The exam content shown below only lists main category headings. Please consult the PSI exam bulletin from the button below for more detailed information about subject sub-categories.
| Part 1 - Written Portion | ||
| Subject Area | Sub- categories | No. of Questions |
|---|---|---|
| General Regulations, Inspections & Permits | 3 | 9 |
| Gas Piping, Equipment & Appliances | 10 | 21 |
| Venting | 5 | 12 |
| Traps & Cleanouts | — | 2 |
| Fixtures, Equipment & Clearances | — | 2 |
| Water Heaters | 2 | 3 |
| Piping, Valves & Controls | — | 3 |
| Water Supply | 3 | 6 |
| Hangers & Supports | — | 2 |
| Drain, Waste & Vent | 6 | 13 |
| Separators, Interceptors & Grease Traps | 3 | 5 |
| Joints & Connections | — | 2 |
| Part 2 - Practical Portion | |
| Subject Area | No. of Questions |
|---|---|
| Isometric Analysis | 20 |
| General Trade Calculations | 5 |
| Gas Piping | 7 |
| Gas Venting | 8 |
NOTE: The PSI bulletin is in error. The correct statute for the amendments to NFPA 58 is CMR 8.00 (not 6.00).
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