method of statement-rev1

SAFE WORK METHOD STATEMENT

PROJECT :BANK NEGARA MALAYSIA

ITEM : FLOOR/SLAB OPENING FOR AIR CONDITIONING SERVICES

ITEM JOB STEPS/METHODOLOGY HAZARD RISK CONTROLS RESPONSIBLE PERSON

1.0 GENERAL

1.1 To provide slab/floor opening information Site-coordinator

(size & location) to C & S contractor.

2.0 PHYSICAL WORK

2.1 Identify the information regarding size and location Site-coordinator

from the approved shop drawing.

2.2 Forwad the information to Main Contractor. Site-coordinator

2.3 Fabricate the opening frame according to the size of Normal site hazard Expose to mechanical toolsUse proper PPE and Site-coordinator / Safety

the opening. injury. proper tools. Officer

Normal site risk

2.4 Forwad the frame to C & S contractor complete with Site-coordinator

all necessary information.

2.5 Assist Main Contractor upon installation of the frame. Normal site hazard Normal site risk Use proper PPE. Site-coordinator / Safety

3.0 AFTER WORK COMPLETE

3.1 Evaluate the openings to ensure sufficient space for Normal site hazard Normal site risk Ensure proper alignment Site-coordinator /

further ductworks and piping works. upon installation. Safety officer

4.0 PREVENTIVE MAINTENANCE

8


PROJECT : BANK NEGARA MALAYSIA

ITEM : AIR HANDLING UNITS FOR AIR CONDITIONING SERVICES


1.0 GENERAL

1.1 To properly install, operate and maintain the Air Site-coordinator

Handling Units (AHU).

1.2 To provide carefull testing & commissioning for the Site-coordinator

installed Air Handling Units.

1.3 AHU are to be delivered complete with blower, blower

motor, coils, insulated casing, hinged access doors

and filters.

2.0 PHYSICAL WORK

Site-coordinator

2.1 Identify all necessary information from the approved

shop drawing.

2.2 Evaluate site condition to ensure sufficient space for Normal site hazard. Expose to mechanical tools Site-coordinator /

installation of AHU and it's accersories. injury. Safety officer

2.3 Selected AHU then shift to the designated location Normal site hazard. Normal site risk. Site-coordinator /

using tower crane or mobile crane. Hoisting canvas Safety officer

sling is used at every corner or the AHU to avoid

damage to the AHU panels.

2.4 The neoprene pad then inserted below each corner

of the AHU once it is lower to the concrete plinth.

2.5 Properly align and connect chilled water pipe to the Hotwork hazard. Fire explosion. Proper grounding for Site-coordinator /

AHU complete with vavle etc. The pipe connection electrical mechinary. Safety officer

between the AHU and pipework shall have flexible Provide fire extinguisher

rubber joint/coupling. near working area.

2.6 Properly align and connect the flexible canvas joint Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

to the main ductwork. competent person. Safety officer

2.7 Properly align and connect the condensate drain

for proper dischage location. The pipe shall have a

U-trap for maintenance purpose.





2.4 Install the unit switchboard complete with all wiring Electrical hazard. Electrical shock. Provide fire extinguisher Site-coordinator /

and termination to all necessary equipment. Fire explosion. near working area. Safety officer


3.1 Remove all debris. Normal site hazard Normal site risk Use proper PPE. Site-coordinator

3.2 Check ensure no leakage at the chilled water pipes Site-coordinator

connection and install the pipe insulation.

3.3 Turn on the blower and verify the rotation is correct. Site-coordinator

3.4 Applied Magger test for the wiring connection. Electrical shock. Electrical hazard. Provide fire extinguisher Site-coordinator /

Fire explosion. near working area. Safety officer

3.5 Do the test run and ensure there is no leakage in Site-coordinator

supply and return duct connection.


4.1 Air filters are to be cleaned at least four times a year

and in case of major clogging, change the air filters.

4.2 Check and adjust if necesssary the tension and

alignment of the belt.

4.3 Ensure the pulley set screws are properly tightened

and there is no crack on the pulley.

4.4 Turn the blower manually and ensure it is running

smoothly without any excessive bearing noise.

4.5 Check and remove any clogged item/dirt between

coil fins.

4.6 Check voltage, current, wiring and all connection.



ITEM : MECHANICAL VENTILATION FANS FOR AIR CONDITIONING SERVICES


1.0 GENERAL

1.1 To properly install, operate and maintain the Site-coordinator

Mechanical Ventilation Fans.

Site-coordinator

1.2 To provide carefull testing & commissioning for the

Mechanical Ventilation Fans.

1.3 The delivered mechanical ventilation fans are

normally coupled together with the motor in factory.

1.4 Ensure the foundation or mounting arrangement and Site-coordinator

the duct connections are adequately in accordance

with recognized acceptable engineering practices.

2.0 PHYSICAL WORK

Site-coordinator


shop drawing.

2.2 Evaluate site condition to ensure sufficient space for Normal site hazard Expose to mechanical tools Use proper PPE. Site-coordinator /

installation of the fan and it's accersories. injury. Safety officer

2.3 Mechanical ventilation fans generally installed by Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

hung on steel support bracket with either spring competent person. Safety officer

isolator or neoprene pad/elastomer isolating

materials. (except for the wall mounted type fan).

2.4 Install rawl plug/flush anchor to slab soffit. The Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

galvanised steel threaded rods are then joined the competent person. Safety officer

flush angle for hanging the fans with the spring

isolator.

2.5 The fan then shall be lifted up to the selected Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

position by man power unless it is too heavy. competent person. Safety officer

(In this case, chain block shall be used).



ITEM : MECHANICAL VENTILATION FANS FOR AIR CONDITIONING SERVICES


2.6 Properly align and connect the unit with flexible Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

canvas if the connection is in between ductwork. competent person. Safety officer

2.7 Properly align and connect the unit with fire rated Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

flexible connection if the connection is in between competent person. Safety officer

fire rated ductwork.

2.8 Install the unit starter panel complete with all wiring Electrical hazard. Electrical shock. Provide fire extinguisher Site-coordinator /




3.2 Check and tighten all hold-down (securing) bolts. Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

competent person. Safety officer

3.3 Do the test run and ensure the impeller is in the Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

correct rotation direction. competent person. Safety officer

3.4 Do the test run and ensure there is no leakage in Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

duct connection. competent person. Safety officer


Site-coordinator



ITEM : CHILLED WATER FAN COIL UNITS FOR AIR CONDITIONING SERVICES


1.0 GENERAL

1.1 To properly install, operate and maintain the Chilled Site-coordinator

Water Fan Coil Units (FCU).

Site-coordinator


installed Chilled Water Fan Coil Units.

1.3 FCU shall be delivered complete with blower, blower

motor, coils, insulated casing, drain pan and filter.

2.0 PHYSICAL WORK

Site-coordinator


shop drawing.

2.2 Evaluate site condition to ensure sufficient space for Normal site hazard Expose to mechanical tools Site-coordinator /

installation of FCU and it's accersories. injury. Safety officer

2.3 Selected FCU then shift to the designated location Normal site hazard. Normal site risk. Site-coordinator /


sling is used at every corner or the FCU to avoid

damage to the panels.

2.4 Rawl plug/flush anchor are installed to the slab soffit Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

prior istalling the units. The distance between the competent person. Safety officer

rawl plug must be measured and consistent with the

distance between the bracket opening.

2.5 Threaded rod of galvanised steel and is then joint to Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

the rawl plug with 10mm thick neoprene pad. For competent person. Safety officer

FCU with blower motor size bigger than 2 hp, spring

isolator shall be used.

2.6 FCU is then lifted up by manpower with the use Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

of scafolding and fixed to the bracket with double competent person. Safety officer

nuts and washers. The bracket/treaded rod shall be

vertically straight. The FCU shall be slightly tilted

with the drain pipe connection portion slightly lower

to ensure easier flow of condensate water.





2.7 Threaded rod of galvanised steel and is then joint to Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

the rawl plug with 10mm thick neoprene pad. For competent person. Safety officer

FCU with blower motor size bigger than 2 hp, spring

isolator shall be used.

2.8 Properly align and connect chilled water pipe to the Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

AHU complete with vavle etc. The pipe connection Hotwork hazard. Fire explosion competent person. Safety officer



2.9 Properly align and connect the unit's flexible canvas Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

joint (if ducted) to the main supply duct. The return competent person. Safety officer

air (if ducted) duct does not require flexible joints.

2.10 Properly align and connect the condensate drain Normal site hazard. Normal site risk. Site-coordinator /



2.11 Install the unit starter panel complete with all wiring Electrical hazard. Electrical shock. Provide fire extinguisher Site-coordinator /





connection and install pipe insulation.

3.4 Applied Magger test for the wiring connection. Electrical hazard. Electrical shock. Provide fire extinguisher Site-coordinator /



duct connection (if any).











coil fins.




ITEM : COOLING TOWERS FOR AIR CONDITIONING SERVICES


1.0 GENERAL

1.1 To properly install, operate and maintain the Cooling Site-coordinator

Towers.


installed Cooling Towers.

1.3 Cooling Towers shall be delivered in two section

namely blower section and fin section.

2.0 PHYSICAL WORK

Site-coordinator


shop drawing.

2.2 Evaluate site condition to ensure sufficient space for Normal site hazard Expose to mechanical tools Use proper PPE and Site-coordinator / Safety

installation of Cooling Towers and it's accersories. injury. proper tools. Officer

Normal site risk

2.3 Cooling Towers then shift to the designated location Normal site hazard Expose to mechanical tools Use proper PPE and Site-coordinator / Safety

using tower crane or mobile crane. Hoisting canvas injury. proper tools. Officer

sling is used to hoist the Cooling Towers. Normal site risk

2.4 Ensure the concrete/casted plinth is ready to receive Normal site hazard Expose to mechanical tools Use proper PPE and Site-coordinator / Safety

the cooling towers. The cooling towers section's then injury. proper tools. Officer

assembled on the plinth. Normal site risk

2.5 The neoprene pad then inserted below each corner Normal site hazard Expose to mechanical tools Use proper PPE and Site-coordinator / Safety

of the cooling tower once it is lower to the concrete injury. proper tools. Officer

plinth. If casted plith is used, spring isolator is used Normal site risk

to replace the neoprene pad.

2.6 Properly align and connect condenser water pipe to Hotwork hazard. Fire explosion Provide fire extinguisher Site-coordinator / Safety

the cooling tower' inlet and outlet pipe complete with . Expose to mechanical tools near working area. Officer

vavle etc. injury. Use proper PPE and

proper tools.



ITEM : COOLING TOWERS FOR AIR CONDITIONING SERVICES


2.7 Properly align and connect make-up water pipe to Hotwork hazard. Fire explosion Provide fire extinguisher Site-coordinator / Safety

the cooling tower' make up water inlet pipe complete Expose to mechanical tools near working area. Officer

with vavle etc. injury. Use proper PPE and

proper tools.

2.8 Properly align and connect the cooling tower's drain Hotwork hazard. Fire explosion Provide fire extinguisher Site-coordinator / Safety

pipe to respective dischage location. Expose to mechanical tools near working area. Officer

injury. Use proper PPE and

proper tools.





3.2 Check ensure no leakage at the condenser water Site-coordinator

pipes connection.




cooling towers sealent/joint.


Site-coordinator



ITEM : AIR COOLED SPLIT UNITS FOR SITE CABIN.


1.0 GENERAL


Cooled Split Units (ACSU) for Site Cabin.

1.3 ACSU are to be delivered complete with indoor blower Site-coordinator

unit and outdoor condensing units.

2.0 PHYSICAL WORK

2.2 Evaluate site condition to ensure sufficient space for Normal site hazard Expose to mechanical tools Use proper PPE. Site-coordinator /

installation of ACSU and it's accersories. injury. Safety officer

2.3 ACSU then shift to the designated location Normal site hazard Normal site risk. Use proper PPE. Site-coordinator

using manpower.

2.4 The attached wall plate are first removed from it's Normal site hazard Expose to mechanical tools Use proper PPE and Site-coordinator

back and then placed at the cabin wall using their injury. proper tools.

screws.

2.5 Routed the rerigerant pipe properly to the planned Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

position, together with the drain hose and electrical Normal site hazard Expose to mechanical tools competent person. Safety officer

cables using vinly tape. injury. Use proper PPE and

proper tools.

2.6 Then fitted the indoor unit to the wall plate using Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

manpower with the use of scafolding if necessary. competent person. Safety officer

2.8 Mounted the outdoor unit in a strong level flat surface Hotwork hazard. Fire explosion Provide fire extinguisher Site-coordinator / Safety

(a/c latch,balcony,ground floor etc). Alternatively, unit Normal site hazard Expose to mechanical tools near working area. Officer

can be hung by using suitable fix brackets. Then injury. Use proper PPE and

connect the refrigerant pipes to the unit. proper tools.

2.9 Route the condensate drain hose to proper discharge Normal site hazard Normal site risk Use proper PPE. Site-coordinator

location.

2.10 Install the unit starter complete with wiring and Electrical hazard. Electrical shock. Provide fire extinguisher Site-coordinator /

termination to the unit. Fire explosion. near working area. Safety officer



ITEM : AIR COOLED SPLIT UNITS FOR SITE CABIN.




3.2 Check ensure no leakage at the refrigerant pipe Site-coordinator







ITEM : AIR COOLED SPLIT UNITS FOR AIR CONDITIONING SERVICES


1.0 GENERAL


Cooled Split Units (ACSU).


Air Cooled Split Units.

1.3 ACSU shall be delivered complete with indoor blower

unit and outdoor condensing units.

2.0 PHYSICAL WORK

2.1 Identify all necessary information from the approved Site-coordinator

shop drawing.


installation of ACSU and it's accersories. injury. Safety officer

2.3 Selected ACSU then shift to the designated location Normal site hazard Normal site risk. Use proper PPE. Site-coordinator

using manpower.

2.4 For wall mounted units, the attached wall plate are Normal site hazard Expose to mechanical tools Use proper PPE and Site-coordinator

first removed from it's back and then placed at the injury. proper tools.

wall using the screws which supplied together with

the unit.

2.5 Routed the rerigerant pipe properly to the required Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

position, together with the drain hose and electrical Normal site hazard Expose to mechanical tools competent person. Safety officer

cables using vinly tape. Insulation tube is used at injury. Use proper PPE and

every wall panetration. proper tools.

2.6 Then fitted the indoor unit to the wall plate using Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

manpower with the use of scafolding if necessary.. competent person. Safety officer

2.7 For ceilling exposed units,galvanised steel threaded Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

rod is used to hung the unit at the required location. competent person. Safety officer

2.8 ACSU is lifted up by manpower with the use of Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

scafolding and fixed to the bracket with double nuts Normal site hazard Expose to mechanical tools competent person. Safety officer

and washers. The bracket/treaded rod shall be injury. Use proper PPE and



ITEM : AIR COOLED SPLIT UNITS FOR AIR CONDITIONING SERVICES


vertically straight. The ACSU shall be slightly tilted proper tools.

with the drain pipe connection portion slightly lower

to ensure easier flow of condensate water.

2.9 Routed the rerigerant pipe properly to the required Hotwork hazard. Fire explosion Provide fire extinguisher Site-coordinator / Safety

position, together with the drain hose and electrical Expose to mechanical tools near working area. Officer

cables using vinly tape. Insulation tube is used at injury. Use proper PPE and

every wall panetration. proper tools.

2.8 Mounted the outdoor unit in a strong level flat surface Hotwork hazard. Fire explosion Provide fire extinguisher Site-coordinator / Safety

(a/c latch,balcony,ground floor etc). Alternatively, unit Expose to mechanical tools near working area. Officer

can be hung by using suitable fix brackets. Then injury. Use proper PPE and

connect the refrigerant pipes to the unit. proper tools.

2.9 Route the condensate drain hose to proper discharge Normal site hazard Normal site risk Use proper PPE. Site-coordinator

location.

2.10 Install the unit starter panel complete with wiring and Electrical hazard. Electrical shock. Provide fire extinguisher Site-coordinator /

termination to the unit. Fire explosion. near working area. Safety officer



3.2 Check ensure no leakage at the refrigerant pipe Site-coordinator





Site-coordinator



ITEM : DUCTWORKS FOR AIR CONDITIONING SERVICES


1.0 GENERAL

1.1 To properly install all ductwork in accordance with Site-coordinator

SMACNA recommendations.


installed ductworks.

1.3 Fabrication in factory are to be based on measurement Site-coordinator

from approved shop drawings.

1.4 Final adjustment are to be measured at site for offsets Site-coordinator

or transitions to suit the application and to avoid

clashing with other trade.

1.5 All ducts protruding through walls and floors and Site-coordinator

exposed to view are to be provided with a neat

galvanized steel frame fixed to ducts and to walls

or floor as appropriate.

1.6 Where ducts extend beyond external walls or roofing Site-coordinator

they were to be flushed with fully welded or soldered

joints and completely weather proof.

1.7 Ductwork with minimum 25 mm thick are to be Site-coordinator

wrapped with 32 kg/m3 density fiberglass backed

with reinforced aluminum foil. For ductwork below the

roof and in non air-conditioned space, the insulation

are to be minimum 50 mm thickness, 32 kg/m3

density fiberglass back with reinforced aluminum foil.

1.8 All ductwork unless acoustically/ internally lined,

are to be externally insulated Site-coordinator

1.9 During installation, open duct ends are to be covered Site-coordinator

with a plastic or tarpaulin to prevent ingress of

unwanted materials.





2.0 PHYSICAL WORK

Site-coordinator


shop drawing.

2.2 Evaluate site condition to confirm(with marking) the Normal site hazard Normal site risk Site-coordinator

route of duct and to ensure sufficient space for

installation work.

2.3 Rawl plug are installed to slab soffit along confirmed Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

route of ductwork. Then, hanger rod are fastened to Normal site hazard Expose to mechanical tools competent person. Safety officer

the rawl plug .Ensure the hanger rod are vertically injury. Use proper PPE and

straight. proper tools.

2.4 Angle bar will then be fastened onto these hangging Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

rods with double nuts and washers to form a base Normal site hazard Expose to mechanical tools competent person. Safety officer

or platform for ducting. injury. Use proper PPE and

proper tools.

2.5 Fabricated duct will then shifted to the site using Normal site hazard Normal site risk Site-coordinator

manpower.

2.6 The fabricated duct is then lifted up by manpower Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

with the use of scafolding and fixed to the angle bar. Normal site hazard Expose to mechanical tools competent person. Safety officer

The main ductwork will be fixed first, followed by injury. Use proper PPE and

branch connections, then flexible duct which will then proper tools.

connect to the air outlets.

2.7 Properly align and connect straight duct using exact Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

joint according to SMCNA requirement. Normal site hazard Expose to mechanical tools competent person. Safety officer


proper tools.

2.8 Properly align and connect duct at offset points using Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

exact joint according to SMCNA requirement. Normal site hazard Expose to mechanical tools competent person. Safety officer


proper tools.

2.9 Properly align and connect duct at transition points Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

using exact joint according to SMCNA requirement. Normal site hazard Expose to mechanical tools competent person. Safety officer


proper tools.





2.10 Install bends, tees, damper offsets, flexible Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

connection take-off and similar fittings necessary to Normal site hazard Expose to mechanical tools competent person. Safety officer

complete the ductwork system for the balancing and injury. Use proper PPE and

full operation of the air distribution system. proper tools.


3.1 Remove all debris. Normal site hazard Normal site risk Site-coordinator

3.2 Visually check the workmanship at each joint of Normal site hazard Normal site risk Site-coordinator

the installed ducting.

3.3 Applied air leaking test for the installed ducting. Normal site hazard Normal site risk Site-coordinator

3.4 Adjust the air outlet dampers to distribution the Normal site hazard Normal site risk Site-coordinator

design quantity of air into the designed space.


Site-coordinator



ITEM : WATER PUMPS FOR AIR CONDITIONING SERVICES


1.0 GENERAL

1.1 To properly install, operate and maintain the Pumps. Site-coordinator


installed Pumps.

1.3 Pumps are to be delivered properly coupled with Site-coordinator

electric motor.

1.4 Pumps and electric motors are to be labbelled with Site-coordinator

identification tag including capacity and motor kW

information.

1.5 Pumps inlet and outlet connection are to be capped Site-coordinator

before any installation works.

2.0 PHYSICAL WORK

Site-coordinator


shop drawing.


installation of the pumps and it's accersories. injury. Safety officer

2.3 Pumps then shift to the designated location using Normal site hazard. Expose to mechanical tools Use proper PPE and Site-coordinator / Safety

tower crane or mobile crane. Hoisting canvas sling is injury. proper tools. Officer

used to hoist the pumps.

2.4 Ensure the concrete/casted plinth is ready to receive Normal site hazard. Expose to mechanical tools Use proper PPE and Site-coordinator / Safety

the pumps. The pumps are then assembled on the injury. proper tools. Officer

plinth. Ensure motor and pumps shaft are joined

together with flexible coupling.

2.5 The neoprene pad then inserted below each corner Normal site hazard. Expose to mechanical tools Use proper PPE and Site-coordinator / Safety

of the pump once it is lower to the concrete plinth. injury. proper tools. Officer

If casted plith is used, spring isolator is used to

replace the neoprene pad.





2.6 Properly align and connect condenser/chilled water Hotwork hazard. Fire explosion Provide fire extinguisher Site-coordinator / Safety

pipe to the pump's inlet and outlet pipe complete with Normal site hazard. Expose to mechanical tools near working area. Officer

all necessary fittings and vavles. Ensure the pipe injury. Use proper PPE and

connection is using flexible joints to minimized the proper tools.

vibration transmission.





3.2 Check ensure no leakage at the pump assemble and Normal site hazard Normal site risk Site-coordinator

at pipes connection.








1.0 GENERAL

1.1 To properly install, operate and maintain VAV Boxes. Site-coordinator


installed VAV Boxes.

1.3 VAV Boxes are to be fully factory assemble, Site-coordinator

complete with the DDC controller, actuator and

accessories.

1.4 VAV Boxes are to be labelled or tagged and Site-coordinator

protected with PVC sheet.

1.5 The inlet to the VAV Boxes from the ducting are to Site-coordinator

be using round rigid sheetmetal.The outlet connection

are to be rectengular duct.

2.0 PHYSICAL WORK

Site-coordinator


shop drawing.

2.2 Evaluate site condition to ensure sufficient space for Normal site hazard Normal site risk Use proper PPE. Site-coordinator

installation of the VAV Boxes and it's accersories.

2.3 Anchor flush are installed to slab soffit at confirmed Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

location. Then, galvanised threaded rod are fastened Normal site hazard Expose to mechanical tools competent person. Safety officer

to the anchor flush .Ensure the galvanised threaded injury. Use proper PPE and

rod are vertically straight. proper tools.

2.4 VAV Boxes then shift to the designated location Normal site hazard Normal site risk Use proper PPE. Site-coordinator

using manpower.

2.5 The VAV Box is then lifted up by manpower with the Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

use of scafolding and fixed to threaded rods. Normal site hazard Expose to mechanical tools competent person. Safety officer


proper tools.





2.6 Properly align and connect duct at inlet and outlet Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

position using exact joint according to SMCNA Normal site hazard Expose to mechanical tools competent person. Safety officer

requirement. injury. Use proper PPE and

proper tools.

2.6 Install the VAV Box wiring and termination. Electrical hazard. Electrical shock. Provide fire extinguisher Site-coordinator /




3.2 Visually check the workmanship at each duct joint. Normal site hazard Normal site risk Site-coordinator

3.4 Applied air leaking test for the installed VAV Box. Normal site hazard Normal site risk Site-coordinator






1.0 GENERAL

1.1 To properly install, operate and maintain the Heat Site-coordinator

Recovery Wheel.


installed HRW.

1.3 HRW are to be delivered complete with blower, blower

motor, coils, insulated casing, hinged access doors

and filters.

2.0 PHYSICAL WORK

Site-coordinator


shop drawing.

2.2 Evaluate site condition to ensure sufficient space for Normal site hazard. Expose to mechanical tools Site-coordinator /

installation of HWR and it's accersories. injury. Safety officer

2.3 Selected HWR then shift to the designated location Normal site hazard. Normal site risk. Site-coordinator /


sling is used at every corner or the AHU to avoid

damage to the AHU panels.


of the AHU once it is lower to the concrete plinth.

2.5 Properly align and connect chilled water pipe to the Hotwork hazard. Fire explosion. Proper grounding for Site-coordinator /

AHU complete with vavle etc. The pipe connection electrical mechinary. Safety officer



2.6 Properly align and connect the flexible canvas joint Improper platform erected. Slip from high level. Safe platform erected by Site-coordinator /

to the main ductwork. competent person. Safety officer

2.7 Properly align and connect the condensate drain












connection and install the pipe insulation.

3.3 Turn on the blower and verify the rotation is correct. Site-coordinator

3.4 Applied Magger test for the wiring connection. Electrical shock. Electrical hazard. Provide fire extinguisher Site-coordinator /



supply and return duct connection.






4.3 Ensure the pulley set screws are properly tightened

and there is no crack on the pulley.

4.4 Turn the blower manually and ensure it is running

smoothly without any excessive bearing noise.


coil fins.






1.0 GENERAL

1.1 To properly install Trunking in accordance to BS 729, Site-coordinator

BS 4678, BS 6946 and BS 7671

1.2 Separate trunking are to be installed for normal and

essential supply.

1.3 Slab shall be skin coated before trunking installation

started.

2.0 PHYSICAL WORK

Site-coordinator


shop drawing.

2.2 Evaluate site condition for routing identification. Normal site hazard Expose to mechanical tools Site-coordinator /

2.3 Pumps then shift to the designated location using

tower crane or mobile crane. Hoisting canvas sling is


2.4 Ensure the concrete/casted plinth is ready to receive

the pumps. The pumps are then assembled on the




of the pump once it is lower to the concrete plinth.







2.6 Properly align and connect condenser/chilled water

pipe to the pump's inlet and outlet pipe complete with

all necessary fittings and vavles. Ensure the pipe

connection is using flexible joints to minimized the


2.7 Install the unit switchboard complete with all wiring

and termination to all necessary equipment.


3.1 Remove all debris. Normal site hazard Normal site risk Site-coordinator /

3.2 Check ensure no leakage at the pump assemble and Safety officer


3.4 Applied Magger test for the wiring connection.


Site-coordinator





1.0 GENERAL



installed Pumps.

1.3 Pumps shall be delivered properly coupled with

electric motor.

1.4 Pumps and electric motors shall be labbelled with


information.

1.5 Pumps inlet and outlet connection shall be capped


2.0 PHYSICAL WORK

Site-coordinator


shop drawing.































Site-coordinator





1.0 GENERAL



installed Pumps.


electric motor.



information.



2.0 PHYSICAL WORK

Site-coordinator


shop drawing.































Site-coordinator





1.0 GENERAL



installed Pumps.


electric motor.



information.



2.0 PHYSICAL WORK

Site-coordinator


shop drawing.































Site-coordinator





1.0 GENERAL



installed Pumps.


electric motor.



information.



2.0 PHYSICAL WORK

Site-coordinator


shop drawing.































Site-coordinator

method of statement-rev1

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