What Should Be Considered When Conducting a Fire Alarm System Survey?

A detailed survey of the installation site is crucial for fire alarm systems to function effectively. Proper planning not only meets legal requirements but also maximizes safety for people and property. This article discusses the key technical points and best practices to consider during the site survey for fire alarm system installation.

Key Factors to Consider During the Survey

1. Analyzing the Building’s Purpose and Structure:
Before designing a fire alarm system, determine the following:

Purpose: (Residential, commercial, industrial, etc.)
Number of floors and total area
Ceiling height and partitioning details
Construction materials: (Wood, steel, concrete, etc.)
Fire risk levels: (e.g., flammable material storage areas)

These factors are critical for deciding which types of detectors are needed.

2. Reviewing Current Regulations and Standards:
Ensure compliance with the relevant standards such as the “Regulation on Fire Protection of Buildings” and TS EN 54.

Review local municipal guidelines.
Design the project in accordance with these regulations.

3. Identifying High-Risk Areas:
Pinpoint areas where fires are more likely to start:

Kitchens: May require smoke and heat detectors due to high heat and flammable gases.
Electrical panel rooms: Need suitable detectors to address short-circuit risks.
Storage areas: Smoke and heat detectors are critical where flammable materials are stored.

4. Choosing the Right Detector Types:
Different areas require different types of detectors:

Smoke detectors: For offices, corridors, and common areas.
Heat detectors: Preferred in kitchens and industrial areas.
Combination detectors: For areas needing dual smoke and heat detection.
Flame detectors: Suitable for high-ceiling storage spaces or open areas.

5. Planning Detector Placement:

Smoke detectors: Typically spaced 10-12 meters apart.
Heat detectors: Placed about 5-7 meters apart.
Corridors: Detectors should be no more than 15 meters apart.
Ceiling height: Adjust detection capabilities according to ceiling height.

6. Determining Cable Routes and Power Sources:
For a reliable, uninterrupted fire alarm system:

Use fire-resistant cables.
Ensure backup power sources are sufficient in case of power outages.
Route cables through protected channels to minimize fire and electrical risks.

7. Positioning Alarm Devices:
Install audible and visual alarm devices so that:

All areas can easily hear and see alerts.
Sound levels are at least 65 dB.
Visual alarms are placed at strategic locations.

8. Integrating with Building Automation Systems:
Connect the fire alarm system to:

Ventilation and smoke evacuation systems.
Emergency lighting systems.
Sprinkler systems.

9. Preparing the Survey Report:
After the survey, compile a report that includes:

Detector placement plans.
A list of required equipment.
Cable types and power needs.
Area risk analysis.
Details on compliance with standards.

Common Mistakes During Surveys:

Failing to identify all high-risk areas.
Not adjusting detectors for ceiling heights.
Using non-fire-resistant cabling.
Placing alarm devices in non-strategic locations.
Designing systems that do not meet regulatory standards.

Conclusion:
The site survey is one of the most critical steps in determining the effectiveness of fire alarm systems. A proper survey not only ensures legal compliance but also provides a foundation for a safe and reliable fire alarm installation. By conducting a professional survey, you lay the groundwork for a system that protects both lives and property.