Door Fan Test Services
The effectiveness of a gas fire suppression system depends on the airtight integrity of the protected enclosure.
Any leakage in the enclosure will cause the suppression agent concentration to drop, significantly reducing the system’s extinguishing performance.
Shanghai OKRO Construction Technology Co., Ltd. (OKRO) offers professional Gas Fire Suppression System Door Fan Test Services, ensuring the protected space maintains sufficient agent concentration and hold time during a fire event, providing comprehensive fire protection for critical facilities such as energy storage systems, IT rooms, data centers, and industrial control rooms.
Scope of Service
Battery Energy Storage Systems (BESS) and battery rooms
Power and communication control rooms
IT server rooms and network centers
Industrial cleanrooms
Data center white space / gray space
Archive storage rooms and valuable record vaults
Applicable Standards
Testing is conducted in strict accordance with the following international and national standards:
- NFPA 2001: Clean Agent Fire Extinguishing Systems
- FM Global Property Loss Prevention Data Sheet 5-32: Enclosure Integrity Testing
- ISO 14520: Gaseous Fire-Extinguishing Systems – Physical Properties and Design
- BS EN 15004: European Standard for Gas Fire Suppression Systems
- GB 50263-2007: Code for installation and acceptance of gas extinguishing systems
Key Advantages
- Professional Air-Tightness Testing Equipment
Utilizes a high-precision Door Fan system with multi-channel sensors to monitor pressure differentials and airflow changes in real time. - Standardized Testing Procedures
Executed in accordance with NFPA, FM, and GB standards to ensure results that are scientific, accurate, and fully traceable. - Comprehensive Testing Report
Delivers a detailed report including leakage volume, leakage rate, and agent hold-time curves—fully meeting the technical requirements of owners, supervisors, insurance companies, and fire safety authorities.
Test Procedure
1Preparation Stage
- Confirm the protected room volume, equipment layout, and system parameters
- Seal doors, windows, and penetration points; shut down the HVAC system
- Record ambient conditions such as temperature, humidity, and air pressure
2Simulated Airtightness Test
Performed using both positive and negative pressure methods (Door Fan Test):
- Test equipment creates controlled airflow at the doorway to measure leakage rate and pressure differential
- Calculate suppression agent hold time
- Analyze the sealing performance of the protected room through simulated pressure-release curves
3Leak Point Detection
- Use smoke generators and infrared detectors to quickly locate leakage areas
- Photograph and mark the coordinates of all detected openings and gaps
4Report & Remediation
A comprehensive test report is issued, including:
- Room volume and design parameters
- Leakage rate (m³/h) and leakage percentage (%/min)
- Suppression agent hold time
- Leak point map and corrective recommendations
- The report can be used for system acceptance and insurance documentation
Maintenance Recommendation
To ensure long-term system reliability, the following practices are recommended:
- Initial Testing: Perform an airtightness performance test during system commissioning and before project handover to verify that the protected enclosure meets design requirements.
- Annual Testing: Conduct annual re-testing to confirm that the airtightness level remains stable over time.
- Post-Modification Testing: Re-test immediately after any structural changes, door or window replacements, firestop modifications, or piping alterations to ensure airtight integrity is fully maintained.
Regular airtightness testing is essential for ensuring the long-term effectiveness of any fire suppression system.
With professional expertise and rigorous standards, OKRO delivers accurate and reliable test results, ensuring your suppression system responds precisely, discharges fully, and performs effectively when it matters most.
Safety is more than installation — it is verification.
Choose OKRO to keep your fire protection system operating at its highest level of performance, every day.
