Plumbing QC Inspector is a professional who ensures that plumbing systems and installations are in compliance with the required codes, standards, and specifications. They are responsible for conducting quality control inspections, reviewing plans and drawings, verifying material specifications, and ensuring that all plumbing work is performed according to the project specifications.
Interview questions for Plumbing QC Inspectors may include topics such as plumbing codes and standards, material specifications, installation procedures, and quality control procedures. These questions are designed to assess the candidate’s knowledge and understanding of the plumbing industry and their ability to perform the job duties effectively.
Plumbing QC Questions & Answers
CBT Exam Questions for Aramco may cover a wide range of topics related to plumbing, including plumbing codes and standards, material properties and specifications, plumbing installation procedures, safety procedures, and quality control procedures. These questions are designed to test the candidate’s knowledge and understanding of the plumbing industry and their ability to apply this knowledge in real-world situations.
Plumbing QC Inspector Aramco CBT Questions
Q.1 Which of the following options describes the correct set pressure of a pressure relief valve that is greater than the working pressure?
a) 0.005 b) 0.006 c) 0.004 d) 0.008
Q.2 Which of the following is the equivalent of 1.0 TR in BTUs?
a) 12000 BTUs b) 14000 BTUs c) 10000 BTUs d) 16000 BTUs
Q.3 Which type of valve is typically used for the main supply line?
a) Isolation Valve b) Ball valve c) Flow valve d) None of the above
Q.4 After installation of a purge, 7 kPa (1.0 psig) of dry nitrogen should be used while soldering, brazing or welding connections.
a) True b) False
Q.5 What is the elevation difference between the primary and secondary roof drain?
a) 50 mm b) 25 mm c) 75 mm d) None of the above.
Q.6 PCV & CPVC primer is used to soften the edge of the pipe prior to applying solvent cement glue.
a) Solvent cement glue b) Sealant c) Strip glue d) Non of the above
Q.7 What is the recommended expansion space around a fire damper?
a) 1/8” per sq. foot or 10mm per LM b) 1/4” per sq. foot or 5mm per LM c) 1/2” per sq. foot or 10mm per LM d) None of the above
Q.8 What is the minimum spacing allowed for sprinklers?
a) 6ft (1.8m) b) 5ft (1.5m) c) 4ft (1.2m) d) None of the above
Q.9 What is the minimum distance between the impeller tips and the underside of the floating roof in floating roof tanks?
a) 2-1/2 times the impeller diameter b) 3-1/2 times the impeller diameter c) 1-1/2 times the impeller diameter d) None of the above
Q.10 What is the smallest diameter of a sewer line?
a) 200 mm b) 300 mm c) 100 mm d) 150 mm
Q.11 What is the duration of PRV calibration?
a) 2 weeks b) 1 week c) 5 days d) None of the above
Q.12 Which type of system uses 2-way control valves?
a) Constant flow systems b) Variable flow systems c) Systems with suction lines d) None of the above.
Q.13 What is the color code for Type K copper pipes?
a) Green b) Red c) Blue d) Yellow
Q.14 The vent should be taken from the top of the centerline of the drain pipe.
a) True b) False
Q.15 What is the recommended temperature range to be maintained in battery rooms?
a) 22.5°C +/- b) 12.5°C +/- c) 18.5°C +/- d) 10.5°C +/-
Q.16 Which ASTM type and material is commonly used for shaft sleeves?
a) ASTM 276 TYPE 316L b) ASTM A322 TYPE 4140 c) ASTM A743 TYPE CF3M d) None of the above.
Q.17 What is the recommended connection type for a metal duct passing through a building joint?
a) Flexible joint connector b) Breakaway connection c) Tee and caulking connection d) None of the above.
Q.18 Manholes shall not overlap tank welded seams. If this cannot be avoided, the angle of the manhole can be increased. Which of the following angles can be increased?
a) 22-1/2 deg b) 21 deg c) 12-1/4 deg d) None of the above.
Q.19 What is the distance limit within which copper fins must be used on copper tubes for all condenser coils near the sea?
a) ½ km b) 1 km c) 2 km d) None of the above.
Q.20 What is the typical temperature rise for chilled water systems?
a) 5.5°C (8°F) b) 6.5°C (8°F) c) 5.9°C (12°F) d) None of the above.
Q.21 What is the minimum dust spot efficiency required for a final filter?
a) 0.65 b) 0.85 c) 0.45 d) 0.75
Q.22 In a plumbing installation, should section service shut off valves be provided for each grouping of three or more fixtures?
a) True b) False
Q.23 At which change in direction is a thrust block required?
a) 90 degrees b) 180 degrees c) 45 degrees d) 100 degrees
Q-24. Which fixture does not require a P-Trap?
a) Western Water Closet b) Flexible joint connector c) Direct Expansion System d) None of the above
Q.25 What is the maximum distance interval for supporting 1″ CPVC pipe or smaller?
a) 3 ft b) 10 ft c) 4 ft d) 2 ft
Q.26 What is the height requirement for a manhole vent above the ground level?
a) 3.0 meters b) 0.90 meters c) 2.0 meters d) 1.5 meters
Q.27 What is the requirement for shut off valves in relation to the number of fixtures in a plumbing installation?
a) Shut off valves are required for 3 or more fixtures. b) Shut off valves are required for 2 fixtures. c) Shut off valves are required for 1 fixture. d) Shut off valves are not required for any number of fixtures.
Q-28. What device is used to prevent the accumulation of sediments in fire protection piping?
a) Return Bend b) Fusible Link chain type c) Support to prevent sagging d) None of the above.
Q.29 Is it true or false that 2 or 3 lavatories can be connected to a single trap 1-1/2 “?
a) True b) False
Q-30. According to what model is the fire smoke damper protection rating determined?
a) UL 555S b) UL 545S c) UL 565S d) None of the above
Q-31. What is the maximum distance allowed for sprinklers to be located from any single wall?
a) 9 ft (2.7 m) b) 11 ft (3.4 m) c) 14 ft (4.3 m) d) None of the above
Q-32. The maximum air velocity allowed through filters is:
a) 3 m/s b) 2 m/s c) 5 m/s d) None of the above
Q-33. Which standard should flanges comply with?
a) ANSI B16.1 b) ANSI B61.1 c) ANSI B17.1 d) None of the above
Answers:
| 1 | B |
| 2 | C |
| 3 | B |
| 4 | A |
| 5 | C |
| 6 | B |
| 7 | B |
| 8 | A |
| 9 | A |
| 10 | C |
| 11 | A |
| 12 | C |
| 13 | A |
| 14 | A |
| 15 | C |
| 16 | B |
| 17 | C |
| 18 | A |
| 19 | A |
| 20 | B |
| 21 | B |
| 22 | A |
| 23 | B |
| 24 | B |
| 25 | A |
| 26 | B |
| 27 | C |
| 28 | B |
| 29 | A |
| 30 | B |
| 31 | C |
| 32 | A |
| 33 | C |
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