class X manager shall be considered to be actively supervising if such a manager is present at least ________ of the reasonably normal hours of operation.
• What is the term for the air that enters a draft hood or draft regulator and mixes with flue gases?
• During pressure testing of a single family dwelling, how long should the pressure reading remain stable?
• Fuel containers must be what to prevent jarring loose?
• What is the minimum vertical distance required between food service hot plates and combustible material?
• What type of gas piping requires removal of permanent construction to access in a finished building?
• ASME containers with a capacity of more than 2,000 gallons must include an opening for what?
• Why is it crucial to monitor the vaporizing capacity of a vaporizer?
• Integral two-stage regulators __________ incorporate an integral pressure relief valve in the high pressure regulator portion of the unit.
• ___________ shall NOT be used for upper and lower casings of regulators.
• What is the minimum pressure test level required regardless of design pressure?
• What is the minimum vertical clearance requirement above the cooking top for household cooking appliances?
• What must be true for the piping system if the operating pressure exceeds 5 psi?
• The number of containers in a building undergoing minor renovations shall NOT exceed the ________ assigned to using the LP-gas.