Download Propane Practice Tests: Safety & Installation Guide and more Exams Refrigeration and Air Conditioning in PDF only on Docsity!
PROPANE PRACTICE TESTS WITH
COMPLETE SOLUTIONS
According to the Two Permanent Openings Method one opening must commence within ____ and one must commence within ___ of the enclosure ✔✔12 inches of the top 12 inches of the bottom
Room heaters shall NOT be installed in what occupancies? ✔✔Health care and Residential board and care.
Define a type B-W gas vent: ✔✔It shall not have a listed capacity NOT LESS than that of the listed vented wall furnace to which it is connected.
Listed vented wall furnaces shall use which type of venting system? ✔✔Type B-W gas vent
NO portion of a venting system shall extend or pass through any.... ✔✔Fabricated air duct OR Furnace plenum
The exit terminals of mechanical draft systems shall not be LESS than ___________ when located adjacent to public walkways. ✔✔7 ft above finished ground level
Forced draft systems and all portions of induced draft systems under positive pressure during operation shall be designed and installed so as to _____________. ✔✔Prevent leakage of flue gases into the building
Mechanical draft systems shall be _______. ✔✔Listed
A chimney for residential type or low heat appliances shall extend at least 2 feet higher than any portion of a building within a horizontal distance of _______. ✔✔10 feet
Category I Vented appliance ✔✔An appliance that operates with a non-positive vent static pressure and with a vent gas temperature that avoids excessive condensate production in the vent.
Type 1 and Type 2 clothes dryers shall be exhausted to the ________. ✔✔Outside
Ventilating hoods and exhaust systems shall be ________ installed in commercial applications and to vent industrial equipment. ✔✔Permitted to vent gas appliances
Temperature sensitive elements of emergency shutoff valves shall NOT be ________. ✔✔Painted
In a piping system where condensation of vapor can occur, piping shall be _______, or means shall be provided for re-vaporizing the condensate. ✔✔sloped back to the container
What is the minimum cover that should be maintained over all underground metallic piping? ✔✔12 inches
Polyethylene piping systems shall be limited to vapor service not exceeding ________. ✔✔ 30 psig
A listed __________ shall be installed at the discharge end of the transfer hose at vehicle fuel dispensers. ✔✔Quick-acting shutoff valve
Metallic pipe joints shall be permitted to be ____________ using proper pipe and fittings. ✔✔Welded or Brazed
Flexible metallic connectors shall NOT exceed _________ in overall length when used with liquid or vapor piping on stationary containers of 2000 gallon w.c. or less. ✔✔5 feet
Hose length at a motor fuel dispensing station may NOT exceed _____________ unless approved by AHJ. ✔✔18 feet
Unlisted air-conditioning appliances shall be installed with clearances from combustible material of NOT less than ____________ above the appliance and at the sides, front, and rear. ✔✔ 18 inches
The _______ employed for operating the automatic main gas control valve, automatic pilot, room temperature thermostat, limit control, other electrical devices used with the appliances shall be in accordance with the wiring diagrams certified or approved by the original appliance manufacturer. ✔✔Electrical circuit
The sediment trap shall be installed as close to the inlet of the equipment as practical at the ___________. ✔✔Time of equipment installation
With regard to the indoor use of nonmetallic gas hose connectors, an equipment shutoff valve shall be installed where the connector is ________. ✔✔Attached to the building piping
Steam and hot water boilers, shall be provided with approved ___________ for shutting down the burner to prevent boiler steam pressure exceeding the maximum allowable working pressure or temperature. ✔✔Automatic limiting devices
A vertical distance of NOT less than ______ shall be provided between the top of all food service hot plates and griddles and combustible material. ✔✔48 inches
Listed floor-mounted food service equipment, such as restaraunts, shall be installed at least _________ from combustible material. ✔✔6 inches
Unlisted suspended-type unit heaters shall be installed with clearances to combustible material NOT less than ______. ✔✔18 inches
Provision for ___________ shall be provided for Type 2 clothes dryers, with a minimum free area of 1 square inch/1000 Btu/hr total input rating of the dryer(s) installed. ✔✔Make-up air
The air that enters a draft hood or draft regulator and mixes with the flue gases is called what? ✔✔Dilution air
Where vents, including those for direct-vent appliances or combustion air intake pipes, penetrate outside walls of buildings, the annular spaces around such penetrations shall be ___________ using approved materials to prevent entry of combustion products into the building. ✔✔Permanently sealed
The air that passes through the combustion chamber in excess of that which is required for complete combustion is called what? ✔✔Excess air
__________ shall have a vertical clearance above the cooking top of NOT less than 30 inches to combustible material or metal cabinets. ✔✔Household cooking appliances
The pipe or duct which connects a fuel gas burning appliance to vent or chimney is what? ✔✔Vent connector
Piping in systems shall be run as __________ as is practical from one point to another. ✔✔Directly
NFPA 54/ANSI Z223.1, National Fuel Gas Code, shall be administered and enforced by _____________ designated by the governing authority. ✔✔The authority having jurisdiction
A system being leak tested should show no increase or decrease in the pressure reading for a period of ______________. ✔✔3 minutes
____________ are appliances that are constructed and installed so that all air for combustion is derived directly from the outside atmosphere and all flue gases are discharged outdoors. ✔✔Direct vent appliances
A vent connector shall NOT be connected to a chimney flue serving a fireplace unless the fireplace flue opening is _____________. ✔✔Permanently sealed
Fuel containers shall be ____________ to prevent jarring loose. ✔✔Mounted
ASME containers and cylinders on vehicles utilized for other than engine fuel systems, shall NOT be ____________ inside the vehicle. ✔✔Stored, installed, or transported
Containers used in a public building undergoing minor renovations shall NOT have more than a maximum propane capacity of ______________ and the number of cylinders shall NOT exceed the number of workers assigned to use the LP gas. ✔✔20 lbs
Field welding on containers shall be limited to attachments on ____________ installed by the manufacturer. ✔✔Non-pressure parts
During the hours of the day the public is permitted in a building undergoing minor renovations, the cylinders shall NOT be ____________. ✔✔Left unattended
Portable heaters shall be equipped with an approved ________ to shut off the flow of gas to the main burner in the event of flame extinguishment or combustion failure. ✔✔Automatic shutoff
A ___________ for medium-heat equipment shall extend at least 10 ft higher than any portion of any building with 25 ft. ✔✔Chimney
____________ is gas piping that, when in place in a finished building, would require removal of permanent construction to gain access to the piping. ✔✔Concealed piping
Fittings installed in concealed locations shall be limited to the following types: ✔✔1. Threaded elbows, teees, and couplings
- Brazed fittings
- Welded fittings
An unlisted pool heater shall be installed with a minimum clearance of __________ on all sides and the rear. ✔✔12 inches
A water heater installation shall be provided with _______________. ✔✔Over temperature protection and overpressure protection
If leakage is indicated during a test, the gas supply shall be _________ until the necessary repairs have been made. ✔✔Shut off
Commercial-industrial-type __________ shall be vented in accordance with NFPA 82, Standard on Incinerators and Waste and Linen Handling Systems and Equipment. ✔✔Incinerators
Cooking appliances should be installed so that the cooking top or oven racks are _________. ✔✔Level
A draft hood shall be located so its relief opening is NOT less than ___________ from any surface except that of the appliance it serves and the venting system to which the draft hood is connected. ✔✔6 inches
A vent connector shall be installed without any dips or sags and shall slope upward at least ____________. ✔✔1/4 inch per foot
Listed equipment with a draft hood or equipment for use with Type B gas vents, installed in a single-wall metal pipe shall be a minimum of ___________ from combustible material. ✔✔ 6 inches
Single-wall metal pipe shall not originate in any ____________ and shall NOT pass through them. ✔✔Concealed space or unoccupied attic
If a safety shutoff device does NOT function properly, it shall be __________ or replaced with new equipment. ✔✔Serviced
Brazing filler material for tubing joints shall have a melting point exceeding _______________. ✔✔1000 degrees Fahrenheit
What is a fixed liquid level gauge that indicates the liquid level at which the container is filled to its maximum permitted filling limit? ✔✔a fixed maximum liquid level gauge
ASME code refers to the ________________ of the American Society of Mechanical Engineers. ✔✔Boiler and pressure vessel codes
The lower flammability limit of propane vapor is ____________. ✔✔2.
In those cases where the authority having jurisdiction determines that the existing situation presents __________, the authority having jurisdiction shall be permitted to apply retroactively any portions of this code that are deemed appropriate. ✔✔a distinct hazard to life or adjacent property
The sniff test to detect odorization shall be done when ____________. ✔✔1. LP-gas is delivered to the bulk plant
- It is shipped directly to the customer, bypassing the bulk plant
When a container is to be abandoned underground, as much of the remaining gas vapor as possible shall be removed through a ______________. ✔✔Vapor connection
Individual LP-gas containers used on non-passenger carrying vehicles shall NOT exceed ____________. ✔✔300 gallons water capacity
In an installation of a tank heater of 500 gallons water capacity or less, the minimum distance required from external exposures is ____________. ✔✔10 feet
Equipment shall be fabricated of materials that are ___________ with LP-gas under service conditions. ✔✔Compatible
Containers shall be designed, fabricated, tested, and marked in accordance with which of the following: ✔✔1. ASME
2.API-ASME
- DOT
Cylinders used with commercial food service appliances used inside restaurants shall be permitted provided there are no more than _________ 10 oz. non-refillable containers, each having a maximum capacity of 1.08 lb. ✔✔Two
Where containers fabricated to earlier editions of regulations, rules, or codes listed in 5.2.1.1 and of the Interstate Commerce Commission (ICC) Rules for Construction of Unfired Pressure Vessels, prior to April 1, 1967, shall be __________ to be used if they have been properly maintained and requalified. ✔✔Permitted
The initial boiling point of commercial propane at 14.7 psia is __________. ✔✔-44 degrees Fahrenheit
All _________ equipment and components that are buried or mounded shall be coated or protected and maintained to minimize corrosion. ✔✔Metallic
Protection of appurtenances of portable containers, skid tanks, and tanks for use as cargo tanks of more than __________ shall be protected from physical damage by location on the vehicle or protective housings. ✔✔1000 lbs water capacity
Effective January 1, 1993, a warning label shall be applied to all portable refillable LP-gas cylinders of _________ or less NOT filled on site. ✔✔100 lbs
All LP gases shall be odorized prior to delivery with a warning agent down to a concentration in air of NOT over __________. ✔✔1/5 the lower limit of flammability
__________ shall NOT be used for metallic pip and tubing. ✔✔Cast iron pipe fittings
ASME Connections for pressure relief valves shall be located and installed in such a way as to have ____________. ✔✔Direct communication with the vapor space
Gas fired heating appliances shall be equipped with automatic devices to __________ the flow of gas to the main burner and the pilot in the event the pilot flame is extinguished. ✔✔Shutoff
ASME Containers shall be equipped with at least _________ pressure relief device(s). ✔✔ 1
All cylinders used in industrial truck service shall have the container pressure relief valve replaced with a new valve within __________ of the date of manufacture. ✔✔12 years
