Method Statement Title: Installation of Chilled Water Pumps

Method Statement Title: Installation of Chilled Water Pumps

1. Scope

1. This method statement applies to installation of chilled water pumps and associated valve package.

• Purpose

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

• Material

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

• Isolation valves, strainers, NRV, flexible connectors and piping accessories as per approved submittals.

• Pump foundation as per approved drawings.

• Method

• Receiving

• When received at site, each pump shall be checked for quantities, model number, physical damages, etc., and notify supplier of any discrepancies for suitable rectification or replacement.

• Valves and other accessories shall be checked for size, model and quantity. Receiving inspection shall be conducted by the storekeeper, engineer and QC engineer, which shall be documented.

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

• 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

• Upon completion of receiving QC inspection, the pumps will be segregated model/size wise and stored accordingly for easy retrieval.

• Pumps shall be stored on a flat surface in well ventilated and covered storage area.

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

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

• If the pumps are stored for longer periods the shaft shall be periodically rotated.

• Preparation

• The foundations designed to meet the vibration and sound control requirements shall be provided my Main Contractor. Inertia bases will be supplied along with vibration isolators.

• 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.

• Co-ordinate with the main contractor to ensure that the foundations/concrete filling to inertia bases made as per approved shop drawings.

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

• Check co-ordination with other services prior to the installation.

• 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 accesses and sufficient clearance for servicing and maintenance i.e, for replacement of pump, motor, cleaning of strainer, valves etc.

• Installation

• Mark the locations of the pump base frame.

• Install the inertia base/pumps as per attached Annexure-I.

• Shift the pumps to the place of installation in safe manner. Use hand trolley/folk lift/crane as applicable/required as per site conditions.

• Alignment of coupling arrangement between motor and pumps, after pump installation shall be rechecked by the pump supplier before testing.

• Ensure proper coupling guards are provided, where applicable.

• Complete the piping and valve package installation as per approved drawings. Remove the ends caps fixed on the inlet and outlet flanges.

• Install the electrical power connections as per approved drawings and test for continuity.

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

• Follow the manufacturers instructions while installing the pump.

• Inspection

• After completion of pump installation and piping connections, QC inspection shall be carried out as per pump installation check list.

• “Work Inspection Request” shall be raised for 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 involve din the installation shall use PPE such as safety helmets, safety shoes, harness, gloves, 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 used at site are having duly signed tags.

• References

• Manufacturers catalogue.

• Approved chilled water pump submittals.

• Shop drawings.

• Specification Section 15700.

• Records

• `Work Inspection Request’ duly signed by the Consultant’s for installation.

8.2       Pump installation check list.