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Method Statement for Installation of Water Pumps
In this article today we will talk about the Method Statement for Installation of Water Pumps | Work Method Statement pdf | Method Statement for Installation of Pumps | Water Pump Installation | Construction Water Pump | Sump Pump Installation | Centrifugal Pump Installation | Vertical In-Line Pump Installation | Horizontal Base Mounted Pumps Installation
Method Statement for Installation of Water Pumps:
1. Purpose:
The purpose of generating this method statement is to define the procedure for Installation of Pumps through the guidelines contained here in to ensure that the job execution complies with the requirements where applicable in the project.
2. Scope of Work:
This method statement covers all processes related to Installation of the mentioned system as per project specification, Manufacturer recommendations, and approved drawings.
3. Equipments:
The Following tools shall be arranged before starting the job.
- Tool Box Work Method Statement pdf
- Mini Hacksaw Frame with Blades
- Measuring Tape
- Adjustable wrench
- Hammer
- Special wrenches
- Torque Ratchet
- Screw Driver
- Laser Indicator
- Marker / Chalk Line Work Method Statement pdf
Safety requirements tools such as safety shoes, safety helmet, safety glasses, fluorescent vest, and safety gloves to ensure maximum ability of safe work and dust mask when require Work Method Statement pdf
4. Pump Installation Procedure:
Pre-installation procedure Plumbing Pumps:
- Working area shall be released for MEP works by the contractor.
- The contractor shall provide suitable routing and access to installation area.
- Safe and protective storage areas to be allocated at site in coordination with the Contractor. Work Method Statement pdf
- Equipment shall be off-loaded from the transportation using the vendor recommended lifting points and approved techniques.
- Equipment to be checked to ensure that there are no discrepancies and no mechanical damage. Work Method Statement pdf
Equipment Installation:
- Pumps with motors smaller than 11 kW can be installed in horizontal or vertical pipework (Fig. 15). Pumps with motors of 11 kW and up may only be installed in horizontal pipes with the motor in vertical position (Fig. 16).
- The motor must never point downwards. Install the pumps in such a way that strain from the pipe work is not transferred to the pump housing. Pumps with motors smaller than 11 kW may be suspended direct in the pipes, provided the pipework can support the pump. If not, install the pump on amounting bracket or base plate. Pumps with motors of 11 kW and up may only be installed in horizontal pipes with the motor placed in vertical position. Sump Pump Installation
- Always install the pump on an even and rigid foundation.
- Place the pump in such a way that sufficient cooling is ensured. Make sure that the temperature of the cooling air does not exceed +50 °C. Keep the motor cooling fins, holes in fan cover and fan blades clean. Make sure the frequency for the motor is at least 6Hz (12 % of maximum speed).
- Condensation cover for TPE pumps. When installing TPE pumps outdoors, provide the motor with a suitable cover to avoid condensation on the electronic components and to protect the pump and motor against the direct effects of the elements. When mounting the condensation cover on top of the motor, make sure to leave enough space for the air to cool the motor. Sump Pump Installation
- The nominal flange diameter away from the pump on the suction as well as on the discharge side. This will prevent the development of turbulence in the expansion joints, resulting in better suction conditions and a minimum pressure loss on the pressure side.
- Before installation, all locations, elevations and orientations of the equipment foundations and support structures shall be checked and verified in accordance with installation drawings and specifications.
- Anchor bolts shall be plumb and placed as per approved drawings.
- Plate inserts shall be placed as specified in installation drawings.
- Data lines of levels and/or axis shall be marked/ painted on the foundation.
- Where necessary, rigging studies shall be made prior to installation/erection of equipment. Sump Pump Installation
- The levelling shall be measured in the direction of the shaft at right angles to the shaft.
- Adjustments shall be made by removing and inserting liners and wedges. Jack bolts shall be used when specified.
- The maximum out-of-level tolerance shall be within specified limits.
- After completion, nuts and locknuts (if required) of the anchor bolts shall be tightened.
- After completion of levelling and release, grouting for the baseplates shall be done. The
- Top surface of the foundation shall be cleaned; all foreign matter shall be removed by suitable means.
- Carry out static checks on electrical wiring settings of all control and safety devices to ensure conditions are safe prior to start up and running.
- Align and shim level units on prepared bases.
- Fix all units to bases.
- Ensure adequate space is available around the units to allow inspection and maintenance of all components. Sump Pump Installation
CENTRIFUGAL PUMPS AND MATERIAL:
- Pumps shall be constant speed centrifugal types as shown on the drawings and described in the schedules. Sump Pump Installation
- All pump motors shall be totally enclosed fan cooled to LP54 squirrel cage type with Class F insulation.
- Pumps and motors shall be rated to operate continuously with a maximum ambient air Temperature of 50°C.
- Direct coupled pumps shall be of the end suction type.
- Centrifugal pumps shall have bronze or stainless steel impellers with stainless steel drive Shafts. Impeller casings shall be of cast iron and shall be provided with pressure tapings on suction and discharge. Sump Pump Installation
- Impeller arrangements shall be such that they can Pipework connections or disturbing the baseplate.
- The pumps shall be fitted with mechanical seals. They shall be replacing stripping down the bearing system.
- All components used in the construction of pumps shall be selected to
- Working and test pressure. Water Pump Installation
- Pump pipework connections shall be flanged to BS 4504.
COLD WATER BOOSTER SETS:
- The design, construction, materials and finishes or all units locations, climatic and operating conditions in this specification.
- The units shall be one piece, packaged fully factory assembled, piped, wired and complete with operating and safety controls and all customary auxiliaries deemed necessary by the manufacturer for the safe, controlled automatic operation of the equipment. Water Pump Installation
- Packaged unit shall comprise: –
- Variable speed pumps
- Valves and fittings
- System pipework connections.
- Controls and instrumentation.
- Provide close coupled variable speed pumps as schedules fitted with self-adjusting mechanical seals.
- Motors shall be TEFC to IP 54 squirrel cage type with class ‘F’ insulation.
- For potable water applications all wetted parts shall be type 304 stainless steel with type 316 stainless steel impellers. Construction Water Pump
VALVES AND FITTINGS:
- Provide the following valves and fittings:
- Pump isolating gate valves.
- Non return valves. Construction Water Pump
BASE FRAME:
- Mount all components on to a mild steel angle and hollow section frame.
- Prime and paint base with protective undercoat and hammer finish gloss.
VIBRATION ISOLATORS:
- Mount unit on anti-vibration isolators. Construction Water Pump
- Provide non-ferrous braided flexible pressure hose connections in interfaces with pipework system. Construction Water Pump
- Final electrical connections to be made with armored flexible conduit.
SUMP PUMPS:
- Sump pumps shall be duty / standby to the sizes shown on the project drains or Schedules. Construction Water Pump
- Sump pumps shall be of the fully submersible type. Each pump shall be complete with non-return valve and isolating gate valve on the pump discharge. These valves shall be fitted. Above the normal highest liquid level and in a location accessible from the surface.
- Pumps shall be capable of being removed from the sump without any dismantling and without the need for personnel to enter the sump.
- Pumps shall be supplied complete with control panel for automatic operation and auto changeover of duty / standby pump. Control panel shall have visual/audible alarm and volt free contacts for connection to BMS where required. Construction Water Pump
Installation:
- Carry out static checks on electrical wiring settings of all control and safety devices to ensure conditions are safe prior to start up and running.
- Align and shim level units on prepared bases.
- Fix all units to bases. Horizontal Base Mounted Pumps Installation
- Ensure adequate space is available around the units to allow inspection and maintenance of all components.
Fire Protection Pumps:
- Pumps shall be stored within well-fitted storage containers with the open ends sealed with manufactured plugs to prevent the ingress of dirt.
- Protect fire pumps and components form physical damage including the effects of weather, water and construction debris. Horizontal Base Mounted Pumps Installation
- Move the assembled Pump set in the common base frame to the Pump Room. Fork lift will be used for shifting the pump sets to the Pump Room.
- Base mounted pumps shall be installed on concrete bases with suitable anti-vibration isolators.
- All pumps shall be installed as indicated on the drawings complete with isolating valves, non-return valves and flexible connections.
- Pumps shall be installed fully in accordance with the manufacturer’s recommendations, with particular regard to venting and permanent lubrication of bearings.
- Installation shall be carried out in accordance with NFPA 20; the manufacturer instructions and as specified herein.
- Mark the location of Anchor Bolts as per the Approved Drawings. Only approved Anchor Bolts shall be used. Rubber pad shall be provided between the plinth & base frame for vibration isolation. Horizontal Base Mounted Pumps Installation
- After the anchor bolt holes have been located, check to ensure that they match pump bolting position. Then fix the anchor bolts as per manufacturer’s recommendations.
- When anchor bolts are inserted in the bolt holes on the plinth, position the pump set on the plinth with rubber pads in between. Chain block of adequate capacity will be used for the same.
- Connect the suction & discharge piping to the pump set header as per the approved shop drawings.
- Connect the piping between the pump headers to the pressure switches as per the manufacturer’s recommendations.
- Connect Exhaust pipe from the diesel engine up to the discharge point as per the approved shop drawings.
- Complete electrical & BMS connections to the control panel & from the control panel to the pumps as applicable to the project specifications & manufacturer’s recommendations.
- After work completion, inspection will be raised for consultant’s approval & recommendations. Horizontal Base Mounted Pumps Installation
- Base mounted pumps shall be installed on concrete bases with suitable anti-vibration isolators.
- All pumps shall be installed as indicated on the drawings complete with isolating valves, non-return valves and flexible connections.
- Pumps shall be installed fully in accordance with the manufacturer’s recommendations, with particular regard to venting and permanent lubrication of bearings.
- Installation shall be carried out in accordance with NFPA 20; the manufacturer instructions and as specified herein. Horizontal Base Mounted Pumps Installation
VERTICAL IN-LINE PUMP:
- Casting: Cast or ductile iron, with suction and discharge gauge ports, casing wear ring, seal flush connection, drain plug, flanged suction and discharge.
- Impeller: Bronze, fully enclosed, keyed directly to motor shaft.
- Shaft: Solid alloy steel with bronze sleeve. Vertical In-Line Pump Installation
- Seal: Packing gland with minimum four rings graphite impregnated packing and bronze lantern rings, 110 degrees C maximum continuous operating temperature.
- Performance: As indicated in the schedules and drawings.
HORIZONTAL BASE MOUNTED PUMPS:
- Casing: Cast iron, with suction and discharge gauge ports, renewable bronze casing wearing rings, seal flush connection. Drain plug, flanged suction and discharge.
- Impeller: Bronze double suction fully enclosed, balanced and keyed to shaft.
- Bearings: Grease lubricated ball bearings, replaceable without opening casing.
- Shaft: Alloy steel with replaceable bronze shaft sleeve. Vertical In-Line Pump Installation
FIRE PUMP ACCESSORIES:
- Eccentric suction reducer and OS& Y gate or butterfly valve on suction side of pump.
- Concentric increaser and check valve in pump discharge and OS&Y gate or butterfly valve on system side of check valve Vertical In-Line Pump Installation
- Fire pump bypass fitted with OS&Y gate or butterfly valves and check valve.
- Main relief valve: UL 1478, and enclosed type waste cone.
- Suction pressure gauge, 110 mm diameter dial with snubber, valve cock and lever handle.
- Discharge pressure gauge mounted on board attached to pump, with snubber, valve cock and lever handle.
- Casing 20 mm relief valve. Vertical In-Line Pump Installation
- Float operated 25 mm automatic air release valve.
- Flow metering system for closed loop testing.
- All required acoustics listed in NFPA-20 Centrifugal Pump Installation
Chilled Water Pump:
- Installations shall be such that motors and pumps can be separately aligned prior to initial start Before initial operation drive couplings shall be checked for alignment using a clock gauge and certificate of alignment issued to the Engineer.
- Ensure that the work area is clean and safe for carrying out the activities.
- Prior to start of work, it shall be ensure that relevant shop drawings and coordination drawings are available for construction.
- It shall be ensuring that the material issued is as per the approved material submittal.
- The following procedure shall be followed for the installation of Chilled water Pumps.
- Ensure that the installation of Chilled water Pumps is carried out in accordance with manufacturer’s installation recommendations and specification.
- Prior to start of installation, refer to the approved shop drawing related to the area of installation and ensure that required material is available at site as per approved material submittals. Vertical In-Line Pump Installation
- After inspecting the work area, ensure that it is totally ready for installation. Then the required equipment shall be moved to the place of installation.
- Check the equipment weight to ensure the rigging equipment can handle weight safely.
- Before installing the Chilled water Pump, check whether proper space is available for servicing. If there are any previously installed services near the same area, they must be shifted to the side of the Chilled water Pump for easy future maintenance.
- Check Pump’s foundation. The dimensions, location, orientation and the level shall be as per manufacturer’s recommendations. Centrifugal Pump Installation
- Chilled water Pumps shall be installed and positioned as shown on the approved shop drawings and level the pumps by using spirit level.
- After levelling the pumps, tighten the bolts at the base of the pumps.
- Ensure proper space for valves and piping for future maintenance shall be provided before installing the pumps.
- Ensure that pumps and motors are properly installed with no pipe strain transmitted to the pump casing. Centrifugal Pump Installation
- After completion of pumps installation, inspection request will be raised for consultant inspection.
- Installation of Hydronic piping, valves and insulation of piping shall be done as per approved method statement and as per approved shop drawings.
- Valve tags and identification signs shall be provided as per requirements.
CENTRIFUGAL PUMPS:
- Primary chiller pumps shall be based mounted direct coupled end suction constant speed centrifugal types located as shown on the drawings and described in the schedules.
- Secondary chilled water circulating pumps shall be of the base-mounted direct coupled end suctions variable speed centrifugal type with motor and pump body mounted on a cast iron or mild steel common bed-plate. Centrifugal Pump Installation
- All pump motors shall be totally enclosed fan cooled to I.P. 54 squirrel cage type with Class F insulation.
- Pumps and motors shall be rated to operate continuously with a maximum ambient air temperature of 50°C.
- Direct coupled pumps shall be of the end suction type.
- Centrifugal pumps shall have high-grade gunmetal impellers with stainless steel drive shafts. Impeller casings shall be provided with pressure tappings on suction and discharge. Centrifugal Pump Installation
- Impeller arrangements shall be such that they can be withdrawn without dismantling pipework connections or disturbing the baseplate.
- The pumps shall be. fitted with mechanical seals. They shall be replaceable without stripping down the bearing system. Centrifugal Pump Installation
Repair Work:
- During and after Inspection of pump if found out defective, it shall be repaired as per manufacture recommendation after approval from supervision Consultant.
- After repair work shall monitor and control through installation Procedure. Centrifugal Pump Installation
OTHER POSTS:
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Inspection and Testing Procedure of Drainage Piping after Installation
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Method Statement for Welding Works | Welding Techniques
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Method Statement for Installation of Drainage Piping System
Conclusion:
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