Method Statement For Testing & Commissioning Of Sump Pumps

This method statement covers the commissioning of Sump Pumps.  The objective is to check that the installation is correct and as per the manufacturer’s recommendations, to prove the pump volumetric performance and to test the alarm and interface signals to the BMS.

Commissioning engineer will be responsible for the day to day activities on site, for the test report and design information approval and the onsite testing.

Health and Safety procedures by the main contractor and by mechanical contractor will be implemented for this job. The responsible safety officer as per mechanical contractor procedure will conduct a routine safety inspection in conjunction with the main contractor.

All instruments used, will carry current calibration certificates/certificates of conformance to the tolerances specified in the referenced standards. Instruments will be properly maintained and protected against damage.

Calibration periods for all instruments are as recommended by the instrument manufacturers and are in line with the requirements of the Commissioning Specialists Association. Certificates will be available for presentation prior to commencement of the works.

Before commencing the commissioning works, the following information/items will be made available:

Sumps are complete and pits cleaned.

Check the discharge pipe work is complete and adequately supported.

Sump pump installation is complete inspected and signed off by the engineer and main contractor.

Power supply cables to the pump panels have been tested.

Power is available at the sump pumps control panel.

Full set of up-to-date plant schedules which include details of pump performance curves, design volume & system resistance and electrical drive data.

Pre-commissioning checks prior to start-up of Sump Pump

The main objective here is to minimize the risks of injury and damage to personnel and equipment prior to the running of the pumps.

The  installation will  be  inspected and  signed  off  by  Engineer prior  to commissioning.

Installation checks will be made and recorded on the Installation Checklist attached with this document. The checks made comprise of the following:

• Installation is in accordance with the shop drawings and that the discharge pipe work is complete and correctly supported.
• All sumps are clean and free of obstruction.
• The float switches are installed in accordance with the manufacturers’ recommendations.

Mechanical Checks

Check and inspect the installation of Sump Pump is complete; verify the installation as per approved drawings.

Verify compliance to the attached manufacturer’s installation instructions.

Obtain installation certification from manufacturer or their authorized representative.

Check and ensure adequate clearance available for service and maintenance of pumps and motors.

Check the installation is coordinated with other services.

Ensure the shipping bolts / chambers are removed.

Check all nuts, bolts, screws, fasteners etc., are fixed and tightened as required.

Check the alignment is completed as per manufacturer’s instructions (where applicable).

Check and ensure the safety guards are in place and secure.

Rotate the pump manually and ensure free and smooth rotation.

Ensure the pumps are cleaned prior to start-up and all identification labels and tags are in place.

Electrical Checks

• Check all power cabling and control wiring is completed and dressed neatly.
• Check the power isolator is fixed close to the pump motor for emergency stop and power isolation.
• Check all terminations are completed and tightened as required.
• Check the grounding connections are completed and tightened as required.
• Ensure the overload protections are set correctly as per the pump motor load current.
• Ensure all identification tags and labeling works are complete.

Sump Pump Start-up, Testing and Commissioning Procedure

• Check the line voltage and phase rotation before energizing the power.
• Switch ON the power and start the pump and check the rotation is in the correct direction.
• Immediately on start-up, check for any abnormal noise and vibration. Rectify as / if required Consult manufacturer if required.
• Observe for the correct operation of motor, pump and drive system.
• Measure the current drawn (amperage) by the pump motor and record the same.
• Record all pump and motor nameplate data in the commissioning format.
• Ensure compliance to all manufacturers’s commissioning instructions, as applicable.
• Set and record level switch settings.
• Set and record over load settings.
• Check guide rail mechanism for proper functioning.
• Check operation of all panel indication lamps simulating alarm.
• Check operations of auto changeover of duty pump on alarm.
• Check cyclic changeover of duty pump.
• Check operation of low level cut out
• Check operation of high levels witch/Alarm.
• Check the sump pump sets are equipped with 4 nos of float switches and they are connected to control panel.
• The longest float switch for dry run protection. The water level becomes this float switch and pumps will be run in auto & hand mode.
• If the water level reaches to 2″‘ float switch, then first pump will start running.
• If again water level increases to 3″ float level switch 2″ pump will start running.
• If the water reaches to the level of the 4th switch (top) then the alarm will start for indication of high water level.

BMS Interface Procedure

The BMS signals are simulated and the change in status of the output signals to the BMS is tested with a continuity tester on the BMS terminal rail connection.

The BMS interface will be demonstrated per approved point schedule.

Demonstration Procedures

After successful testing and commissioning of sump pump, the results will be recorded in the commissioning test reports contained within this document.

The testing and commissioning of the sump pump will be 100% verified and upon completion of this, offered for inspection, approval and acceptance from consultant.

 

Inspection

 Work Inspection Request shall be raised for Consultant’s inspection and sign off.

You Can Download Detailed Method Statement for Sump Pump Testing and Commissioning With All Form, ITP and Risk Assessment