PLB
Red Seal Trade
Plumber
Red Seal / red-seal.ca · Ontario Building Code · CSA
Ontario Building Code Part 7 · CSA B64 · National Plumbing Code of Canada
Exam Questions
50
per session
Pass Gate
90%
RISL standard
Refresher Interval
2 yr
recommended
Retest Window
6 mo
if not yet passed
Curriculum — 4 Topic Blocks
Block 01 / 04
Plumbing Systems Design
- Drainage, waste & vent (DWV) sizing
- Fixture unit calculations
- Water supply demand calculations
- Cross-connection control — backflow prevention
Block 02 / 04
Piping Materials & Joining
- Copper, CPVC, PEX & ABS systems
- Soldering, crimping & compression joints
- Cast iron no-hub coupling systems
- Pressure testing procedures
Block 03 / 04
Sanitary & Storm Systems
- Trap types & venting requirements
- Grease interceptors & oil separators
- Storm drainage & sump systems
- On-site sewage systems
Block 04 / 04
Code Compliance & Inspection
- Ontario Building Code Part 7 key sections
- National Plumbing Code compliance
- Permit process & inspection stages
- Backflow device testing requirements
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30-Day Access
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$
49.95
CAD
30-day access
per worker
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Industrial employers in Oil & Gas, Mining, Power Generation, Utilities, and Manufacturing use the RISL Living Competency System to verify, track, and enforce workforce competency in Plumber. Each worker enrolment gives that individual 30 days of access at $49.95 CAD — the same rate whether you enrol 1 or 1,000. Workers must complete the exam within their access window to receive a Certificate of Completion.
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Result Levels
| Level |
Score |
Result |
Timing |
Next Step |
| Passed |
90–100% |
Certificate of Completion |
Recommended refresher interval: 2 years |
Refresher within 2 years to stay current |
| Not yet passed |
70–89% |
No certificate |
Retest recommended within 6 months |
Targeted study on weak areas |
| Not yet passed |
Below 70% |
No certificate |
Retest within 30 days |
Structured study on all flagged areas |