We all know that in any fire protection system, the fire pump is crucial for ensuring sufficient water flow and pressure during an emergency. Hence, regular testing is important for maintaining the performance and reliability of fire pumps, meeting compliance requirements, and safeguarding building occupants. But what does a standard fire pump testing process look like and what are primary tests involved to evaluate the pump’s capacity and endurance?
Importance of Fire Pump Testing
Fire pump testing is not only a regulatory requirement but also a necessary process to confirm that the pump can reliably support the fire suppression system. Properly tested fire pumps can respond effectively in emergency situations, reducing the risk of failure and providing critical water flow when needed most.
Key Fire Pump Tests
Each fire pump generally undergoes two primary types of tests to assess both its initial and long-term performance:
1. Performance Test
The performance test checks if the fire pump can reach its required flow rate and system pressure. Testing is done against AS2941 standards, ensuring the pump can handle the demands of a real fire emergency.
Test Requirements:
- The pump must reach its “duty flow rate” at the designated system pressure.
- The pump is required to perform at 130% of its duty flow, maintaining at least 80% of the system pressure.
- Flow rates are measured and recorded at 0%, 30%, 60%, 80%, and 120% of the duty flow to create a pump performance curve.
- The test is conducted using a test rig with a flow meter and a pressure-adjusting butterfly valve to simulate system conditions.
Recorded Measurements:
- For Diesel Engine Pumps: Suction pressure, engine coolant and oil temperature, engine speed (rpm), and water flow and pressure (for heat exchanger cooled engines).
- For Electric Motor Pumps: Suction pressure, tank water temperature, motor voltage and current, and motor speed (rpm).
2. Endurance Test
The endurance test evaluates the pump’s ability to sustain high performance over an extended period, typically 130% of its duty flow rate.
Testing Duration:
- Diesel engine-driven pumps are tested for 90 minutes.
- Electric motor-driven pumps are tested for 15 minutes.
Recorded Measurements:
- Diesel Pumps: Parameters such as engine coolant and oil temperature, engine speed, and pump bearing temperatures are recorded every 15 minutes to monitor the pump’s operation under stress.
- Electric Pumps: Motor voltage and current across phases and pump bearing temperatures are recorded at the 15-minute mark.
The Testing Facility and Documentation
Each fire pump should ideally be tested in a dedicated facility that ensures controlled conditions and accurate measurement. For instance, Global Pumps tests all its fire pumps in a purpose-built facility in Australia, aligning with national standards and ensuring that pumps are ready for deployment.
Upon test completion, results are organized into detailed tables and shared with clients, providing transparency and assurance that the pump meets all necessary standards.
SAFE: Fire Pump Testing and Service Experts in QLD
Fire pump testing is only one element of a comprehensive fire safety plan. Integrating the fire pump with the overall fire protection system requires expert design and careful installation. With consistent testing and professional oversight, building owners and managers can ensure that their fire pump system will perform reliably under emergency conditions.
For expert guidance on fire pump selection, testing, and installation, reach out to our experts at SAFE. Our team comprises highly skilled technicians with extensive experience in fire pump maintenance and servicing. We understand the importance of reliability in fire protection systems and are committed to delivering prompt and efficient servicing solutions. And with a deep understanding of State and QBCC regulations, we ensure that all servicing activities are conducted in strict accordance with industry standards.
