P&ID Combustion Schematics Design | Complete Combustion
Stamped P&ID & Combustion Process Schematics
Complete Combustion provides licensed, P.Eng-stamped Piping and Instrumentation Diagrams (P&IDs), process flow schematics, and mechanical arrangement drawings for industrial combustion systems, process heating equipment, and fuel delivery infrastructure across Ontario and Canada. Engineered strictly to ISA-5.1 symbology standards and governing fuel safety codes, our drawings serve as the technical foundation for regulatory approvals and field execution.
The Role of an Engineered Combustion P&ID
A combustion P&ID is not merely a drafting exercise. It is a critical safety, legal, and operational document. For industrial plants, mechanical contractors, and burner service technicians, an engineered P&ID defines the precise interaction between mechanical fuel piping, fluid pressure dynamics, instrumentation sensors, and Burner Management System (BMS) safety interlocks. Operating under a Certificate of Authorization issued by Professional Engineers Ontario (PEO), Complete Combustion prepares complete schematic packages ready for direct submittal to the TSSA and third-party inspection bodies.
Core Engineering & Schematic Capabilities
1. ISA-Standard P&IDs for Combustion Systems
Every schematic is prepared in accordance with ANSI/ISA-5.1 instrumentation symbols and identification standards:
- Fluid Flow & Piping Mapping: Unambiguous drafting of main fuel supply lines, pilot gas circuits, atomizing air/steam lines, purge ducts, combustion air lines, and atmospheric vent headers.
- Instrumentation & Sensor Tagging: Standardized alphanumeric tag designations for temperature indicators (TI), pressure switches (PSHL), flow transmitters (FT), flame scanners (BE), and limit controllers.
- Boundary & Tie-In Points: Clear definition of battery limits, flanged utility interfaces, customer connection points, and field piping scope splits.
2. CSA B149.3 & TSSA Compliance Detailing
In Ontario and across Canada, industrial gas-fired equipment exceeding standard appliance ratings must comply with CSA B149.3. Our P&IDs capture every code-mandated safety element:
- Safety Shutoff Valve (SSOV) Configurations: Dual automatic safety shutoff valve arrangements, proof-of-closure (POC) switch connections, and normally open atmospheric vent valves (double block-and-bleed configurations).
- Overpressure & Underpressure Protection: Correct upstream and downstream tap placement for High Gas Pressure Switches (HGPS) and Low Gas Pressure Switches (LGPS).
- Manual Isolation & Test Ports: Inclusion of full-port manual ball valves, dirt pockets/strainers, pressure gauge test points, and quarter-inch leak-test ports required for annual valve seat testing.
3. Safety Interlock & Sequence Mapping
- Combustion Air Proving: Differential pressure switch taps across combustion blowers and intake filters to prove airflow before ignition trials.
- Purge & Damper Positioning: Airflow limit switch verification ensuring open-damper position during pre-purge per NFPA 86 requirements.
- Flame Safeguard Interlocks: Direct mapping of UV/IR flame scanners, pilot ignition transformers, and main burner flame sensors.
4. Line Designation Tables & Instrument Schedules
- Line Designation Tables: Detailing line numbers, nominal pipe sizes (NPS), operating pressures, maximum design pressures, test pressures, pipe material specifications, and insulation callouts.
- Instrument Schedules: Summarizing instrument tag numbers, process service descriptions, setpoints, calibrated ranges, output signals, and manufacturer models.
- Valve Schedules: Itemizing manual shutoff, pressure regulating, modulating flow, and automatic safety shutoff valves with body materials, trim, CV ratings, and fail-safe positions (FC/FO).
Collaborative Partner Model for Mechanical Contractors
We operate strictly as an independent, design-only combustion engineering practice. Mechanical installers, pipefitters, and burner service contractors partner with us to generate stamped engineering packages required for client approvals and field installation.
- Zero Trade Conflict: We do not supply mechanical installation labour, weld pipe, or sell proprietary burner lines.
- Clear Field Execution: Our schematics are drawn with clean connection callouts, eliminating field ambiguity and preventing costly piping rework.
- Fast Turnaround: Direct collaboration between our senior engineers and your project managers ensures drawings are delivered on schedule.
Frequently Asked Questions
Why do I need a P.Eng stamp on a combustion P&ID in Ontario?
Under Ontario fuel safety regulations and TSSA mandates, industrial gas installations exceeding standard certified appliance limits require formal engineering review and P.Eng certification to verify compliance with CSA B149.3.
What information is needed to start drafting a combustion P&ID?
We require available fuel supply pressures, fuel types, total burner firing rate (MMBtu/hr or kW), process airflow parameters, and existing field equipment details or site photos.
Can you review and update our legacy or un-stamped drawings?
Yes. We perform engineering reviews on existing, un-stamped, or outdated combustion schematics, update them to current CSA B149.3/NFPA 86 standards, and provide stamped drawing revisions for facility documentation or inspections.
Consult with Our Engineering Team
- Office: 33 Paddington Rd, Brampton, ON L6P 2E3
- Phone: +1 647 554 8108
- Email: info@completecombustion.ca
- Turnaround: Initial scope reviews returned within 2448 business hours.