What is on the 307A Steamfitter Red Seal exam.

01What is the 307A Steamfitter Red Seal exam?

It is the national certification exam for the trade that the Red Seal Program calls Steamfitter/Pipefitter. Ontario certifies the same trade as Steamfitter, and 307A is Ontario's trade code for it. Alberta and British Columbia call it Steamfitter-Pipefitter. Whichever name you see on a form or a study resource, steamfitter, pipefitter or both, it is the same exam and the same occupational standard.

Steamfitter is a compulsory trade in Ontario. Skilled Trades Ontario says that to work in it you must hold a Registered Training Agreement, a Provisional Certificate of Qualification or a Certificate of Qualification and appear on its Public Register, and that a Certificate of Qualification in this trade must be renewed to stay valid. The apprenticeship is 9,000 hours: 8,280 hours on the job and 720 hours of in-school training over three levels. Passing this exam is how you earn the Certificate of Qualification.

The content is set nationally. According to the Red Seal Exam Preparation Guide, tradespeople from across Canada decide what goes into the trade's Red Seal Occupational Standard (RSOS), write and review every exam question, and decide how many questions each section of the standard gets. The exam is then administered by the provincial and territorial apprenticeship and certification authorities; in Ontario that is Skilled Trades Ontario.

The format is the same as every Red Seal exam: multiple choice, four options (A to D), one correct answer, one mark per question and no penalty for a wrong answer. The Steamfitter/Pipefitter exam has 130 questions and the writing time is four hours, about 1 minute 51 seconds per question. The pass mark is 70 per cent. Seventy per cent of 130 is exactly 91, so you need 91 correct answers and can miss 39.

The standard behind the exam is the 2022 Red Seal Occupational Standard for Steamfitter/Pipefitter. The exam information page and the Self-Assessment Guide both give the 130-question breakdown by the seven major work activities of that standard, and that is the breakdown this guide uses. The preparation guide makes one point worth repeating: the exam is not based on what you do in your job or what your province does. It covers the scope of the trade across Canada at the journeyperson level, so expect questions on medical gas, hydraulics, geothermal loops and complex lifts even if your work never touches them.

02What is on the 307A exam?

The Red Seal Program publishes how many questions come from each major work activity. For Steamfitter/Pipefitter the 130 questions break down like this.

Three blocks dominate. Block B, layout, fabrication and piping installation, is the heaviest at 29 questions (22.3 per cent). Block E, heating, cooling and process piping systems, is next at 27 (20.8 per cent), and Block D, low and high pressure steam and condensate systems, is third at 24 (18.5 per cent). Together they hold 80 of the 130 questions. The lightest block is F, renewable energy systems, at 8 questions (6.1 per cent), with G, commissioning, start-up and turnover, at 11. The shares are worked out from the question counts and rounded to one decimal so that the column adds to 100.0; Block F's exact share is 6.15 per cent.

03What does each block cover?

The task names below are the ones the 2022 Red Seal Occupational Standard lists under each major work activity, with the number of questions the Red Seal Program assigns to each task. Questions are written to the sub-tasks. The single largest task on the exam is the high pressure steam and condensate task (D-12) with 14 questions, followed by laying out and installing piping, tubing, fittings and related components (B-6) with 12. Three tasks have 10 each: performs fabrication (B-5), common rigging, hoisting, lifting and positioning (C-9) and the low pressure steam and condensate task (D-11).

Block A: Common occupational skills (16 questions)

Four tasks and 16 sub-tasks. Performs safety-related functions (4 questions) covers maintaining a safe work environment, using PPE and safety equipment, and following lock-out and tag-out (LOTO) procedures; the standard notes that each steamfitter/pipefitter is responsible for their own lock-out and tag-out equipment. Uses and maintains tools and equipment (6) is the largest task in the block: common tools, access equipment such as ladders and work platforms, welding equipment, soldering and brazing equipment, and oxy-fuel and plasma cutting equipment. The standard says steamfitters/pipefitters perform orbital, oxy-fuel and heat fusion welding and assist certified welders with GTAW, SMAW and GMAW. Organizes job (4) covers planning work, generating drawings, interpreting drawings and specifications, developing piping templates, performing quality control and handling materials and components; the drawings it names include isometrics, spool drawings, weld maps, schematics, as-builts and P&IDs. Uses communication and mentoring techniques has 2.

Block B: Layout, fabrication and piping installation (29 questions)

The heaviest block, with four tasks and 14 sub-tasks. Performs fabrication (10 questions) covers fabricating piping system components and fabricating brackets, supports, hangers, guides and anchors, in a shop or on site. Lays out and installs piping, tubing, fittings and related components (12) has one sub-task per material: copper tube and tubing, plastic, carbon steel, stainless steel, fibreglass and specialty piping. The standard notes that layout and installation methods vary considerably with the material. Installs, maintains, troubleshoots, repairs and tests valves (4) covers the valves the standard lists: gate, globe, ball, plug, butterfly, needle, relief, pop safety, toggle, check, pressure reducing, shutter and diaphragm. Installs, tests, maintains, troubleshoots and repairs heat tracing systems (3) covers steam tracing and liquid-filled tracing: water, glycol or a mix is the medium where consistent temperature control is needed, and steam where high heat energy is needed. The testing methods named across the block are hydrostatic, pneumatic, vacuum and in-service tests, with NDE for some materials.

Block C: Rigging, hoisting, lifting and positioning (15 questions)

Two tasks. Performs common rigging, hoisting, lifting and positioning (10 questions) runs through eight sub-tasks in the order a lift happens: determine the load, prepare the lift plan, select the equipment, inspect it, secure the lift area, set up the equipment, perform the lift, and maintain and store the equipment. The knots it names are the bowline, cat's paw, clove hitch and half hitch. Performs complex and critical rigging, hoisting, lifting and positioning (5) adds a sub-task for the calculations. The standard treats a lift as complex or critical when it involves several cranes, load transfers, an unbalanced load, lifting over live equipment, or conditions such as wind, ground conditions and weather; a lift close to a crane's maximum rated capacity is critical, and an engineer may be consulted.

Block D: Low and high pressure steam and condensate systems (24 questions)

Two tasks with the same four sub-tasks each: install the equipment, install the piping, test the system, and maintain, troubleshoot and repair it. Low pressure steam and condensate systems (10 questions) are found in settings the standard lists from distilleries and pulp mills to commercial buildings and process plants, for uses such as indirect water heating and central heating. High pressure steam and condensate systems (14 questions, the largest single task on the exam) add refineries and power generating plants and uses such as running turbines and pump seals, and the standard notes that additional certification may be required in some jurisdictions. The high pressure equipment list is longer too: beyond boilers, boiler trim, expansion joints, pumps, heat transfer equipment, steam traps and valves, it names flash tanks, superheaters, reheaters, de-aerators, desuperheaters, condensers and economizers.

Block E: Heating, cooling and process piping systems (27 questions)

The broadest block: nine tasks, eight of them tested. Each tested task has the same four sub-tasks (install the equipment, install the piping, test, and maintain, troubleshoot and repair), so the pattern repeats from system to system. Hydronic systems (6 questions) covers comfort and process heating and cooling, including high and low temperature hot water, chilled water and cooling towers. Process piping systems (5) covers piping for industries such as oil and gas refining, pulp, mining, food processing and chemical production. Industrial water and waste treatment systems, hydraulic systems, fuel systems, and compressed air and pneumatic systems (instrument, utility and process air) have 3 questions each. Heating, ventilation, air conditioning and refrigeration (HVACR) systems and medical gas systems, which supply gases such as oxygen, nitrous oxide, nitrogen, carbon dioxide and medical air in health care facilities, clinics and laboratories, have 2 each. The ninth task, installs and tests fire protection systems (E-21), is in the standard but is not common core, so it carries no questions. The preparation guide's rule is that a sub-task performed in fewer than 70 per cent of provinces and territories is not tested, and the standard notes that in some jurisdictions this work can only be done by a certified sprinkler fitter.

Block F: Renewable energy systems (8 questions)

The lightest block: three tasks, each again with install the equipment, install the piping, test, and maintain, troubleshoot and repair. Geo-exchange and geothermal systems (2 questions) move heat from a ground source or deep earth through closed or open loops. Solar heating systems (2) harness energy from the sun in residential and ICI settings. Heat recovery systems (4), half the block, recover heat from sources the standard lists as refrigerant gas, exhaust steam, flash steam, waste water, cooling water, heat recovery ventilators (HRV) and gland seals.

Block G: Commissioning, start-up and turnover (11 questions)

Two tasks. Prepares system for commissioning, start-up and turnover (6 questions) covers flushing the system, treating it chemically, pre-checking it and selecting and connecting commissioning equipment. Commissions systems (5) covers securing the commissioning area, pressurizing the system, inspecting it, correcting faulty conditions and taking part in start-up and turnover procedures, which the standard says can be done with owners' representatives or the authority having jurisdiction (AHJ).

04What kind of questions are they?

The Red Seal Program describes the Steamfitter/Pipefitter question mix as knowledge and recall 35 to 45 per cent, procedural and application 45 to 55 per cent and critical thinking under 10 per cent. On a 130-question exam that is roughly 46 to 58 recall questions, 59 to 71 procedural questions and fewer than 13 critical thinking questions. Recall is a large share, but procedure is still the biggest part of the paper.

The exam information page gives one example of each type. The recall example asks which type of drawing is used for shop assembly, and the answer is a spool sheet. The procedural example asks what is done with shackles and pins when a job is complete: the pins go back in the shackles and they are stored in a clean, dry environment. The critical thinking example asks why a test gauge reading fluctuates during a 24-hour air test, and the answer is a change in ambient air temperature.

The Red Seal Exam Preparation Guide explains the three types. Knowledge and recall questions check facts related to doing a sub-task, and you can often answer them before you look at the options. Procedural and application questions test whether you know a procedure, and may include calculations. Critical thinking questions check problem-solving: you are given a situation and asked for the cause or the result.

For procedural questions the guide says to know all the procedures in the standard, not just the ones you have carried out yourself. In this trade that means the sequence of a lock-out, laying out offsets and templates, making up joints in each piping material, planning and making a lift, installing and testing valves, setting up a hydrostatic or pneumatic test, and flushing, pressurizing and commissioning a system. For recall, the guide suggests working through the range of variables under each sub-task, the lists of equipment, materials, valves, drawings and methods the wording refers to, with index cards: the term on one side and the meaning on the other. The guide also says there are no trick questions, but the incorrect options are not always obvious, so when you review a practice question, work out why each wrong option is wrong as well as why the right one is right.

05What do you get in the exam room?

The Red Seal Exam Preparation Guide lists what you are provided with: an exam booklet, a diagram booklet if one is required, a pencil and eraser, a calculator if needed, and a bubble sheet to record your answers. It also lists other reference material "if required": an acronym list, math formulas and code book information. Scrap paper is provided too.

For Steamfitter/Pipefitter the exam information page publishes both a formula sheet and an acronym list and says both will be provided with the exam sitting. The formula sheet is in imperial units. It gives constants (π = 3.14; 1 ft² of equivalent direct radiation for steam = 240 Btuh; 1 US gallon = 8.33 lb; 12 000 BTU of cooling = 1 ton; a pressure head conversion of 0.433 psi per foot; and 1.414 as the travel offset of a 45° elbow), a table of conversion factors between metric and imperial units, and general formulas: expansion = L × ΔT × α, force = P × A, heat and flow from temperature difference, mass and specific heat capacity, grade = drop or rise ÷ run, and pressure = height × density. The hydronic formulas are built on Btuh = gpm × 500 × ΔT, rearranged for gpm and for ΔT, and the sheet ends with area formulas (circle, cylinders, rectangle, rectangular boxes, sphere and triangle) and volume formulas (cylinder, rectangular box and sphere).

The acronym list covers terms such as AHJ (authority having jurisdiction), OS&Y (outside screw and yoke), NFPA (National Fire Protection Association), WHMIS (Workplace Hazardous Material Information System), SDS (safety data sheet) and PPE (personal protective equipment), along with units and pipe materials such as PVC and CPVC. What the sheet leaves out matters as much: there are no fitting take-offs, no steam table values, no sling angle factors and no code limits, and the page lists no code book information. The preparation guide's advice on formulas applies here: the key is knowing when to use which formula, so practise choosing the formula as well as working it. For anything else you are wondering about, ask your provincial or territorial office what comes with the exam where you write.

You may not bring your own materials or electronics. The guide's rules say no materials, bags, phones, watches or personal calculators in the room, and you use only the pencils, erasers, calculators and scrap paper provided. It adds that your province or territory may have specific rules of its own. More on the day itself is in what to expect on exam day.

06Where should your study time go?

Follow the weights. In order: B (29), E (27), D (24), A (16), C (15), G (11) and F (8). Blocks B and E together are 56 of 130 questions, or 43.1 per cent. Add D and you have 80 of 130, which is 61.5 per cent. The other four blocks are 50 questions, or 38.5 per cent.

You need 91 correct answers. Even a perfect score on B, E and D leaves you 11 short, and a more realistic 75 per cent on those three blocks (60 marks) means you need 31 of the other 50. A sensible split is to give B, E and D about 60 per cent of your time, in weight order, and share the rest across A and C first, with 31 questions between them, then G and F.

Within a block, the questions are not shared evenly. Block D puts 14 of its 24 questions on high pressure steam and condensate, so know the high pressure equipment and its testing and troubleshooting in depth. Block B puts 12 of 29 on laying out and installing piping in each material and 10 on fabrication, so valves (4) and heat tracing (3) come second there. Block C puts 10 of 15 on common lifts, and Block F puts 4 of 8 on heat recovery. Block E is the exception: 27 questions over eight tested tasks of 2 to 6 questions each, so cover all eight for breadth rather than going deep on one. Some content runs through several blocks: testing comes up in B, D, E, F and G, and the safety and lock-out skills in Block A apply to every system you work on.

Because 45 to 55 per cent of the questions are procedural, most of your time belongs to method: walk each job in the standard through in order, from selecting materials to testing and commissioning. With 35 to 45 per cent recall, the terms in the range of variables matter too. Practise the formula sheet calculations (expansion, force, pressure head, hydronic Btuh and gpm, offsets, areas and volumes) until choosing the right formula is automatic. Every question is worth one mark and there is no penalty for a wrong answer, so answer everything. For a full method, see how to study for the Red Seal exam.

07How do you use the standard as a checklist?

The Red Seal Occupational Standard for Steamfitter/Pipefitter is public and free. The 2022 edition, the one the current exam is built on, lists 7 major work activities, 26 tasks and 107 sub-tasks. Of those sub-tasks, 104 are common core and testable; the other three are the fire protection sub-tasks under Task E-21, which carries no exam questions. The preparation guide states plainly that exam questions are based on the sub-tasks and that the standard, not any textbook, is the basis of the exam.

To use it as a checklist, go through the 26 tasks and rate yourself on each one using the three levels from the Red Seal Self-Assessment Guide for Steamfitter/Pipefitter, which lists every task and sub-task with the number of questions assigned to each major work activity and task: low (no or very little understanding or experience), medium (some experience in limited situations) or high (fully competent in many situations). The guide then asks you to write down how many questions you think you would get right. Set your ratings beside the question counts above. A low rating on high pressure steam and condensate (14 questions), laying out and installing piping (12), fabrication (10), common rigging (10) or low pressure steam and condensate (10) is your first priority. A low rating on a two-question task such as medical gas or HVACR comes later, but it still goes on the list.

For each weak task, read its sub-tasks in the full standard. Each one lists the skills and knowledge expected and a range of variables: the equipment, materials, valves, drawings, testing methods and test media the wording refers to. The guide recommends making sure you understand every term used there, because the same terms appear on the exam. Brand names and slang do not. Appendix B of the standard lists the trade's tools and equipment.

Official links: the Steamfitter/Pipefitter trade page and Red Seal Occupational Standard, the 2022 standard as a PDF, the exam information page (the breakdown, the question mix, the formula sheet and the acronym list) and the Self-Assessment Guide.

08Where and how do you write it?

Each province and territory administers the exam itself and decides who is eligible to write it, so booking, fees and rewrite rules depend on where you write. In Ontario that is Skilled Trades Ontario; see the Ontario Red Seal exam guide. For anywhere else, find your jurisdiction in the guides by province. Compare costs in Red Seal exam fees by province, and read what happens if you fail the Red Seal exam before you book. If you are coming to the exam through work experience rather than an apprenticeship, see how to challenge the Red Seal exam.

09Questions people ask

How many questions are on the 307A Steamfitter Red Seal exam?

The 307A Steamfitter exam, the Red Seal Steamfitter/Pipefitter exam, has 130 multiple-choice questions and a four-hour writing time, about 1 minute 51 seconds per question. Each question has four options and one correct answer, and the pass mark is 70 per cent, which means 91 correct answers out of 130. You can miss 39 questions and still pass.

Which section of the Steamfitter/Pipefitter Red Seal exam has the most questions?

Block B, layout, fabrication and piping installation, has the most with 29 of the 130 questions (22.3 per cent). Heating, cooling and process piping systems is next with 27, then low and high pressure steam and condensate systems with 24. Those three blocks hold 80 of the 130 questions. The single largest task is high pressure steam and condensate systems, with 14 questions.

Is 307A the same as the Steamfitter/Pipefitter Red Seal exam?

Yes. Steamfitter/Pipefitter is the Red Seal Program's name for the trade, and Ontario certifies it as Steamfitter with trade code 307A. Alberta and British Columbia call it Steamfitter-Pipefitter. The exam is the same interprovincial Red Seal exam everywhere: 130 questions, four hours, 70 per cent to pass, built on the 2022 Red Seal Occupational Standard.

Is there a formula sheet on the Steamfitter Red Seal exam?

Yes. The Red Seal Program provides a formula sheet and an acronym list with the exam sitting. The sheet is imperial and gives constants such as 0.433 psi per foot of head, 240 Btuh per square foot of steam EDR and 1.414 for a 45 degree offset, conversion factors, expansion (L × ΔT × α), force (P × A), grade, pressure from height and density, hydronic Btuh = gpm × 500 × ΔT, and area and volume formulas. It does not give fitting take-offs, steam table values, sling angle factors or code limits. A calculator is provided if needed; you cannot bring your own.

Is steamfitter a compulsory trade in Ontario?

Yes. Steamfitter (307A) is a compulsory trade in Ontario. Skilled Trades Ontario says that to work in it you must hold a Registered Training Agreement, a Provisional Certificate of Qualification or a Certificate of Qualification and appear on its Public Register, and the Certificate of Qualification must be renewed to stay valid. The apprenticeship is 9,000 hours: 8,280 on the job and 720 in school.

What types of questions are on the Steamfitter/Pipefitter Red Seal exam?

The Red Seal Program describes the Steamfitter/Pipefitter mix as 35 to 45 per cent knowledge and recall, 45 to 55 per cent procedural and application and under 10 per cent critical thinking. On 130 questions that is roughly 46 to 58 recall questions, 59 to 71 procedural questions and fewer than 13 critical thinking questions. Its own critical thinking example asks why a test gauge reading fluctuates during a 24-hour air test; the answer is a change in ambient air temperature.

10Sources

• Red Seal Program: Steamfitter/Pipefitter exam information: 130 questions, the question count for each major work activity and task, the question mix with one example of each question type, and the formula sheet and acronym list provided with the exam. This is the breakdown of the current exam.
• Red Seal Program: Steamfitter/Pipefitter trade overview: the Red Seal trade name and the Red Seal Occupational Standard for the trade.
• Red Seal Occupational Standard: Steamfitter/Pipefitter (2022, PDF): the standard the current exam is built on: the 7 major work activities, 26 tasks and 107 sub-tasks, task titles and descriptors, the range of variables, the common core markings and the appendices.
• Red Seal Program: Steamfitter/Pipefitter formula sheet (PDF): the constants, conversion factors and general, hydronic, area and volume formulas provided with the exam.
• Red Seal Program: Steamfitter/Pipefitter acronyms (PDF): the acronym list provided with the exam.
• Red Seal Exam Self-Assessment Guide: Steamfitter/Pipefitter (PDF): the question count per major work activity and task, and the three-level self-rating used in the checklist section.
• Red Seal Exam Preparation Guide: exam format, pass mark, writing time, question types and study methods, exam supplies, exam room rules and the common core rule.
• Skilled Trades Ontario: Steamfitter: the Ontario trade name and code (Steamfitter, 307A), its compulsory status and renewal rule, and the apprenticeship hours.

The question counts were checked against the Red Seal Program's exam information page and Self-Assessment Guide for Steamfitter/Pipefitter on September 26, 2026, and the task lists come from the 2022 Red Seal Occupational Standard, the edition the current exam is built on. If the Red Seal Program changes the breakdown, its page is the final word. If you find one of ours out of date, tell us.

Related: All guides · How to study for the Red Seal exam · How many questions are on the Red Seal exam · Red Seal exam pass mark · What to expect on exam day · The Red Seal exam in Ontario · 307A Steamfitter practice exam · Free 307A practice questions · 415A Cook exam guide

11Practice for this exam

TicketPrep 307A practice tests are weighted to the breakdown above, block by block, and every answer is explained, all four options. You can try five sample questions with no account.

Ten free questions per trade, no account: free practice questions. How our questions are written and checked: how our questions are made.