1. About the RBQ 11.1 contractor licence exam

The RBQ sub-category 11.1 exam is the theoretical examination administered by the Régie du bâtiment du Québec for candidates seeking to act as qualified representative (répondant) for a contractor licence covering pressurized industrial or institutional piping. The licence excludes work exclusively reserved for master plumbers in piping; it covers boiler installations, steam generators, pressure vessels, and the connecting pressure piping in industrial plants and institutions such as hospitals and food-processing facilities, plus similar or related construction work.

The exam is offered in French and English in multiple-choice format, lasts 3 hours, and the passing grade is 60%. It is built around four official modules covering definitions and types of systems, the regulatory framework, plans and specifications, and the standards for executing installation, testing, commissioning and maintenance work.

2. Exam structure at a glance

The RBQ does not publish a percentage weighting per module for this licence. By content volume, Module 4 dominates with 34 skill statements across 6 ECs. EC 8 (placement of pressure installations) carries 11 skill statements — the heaviest single block in Module 4 and the operational core of the exam. Module 2 is unusually large for an Encadrement module: 10 skill statements, because pressure work touches an unusually wide regulatory surface — Quebec Construction Code Chapters I, II and III, the Pressure Vessels Act, NQ standards, CAN/CSA codes, environmental laws, and WHMIS.

3. Detailed competency elements

Module 1 — Definitions and types of systems

• EC 1 — Pressure-installation terminology (7 skill statements): low vs. high pressure (by product state — liquid, solid, gas); pressurized installation, pressure vessel, and pressure piping definitions; pressure vessel types (boiler, steam generator, steam cooking kettle, steam reheater, expansion tank, drain tank); boiler types (superheated water, water-tube — aquatubulaire, heat-recovery, fire-tube — ignitubulaire); accessories (fitting, safety valve, valve, pressure gauge, water-level indicator, injector, rupture disc, water column, support and fastening); pipe-joint terms (brazing, slip welding, threaded, flared, compression, grooved, seismic); pressure units (psi, kPa, kW, BTU, °C, L/s, m³/m).
• EC 2 — Pressure-installation characteristics (6 skill statements): industrial processes using pressure installations (transport, cooking, distillation, sterilization, humidification); pressurized fluids, gases and solids and their behaviour in piping (propulsion, anchoring); direct vs. indirect system operation; pump-driven, air-driven, vacuum and steam pressurized installations; pipe materials (steel, stainless steel, cast iron, copper, brass, plastic) and applications; components and accessories — roles and selection criteria.

Module 2 — Legislative, normative and regulatory framework

• EC 3 — Pressure-installation regulatory framework (10 skill statements): certification bodies (ANSI, ASME, ASTM, CSA, ULC); Quebec Construction Code Chapter I — Building (scope for pressure work); Quebec Construction Code Chapter II — Gas and Safety Code Chapter III — Gas (natural gas); Act respecting Pressure Vessels (A-20.01) and its Regulation (A-20.01, r.1.1); standards in scope (NQ 3650-900, NQ 5710-500, CAN/CSA-B139, CAN/CSA-B149.1); RBQ role in welding-method certification, company certification, and welder qualification; Environmental Quality Act (Q-2), Hazardous Materials Regulation, Atmospheric Quality Regulation; WHMIS (SIMDUT) application to pressure installations; Quebec Construction Code Chapter III — Plumbing interface; municipal regulations.

Module 3 — Plans and specifications

• EC 4 — Reading drawings and plans (7 skill statements): types of plans for pressure installations; locating elements on a plan; symbols for pressure piping; dimensions and annotations; sections and details; notes and tables; quantity take-off for pressure piping and components.
• EC 5 — Reading specifications (3 skill statements): divisions and sections of a specification for pressure installations; general charges; particular charges.

Module 4 — Standards and execution of work

• EC 6 — Planning and organizing (6 skill statements): logical execution sequence; material ordering and reception; work-declaration filing and required forms; inspection process (with or without quality program); interface coordination between trades; conditions required when there is no designer.
• EC 7 — Producing an installation diagram (3 skill statements): calculations (angles, pipe and tank volumes and capacities, pressure loss, thermal energy); isometric and orthogonal layouts; compliance verification against codes and plans.
• EC 8 — Placement of pressure installations (11 skill statements — the heaviest single EC): material and equipment delivery and on-site placement; location verification and adjustment; tool calibration and safe-use communication; worker training on installation methods including rigging; pressure-piping assembly techniques; installation requirements by fluid type (liquid, gas); installation requirements by building/industry type (food processing, heavy industry, filtration/treatment plants, hospitals); resolving technical and coordination issues on site; quality control during execution; maintaining wall, fire-stop and structural integrity; verifying that work conforms to codes and plans.
• EC 9 — Testing and commissioning (4 skill statements): startup or commissioning collaboration; test methods (preheating and postheating of welded joints, non-destructive and leak testing, hydrostatic, static, hydropneumatic); pressure and accessory adjustments (safety valve, spring, humidifier); handover of instruction and maintenance manuals to owner.
• EC 10 — Verification, maintenance and repair (7 skill statements): reading existing installation documentation; diagnosing operational problems; repair solutions (disassemble, reassemble, adjust); verification and maintenance methods; safe under-pressure connection techniques; component calibration, maintenance, replacement and upgrade; maintenance and repair reports for the owner.
• EC 11 — Health and safety (3 skill statements): identifying risks (confined-space work, lifting equipment, explosion, work at heights, asbestos, welding, pressurized products); installation and maintenance precautions (lockout/tagout — cadenassage); transport of dangerous goods and pressurized materials.

4. Documents at the exam — mixed-book format

Provided at the exam (open book — 4 documents)

• Code de sécurité pour les travaux de construction (RLRQ, S-2.1, r.4) — Safety code for construction work
• NQ 3650-900 — Installation Code for Boilers and Pressure Vessels and Pressure Piping. The central installation reference for this licence — welding, joints, hydrostatic testing, safety valves, water-level indicators, rupture discs, accessory placement.
• CAN/CSA-B139 — Oil-Burning Equipment Installation Code
• CAN/CSA-B149.1 — Natural Gas and Propane Installation Code

Recommended reading only (closed book — 6 documents)

• Loi sur le bâtiment (RLRQ, B-1.1) — Building Act
• Code de construction du Québec (RLRQ, B-1.1, r.2) — Chapter I, Building 2005
• Règlement sur la qualification professionnelle des entrepreneurs et des constructeurs-propriétaires (RLRQ, B-1.1, r.9) — sub-category 11.1 scope
• Code de sécurité (RLRQ, B-1.1, r.3) — Safety Code (in-use buildings)
• Loi sur la santé et la sécurité du travail (RLRQ, S-2.1) — Act respecting occupational health and safety
• NQ 5710-500/2000 — Medical Gas Distribution Networks (Gaz médicaux ininflammables) — characteristics and test methods for healthcare facilities

Several Quebec documents are available free of charge on publicationsduquebec.gouv.qc.ca. CSA standards are available from the CSA store; NQ standards from BNQ (Bureau de normalisation du Québec).

5. Material provided at the exam

The calculator, ruler, paper and pencil needed for the exam are supplied on site. Only the documents and material handed out by the exam supervisor may be used during the session — personal copies, notes, electronic devices, and additional reference material are not allowed.

6. What makes the RBQ 11.1 exam different

The RBQ 11.1 contractor licence is the installation licence for pressurized industrial or institutional piping — boiler systems, steam generators, pressure vessels, and the process piping that connects them in plants, food-processing facilities, filtration and treatment plants, and hospitals. Four characteristics make this exam stand apart.

The largest open-book set of any RBQ contractor sub-category — four installation codes on the desk. NQ 3650-900 (boilers and pressure piping), CAN/CSA-B139 (oil-burning equipment), CAN/CSA-B149.1 (natural gas and propane), and S-2.1 r.4 (Safety code for construction work). Code navigation is therefore a primary tested skill: candidates who haven't drilled the table of contents of each book in advance will lose time inside the 3-hour window.

RBQ welding qualification is a tested topic. EC 3.6 tests the candidate's knowledge of the RBQ's specific role in welding-method certification, company certification, and welder qualification for pressure-piping welding. No other RBQ contractor sub-category tests this directly. Pressure-piping welds undergo non-destructive testing (radiography, ultrasonic, dye penetrant) and the exam tests preheating and postheating of welded joints.

An unusually wide regulatory surface. Module 2 alone carries 10 skill statements — large for an Encadrement module — because pressure work touches Quebec Construction Code Chapters I, II and III, the Pressure Vessels Act and its regulation, NQ standards, CAN/CSA codes, the Environmental Quality Act, the Hazardous Materials Regulation, the Atmospheric Quality Regulation, WHMIS (SIMDUT), and municipal regulations. Five certification bodies are in scope: ANSI, ASME, ASTM, CSA, ULC.

Industry-specific installation requirements. EC 8.7 explicitly tests installation requirements that differ by industry — food processing (sanitary), heavy industry (high-temperature/high-pressure), filtration and treatment plants (chemical resistance), hospitals (medical gases and high reliability). Each industry imposes its own constraints on pipe material, joint technique, and accessory selection.

7. Recommended preparation strategy

1. Master NQ 3650-900 navigation. It is the central open-book reference. Drill the table of contents — boilers, pressure piping, joints, welding, accessories, testing — until you can locate any clause in seconds.
2. Master CAN/CSA-B149.1 and CAN/CSA-B139 navigation. Both are open at the exam. B149.1 covers natural gas and propane (fuel-system side of pressure installations); B139 covers oil-burning equipment. Practise locating venting, piping size and clearance clauses quickly.
3. Master the RBQ welding-qualification process. EC 3.6 tests this directly: welding-method certification, company certification, welder qualification. Know how preheating and postheating of welded joints is documented, and how non-destructive testing fits into the qualification chain.
4. Master pressure-vessel and boiler vocabulary. Boilers: water-tube (aquatubulaire), fire-tube (ignitubulaire), superheated water, heat-recovery. Vessels: steam generator, steam cooking kettle, steam reheater, expansion tank, drain tank. Accessories: safety valve, rupture disc, water column, pressure gauge, water-level indicator, injector.
5. Master the five certification bodies. ANSI, ASME, ASTM, CSA, ULC — know each one's mark and the kind of component it certifies.
6. Anchor preparation around Module 4 (34 skill statements). EC 8 alone has 11 skill statements covering on-site placement; read them as a sequenced workflow from material delivery through fire-stop integrity verification.
7. Master pipe materials, joint techniques, and pressure testing. Materials: steel, stainless steel, cast iron, copper, brass, plastic — by application. Joints: brazing, slip welding, threaded, flared, compression, grooved, seismic. Tests: hydrostatic, static, hydropneumatic, plus non-destructive and leak testing.
8. Master the environmental and WHMIS regulatory layer. Q-2 Environmental Quality Act, Hazardous Materials Regulation, Atmospheric Quality Regulation, WHMIS (SIMDUT). EC 3.7 and 3.8 test these directly.
9. Take at least two full mock exams under real conditions (3 hours, only the four open-book documents on the desk) before scheduling the real exam.
10. Review every wrong answer. The Prof-RBQ.ca platform shows the reasoning behind each correct answer — read every explanation, even on questions you got right.

8. Why Prof-RBQ.ca for the RBQ 11.1 exam

• Aligned with the official RBQ structure — content mapped one-to-one to the four modules and their 11 competency elements, with extra depth on Module 4 (34 skill statements across 6 ECs) and on the unusually wide regulatory surface of Module 2.
• Four-code navigation drills — practice finding the right clause in NQ 3650-900, CAN/CSA-B139, CAN/CSA-B149.1, and S-2.1 r.4 in seconds, so all four codes work for you on exam day.
• EC 8 placement-sequence drilling — 11 skill statements walked through as a sequenced workflow (delivery → location → tool calibration → worker training → assembly → quality control → fire-stop integrity).
• RBQ welding-qualification focus — welding-method certification, company certification, welder qualification, preheating/postheating, non-destructive testing — drilled until automatic.
• Closed-book training methodology — flashcards and spaced practice for the six closed-book documents (including NQ 5710-500 medical gases), with navigation drills for the four open-book references.
• Mock exams in RBQ format — multiple choice, 3-hour timing, 60% passing grade — so exam day feels familiar.
• Detailed answer explanations — every question, right or wrong, comes with a written rationale citing the underlying article, code, or standard.
• Bilingual — full course in English and French. The RBQ exam itself is offered in both languages.
• A free section is available so you can try the platform before committing.

Frequently asked questions