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Method Statement For Testing & Commissioning Of Fire Fighting Sprinkler System

Instruments & Tools Required for Testing & Commissioning Of Firefighting Sprinkler System

  • Valve operating keys.
  • Calibrated Pressure Gauges
  • Heat gun
  • Torque tester
  • Flexible Hose
  • Drums 300 liter to 500 liter

Testing & Commissioning Sequence

Pre-Commissioning Phase

Before commissioning the system the following shall be ensured.

  • The Installation and pressure testing of the pipes are completed.
  • The installations of Zone Control Valves, main line Isolation Valve and other accessories are completed.
  • Cabling and interface connection to Zone Control Valve and main fire alarm panel is completed.
  • Termination of Zone Control Valves and main fire alarm panel is completed.
  • Confirm that Alarm check valve and all the accessories are ready for putting the system in service.
  • Ensure that all the sprinklers are properly installed and free from obstructions.
  • Ensure that all System equipments and devices are properly identified by tags / labels.
  • Flushing has been done.

Fire Fighting Sprinkler System method statement for Testing & Commissioning

Fire Fighting System Testing & Commissioning Phase

  • Complete installation of sprinklers as per the approved drawings & method statement of installation.
  • Complete pressure testing for all the floors & the risers as per method statement for testing, and hand over all pressure testing to consultant & contractor.
  • Commission the fire pump set as per pump commissioning method statement.
  • Fill the system with water and pressurize the system to match the souk pressure cut off using a manual and electric pump to avoid triggering any alarm fault at the souk when opening the main valve.
  • Coordination with the Facility management of the Souk where the Fire Pump is located for the sprinkler has to be established prior to opening of the Main Valve.
  • PRV Settings for the PRV station to be agreed prior to commissioning.
  • Close all the zone control valves in all the zones in the building.
  • Gradually Open the Main gate valve.
  • Check visually for any leak for a period of 2 hours.
  • Start opening the zone control valves floor by floor and check each floor visually for any leak for a period of 2 hours (This includes the tenant/retail area).
  • Check Status of Flow switch in the Fire Alarm Control Panel of each Zone Control Valve Assembly during opening of the Zone Control Valve.
  • After pressurizing the whole system, keep it for 24 hours under observation.
  • Record the pressure indicated in each zone control valve.
  • Open gradually / slowly the drain valve of the zone control valves floor by floor. Alarm system should indicate fire signal in the building.
  • Record the pressure indicated in each zone control valve.
  • For Retail/Tenant area repeat step “n” but make sure a flexible hose is connected and directed to a drum or nearest floor drain.
  • Close the zone control valves floor by floor and Alarm system should give fault signal. Same will be done with tenant/retail.

Setting of PRV at the PRV Station

  • Check if the Main Valve is Fully Open.
  • Check the Pressure Gauge indicated in the Inlet of PRV Station and record the reading at the
    test sheet provided.
  • Open the PRV and check the Pressure gauge installed in the outlet of the PRV.
  • If the pressure is not as per the required pressure adjust the PRV to satisfy the requirement and record the reading in the test sheet provided.
  • Repeat steps a-d to other remaining PRV station.
Inspection & Test Plan During Commissioning
  • The Commissioning Engineer should verify that the CxT who is responsible for Testing & Commissioning is familiar with this Method Statement and is issued with copies of the inspection checklists and test plans.
  • The CxT Engineer should satisfy the procedures provided by Commissioning Engineer inspections to ensure the Commissioning of the Fire Fighting System testing meets the specified Engineering requirements and approved drawings.
  • As part of the assessment, the CxT Inspection Procedures must ensure a quantitative or qualitative acceptance criteria for determining the prescribed activities have been accomplished satisfactorily.
  • The CxT should verify any as-built record of Fire Fighting System testing and confirm that the information meets the project requirements.
  • Request for Work Inspection Request (WIR) shall be submitted by Commissioning Engineer to QA/QC Department for verification and inspections.
  • Commissioning Engineer will forward WIR for inspection and approval in accordance with Commissioning Plan.
  • Readable stamped approved Method of Statement to be available during installation and inspection.
  • All the instruments engaged for testing shall have valid calibration and certificate should be furnished.
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