Fuel Gas Piping Practice Questions
Natural gas and LP gas, approved and prohibited materials, shutoff valves, sediment traps, testing and leak checks, CSST bonding, connectors and sizing.
100 questions in 2 hours, scored against the 70% pass mark, with a score for fuel gas so you know where you stand.
Free fuel gas drillPolyethylene (PE) gas pipe is allowed:
Fuel Gas Piping on the journeyman plumber exam
TSBPE’s review course has a fuel gas chapter: the types of fuel gas, approved and prohibited piping materials and testing. In Texas, LP-gas piping also falls under Railroad Commission rules. ICC’s G25 has no gas content area (G28 adds it), so our ICC mock leaves fuel gas out.
- On our mocks
- Texas: 8 of 100 on our Texas mock · ICC G25: not on our ICC G25 mock
- Our drill
- 10 questions from 24 fuel gas questions, untimed, an explanation and code reference after every answer; one free attempt, unlimited with a pass
What fuel gas questions test
- Natural gas rises and LP gas settles; odorant; heating value and demand in cubic feet per hour
- Materials: steel, CSST and copper where allowed, PE outdoors underground only, and no cast iron
- Appliance shutoff valves within 6 feet in the same room, sediment traps, connectors that stay in the room
- Testing with air or inert gas (never oxygen), leak checks with bubble solution, purging safely
- CSST bonding with 6 AWG copper, prohibited locations, unions not concealed, support spacing
Sit the full exam under the real clock
100 questions in 2 hours, scored against the 70% pass mark, with a score for fuel gas so you know where you stand.
Free fuel gas drillHow to study it
- Know which gas questions follow the IFGC and which follow the UPC if your local code differs; the test pressures differ.
- Learn the shutoff valve and sediment trap rules; they show up on water heater questions too.
Common questions
Is fuel gas on the Texas journeyman exam?
Yes. TSBPE’s journeyman review course includes a fuel gas chapter (types of gas, materials and testing) and notes that LP-gas piping needs a separate Railroad Commission license.
What gas can you use to test gas piping?
Air, nitrogen, carbon dioxide or another inert gas. Oxygen is never used.
100 questions in 2 hours, scored against the 70% pass mark, with a score for fuel gas so you know where you stand.
Free fuel gas drillThe other sections
- Code Definitions and Plan Reading
- General Regulations, Testing and Plumbing Math
- Pipe Materials and Joints
- Plumbing Fixtures
- Water Heaters
- Water Supply and Distribution
- Sanitary Drainage
- Vents
- Traps, Interceptors and Separators
- Storm Drainage
- Texas Plumbing License Law and Board Rules
- Texas practice exam (100 questions, 2 hours)
- ICC G25 practice exam (70 questions, 4 hours)
- Free Texas mixed drill
Sources
- Pearson VUE: Texas State Board of Plumbing Examiners (retake waits, practical, five attempts)
- TSBPE Candidate Handbook, August 2025 (exam table, fees, 70% passing score, test-center rules)
- TSBPE Journeyman Plumber Examination Review Course, rev 09/2025 (format, codes, chapters, sample questions)
- TSBPE Administrative Rules, March 2026 (22 TAC §§363.5, 363.22, 365.1, 367.2)
- TSBPE proposed amendment to §367.2 (2021 IPC and UPC), Texas Register, August 14, 2026
- TSBPE Strategic Plan 2025-2029 (examination statistics, p. 14)
- ICC National Contractor/Trades Examination Information Bulletin, published June 30, 2026 (G25 Journeyman Plumber)
- ICC Support: What is a passing score?
Original practice questions written to the TSBPE Journeyman Plumber Examination Review Course, ICC’s G25 content outline and the 2018 International Plumbing Code and Uniform Plumbing Code; they are not exam questions and quote no code text. Independent practice, not affiliated with or endorsed by the Texas State Board of Plumbing Examiners, the International Code Council, IAPMO or Pearson VUE.