PSR for Flammable Liquid Storage Systems

Storing and handling flammable liquids is a serious safety concern across many industries in Ontario. A Pre-Start Health and Safety Review (PSR) is not just a regulatory requirement—it’s a critical safety measure to help prevent fires, explosions, and environmental hazards. HITE Engineering provides expert PSRs for fuel storage rooms, chemical tanks, and other flammable liquid systems, helping you stay compliant with the Ontario Fire Code, NFPA 30, and other relevant standards.

Common Hazards with Flammable Liquids

Flammable liquids pose several risks that can quickly escalate into dangerous incidents if not properly managed:

Low flashpoints and vapor release make many liquids susceptible to ignition from small sparks or heat sources.
Improper ventilation allows vapors to accumulate, increasing the chance of fire or explosion.
Incompatible materials or poor temperature control can lead to spontaneous ignition or chemical reactions.

These hazards are especially common in fuel storage areas, chemical labs, industrial coating lines, process tanks, and maintenance shops handling solvents.

Code Compliance Review

Our reviews are grounded in the latest codes and regulations. A PSR from HITE ensures your flammable liquid system meets applicable requirements such as:

Ontario Fire Code (OFC) – for fire safety, ventilation, signage, and storage quantity limits.
NFPA 30: Flammable and Combustible Liquids Code – for design, protection, and handling guidelines.
CSA B149 – for gas-related storage systems (where applicable).
TSSA regulations – for installations regulated under Ontario’s Technical Standards and Safety Authority.

We interpret and apply these codes specifically to your setup, identifying compliance gaps and recommending practical solutions.

Engineering Evaluation Scope

Every PSR we conduct includes a comprehensive review of your flammable liquid system’s design and operational safety. Key evaluation areas include:

Storage containers: Construction material, fire-resistance rating, labeling, and compatibility with contents.
Spill containment: Presence of berms, drip trays, sloped flooring, and drainage strategies to contain accidental releases.
Ventilation: Whether general or mechanical ventilation is sufficient to control vapors in accordance with code.
Ignition sources: Analysis of potential ignition risks, including nearby motors, heating elements, or non-rated electrical devices.
Signage and emergency plans: WHMIS-compliant labeling, hazard signage, fire extinguisher placement, and emergency egress planning.
Explosion-proof equipment: Ensuring lighting, switches, and other devices in hazardous zones meet CSA or Class I Division 1/2 requirements.

We also assess the compatibility of construction materials, equipment grounding, and overall room classification as defined by the OFC and NFPA 497/499.

Typical Engineering Recommendations

Depending on your existing conditions, our PSR may include recommendations such as:

Ventilation system upgrades to meet minimum air exchange rates and vapor dispersion requirements.
Isolation of ignition sources or conversion to intrinsically safe equipment.
Improvements to room rating such as wall construction upgrades, fire doors, or explosion venting modifications.
Spill containment improvements, including secondary containment sizing or retrofitted floor slope modifications.

All recommendations are backed by code citations and tailored to your specific site, process, and chemical properties.

What You Need to Provide

To streamline your PSR and avoid delays, we ask that you provide the following information before our assessment:

SDS (Safety Data Sheets) for all stored or used flammable or combustible liquids.
Room layouts or equipment schematics, including HVAC/ventilation drawings.
Storage container specs, such as volume, type (e.g., drums, totes, cabinets), and construction.
Process descriptions, including how flammable liquids are used, transferred, or disposed of.

Where available, storage volume totals, emergency plans, and photos of the room or setup can further assist in our evaluation.

What You Receive

After the assessment, you’ll receive:

A written engineering report outlining current compliance, hazard observations, and corrective actions required.
A sealed PSR letter from a licensed Ontario Professional Engineer (P.Eng.), as required under Regulation 851.
Clear documentation to demonstrate due diligence for Ministry of Labour, fire inspectors, or TSSA audits.
Optional support with implementing recommendations or reviewing corrective actions.

We also remain available for follow-up consultations to ensure full closure of any PSR-related actions.

Industries We Support

We’ve conducted flammable liquid PSRs across a wide range of Ontario facilities:

Manufacturing plants using paints, solvents, or fuels in production or maintenance.
Chemical processing and R&D labs handling flammable reagents and waste.
Food and beverage operations with alcohol-based ingredients or cleaning chemicals.
Maintenance shops storing flammable lubricants, degreasers, or cleaning agents.
Warehouses and distribution centers storing packaged flammable liquids or aerosols.

No matter your industry, our engineers understand how to apply code requirements while supporting operational efficiency.

Why Choose HITE Engineering?

Almost 30 years of experience in Ontario fire code and PSR compliance.
Multi-disciplinary team covering mechanical, fire protection, and chemical engineering.
Fast turnaround times and practical, implementation-ready recommendations.
Proven experience across hundreds of PSRs under Regulation 851, Section 7—including flammable storage triggers.

Whether you’re installing a new flammable liquid system, modifying an existing one, or being audited by the fire department, HITE can help ensure you’re safe and compliant.

Book a PSR for Flammable Liquid Storage

If you need a flammable liquid PSR or want expert advice on compliance, ventilation, or fire protection upgrades, contact HITE Engineering today. We’ll help you meet legal requirements, avoid costly violations, and most importantly—protect your team.