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42 Cards in this Set

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1. "Fuel gas" includes ____.



(A) natural gas


(B) liquefied petroleum gas


(C) a combination of the above (D) all of the above apply

(D) all of the above apply

208.0

"Gas piping" installed on any premises or in any building or structure includes ____.



(A) any installation of pipe, valves, or fittings that is used to convey fuel gas


(B) any portion of the service piping


(C) any approved piping connection 6 inches in length or less between an existing gas outlet and a gas appliance in the same room


(D) the meter and pressure regulator

(A) any installation of pipe, valves, or fittings that is used to convey fuel gas

1301.1

Piping shall not be supported by ____



(A) pipe hooks


(B) metal pipe straps


(C) brackets


(D) other piping

(D) other piping

1311.2.5

Upon completion of the installation, alteration, or repair of any gas piping, and prior to the use thereof, _____.

(A) the piping shall be painted to prevent corrosion


(B) the Authority Having Jurisdiction shall be notified that such piping is ready for inspection


(C) appliances shall be connected and fired to be certain


(D) the gas shall be turned on to detect the smell of gas if pipes are leaking

(B) the Authority Having Jurisdiction shall be notified that such piping is ready for inspection

1303.1

All excavations required for the installation of underground gas piping shall be ____.



(A) backfilled as soon as possible to avoid accidents


(B) only backfilled to maintain access for vehicles on the job site


(C) kept totally open until such time as the piping has been inspected and approved


(D) approved by gas supplier

(C) kept totally open until such time as the piping has been inspected and approved

1303.2

A rough piping inspection does not include the following:



(A) size of gas pipe


(B) proper material


(C) pressure test


(D) installation meets the requirements of the code

(C) pressure test

1303.3.1

"Rough piping inspection" of fuel-gas piping shall be made



(A) after all gas piping authorized by the permit has been installed


(B) whenever the contractor gets around to it


(C) after all appliances are connected to the gas piping system


(D) rough inspection is not needed

(A) after all gas piping authorized by the permit has been installed

1303.3.1

Prior to acceptance and initial operation, all piping installations shall be pressure tested using ____.



(A) air, carbon dioxide, or nitrogen


(B) freon


(C) oxygen


(D) water

(A) air, carbon dioxide, or nitrogen

1316.7

The Authority Having Jurisdiction shall inspect the test of fuel gas piping installations and the pressure required is _____.



(A) a minimum of 15 psi for 10 minutes


(B) a minimum of 10 psi for 15 minutes


(C) 1-1/2 the proposed maximum working pressure (D) three times the proposed working pressure

(B) a minimum of 10 psi for 15 minutes

1316.9

If upon final inspection the installation of the fuel gas piping is found to comply with the provision of the Uniform Mechanical Code, _____.



(A) no certificate of inspection is issued because there is no rejection to be noted


(B) a certificate of inspection shall be issued to prove the installation is approved by the Authority Having Jurisdiction (C) a certificate of inspection shall be permitted to be issued by the Authority Having Jurisdiction


(D) the permit holder must request a certificate of inspection

(C) a certificate of inspection shall be permitted to be issued by the Authority Having Jurisdiction

1304.1

The ____ may lawfully turn on or reconnect the fuel supply to a premise when the gas service, at the time, is not being rendered.



(A) permit holder


(B) Authority Having Jurisdiction


(C) contractor


(D) gas supplier

(D) gas supplier

1305.1

When it is found that fuel gas piping or an appliance does not conform with the requirements of the Mechanical Code, or such fuel gas piping or appliance may be defective, or in such condition as to endanger life or property, the fuel gas piping or appliance or both shall be disconnected by authorization of the _____.



(A) Authority Having Jurisdiction


(B) contractor


(C) occupant of the premises


(D) fire department inspectors

(A) Authority Having Jurisdiction

1306.1

It shall be unlawful to remove or disconnect any gas piping without _____.



(A) obtaining a permit from the Authority Having Jurisdiction (B) capping or plugging the gas pipe outlet with a screw joint fitting


(C) installing a quick-connect (D) disconnecting the gas meter

(B) capping or plugging the gas pipe outlet with a screw joint fitting

1306.3

The location of the point of delivery shall be _____.



(A) accessible and outside of each building supplied with fuel gas


(B) near driveways where the meter is visible and accessible (C) as close as possible to the street side of the structure


(D) acceptable to the gas supplier

(D) acceptable to the gas supplier

1308.2

Access to enclosed gas meters shall be through an opening or door not less than


(A) 24" x 24"


(B) 22" x 30"


(C) 30" x 30"


(D) meters shall be readily accessible

(D) meters shall be readily accessible

1308.6.1

Pipe used for the installation, extension, alteration, or repair of any gas piping shall be standard weight ____.



(A) wrought iron or steel


(B) PVC


(C) glass


(D) cast iron

(A) wrought iron or steel

1308.5.2.2

All joints in metallic fuel-gas piping shall be ____.



(A) flanged, screwed, or welded (B) soldered


(C) crimped


(D) cast iron

(A) flanged, screwed, or welded

1308.5.10.1

Where the input rating for a furnace and a 30 gallon water heater in a residence is not known, _____ Btu may be used for estimating purposes.



(A) 100,000


(B) 120,000


(C) 125,000


(D) 135,000

(D) 135,000

Table 1308.4.1

The minimum cover of earth for all horizontal metallic piping for fuel gas shall be __ inches.



(A) 10


(B) 15


(C) 18


(D) 24

(C) 18

1311.1.1

Where external damage to the buried pipe is not likely to result, the minimum cover shall be __ inches.



(A) 12


(B) 15


(C) 18


(D) 24

(A) 12
1311.1.1
Quick-disconnect devices located indoors shall have ____.



(A) a union located upstream (B) a shutoff valve located downstream of the quick-connect


(C) a shutoff valve located upstream of the quick-connect (D) no union or shutoff required

(C) a shutoff valve located upstream of the quick-connect

1312.5

In a common gas piping system serving a number of individual buildings, _____.



(A) a meter shall be installed at each building


(B) a shutoff valve for each set of buildings shall be installed (C) shutoff valves shall be installed at each building


(D) a readily accessible separate shutoff valve shall be located outside of each building

(C) shutoff valves shall be installed at each building

1311.10.1.1

An accessible appliance shutoff valve shall be installed in the fuel-gas supply piping _____.



(A) if the gas piping material is not approved


(B) downstream of the union in connection with the appliance (C) within 4 feet of the appliance


(D) within 6 feet of the appliance

(D) within 6 feet of the appliance

1312.4

Underground nonmetallic gas piping shall be installed with _____.



(A) an electrically continuous corrosion-resistant tracer wire (min. #14)


(B) other approved material tracer wire terminated above ground at each end


(C) #18 copper wire on one end only


(D) an electrically continuous corrosion-resistant tracer wire (min. #18)

(A) an electrically continuous corrosion-resistant tracer wire (min. #14)

1311.1.7.2

Plastic piping joints and fittings for use with undiluted liquefied petroleum gas piping systems shall be in accordance with ____.



(A) UMC


(B) UPC


(C) NFPA 54


(D) NFPA 58

(D) NFPA 58

1308.5.11

Copper and brass pipe shall not be used if the gas contains more than an average of ___ grains of hydrogen sulfide per 100 scf of gas.



(A) .9


(B) .7


(C) .5


(D) .3

(D) .3

1308.5.2.3

Support spacing for 1/2 inch (o.d.) smooth wall tubing shall be __ feet.



(A) 3


(B) 5


(C) 4


(D) 10

(C) 4

Table 1311.2.5.1

Leaks in gas piping shall be located _____.



(A) with matches


(B) with a "presto-lite" flame


(C) by applying a noncorrosive leak detection fluid


(D) by increasing the air pressure during the test until the leaks are heard as a whistle

(C) by applying a noncorrosive leak detection fluid

1316.10.1

Defects in gas piping or fittings shall be ____ and retested.



(A) repaired with used water pipe fittings


(B) replaced


(C) repaired by a noncertified welder


(D) ignored as the operating pressure is much less than the air test pressure

(B) replaced

1316.10.2

All natural gas regulations and tables are based on the use of gas having a pressure at the outlet of the meter of _____.



(A) 2 to 4 inches water column


(B) 4 to 6 inches water column


(C) 6 to 8 inches water column (D) 1 to 5 pounds per square inch

(C) 6 to 8 inches water column

1318.1

The hourly volume of gas required at each piping outlet shall be taken as not less than _____.



(A) the average use of the appliance


(B) the maximum hourly rating specified by the manufacturer (C) the maximum hourly rate specified in the Building Code (D) specified by the gas supplier

(B) the maximum hourly rating specified by the manufacture

1318.2

To obtain the cubic feet per hour of fuel gas required for any heating valve appliance,



(A) divide the Btu input of the appliance by the average Btu heating value per cubic foot of gas


(B) divide the Btu input of the appliance by 1,000


(C) contact the Authority Having Jurisdiction or local inspector


(D) obtain the manufacturer's specifications

(A) divide the Btu input of the appliance by the average Btu heating value per cubic foot of gas

1318.3

The minimum size of the supply piping outlet for any gas appliance shall not be less than _____.



(A) the diameter of the gas piping connection of the appliance


(B) 1/2 inch diameter


(C) 3/4 inch diameter


(D) as determined by the gas piping tables contained in the Uniform Mechanical Code

(B) 1/2 inch diameter

1318.4

Gas meters in mobile home parks shall be located at least __ feet from sources of ignition.



(A) 2


(B) 3


(C) 4


(D) 5

(B) 3

1324.2

Gas piping in vertical chases in excess of 5 psi shall be ____.



(A) screwed fittings


(B) welded


(C) brazed


(D) not allowed by code

(B) welded

1311.5.(1)

Threaded fittings for gas piping larger than __ inches shall not be used unless approved by the Authority Having Jurisdiction.



(A) 2


(B) 4


(C) 6


(D) 3

(B) 4

1308.5.10.4

Copper tubing 1 inch or larger running vertically shall be fastened every __



(A) 12 feet


(B) 10 feet


(C) 8 feet


(D) floor

(D) floor
1311.2.5.1
Aluminum alloy appliance connectors may be used only in _____.



(A) wet locations


(B) exterior locations


(C) interior locations


(D) masonry walls

(C) interior locations

1311.2.3

Gas piping may be installed under a building or structure if the _____.



(A) enclosed in an approved conduit


(B) pipe is installed in a gastight conduit


(C) pipe is PVC


(D) pipe is continuous copper tubing

(A) enclosed in an approved conduit

1311.1.6

Sediment traps are required on all the following equipment except _____.



(A) furnaces


(B) outdoor gas grills


(C) water heaters


(D) unit heaters

(B) outdoor gas grills

1312.7

Gas piping at multiple meter installations shall be marked with _____.



(A) a magic marker


(B) a permanent metal tag


(C) crayon


(D) not required to be marked

(B) a permanent metal tag

1308.6.4

All drips shall be installed only in such locations that they will be _____.



(A) readily accessible


(B) 6 feet from the appliance


(C) 8 feet from the appliance (D) 10 feet from the appliance

(A) readily accessible

1311.7.2