Chapter 12

The piping and equipment between the street gas main and the gas piping system inlet, which is sinstalled by and is under the control and maintenance of the serving gas supplier, is the

Gas piping

Service piping

Gas fitting

Yard service

Listed metal appliance connector for dryers shall be

Concealed

Brass only

A max of 6 ft.

A max of 3 ft.

The maximum distance between a gas outlet for a fireplace and an approved operating valve is

3 ft.

4 ft.

6 ft.

15 ft.

Bushings in gas piping shall not be used in

Exterior locations

Exposed locations

Open carports

Concealed locations

Leaks in gas piping shall be located by applying:

Water into the piping

Acid to the piping

Soapy water to the exteriror of the piping

A flame

Appliance connectors shall at no time have a diameter less than

3/4 in

3/8 in

The appliance inlet connection

Pipe diameter squared

All exposed gas piping shall be kept

At least 6 in. Above grade

In a readily accessible location

In weather protected areas

In recessed or channels

Non-metallic underground gas piping shall be buried

Below the freeze line

At least twice the pipe diameter

At least 12 in. deep

At least 18 in. deep

The fitting that shall be used in lieu of the union that is not used at the appliance or outside at the meter is called a

Right and left nipple and coupling

Right and left nipple and tee

Right and left nipple and ell

Universal joint

A number 10 copper tracer wire or other approved material shall be installed with underground

Metallic gas piping

Non-metallic gas piping

Ferrous gas piping

Wrapped gas piping

When a metallic riser connects underground to poly piping, the underground horizontal metallic portion of the riser shall extend at least ___ inches before connecting to the poly pipe.

No part of a gas appliance connector shall be concealed within or extended through any

Wall or floor

Partition

Appliance housing

All of the above

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

Pipe has a protected covering

Pipe is installed in a gastight conduit

Pipe is PVC

Pipe is a continuous piece of tubing without joints or fittings

Using the table below, what is the Btu/h rating for a 40 allon water heater?

10,000

25,000

40,000

50,000

Using the table below, what is the total Btu/h rating for a domestic clothes dryer, a domestic recessed top burner section and a residential fireplace log lighter?

75,000

90,000

100,000

200,000

Chapter 12

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