Free Red Seal Steamfitter/Pipefitter Examination Practice Questions

Sample Practice Questions

Try these 10 sample questions from the Red Seal Steamfitter/Pipefitter Examination practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1Before opening a process pipeline for maintenance, a pipefitter inserts a solid plate to close the line. What is this isolation method called?

   1. A.Line capping
   2. B.Double block and bleed
   3. C.Line blankingCorrect answer: C
   4. D.Valve lockout

   Explanation: CCOHS describes line blanking as the "Presence of solid plate used to absolutely close a line". The solid plate in the scenario is therefore line blanking; the other names refer to different methods of controlling flow or isolation.

   Reference: CCOHS Lockout/Tag out — What are the basic steps of locking and tagging out a system? — 7. Verify Isolation

2. 2A pipefitter is preparing a rectangular support plate measuring 1.2 m by 0.8 m. Before any holes are cut, what is the area of one face?

   1. A.0.48 m²
   2. B.0.96 m²Correct answer: B
   3. C.1.92 m²
   4. D.2.00 m²

   Explanation: The Red Seal formula sheet gives the rectangular area formula as "length × width". Therefore 1.2 m × 0.8 m = 0.96 m². Halving that area gives 0.48 m², counting two faces gives 1.92 m², and adding the dimensions instead of multiplying gives the numerical value 2.00.

   Reference: Steamfitter/Pipefitter - Exam Information — Math Formulas, Area formulas, Rectangle

3. 3A chain-sling hook normally has a 30.0 mm throat opening at its narrowest point. CCOHS advises removing a hook if that opening has increased by more than 15%. Considering this criterion alone, what is the greatest measured opening that does not trigger removal?

   1. A.33.0 mm
   2. B.34.5 mmCorrect answer: B
   3. C.36.0 mm
   4. D.37.5 mm

   Explanation: CCOHS says hooks should be removed if opened "more than 15% of the normal throat opening". Fifteen percent of 30.0 mm is 4.5 mm, so the criterion is exceeded above 34.5 mm. The other values result from using 10%, 20% or 25% instead of 15%; a hook can also require removal for other defects.

   Reference: CCOHS: Materials Handling - Chain Slings — How should chain slings be checked during inspection?

4. 4A fitter lays out a 30 m low-pressure steam main that falls in the direction of flow. Using the guide's minimum 1:100 fall, what is the minimum drop over this run?

   1. A.0.03 m
   2. B.0.30 mCorrect answer: B
   3. C.0.75 m
   4. D.3.00 m

   Explanation: The steam-main guide recommends "a fall of not less than 1:100" in the flow direction where practicable. For 30 m, the minimum drop is 30 ÷ 100 = 0.30 m. The other choices shift a decimal place or use the separate 1:40 slope recommended for a rising main.

   Reference: Spirax Sarco: Steam Mains and Drainage — Piping layout

5. 5In a closed hydronic circuit, an expansion tank connects to the piping upstream of, but at a distinct location from, the circulator inlet. Immediately as the circulator starts, at which point does the tank establish the reference pressure that remains unchanged?

   1. A.At the expansion-tank connectionCorrect answer: A
   2. B.At the circulator discharge port
   3. C.At the circulator inlet port
   4. D.At the terminal-unit return port

   Explanation: The hydronic guide says "the pressure at the point where the expansion tank is connected to the circuit remains the same" when the circulator turns on. The other points are distinct locations where operating pressure can change.

   Reference: Caleffi Idronics: Basic Concepts and Detailing — Expansion Tank Placement

6. 6A ground-source heat pump is operating in cooling mode when the outside air is warmer than the ground. In which direction does its ground loop transfer heat?

   1. A.From the building to the groundCorrect answer: A
   2. B.From the ground to the building
   3. C.From the ground to the outdoor air
   4. D.From the outdoor air to the ground

   Explanation: DOE states that when ambient temperatures are warmer than the ground, the heat pump "removes heat from the building and deposits it underground". The ground loop rejects building heat to the ground.

   Reference: U.S. Department of Energy, Geothermal Heat Pumps — What is a geothermal heat pump?

7. 7Before commissioning a pipeline, a fitter prepares a pigging system to clean its interior. Which component provides the barrel from which the cleaning pig is removed after its run?

   1. A.Pig receiverCorrect answer: A
   2. B.Pig launcher
   3. C.Pig signaler
   4. D.Pig bypass

   Explanation: The PHMSA glossary distinguishes barrels "where pigs are inserted" from barrels "where pigs are retrieved and taken out of the pipeline"; the latter are receivers. A launcher starts a run, while the signaler and bypass serve other functions.

   Reference: PHMSA, Pipeline Glossary — Barrel

8. 8A pipefitter checks a respirator's maximum use concentration using the CCOHS formula. Its assigned protection factor is 10 and the contaminant's occupational exposure limit is 2 ppm. What concentration does the formula yield?

   1. A.0.2 ppm
   2. B.5 ppm
   3. C.12 ppm
   4. D.20 ppmCorrect answer: D

   Explanation: CCOHS states: "Maximum use concentration = APF of a respirator x occupational exposure limit". Substituting gives 10 × 2 ppm = 20 ppm. The other results come from dividing 2 by 10, dividing 10 by 2, or adding 10 and 2, respectively. The calculation alone does not establish that a respirator is suitable for a particular atmosphere.

   Reference: CCOHS Respirators - Respirator Selection — How do you select the right respirator?

9. 9A pipefitter lays out a parallel offset using two 45° elbows. The perpendicular centreline offset is 10.00 inches. Using the Red Seal 45° constant, what is the centre-to-centre travel between the elbows?

   1. A.7.07 inches
   2. B.10.00 inches
   3. C.14.14 inchesCorrect answer: C
   4. D.20.00 inches

   Explanation: The Red Seal formula describes travel as "offset distance × 45° offset constant". The Steamfitter/Pipefitter formula sheet gives the "Travel offset of a 45° elbow" constant as "1.414". Thus 10.00 × 1.414 = 14.14 inches. Dividing by 1.414 gives 7.07 inches; using the offset without conversion gives 10.00 inches; doubling it gives 20.00 inches.

   Reference: Red Seal Gasfitter - Class A Exam Information — Mathematical Formulas, Travel

10. 10A fitter plans a choker hitch using a sling with a rated capacity of 2.0 tonnes. Under CCOHS guidance, what is the greatest load implied by the general 75% limit before any further choke-angle reduction is considered?

    1. A.0.5 tonnes
    2. B.1.0 tonne
    3. C.1.5 tonnesCorrect answer: C
    4. D.2.0 tonnes

    Explanation: CCOHS advises using choker hitches at "75% or less of the rated sling capacity" and notes that capacity depends on choke angle. The general ceiling is 2.0 × 0.75 = 1.5 tonnes; 0.5 and 1.0 use 25% and 50%, while 2.0 uses the unreduced rating. The actual permissible load may be lower for the particular angle.

    Reference: CCOHS: Materials Handling - Rigging or Sling Hitches — How should you use choker hitches?