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METHOD STATEMENT FOR COLD WATER
Page No. : Page 1 of 8
BOOSTER PUMPS
METHOD STATEMENT FOR COLD WATER
BOOSTER PUMPS
Project : *insert project name here
Contractor : *insert contractor name here
Document No. : Doc. No. #
Document revision status : 0
0 12-02-2008 Issued for review & Comments
Rev. Date Description Prep’d Chk’d App’d
By By By
*insert contractor name here
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METHOD STATEMENT FOR COLD WATER
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BOOSTER PUMPS
REVISION CONTROL SHEET
REV. NO. DATE PAGE NO. DESCRIPTION RECEPIENT
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METHOD STATEMENT FOR COLD WATER
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BOOSTER PUMPS
TABLE OF CONTENTS
1.0 Purpose…………………………………………………………………………….. 4
2.0 Definitions…………………………………………………………………………. 4
3.0 References………………………………………………………………………… 4
4.0 Scope of work…………………………………………………………………….. 5
5.0 Procedures………………………………………………………………………… 5
5.1 HSE Requirements………………………………………………………. 5
5.2 Equipment………………………………………………………………… 5
5.3 Methodology……………………………………………………………… 6
5.3.1 Installation of booster pumps…………………………. 6
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METHOD STATEMENT FOR COLD WATER
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BOOSTER PUMPS
1.0 Purpose
The purpose of this Method Statement is to describe the Methodology for installation of
booster pumps for cold water and to detail the steps to be taken to meet the HSE
requirements specified for the execution of the *insert project name here.
2.0 Definitions
PROJECT – *insert project name here.
2.1 .
CONTRACTOR – *insert contractor name here.
2.2 DETAILING ENGINEER – *insert contractor name here
2.3 HSE – Health, Safety and Environment;
2.4 PPE – Personal Protective Equipment.
2.5 AFC – Approved for Construction;
3.0 References
3.1 Project Quality Plan – BMC – QCF – QC00;
3.2 Control of Documents Procedure – BMC – QCP – ADM01;
3.3 Document Control – Drawings – BMC – QCP – TECH01;
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METHOD STATEMENT FOR COLD WATER
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BOOSTER PUMPS
3.4 NCR Procedure – BMC – QCP – NCR – QC11;
4.0 Scope of work
4.1 This Method Statement covers the details of following activities:
HSE Requirements;
Installation of booster pumps for cold water.
5.0 Procedures
5.1 HSE Requirements
5.1.1 All personnel working at site shall attend HSE induction / awareness training programs
conducted by the Safety Engineer / Officer.
5.1.2 Nominated supervisor will remain at site during the execution of the work.
5.1.3 Necessary safety precautions shall be implemented for all activities associated with Electrical
such as installation of electrical equipments and identified the materials as per the material
data sheets.
5.1.4 PPE shall be worn at all times.
5.1.5 Safety Officer will remain present at site and will ensure that the provisions made in Project
HSE Plan are complied with.
5.1.6 All necessary precautionary / safety measures such as putting warning tapes shall be taken to
prevent any fall of persons into the pit.
5.2 Equipment
The job will be carried out by manual means. The following are the types of Tools identified
for drainage – plumbing works:
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METHOD STATEMENT FOR COLD WATER
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BOOSTER PUMPS
5.2.1 Hand Tools;
5.2.2 Pipe Chamfering Tools;
5.2.3 Drilling Machine 12” Capacity;
5.2.4 Mechanical Tool Box W / Tools;
5.2.5 Other necessary tools and instruments.
5.2.6 Forklift
5.3 Methodology
5.3.1 Installation of booster pumps for cold water
5.3.1.1. Provide labor, materials, equipment and services, and perform operations required for
complete installation of the Drainage and Vent Systems and related work as indicated on
the drawings.
5.3.1.2. The work shall include, but not be limited to, the following: install centrifugal booster pump
set as shown in the layout for water supply system. The performance ratings of set shall
not be less than those in the schedule. The design shall consist of 2 or 3 multistage
centrifugal vertical pumps assembled on a common base with inter connected piping for
parallel operation. The principal components of the booster and assembly shall be as
detailed herein below: The pumps shall be vertical multistage centrifugal with parts in
stainless steel. The pumps shall be fitted with mechanical seal. The motors shall be totally
enclosed fan cooled direct coupled of standard version which shall dimensionally comply
with IEC and DIN standards. The maximum pumps speed shall be 2900 rpm. The pumps
shall be suitable for operation at 50 Degree C ambient temperature. The motors shall be
continuously rated with class ‘F’ insulation and IP 55 enclosure. A diaphragm type
pressure vessel is incorporated in the system. It shall be constructed in the system. It shall
be constructed of welded steel, minimum 2 mm thickness suitable for the maximum
working pressure. The internal surfaces are coated with non toxic epoxy resin to prevent
contamination. A renewable butyl rubber diaphragm within the vessel shall separate air
and water to avoid air absorption and eliminating the need of an air compressor. The
vessel shall be minimum 500 litters. The interconnected pipe work shall be
Electrophoresis treated steel with flanged ends for suction and discharge connections.
Isolating valves shall be fitted on either side of the unit and a non-return valve shall be
fitted on the suction side of each pump. The non-return valves shall of Cone type. Each
pump shall be fitted with a pressure switch. Also a pressure gauge with gauge cock shall
be fitted at the discharge side of the booster set. The set shall be mounted on a base plate
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METHOD STATEMENT FOR COLD WATER
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BOOSTER PUMPS
and shall be fully tested in the factory prior to dispatch. The base shall be painted steel
with vibration rubber isolations to arrest vibration transmission to the foundation. The base
frame shall be suitably anchored to the concrete foundation. The assembly shall ensure
that only simple connections of section, delivery and electrical power cable are only
required on site to complete the installation. The control panel shall be frame mounted
heavy gauge cubical type. It shall be a splash proof, dust proof enclosure finished in gloss
enamel. The door on the front side shall be lockable. The enclosure shall house the
following. Hand/off/Auto SELECTOR SWITCH FOR EACH PUMP Sequence Circuit
Control Circuit Fuse Terminal Block Main ‘ON’ indicator lamp Pump running indicator lamp
for each pumps Pump ‘Tripped indicator lamp for each pump. Control for operation in
conjunction with float switches for low level control. The float switches shall be installed in
the storage tank. Pressure switch for dry running protection (pressure switch shall be
mounted on the common suction line for pumps).Adjustable time for each pump Low level
protection indicator lam, reset button and adjustable timer Mains isolator fully interlocked
with front cover. Interlock facility with control for operation of the set automatically with
BMS. Alarm circuit with muting button. Contractor shall be responsible for accurately
checking all pumping heads, based upon the actual piping and equipment installation, and
be responsible for furnishing pumps and motors of proper sizes for the actual service,
regardless of those scheduled on plan. Pumps shall be provided from the factory complete
with their electric motors. Piping shall be supported independently to prevent piping weight
or stresses from bearing on or being transmitted to the pump. Pumps shall be located in
accessible locations for ease of repair and maintenance. Pumps shall be constructed of
specified materials and shall have pressure ratings suitable for the service and operating
conditions.
5.3.1.3. Where there is a possibility of problems with corrosion, the appropriate corrosion resistant
materials and assembly methods shall be used including isolation of dissimilar metals
against any electrolytic corrosion. Pump impellers and rotating assemblies shall be
statically and dynamically balanced at the factory. Pump sets shall be provided with
plugged connections for vent, drain, and suction and discharge pressure gauges. Low-
level float switches will be installed to provide power cut-off and prevent the running of the
pumps. Before operating, care shall be taken to ensure that pumps are properly
lubricated, rotating elements, rotate freely, the casings are vented and full of water, the
direction of rotation is correct, the strainers are clean and the suction and discharge valves
are open. Pumps shall operate stably without pulsation, vibration, noise or cavitations
throughout their full capacity range.
5.3.1.4. Pumps shall be selected such as that operating levels of flow and head fall near the point
of maximum efficiency as obtained from the manufacturer's published data. The
horsepower rating of pump motors shall be of such magnitude as to ensure non-
overloading of the motor throughout the capacity range of the pump for the impeller
diameter selected. Electric motors shall always be specifically supplied for the available
electric current characteristics of voltage and frequency. Motor speed shall not exceed
2900 rpm
5.3.1.5. The water tests will be made to every part of each drainage system as per Specifications.
The water will be kept in the system, or in the portion under test, for at least 15 minutes
before inspection starts.
5.3.1.6. Correct defects detected by any test and retest.
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BOOSTER PUMPS
------------------------ Procedure End----------------------
GENERAL INFORMATION
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