Propane Gas Safety and Installation Certification Practice Test

These questions are part of the practice quiz. Start practicing

• Gas piping inside any building is prohibited from being installed in which of the following spaces?
• Who administers and enforces the National Fuel Gas Code?
• What safety measure is advised for the installation of gas appliances in confined spaces?
• ASME containers with more than 2,000 gallons water capacity must have an opening for what?
• What do we call the extra air that passes through the combustion chamber beyond what is needed for complete combustion?
• A type B-W gas vent must terminate at least how many feet in vertical height above the bottom of the wall frame?
• What must be followed for the operation of the automatic main gas control valve and other electrical devices?
• What is the primary safety concern with cylinders used in experimental purposes when manifolded?
• Which type of gas appliances are allowed to be vented to atmospheres other than inside?
• How many means of closing must emergency shutoff valves have?
• Under what condition must containers involved in a fire be permanently removed from service?
• What must be installed where a nonmetallic gas hose connector is attached to the building piping?
• What should be replaced when a flanged joint is opened?
• Which permit allows a holder to engage in any phase of the LP Gas business?
• What is a key requirement for the installation of gas appliances?
• A Class X manager shall be considered actively supervising if present at the base of operation at least ________ of the reasonably normal hours.
• What is the minimum clearance to combustible materials for unlisted suspended-type unit heaters?
• What is the minimum pressure test that should be conducted regardless of the design pressure?
• What should be done after detecting leakage during a gas supply test?
• What is required for proper installation of combustion air supply for fuel burning appliances?
• Which is an acceptable medium for pressure testing?
• What is the minimum required distance between propane containers with a water capacity of 501 to 2,000 gallons?
• For what reason must containers that have been in a fire be requalified?
• Equipment used with LP-gas should be fabricated from materials that are what?
• Which of the following is NOT a reason for filling a container with water or inert gas before abandonment?
• What is the role of the equipment shutoff valve in gas piping systems?
• Indirect vaporizers must be constructed according to the applicable provisions of which code for a design pressure of 250 psig?
• All Class I permit holders must have a current copy of _____________ on file at each branch.
• Brazing filler material for tubing joints shall have a melting point exceeding which temperature?
• What is the minimum cover required for polyethylene and polyamide piping installed outside and underground?
• Within how many years should the pressure relief valve be replaced for cylinders used in industrial truck service?
• Which organization’s approval is necessary for the installation of containers on roofs?
• What type of fuel connection is prohibited between a tractor and another vehicle?
• Who must be trained when installing polyethylene piping?
• Which of the following statements is true regarding the installation of cooking appliances?
• What is a fixed liquid level gauge that indicates the maximum permitted filling limit of a container?
• What is the status of containers fabricated before April 1, 1967, that have been maintained and requalified?
• What is required to fill or purge a container that will be abandoned underground?
• What is the condition for aboveground containers?
• When two or more vent connectors enter a common vent, which connector should enter at the highest level?
• Which device should NOT be disregarded in terms of LP Gas safety?
• What is the minimum distance required for a 1,000-gallon container from another LP-gas container of more than 125 gallons?
• What is commonly referred to as a vessel used for transporting or storing LP-Gases?
• What type of foundation should all dispensers be installed on?
• Which material shall NOT be used for upper and lower casings of regulators?
• What type of protection must be used to safeguard the appurtenances of cylinders with a water capacity of 1,000 lbs or less?
• All LP gas containers must have their pressure relief valve in direct communication with which part of the container?
• What is the minimum height that a chimney must extend above the highest connected equipment draft hood outlet?
• What is a compartment or chamber connected to ducts that forms part of the air distribution system called?
• How many feet must a chimney extend above the highest connected gas appliance?
• How should mechanical draft systems be classified?
• Which type of devices are crucial for controlling hazards in steam and hot water boilers?
• What is the maximum internal diameter for transfer hoses used for connections to individual containers being filled indoors?
• What must be provided for Type 2 clothes dryers to allow for proper functioning?
• The maximum design operating pressure for indoor piping systems should not exceed what value unless welded?
• Which component is NOT a part of safe propane gas installation?
• What benefit do shielded ignition systems provide for engines used with LP-gas?
• From what point should distances for all underground or mounded ASME containers be measured?
• What connects a fuel gas burning appliance to a vent or chimney?
• Emergency shutoff valves with a fusible element shall have a melting point NOT exceeding what temperature?
• A regulator's casings should not use non-metallic parts for what reason?
• What is the required slope for a vent connector during installation?
• For a high pressure regulator with an overpressure protection device, what must the device limit the outlet pressure to when the regulator seat disc is removed?
• What type of piping material is limited to vapor service pressures mentioned earlier?
• Which of the following should NOT be used to test for gas leakage?
• What should be done if a pilot flame goes out in a gas appliance?
• Changes in direction of gas pipe must be made using which items?
• Excess flow valves in propane systems are designed with a bypass not to exceed what size opening?
• What is the minimum bulk propane storage capacity required for Class I permit holders?
• A chimney for residential-type gas appliances must extend at least how many feet above the roof where it passes through?
• What type of appliances derive all air for combustion directly from the outside atmosphere?
• What must be used to secure a vehicle transporting LP Gas when parked?
• Which of the following is true regarding the maintenance of containers fabricated to earlier regulations?
• Clearances from combustible materials for unlisted air-conditioning appliances must be at least how much?
• For installations of a tank heater of 500 gallons water capacity or less, what is the minimum required distance from external exposures?
• Which type of gas vent is preferred for high-efficiency appliances?
• Polyethylene piping systems are limited to vapor service not exceeding which pressure?
• Which of the following is NOT a requirement for a cargo tank vehicle in LP Gas operations?
• During minor renovations, the number of containers in a building shall not exceed what?
• The distance measured horizontally from the point of discharge of a container pressure relief valve to any building opening must follow what?
• What is needed to protect underground metallic piping against soil conditions?
• If a gas piping system displays a pressure decrease, what does it indicate?
• To ensure proper venting, gas vent systems must be installed above which component of a gas appliance?
• The cross-sectional area of the common vent must be equal to or greater than what?
• What should portable DOT containers designed to be filled by weight be marked with?
• Which of the following is NOT a permissible fitting type for concealed locations?
• What is a primary concern when using portable heaters in relation to safety?
• What is the minimum individual water capacity for fixed installations that requires plans to be submitted for approval?
• What characterizes a Category I vented appliance?
• What is the initial boiling point of commercial propane at 14.7 psia?
• What is the maximum overall length for flexible metallic connectors used with liquid or vapor piping on stationary containers of 2000 gallon w.c. or less?
• Before a piping installation is accepted for operation, what must be done?
• The class of permit that allows a holder to transport LP Gas to producers or distributors is known as what?
• How much higher must a chimney extend compared to any building portion within 10 feet?
• The installation of which component is prohibited inside an elevator shaft?
• When abandoning a container underground, what should be used to remove remaining gas vapor?
• Is it permissible to stack containers one above the other?
• Where must the pressure relief valve of all containers be positioned?
• What must indirect vaporizers be equipped with to prevent liquid from passing through?
• Where should the sediment trap be installed relative to the equipment?
• Cylinders used for training purposes in the same room must be separated by what minimum distance if more than one container is present?
• What is true about the types of gas appliances allowed in healthcare facilities?
• What must direct-fired vaporizers be permanently marked with?
• What permit allows the holder to transport LP Gas as a common or private carrier?
• What is the maximum capacity for individual LP-gas containers used on non-passenger carrying vehicles?
• What is a potential hazard of improperly installed venting systems?
• How many pressure relief devices must ASME containers be equipped with at a minimum?
• In a gas appliance installation, how should the vent connector be configured?
• Which type of piping is permitted for use when working with LP-Gas?
• What type of pressure relief valve is required for DOT and ASME engine fuel or mobile containers?
• Which of the following is NOT allowed with re-circulating systems in dangerous environments?
• Which type of venting system must listed vented wall furnaces use?
• What is the maximum outlet pressure setting for single-stage regulators?
• In cold climates, uninsulated single-wall pipe shall NOT be used for what purpose?
• Which device is required to minimize the entrance of water or matter into the relief device or discharge piping?
• What is the primary function of a pressure relief device in an ASME container?
• What is the minimum vertical distance that must be maintained from mechanical draft vents to any door or operable window?
• Is the installation of lightning protection equipment required on LP-Gas storage containers?
• What is the minimum height for exit terminals of mechanical draft systems when adjacent to public walkways?
• Gas piping serving heating appliances is allowed to also serve what other equipment?
• Metallic pipe joints can be joined how according to safety regulations?
• What is prohibited during public hours in a building undergoing minor renovations concerning propane cylinders?
• Which of the following is NOT a method of closing an emergency shutoff valve?
• For each Class X Manager's examination, how many questions shall be drawn from the reservoir?
• Which statement accurately reflects the requirement for containers placed outdoors?
• How many non-refillable containers, each with a maximum capacity of 1.08 lb, are permitted for commercial food service appliances?
• Which of the following is essential for securing the stability of a cargo tank vehicle?
• What does a 'natural draft' in gas systems primarily rely upon?
• What type of gas piping would require the removal of permanent construction to access?
• A cylinder shall ________ if it is NOT suitable for continued service.
• What is the primary design requirement for forced draft systems under positive pressure during operation?
• What is the recommended spacing for supports of 3/4" or 1" steel pipe?
• Hose length at a dispensing station may NOT exceed what length unless otherwise approved?
• Which insurance is NOT required from an applicant for a Class I Dealer permit?
• What is the minimum vertical distance required between food service hot plates and combustible materials?
• What type of air should be handled by non-circulating direct gas-fired industrial air heaters?
• What is the maximum water capacity for LP-gas containers used on passenger carrying vehicles?
• How should cooking appliances be installed in relation to the cooking top or oven racks?
• What is the required slope for piping in a system where vapor condensation can occur?
• What is the proper location for exhausting Type 1 and Type 2 clothes dryers?
• How far must one opening commence from the top and bottom according to the Two Permanent Openings Method?
• What should not be done to temperature sensitive elements of emergency shutoff valves?
• What does the term 'placarded' refer to in the context of transporting cylinders?
• What is the primary purpose of an overfilling prevention device in LP Gas operations?
• What is the minimum requirement for listed gas-fired toilets to be installed on combustible floors?
• What is the primary function of a "NO SMOKING" sign in areas where LP-gas is stored?
• When operating cooling and heating equipment simultaneously, what is permissible?
• What is the minimum distance a draft hood's relief opening should be from any surface?
• What is the minimum distance equipment with a draft hood must be from combustible material when installed in a single-wall metal pipe?
• What type of valve should equipment connected to a piping system have?
• Where should re-circulating direct gas-fired industrial air heaters NOT be used?
• What is the maximum operating pressure for piping that contains liquid LP-gas and requires hydrostatic relief valves?
• What is the maximum horizontal length for a vent connector for each inch of connector diameter?
• All bulk storage of ____ gallons and above must be labeled with the contents and a "NO SMOKING" sign.
• What is the minimum design pressure required for ASME containers installed in enclosed spaces on vehicles?
• LP-gas containers should not exceed certain limits for safety. What is the maximum allowed capacity for containers on passenger vehicles?
• Which type of heaters should NOT be installed in or attached to combustible walls unless they are listed for such installation?
• In what conditions should polyethylene piping typically be installed?
• At a motor fuel dispensing station, hose length may NOT exceed what without AHJ approval?
• What is the main risk associated with an improper sediment trap installation?
• Which type of fittings is permitted in concealed locations?
• ASME code is primarily concerned with which area?
• What is the required vertical clearance above cooking appliances to combustible materials?
• What is the importance of painting aboveground containers?
• Buildings that are not fire resistive should be located how far from a point of transfer?
• What action should be taken if leakage is indicated during a pressure test?
• How high must a chimney for medium-heat equipment extend above a building?
• What is the term for the air that mixes with flue gases in a draft hood?
• Where should a gas vent extending through an exterior wall NOT terminate?
• What should be done to annular spaces around penetrations for vents and combustion air intake pipes?
• What should not be present in any portion of a venting system?
• Where should appliances be located to ensure proper circulation?
• When locating containers outside buildings, they must be positioned with respect to which of the following?
• What must be ensured regarding the number of propane cylinders and workers in a building?
• When can a vent connector be connected to a chimney flue serving a fireplace?
• What is a defining characteristic of a type B-W gas vent?
• What is the purpose of dilution air?
• Which type of copper tubing is acceptable for propane installations?
• What is the minimum distance a single 1,000-gallon aboveground container must be installed from any building?
• Regulators for outdoor installations must be designed to prevent what?
• Containers, other than aluminum, must be what after being involved in a fire and showing no distortion?
• Which type of valves are prohibited from being located between a pressure relief device and the container unless a listed PRV manifold is used?
• Where should ASME containers and cylinders not be stored or transported?
• What is the preferred method of connecting any appliances to venting systems?
• Engines used to drive portable pumps and compressors shall be equipped with __________.
• What type of draft is produced by the difference in weight between flue gases and outside air?
• A 350-gallon container installed alongside a building must be how far from the portion of the building that projects out?
• What is an important part of the installation of fuel containers?
• How is the capacity of an LP-Gas container determined?
• According to NFPA 82, which type of equipment must be vented?
• What is the minimum clearance required on all sides and the rear for an unlisted pool heater?
• If outside, piping shall be installed under the vehicle and positioned where?
• What is required to prevent damage to the building structure or appliances and equipment?
• Which device is critical for preventing the overfilling of LP Gas cylinders?
• What is the term for the amount of water required to fill a container at 60 degrees F?
• What is the required separation distance for more than one container used for training in the same room?
• What happens if liquid LP-Gas pressure develops between shutoff valves?
• What is crucial to maintain the integrity of a gas control system?
• What is the maximum allowable flow area for a vertical vent compared to the listed appliance vent area or draft hood outlet?
• When is the outlet pressure of the second-stage regulator limited to 2.0 psig?
• What is essential for maintaining the structural integrity of installations?
• Which type of regulator is designed for lower pressure LP-Gas applications?
• What condition must DOT cylinders meet before they can be refilled or transported?
• If cylinders used in industrial settings are manifolded together, what is the maximum total propane capacity allowed?
• What is a consequence of inadequate clearance of venting systems around obstructions?
• What is a necessary item to carry in a cargo tank vehicle during loading or unloading?
• What main role do protective housings serve for transportable tank systems?
• How should emergency shutoff valves be maintained?
• In what situation may the authority having jurisdiction retroactively apply portions of the code?
• What is the restriction regarding the passage of single-wall metal pipe vent connectors through ceilings, floors, or walls?
• What type of permit is specifically designated for managing LP Gas?
• Listed floor-mounted food service equipment must be installed at least how far from combustible material?
• What type of valve must be installed at the discharge end of the transfer hose at vehicle fuel dispensers?
• Sparks from what component can be a fire risk in LP-gas systems?
• How many feet vertically must a Type B-W gas vent terminate above the bottom of a wall furnace?
• What is essential to have in place to prevent gas flow in a portable heater?
• Cylinders with water capacities greater than __________ shall NOT be located on decks or balconies of multi-unit dwellings above the first floor.
• When is it permissible to refill a DOT cylinder?
• What type of equipment must be coated or protected to minimize corrosion when buried or mounded?
• What is the safe practice after a pressure test shows no leakage?
• Where should ASME connections for pressure relief valves be installed?
• What is the key purpose of exhaust system spark arresters in engines driving portable pumps?
• Gas piping should not be installed through which of the following to avoid safety hazards?
• What action should be taken immediately after turning on the gas in a new system?
• How should the safety of transporting LP Gas be ensured according to regulations?
• Integral two-stage regulators shall NOT incorporate which feature in the high-pressure regulator portion?
• What type of modifications or installations require that gas pipe access must generally be direct and easy?
• What type of permit is required for a person actively managing LP Gas operations?
• A cylinder with an expired requalification date shall NOT be refilled until it is requalified by the methods prescribed in DOT regulations. What must be ensured regarding such a cylinder?
• The sniff test to detect odorization should be conducted under which condition?
• In which type of occupancies are room heaters prohibited from installation?
• Which type of pipe fittings should not be used for metallic pipelines and tubing?
• How often must Class I and Class X permit holders attend a sanctioned safety seminar?
• During a pressure test for a single-family dwelling, the system should show no change in pressure for how long?
• Portable heaters must have an approved device to shut off gas in case of what event?
• What is the purpose of a quick-acting shutoff valve at the discharge end of fuel dispensers?
• Field welding on propane containers is limited to attachments on which parts?
• What is the maximum propane capacity allowed for containers used in a public building during minor renovations?
• Single-wall metal pipes should not pass through which of the following?
• Connections to ASME containers installed underground must be located within what type of structure?
• Which code governs the construction of indirect vaporizers for LP-gas?
• What term describes the additional air that is not required for combustion but enters the system?
• What is the minimum cover depth required over all underground metallic piping?
• What kind of installation protection is mandatory for water heaters?
• What does the overfilling prevention device NOT serve as?
• What type of valve should be installed in sections of piping where liquid LP-Gas can be isolated?
• In an emergency shutoff system, what function does a fusible element serve?
• How should air be supplied to industrial air heaters?
• Aboveground containers with a capacity of 501 to 2,000 gallons should be located what distance from a building?
• Which aspect of transportation safety is critical when dealing with LP Gas?
• What is the purpose of a safety shutoff device?
• What is necessary for indoor combustion air supply?
• What must be provided to prevent boiler steam pressure from exceeding safe limits?
• What must be done to fuel containers to prevent them from becoming loose?
• Mechanical draft venting systems must terminate at least how many feet below any door or operable window?
• What gas should a new piping system NOT be tested with?
• Single-wall metal pipe must extend at least ______ above the highest point where it passes through a roof.
• What is the duration of the warranty required for new propane containers sold or installed in Oklahoma?
• A system being leak tested should not show any change in pressure for how long?
• What device must gas fired heating appliances have to manage gas flow if the pilot flame goes out?
• What is the maximum weight for portable refillable LP-gas cylinders not filled on site to require a warning label?
• What action must be taken regarding vent connectors in relation to fireplaces?
• Which organization’s standards should containers be designed, fabricated, tested, and marked in accordance with?
• How many months after the renewal date can a semi-annual permit be issued?
• What is the lower flammability limit of propane vapor?
• In gauging devices requiring the bleeding of product to the atmosphere, what is the maximum bleed valve opening size to the atmosphere?
• Where is the transfer of liquid into containers mounted on vehicles prohibited?
• What should be included in a water heater installation?
• Which appliances are NOT required to have venting?
• What score is required to pass all examinations in this certification program?
• What concentration in air is the limit for odorizing LP gases prior to delivery?
• What regulatory guidance governs the labeling of vehicles that transport LP Gas cylinders?
• What type of compound must be resistant to the action of liquefied petroleum gas?
• What should be done with liquid LP-gas in a container that is to be abandoned underground?
• How should piping in systems be run for efficient operation?
• Which of the following is essential for ventilation in space with combustion appliances?
• When should back flow check valves close?
• Vehicles transporting cylinders over 1000 lb must be labeled according to which regulations?
• What is a critical safety requirement for underground abandoned containers?
• What is the status of installing containers on the roof of a structure?
• If a safety shutoff device is not functioning properly, what should be done?
• LP-Gas containers must be protected from damage caused by what?
• What must be done to determine compliance with code requirements before operating newly installed gas piping?
• Which component is essential for maintaining safety in the event of a fire?
• According to the standard method, what is the minimum volume of combustion air required?
• For venting purposes, what is a critical height for gas vent termination above the building structure?
• In case of an incident involving LP-gas systems, the dealer must notify the LP gas administrator __________.
• What is the minimum distance required between a point of transfer and mainline railroad track centerlines?
• Indirect atmospheric-type vaporizers with a capacity of less than 1 quart are NOT required to be equipped with what?
• Why is odorizing LP gases important before delivery?
• Every container built after December 1, 1965, designed to be filled volumetrically must include a:
• What type of protection should be provided for connections to underground ASME containers?