Method Statement Title: Installation of Fire Water Pumps

Method Statement Title: Installation of Fire Water Pumps

1. Scope

1. This method statement applies to installation of Firewater pumps as per Specification Section 15500 manufacturers instructions and NFPA-20.

Note

            A separate method statement Ref. ETA/MS/P-015 will be submitted for Start-up & Commissioning of Fire Water Pumps.

• Purpose

• Purpose of this method statement is to outline the method of storage, handling and installation of firewater pumps, valve package and controls.

• Material

• Pump and motor assembled on a common base frame, coupled using suitable coupling arrangement by the manufacturer.

• OS&Y valves, NRV, flexible connectors and piping accessories as per approved submittals.

• Pump foundation as per approved drawings.

4.0       Applicable Location

                4.1       West Tower – W2 Basement Floor.

5.0       Method

5.1       Receiving

5.1.1    When received at site, each pump, valves, air vent, pressure relief valve and water meter shall be checked for quantities, Model Nos., physical damages etc. and notify supplier of any discrepancies for suitable rectification or replacement.

• Valves shall be segregated as per sizes/models and stored on racks within a covered store.

5.1.3    Any items found damaged or not found suitable as per the project requirements shall be quarantined.  Non-compliant material shall be clearly marked and stored separately to prevent any inadvertent use until returned to vendor.

• Storage

• Pump shall be stored on a flat surface in well-ventilated storage area.

• Inlet and outlet flange blanks shall not be removed until ready for connection to pipe work.

• Manufacturer’s instructions shall be strictly followed as applicable.

• If the pumps are stored for longer periods the shaft shall be periodically rotated and lubricated, if required.

• The stored motor should be inspected periodically for obvious conditions such as standing water, parts theft, excess dirt buildup or any other abnormal condition.

• Storekeeper will be responsible for proper storage and maintenance of records, as required.

• Preparation

• The foundations designed to meet the vibration and sound control requirements shall be provided by Main contractor.

• Check and ensure that the shop drawings used are latest and approved for construction.

• ETA will co-ordinate the location of foundation as per approved shop drawings.

• The foundation surface shall be flat and level and smoothly finished top surface.

• Check the piping support locations and cable tray routing locations in co-ordination with pump and piping layout and ensure they are not obstructing the space around pump.

• Ensure easy access and sufficient clearance for servicing and maintenance i.e for replacement of pump, motor.

• Installation

               5.4.1    Electric Driven Pumpset (Main & Jockey)

5.4.1.1          Mark the locations of the pump base frame and hole locations.

5.4.1.2          Drill the suitable size holes in the foundations.

5.4.1.3          The pump and motor are assembled on the base frame by suitable flexible coupling arrangement.  Shift the pumps to the place of installation in safe manner.  Use hand trolley / folk-lift/ crane as applicable/ required as per site conditions.

5.4.1.4          Check and ensure free rotation of the shaft.

5.4.1.5          Position the pump frame assembly on the foundation and fix the anchor fasteners.

•          Water level the pump assembly by placing the shim plates below the base frame as required.  Gap between motor and pumps, after pump installation shall be rechecked by the pump supplier before testing.

5.4.2    Ensure proper coupling guards are provided.

5.4.3    Complete the piping and valve package installation as per approved drawings.  Remove the end caps fixed on the inlet flange.

• Install the electrical control panel and power connections as per approved drawings.

• Incoming and outgoing cables to be insulation resistance/continuity tested.

• Provide earth wiring as per approved drawings/manufacturers instruction.

• Follow the manufacturers instructions while installing the pump.

• After completion of the installation, it shall be checked and certified by the supplier/manufacturer.

• Inspection

6.1         After completion and pump installation and piping connections, the same shall be checked and certified by the pump supplier.

• Request for Inspection’ shall be raised for NMX and Consultants inspection.

• Safety

• All safety precautions shall be followed as per established project safety plan and procedure.

• Only experienced and skilled technicians shall be engaged for carrying out pump installation work.

• The people involved in the installation shall use PPE such as safety helmets, safety shoes, harness, gloves, coverall, goggle,  etc. as required.

• Safety officer shall check and ensure that all safety precautions are followed.

• Safety officer shall check and ensure that all scaffolding and ladders use at site are having duly signed tags.

• References

• Manufacturers instructions

• Approved fire water pump submittal.

• Approved shop drawings.

• Specification section 15500

• NFPA 20

• Records

• Work Inspection Request dully signed by the NMX and Consultant.

• Pump installation checklist.

  9.3         Installation certificate from manufacturer

1. Attachment

10.1        Schedule of Fire Water Pumps

         10.2        Installation checklist