2018 IFGC CH 4A

·         01.For other than steel piping, exposed gas piping must be identified by a yellow label marked “Gas” in black letters and the markings spaced at intervals not exceeding _____________ feet.

• 1. a.5
• 2. b.10
• 3. c.15
• 4. d.20

·         02.Where there are multiple meters, the ___________ must mark the piping system supplied by each meter with an approved permanent identification.

• 1. a.owner
• 2. b.gas supplier
• 3. c.installer
• 4. d.code official

·         03.The volume of gas to be provided must be determined directly from the ______________of the appliance served.

• 1. a.input rating
• 2. b.output rating
• 3. c.hourly load
• 4. d.operating pressure

·         04.Gas piping is permitted to be sized in accordance with the sizing tables of the ___________.

• 1. a.gas supplier
• 2. b.piping system manufacturer
• 3. c.approved testing agency
• 4. d.piping supplier

·         05.Using the longest length method for sizing gas piping, each section of piping is measured from _______________.

• 1. a.the first branch to the appliance
• 2. b.the point of delivery to the most remote outlet
• 3. c.the point of delivery to the first branch
• 4. d.the pressure regulator to the most remote outlet

·         06.A gas piping system located inside a(n) _______________ building is limited to a maximum design operating pressure of 5 pounds per square inch gage (psig).

• 1. a.institutional
• 2. b.industrial
• 3. c.warehouse
• 4. d.research

·         07.Used pipe, fittings, valves and other materials must not be used in a gas piping system except where they are free of _______________.

• 1. a.paint
• 2. b.corrosion
• 3. c.foreign material
• 4. d.abrasion

·         08.Copper and copper alloy gas piping is permitted to be installed when the gas contains no more than an average of _______________ grains of hydrogen sulfide per 100 standard cubic feet of gas.

• 1. a.0.9
• 2. b.0.6
• 3. c.0.3
• 4. d.0.1

·         09.Field drilled and tapped pipe fittings are permitted under limited conditions when the work is performed by ___________________.

• 1. a.a licensed pipefitter
• 2. b.the contractor holding the permit
• 3. c.an approved third-party agency
• 4. d.the gas supplier

·         10.For steel gas piping, threaded fittings larger than _______________ inches are not permitted.

• 1. a.2
• 2. b.2½
• 3. c.3
• 4. d.4