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Plumber's Licensing Exam: Gas Piping Installations
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Plumber's Licensing Exam: Gas Piping Installations
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20 Questions

1. When gas lines are installed under grade or slab, they must be
2. Not enough gas pressure in a system can cause
3. Gas piping installed in the walls is called
4. When do you install a gas pressure regulator on a gas piping system?
5. Who conducts the gas piping inspection?
6. What must be prepared for approval by the Authority Having Jurisdiction before a gas system can be installed?
7. When gas lines are installed under grade or slab, they must be
8. The termination of gas conduits in buildings must be
9. Who needs to verify that overpressure protection is installed?
10. If gas piping is not installed in accordance with the relevant codes, the Authority Having Jurisdiction can
11. At completion of installation of a gas piping system, what must be done?
12. What type of gas piping systems must be purged?
13. What must be prepared for approval by the Authority Having Jurisdiction before a gas system can be installed?
14. Copper or brass cannot be used for gas piping if the gas contains more than how many grains of hydrogen sulfide per 100 standard cubic feet of gas?
15. Copper or brass cannot be used for gas piping if the gas contains more than how many grains of hydrogen sulfide per 100 standard cubic feet of gas?
16. When do you install a gas pressure regulator on a gas piping system?
17. If gas system piping is not installed correctly, what can occur?
18. Who needs to verify that overpressure protection is installed?
19. If gas piping is not installed in accordance with the relevant codes, the Authority Having Jurisdiction can
20. What must pipes, valves, and fittings be free of before they are installed in gas piping systems?

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