01) Jack-In Pile Submission

Jack-In pile submission Company

Hong Kiat Construction Pte Ltd

No. of pages To

1 + 46 Mr Ang Eng Leng / Ms Wan Chin

From Subject :

Ms Poh Siew

Date

3-Aug-15

Phone

6744 5586

Fax

6748 7346

Jack-in piling works at No. at No. 70 Buangkok View

The following documents are for your onward transmittal to the Engineer for approval :

1 2 3 4

Jack-in pile equip Pressure-force conversion chart Pressure gauge calibration certificate Method statement L.M. Certificate

1 1 1 1

Pile size 250 300 SW L (ton) 69.5 69.5 Remarks :

5 6 7

Ultimate / Static load test Pressure-force conversion chart Pressure gauge calibration certificate Method statement

1 1 2

8

PDA test Pile Set Calculations for PDA load test

2

(Calculation may be resubmited base on actual site data)

9

10 11 12 13 14 15 16 17 18 19 20 21

Method statement Others L.M. Certificate (mini crane) Crane Operator License Lifting Supervisor Certificate Rigging Certificate Signalling certificate Wel Welder certificates R.C pile specif ecifiication Vibration monitoring location (proposed) Risk Assessment Form Safe W ork Procedure Licensed Builders

10

1 1 1 1 1 2 2 * 9 7 1 * Items will be submitted if required

**This submission shall deemed to be approved for site use if we do not receive any comments from your goodself or the engineer before commencement of piling works.**

Please kindly acknowledge the Engineer's acceptance on the the above submission by signing below ASAP & fax back to us for our record. Thank you. For acceptance,

Name : ______________________ Date :____ / ____ / ____

Method Statement Jack-In pile system 1. The piling machine is positioned central to the pile peg position. 2. The pile is placed directly over piling over piling peg and hydraulic pressure is exerted to penetrate the pile into the ground. 3. Verticality of the of the pile is checked using a spirit level. 4. Hydraulic force is applied continuously at a pressure corresponding to the resistance of the pile. The pressure gauge’s reading (in psi ) can be interpolated into resistance of the soil in metric ton. 5. The pile is jacked is jacked to a level ready for the for the insertion of the of the second pile section. 6. The second pile section is inserted and jacked to the required level for welding to be performed. 7. Butt weld all round the perimeter of the pile is carried out on the joint the joint & a cooling time of 3 minutes is observed before jacking before jacking continues. 8. The above procedures are repeated for the for the subsequent sections until the pile is set. The pile is considered set when it does not penetrate further to further to the ground when jacked when jacked to the required . (please refer to the respective conversion charts, which will be submitted upon tonnage* confirmation of equipment of equipment to be used on used on site. ) site. ) 9. Procedures for taking for taking set: a) After the After the required jacking required jacking pressure is achieved, a masking (paper) tape is pasted onto the pile. An independent stable horizontal platform guide for marking for marking lines onto the tape is set up. b) The first line is drawn onto the paper tape by moving a pencil along the platform. The line drawn represents the pile jacked pile jacked to the required capacity (usually 2 times SWL). c) The pressure is maintained for 2 for 2 minutes & the second line is drawn. d) If the If the first & second line coincides, no settlement of pile of pile has occurred. Otherwise extent of the of the settlement is determined by the difference between the first & second drawn line. The pile is considered set if the if the distance between the first & second lines does not exceed not exceed 10mm 10mm.. e) The third line is drawn after the hydraulic pressure is released completely. The rebound or temporary compression (T.C.) of the of the pile is indicated by measuring the difference between the second & third drawn line. (The T.C. is due to elastic shortening behaviour of pile & is proportional to the load applied & length of pile of pile installed.) Other works Other works a. Pile extension “dolly” to be allowed for usage to install piles below work platform level. b. Kentiledge load tests to 2 times Safe Working Load (SWL) of pile shall be conducted on selected pile(s) to verify the capacity of piles of piles installed (if required). (if required).

Rev 4 – Nov 2012

Static Load Test Pile Size : 250mm x 250mm & 300mm x 300mm

Project :

Proposed Extension, Additions & Alterations To Existing 7-Storey Nursing Home To Become 8-Sty (Supervisory Health Care Facilities) On Lots 01402A PT & 02390W PT MK 21 At No. 70 Buangkok View (Hougang Planning Area)

Load testing procedural for

69.5 tons

working load

1) Preparation The selected pile has to be cut-off or built up t o a appropriate level for placement of the necessary loading equipment. Where the bearing surface of the test pile is not at its mildsteel end cap, the brunt pile head has to be built-up such that a horizontal bearing surface that is perpendicular to the axis of the test pile is available. 2) Method of loading The load test is applied by means of a jack which obtained its reaction from the kentledge heavier than the required test load. T he kentledge will be the Jack-In pile equipment made up of counter weight approx. 1 ton to 2 tons each stacked neatly on top of each other. T he pressure gauge used shall be calibrated by an approved laboratory before commencement of load test. The sequence of stacking of test blocks shall be at the discretion of the foreman on site. 3) Measurement of settlement The level and staff method would be used to measure pile settlement. The surveyor's level shall be mounted on a rigidly anchored support. Scale rules (4nos.) shall be used for taking settlement reading to an accuracy of 0.5mm. Two nos. of scale rules shall be securely fixed to the pile for checking its settlement. Another two are fixed on two separate stable permanent support away from the kentledge to serve as bench marks or datum. By taking the difference in scale reading between the scale on the pile and its datum, the pile settlement could be established. 4) Test proper In the First Cycle, the test pile is incrementally loaded to its working load of Day 1 Step 1 2 3 4 5

Loading time Time (hourly)

9:00 9:30 10:00 10:30

& & & &

9:00 9:30 10:00 10:30 11:00

Load jacking 69.5 tons Loading (tons)

Load stage

0 17.375 34.75 52.125 69.5

0% 25% 50% 75% 100%

69.5 tons Readings

% take initial reading 2nd & 3rd 4th & 5th 6th & 7th 8th & 9th

Project :

Proposed Extension, Additions & Alterations To Existing 7-Storey Nursing Home To Become 8-Sty (Supervisory Health Care Facilities) On Lots 01402A PT & 02390W PT MK 21 At No. 70 Buangkok View (Hougang Planning Area)

The load holding is maintained for

Day 2

Unloading time Time (hourly)

Step 1 2 3 4 5

11:00 11:30 12:00 12:30

& & & &

11:00 11:30 12:00 12:30 13:00

24 hrs

and being released on the 2nd day.

Load release 0 tons Loading (tons)

Load stage

69.5 52.125 34.75 17.375 0

100% 75% 50% 25% 0%

Readings


Second Cycle The test pile is incrementally loaded to its 2 times SWL of

139.0

After 1 hour rest Day 2 Step 1 2 3 4 5 6 7

Loading time Time (hourly)

14:00 14:30 15:00 15:30 16:00 16:30

& & & & & &

14:00 14:30 15:00 15:30 16:00 16:30 17:00

The load holding is maintained for Day 3 Step 1 2 3 4 5

Unloading time Time (hourly)

17:00 17:30 18:00 18:30

& & & &

17:00 17:30 18:00 18:30 19:00

Load jacking 139.0 tons Loading (tons)

Load stage

0 34.75 69.5 86.875 104.25 121.625 139

0% 50% 100% 125% 150% 175% 200%

24 hrs

Readings

% take initial reading 2nd & 3rd 4th & 5th 6th & 7th 8th & 9th 10th & 11th 12th & 13th

and being released on the 3rd day.

Load release 0 tons Loading (tons)

Load stage

139 104.25 69.5 34.75 0

200% 150% 100% 50% 0%

Readings


Date :

3-Aug-15

FOR DRIVEN / PDA TEST ONLY

PILE SET CALCULATION Proposed Extension, Additions & Alterations To Existing 7-Storey Nursing Home To Become 8Storey (Supervisory Health Care Facilities) On Lots 01402A PT & 02390W PT MK 21 At No. 21 At No. 70 Buangkok View (Hougang Planning Area) Pile Information 1 2 3 4 5 6 7 8 9 10 11

Pile size Pile working load Negative skin friction Pile Length Pile Weight / meter Ultimate resistance Temporary compression Coefficient of restitution Weight of pile Efficiency Final Set per blow

FOS 2 times 1 time(s)

R C n P h

-3.13

-1.01

1.7 1480 -31.3

2.2 1480 -10.1

250 69.5 0.0 43.0 162.56 139.0 15.0 0.30 6.99 0.90 0.40 1.39

2

mm ton ton m kg/m ton mm ton 1.45

1.47

mm

2.8 1410 14.5

3.3 1100 14.7

ton

Proposed driving criteria

A Hammer weights B Effective stroke C Set per 10 blows

W H

Hiley's formula

R



WH h s



c 2

Pile size & wt.

W 



W

2

n P



P

Size 114.3 141.3 168.3 150 175 200 225 250 275 300

kg/m 16.07 21.78 28.26 57.8 79.2 103.0 132.3 162.6 203.1 232.6

2.5 1480 4.0

2.7 1480 13.9

mm mm

Date :

3-Aug-15

FOR DRIVEN / PDA TEST ONLY

PILE SET CALCULATION Proposed Extension, Additions & Alterations To Existing 7-Storey Nursing Home To Become 8Storey (Supervisory Health Care Facilities) On Lots 01402A PT & 02390W PT MK 21 At No. 21 At No. 70 Buangkok View (Hougang Planning Area) Pile Information 1 2 3 4 5 6 7 8 9 10 11

Pile size Pile working load Negative skin friction Pile Length Pile Weight / meter Ultimate resistance Temporary compression Coefficient of restitution Weight of pile Efficiency Final Set per blow

FOS 2 times 1 time(s)

-3.88

-2.14

300 69.5 0.0 43.0 232.56 139.0 15.0 0.30 10.00 0.90 -0.98 -0.17

1.7 1480 -38.8

2.2 1480 -21.4

2.5 1480 -9.8

R C n P h

2

mm ton ton m kg/m ton mm ton 0.26

1.47

mm

2.8 1480 2.6

3.3 1330 14.7

ton

Proposed driving criteria

A Hammer weights B Effective stroke C Set per 10 blows

W H

Hiley's formula

R



WH h s



c 2

Pile size & wt.

W 



W

2

n P



P

Size 114.3 141.3 168.3 150 175 200 225 250 275 300

kg/m 16.07 21.78 28.26 57.8 79.2 103.0 132.3 162.6 203.1 232.6

2.7 1480 -1.7

mm mm

Euroc ode comp liant SS EN / BS EN

Eurocode Compliant SS EN / BS EN

Eurocode Compliant SS EN / BS EN

PECK BROTHERS Construction Pte Ltd

4310-F02 (Rev 6)

List of Aspect / Impact and Hazard / Risks Company


Process Location

Rev No.

Edmund Peck – Senior Project Manager 25th Jun 2015

Approved by (Name, Designation, Date)

Last Review Date

1. Hazard Identification

No.

Work Activity

6.1

Mobilisation & demobilisation of machine using lorry crane

6.2

Unloading of machine parts from lorry crane

Movement of machine

Severity (S)

Hazard / Environmental Aspect

Unsafe access or ground condition

Parts or Machine detaching from the lifting gear while lifting

Blind spot at rear of machine beyond sight of operator

Likelihood (L)

Brandon Wong – Assistant Project Manager, Myo Hlaing – Senior Supervisor, Brandon Lee – Project Executive Saw Zaw Moe Aung – Site Supervisor

Conducted by (Names, Designations, Date)

6. Jack piling

Original Assessment Date

6.3

Page 22 to 46

25th Jun 2015

7

Next Review Date

2. Risk Evaluation Possible Accident / Ill Health & Personsat-Risk / Environmental Impact

Existing Risk Control (if any)

25th Jun 2018

3. Risk Control

y t i r e v e S

d o o h i l e k i L

/ l e v e t L c k a s p i m R I

Additional Risk Control

y t i r e v e S

d o o h i l e k i L


Toppling of crane while unloading machine parts

The operator of the lorry crane is to ensure that the crane stablilisers have been properly setup

4

2

8

Use additional steel plates for setting the jacks. Lifting Supervisor to ensure before lifting starts

3

1

3

Toppling of the lorry causing death to the rigger man

he piling operator and signal & rigger accompanying the machine is to ensure that the machine has been 4 properly shackled prior to lifting. Ensure all lifting gears used are within the calibration of 12 months.

2

8

Usual inspect of lifting gear. Lifting permit with lifting plan approved on site before start work.

3

1

3

3

9

Cordon off the machine radius while operation

2

2

4

Musculoskeletal injury

Where uncertain, operator is to halt machine & perform a visual check of the blind spot. Banksman on site

3

Rare (1)

Remote (2)

Occasional (3)

Frequent (4)

Catastrophic (5)

5

10

15

20

Almost Certain (5) 25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5

Action Officer, Designation (Follow-up date)

Lifting Supervisor

Lifting Supervisor

Piling Operator cum supervisor (site), on going


4310-F02 (Rev 6)

List of Aspect / Impact and Hazard / Risks Company


Process Location

Rev No.

Edmund Peck – Senior Project Manager 25th Jun 2015

Approved by (Name, Designation, Date)

Last Review Date


No.

Work Activity

6.1

Mobilisation & demobilisation of machine using lorry crane

6.2

Unloading of machine parts from lorry crane

Movement of machine

Severity (S)


Unsafe access or ground condition

Parts or Machine detaching from the lifting gear while lifting

Blind spot at rear of machine beyond sight of operator

Likelihood (L)

Brandon Wong – Assistant Project Manager, Myo Hlaing – Senior Supervisor, Brandon Lee – Project Executive Saw Zaw Moe Aung – Site Supervisor

Conducted by (Names, Designations, Date)

6. Jack piling

Original Assessment Date

6.3

Page 22 to 46

25th Jun 2015

7

Next Review Date



25th Jun 2018

3. Risk Control

y t i r e v e S

d o o h i l e k i L



y t i r e v e S

d o o h i l e k i L


Toppling of crane while unloading machine parts

The operator of the lorry crane is to ensure that the crane stablilisers have been properly setup

4

2

8

Use additional steel plates for setting the jacks. Lifting Supervisor to ensure before lifting starts

3

1

3

Toppling of the lorry causing death to the rigger man

he piling operator and signal & rigger accompanying the machine is to ensure that the machine has been 4 properly shackled prior to lifting. Ensure all lifting gears used are within the calibration of 12 months.

2

8

Usual inspect of lifting gear. Lifting permit with lifting plan approved on site before start work.

3

1

3

3

9

Cordon off the machine radius while operation

2

2

4


Where uncertain, operator is to halt machine & perform a visual check of the blind spot. Banksman on site

3

Rare (1)

Remote (2)

Occasional (3)

Frequent (4)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5


6.3

6.4

Movement of machine (cont’d)

Assembly and dismantling of Machine

Severity (S)

Lifting Supervisor


Page 23 to 46

2. Risk Evaluation

3. Risk Control


Possible Accident / Ill Health & Personsat-Risk / Environmental Impact

Machine losing balance or even get trapped in soft ground

Damage to property, musculoskeletal injury

To overlay soft ground with steel plates or wooden beams where necessary.

3

3

9

Fumes from machinery

Air pollution / ill health

Monthly maintenance of machinery

3

1

3

Machine parts detaching from machine’s Main body


100% of all locking pin in place with secure pin at one end

4

2

8

Machine parts detaching from the lifting gears.

Toppling of crane causing death to the rigger man

Rigger is to ensure that the parts are properly shackled prior to lifting.

4

2

8

Greasy/Slippery machine parts.

Worker slipping while working on machine part during dismantling/ assembly

Proper maintain/ cleaning of machine

4

1

4

Counterweights slip from the counterweight frame

Damage to neighbouring properties, injuries to workmen

The base counterweight has a lock to prevent any movement. Visual inspection of lifting hook before any lift

4

1

4

Counterweights lifting hooks break

Sudden drop to ground causing injuries to workers

Rigger is to ensure that the parts are properly shackled prior to lifting

4

2

8

Likelihood (L)

Lifting Supervisor

4310-F02 (Rev 6)

List of Aspect / Impact and Hazard / Risks

Work Activity

Almost Certain (5)


No.



Occasional (3)

y t i r e v e S

d o o h i l e k i L

Frequent (4)



Operator Check the stability of equipment before operation

y t i r e v e S

d o o h i l e k i L

2

2



4

Piling Operator cum supervisor (site), on going Piling Operator to check all locking pin in place & in good condition before moving the machine

Ensure all lifting gears used are within the calibration period of 12 months.Additional plates to be weld to side of counterweights to further prevent movement. Workers not to step on greasy/ lubricated machine parts. Operator must go through machine checklist after assembly of machine.

3

1

3

3

1

3

3

1

3

3

1

3

3

1

3

Rare (1)

Remote (2)

Almost Certain (5)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5

Lifting Supervisor, on going


4310-F02 (Rev 6)

List of Aspect / Impact and Hazard / Risks 1. Hazard Identification

No.

6.3

6.4

Movement of machine (cont’d)

Assembly and dismantling of Machine

Severity (S)

2. Risk Evaluation

3. Risk Control





To overlay soft ground with steel plates or wooden beams where necessary.

3

3

9



Monthly maintenance of machinery

3

1

3

Machine parts detaching from machine’s Main body


100% of all locking pin in place with secure pin at one end

4

2

8

Machine parts detaching from the lifting gears.

Toppling of crane causing death to the rigger man


4

2

8

Greasy/Slippery machine parts.

Worker slipping while working on machine part during dismantling/ assembly


4

1

4

Counterweights slip from the counterweight frame

Damage to neighbouring properties, injuries to workmen

The base counterweight has a lock to prevent any movement. Visual inspection of lifting hook before any lift

4

1

4

Counterweights lifting hooks break

Sudden drop to ground causing injuries to workers

Rigger is to ensure that the parts are properly shackled prior to lifting

4

2

8

Work Activity

Likelihood (L)

Page 23 to 46


y t i r e v e S

d o o h i l e k i L




y t i r e v e S

d o o h i l e k i L

2

2


4

Piling Operator cum supervisor (site), on going Piling Operator to check all locking pin in place & in good condition before moving the machine

Ensure all lifting gears used are within the calibration period of 12 months.Additional plates to be weld to side of counterweights to further prevent movement. Workers not to step on greasy/ lubricated machine parts. Operator must go through machine checklist after assembly of machine.

3

1

3

3

1

3

3

1

3

3

1

3

3

1

3

Rare (1)

Remote (2)

Occasional (3)

Frequent (4)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5

4310-F02 (Rev 6)


No.

6.5

Work Activity

Hoisting with mini crawler crane

Severity (S)


Cranes have been erected & tested by approved crane contractors & Approved person & Appro ved Crane Operator. Lifting carried by lifting teams,lifting supervisor, rigger signalman

3. Risk Control

y t i r e v e S

d o o h i l e k i L

4

1


Serious injury or death to workers & properties

Falling object while hoisting materials

Serious injury or death to workers

Approve crane operator Lifting zone barricaded Only authorized personnel allowed in the lifting zone

4

2

8

Serious injury

Keep clear the lifting areas. Approved Crane Operator Lifting carried by lifting teams, lifting supervisor, rigger signalman Lifting zone barricaded

4

2

8

Push / pull down to ground when receiving loads on upper levels

Likelihood (L)

Page 24 to 46


Topple of crane

Hit by loads


Almost Certain (5)





Use of safety harness when working at building edges. Lifting carried by lifting teams, lifting supervisor, rigger signalman

Occasional (3)

4

Frequent (4)

1

4

4


SWP for Safe Use of Lifting Appliance & Gear, Grd condition checked by engineer in charge

SWP for lifting Appliance and Gear, Lifting permit approved before start work. Lifting permit approved before start work. Using tagline. Proper communication system avail between crane operators, lifting supervisor & signalman

Ensure load had reached the unloading bay or designated area control the load only with tag line, Do not push/pull the load while loading/unloading. Proper communication system avail between crane operators, lifting supervisor & signalman


y t i r e v e S

d o o h i l e k i L

3

1

3

3

1

3

3

1

3

3

1

3

Rare (1)

Remote (2)

Almost Certain (5)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5




4310-F02 (Rev 6)


No.

6.5


Work Activity

Hoisting with mini crawler crane


3. Risk Control / l e v e t L c k a s p i m R I

y t i r e v e S

d o o h i l e k i L

4

1

4

Cranes have been erected & tested by approved crane contractors & Approved person & Appro ved Crane Operator. Lifting carried by lifting teams,lifting supervisor, rigger signalman

Serious injury or death to workers & properties

Falling object while hoisting materials


Approve crane operator Lifting zone barricaded Only authorized personnel allowed in the lifting zone

4

2

8

Serious injury

Keep clear the lifting areas. Approved Crane Operator Lifting carried by lifting teams, lifting supervisor, rigger signalman Lifting zone barricaded

4

2

8

Push / pull down to ground when receiving loads on upper levels

Severity (S)


Topple of crane

Hit by loads

Likelihood (L)

Page 24 to 46


Use of safety harness when working at building edges. Lifting carried by lifting teams, lifting supervisor, rigger signalman

4

1

4


SWP for Safe Use of Lifting Appliance & Gear, Grd condition checked by engineer in charge

SWP for lifting Appliance and Gear, Lifting permit approved before start work. Lifting permit approved before start work. Using tagline. Proper communication system avail between crane operators, lifting supervisor & signalman

Ensure load had reached the unloading bay or designated area control the load only with tag line, Do not push/pull the load while loading/unloading. Proper communication system avail between crane operators, lifting supervisor & signalman


y t i r e v e S

d o o h i l e k i L

3

1

3

3

1

3

3

1

3

3

1

3

Rare (1)

Remote (2)

Occasional (3)

Frequent (4)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5

4310-F02 (Rev 6)


No.

6.5

Work Activity

Hoisting with mini crawler crane (cont’d)

Piling 6.6 operation

Severity (S)

Page 25 to 46


3. Risk Control

y t i r e v e S


All the lifting gea rs certified by approved person within 12 months. Lifting carried by lifting teams, lifting supervisor, rigger signalman Lifting team. Lifting carried by lifting teams, lifting supervisor, rigger signalman, Approved Crane Operator Only one crane allowed at a time, Coordinate between crane when more than one crane involved



y t i r e v e S

d o o h i l e k i L

3

1

3

4

1

4

4

1

4

Permit to hoist Proper communication system avail between crane operators Lifting supervisor & signalman

3

1

3

3

1

3

3

2

6

Break time for workers during operation

2

1

2

3

2

6

Competent Operator carryout daily inspection for any fault & rectify

2

1

2

2

8

Any services detected under ground, the diversion work carryout by specialist contractors, outsource to other contractors Service plan provided for site personnel

3

1

3

1

3


2

1

2

Failure of lifting gears

Collision with cranes




Unsafe act due to insufficient rest

Injury to worker or coworker

MOM approved and standard working hours of workers and operators

Toppling of piling frame


Piling machine parked on steel plate and level ground.

Live underground services, electrical, water line, sewer

Electrocution, Flood, suffocation,

Confirmation of under ground services, Keep away from existing services, Divert the affected services

4

Failure of piling frame cause damage to the piles installed


Monthly inspection/ maintenance check. Piling machine tested by the approved person

3

Occasional (3)

d o o h i l e k i L


Crane operation, Lifting supervisor Carryout visual check replace immediate for any damages Do not over load the lifting gears


Likelihood (L)


Almost Certain (5)




Rare (1)

Remote (2)

Frequent (4)

Almost Certain (5)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5





4310-F02 (Rev 6)


No.

6.5


Work Activity

Hoisting with mini crawler crane (cont’d)

Piling 6.6 operation

Severity (S)

Page 25 to 46


Failure of lifting gears


Collision with cranes




3. Risk Control

y t i r e v e S


All the lifting gea rs certified by approved person within 12 months. Lifting carried by lifting teams, lifting supervisor, rigger signalman Lifting team. Lifting carried by lifting teams, lifting supervisor, rigger signalman, Approved Crane Operator Only one crane allowed at a time, Coordinate between crane when more than one crane involved

4

d o o h i l e k i L

1


d o o h i l e k i L

4

Crane operation, Lifting supervisor Carryout visual check replace immediate for any damages Do not over load the lifting gears

3

1

3

Permit to hoist Proper communication system avail between crane operators Lifting supervisor & signalman

3

1

3


4

1

4

3

1

3

3

2

6


2

1

2

3

2

6


2

1

2

3

1

3

2

1

2



MOM approved and standard working hours of workers and operators

Toppling of piling frame


Piling machine parked on steel plate and level ground.

Live underground services, electrical, water line, sewer

Electrocution, Flood, suffocation,

Confirmation of under ground services, Keep away from existing services, Divert the affected services

4

2

8

Any services detected under ground, the diversion work carryout by specialist contractors, outsource to other contractors Service plan provided for site personnel

Failure of piling frame cause damage to the piles installed


Monthly inspection/ maintenance check. Piling machine tested by the approved person

3

1

3


Likelihood (L)


y t i r e v e S

Rare (1)

Remote (2)

Occasional (3)

Frequent (4)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5


6.6


Wo rk a t h ei gh t

M us cu lo sk el et al i nj ur y

Unsafe access & egress to work platform

d o o h i l e k i L

Personnel protective equipment safety harness when work more then 2m height

4

2

8


Steps provided

3

2

6

Pile holes, falling, tripping hazard


Cover all the holes to prevent fall, Barricade affected area

3

1

3

Hit by falling pile locking pin and pile wedge

Serious injury

Proper Personal Protective Equipment. Safe work procedure brief to workers

3

2

Hand / fingers caught in between mast & pile


Workman to push & control the pile movement on front facing surface of pile and not on the sides of the pile, unless is below the mast. Operator to ensure that workman is not in the vicinity when moving the machine parts. Workers to stay clear of machine moving parts.

4

Machine parts detaching during operation


Ensure all pin locks are fully installed with safety pins


To overlay soft ground with layer of compacted hardcore, steel plates or wooden beams where necessary. Broken RC pile heads can be used for additional stability

Piling operation (cont’d)

Severity (S)


y t i r e v e S

Machine losing balance or even get trapped in soft ground Likelihood (L)

Page 26 to 46


Work Activity


4310-F02 (Rev 6)

List of Aspect / Impact and Hazard / Risks

No.


Almost Certain (5)




Occasional (3)


y t i r e v e S

d o o h i l e k i L

All the open e dges should be barricaded to prevent fall from height Proper access/egress

3

1

3

Always ensure the ac cess reach the work platform, Do not run any cable or obstruct the access way

2

1

2

6

Ground workmen to keep clear when “pinman” is inserting/removing pin

2

1

2

2

8

Use crow bar / pile fork instead of bare hands

3

1

3

4

2

8

Operator must go through machine checklist before operating of machine

3

1

3

3

3

9


2

2

4

Frequent (4)


Rare (1)

Remote (2)

Almost Certain (5)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5




4310-F02 (Rev 6)


No.

6.6

2. Risk Evaluation

3. Risk Control



Wo rk a t h ei gh t

M us cu lo sk el et al i nj ur y

Personnel protective equipment safety harness when work more then 2m height

4

2

Unsafe access & egress to work platform


Steps provided

3

Pile holes, falling, tripping hazard


Cover all the holes to prevent fall, Barricade affected area

Hit by falling pile locking pin and pile wedge

Serious injury

Hand / fingers caught in between mast & pile


d o o h i l e k i L

8

All the open e dges should be barricaded to prevent fall from height Proper access/egress

3

1

3

2

6

Always ensure the ac cess reach the work platform, Do not run any cable or obstruct the access way

2

1

2

3

1

3

Proper Personal Protective Equipment. Safe work procedure brief to workers

3

2

6

Ground workmen to keep clear when “pinman” is inserting/removing pin

2

1

2


Workman to push & control the pile movement on front facing surface of pile and not on the sides of the pile, unless is below the mast. Operator to ensure that workman is not in the vicinity when moving the machine parts. Workers to stay clear of machine moving parts.

4

2

8

Use crow bar / pile fork instead of bare hands

3

1

3

Machine parts detaching during operation


Ensure all pin locks are fully installed with safety pins

4

2

8

Operator must go through machine checklist before operating of machine

3

1

3



To overlay soft ground with layer of compacted hardcore, steel plates or wooden beams where necessary. Broken RC pile heads can be used for additional stability

3

3

9


2

2

4


Piling operation (cont’d)

Likelihood (L)

y t i r e v e S

d o o h i l e k i L


y t i r e v e S

Work Activity

Severity (S)

Page 26 to 46


Rare (1)

Remote (2)

Occasional (3)

Frequent (4)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5

4310-F02 (Rev 6)


No.

6.7

Work Activity

Shifting of Piling machine

Poor ground stability

Machine parts detaching from Lifting gears 6.8

Dismantling of machine

Greasy/Slippery machine parts. Counterweight lifting hooks break

Presence of flammable material 6.9

Severity (S)

Likelihood (L)

Page 27 to 46



Property damage / Musculoskeletal injury

Operator ensure the ground stability. Do not park near excavation edges. Ensure the steel plates & Support beams are landed safety after every movements

Toppling of crane causing death to the rigger man Worker slipping while working on machine part during dismantling/ assembly Damage to neighbouring properties, injuries to workmen Sudden drop to ground causing injuries to workers

3. Risk Control

y t i r e v e S

d o o h i l e k i L

4

2



3


3

1

3


3

1

3

2

8

2

8

Regular inspection by Supervisor; Emergency Evacuation Plan

Serious injury or death to workers & nearby pple due to fire or explosion

Competent & licensed welder. Regular inspection of fire fighting equipment

4


1

4

4


3

Ensure all lifting gears used are within the calibration period of 12 months. Additional plates to be weld to side of counterweights to further prevent movement. Workers not to step on greasy/ lubricated machine parts. Operator must go through machine checklist after assembly of machine.

Competent & experienced welder; Regular house keeping; Fire watchman on site; cordon off work area; fire fighting equipment ready on site

d o o h i l e k i L

Machine load transfer bearing calculation


Occasional (3)


y t i r e v e S

8

Visual inspections of lifting hook before any lift


Welding Fire fighting eqpmt not suitable for electrical fire


Almost Certain (5)




Welder, on going

Frequent (4)

2

8

Emergency Evacuation Plan

3

1

3

Rare (1)

Remote (2)

Almost Certain (5)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5


4310-F02 (Rev 6)


No.

6.7


Work Activity

Shifting of Piling machine

Poor ground stability

Machine parts detaching from Lifting gears 6.8

Dismantling of machine

Greasy/Slippery machine parts. Counterweight lifting hooks break

Presence of flammable material 6.9



Property damage / Musculoskeletal injury

Operator ensure the ground stability. Do not park near excavation edges. Ensure the steel plates & Support beams are landed safety after every movements

Toppling of crane causing death to the rigger man Worker slipping while working on machine part during dismantling/ assembly Damage to neighbouring properties, injuries to workmen Sudden drop to ground causing injuries to workers

Severity (S)

Likelihood (L)

3. Risk Control

y t i r e v e S

d o o h i l e k i L

4

2




3


3

1

3


3

1

3

8

2

8

Regular inspection by Supervisor; Emergency Evacuation Plan


Competent & licensed welder. Regular inspection of fire fighting equipment

4

Welder, on going 2

8

Emergency Evacuation Plan

3

1

3

Rare (1)

Remote (2)

Occasional (3)

Frequent (4)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5

Almost Certain (5)


4310-F02 (Rev 6)


No.

6.9


Work Activity

Welding (cont’d)

Severity (S)

Page 28 to 46


3. Risk Control


y t i r e v e S

d o o h i l e k i L

4

1




y t i r e v e S

d o o h i l e k i L

4

Eme rgency Evacuati on Pl an

3

1

3

Finished work not checked upon completion

Burns to workers & nearby people due to outbreak of fire

Competent & experienced welder; Regular Housekeeping; Regular inspection of fire extinguisher equipment; fire watchman on site; cordon off work area; fire fighting equipment on site

Obstructed emergency escape route

Serious injury or death to workers & nearby people due to fire or explosion

Regular housekeeping

4

1

4

Regular inspection of fire escape route Emergency Evacuation Plan

3

1

3

Competent & licensed welder; Hot work permit approval

4

1

4

Regular inspection or test by Supervisor for flammable gases

3

1

3

Presence of flammable gases in structure / pipes / tanks


Hot Surface

Burn

Greasy & torn clothing

Burn

No indication of welded parts

Burn

Work piece not earthed separately

Electrical shock

Likelihood (L)


1

2



3

4

4

d o o h i l e k i L

Machine load transfer bearing calculation

Ensure all lifting gears used are within the calibration period of 12 months. Additional plates to be weld to side of counterweights to further prevent movement. Workers not to step on greasy/ lubricated machine parts. Operator must go through machine checklist after assembly of machine.

Competent & experienced welder; Regular house keeping; Fire watchman on site; cordon off work area; fire fighting equipment ready on site

y t i r e v e S

8

Visual inspections of lifting hook before any lift


Welding Fire fighting eqpmt not suitable for electrical fire

Page 27 to 46

Welder, on going

Competent & experience welder; Proper Personal Protective Equipment Hot work permit approval Clean & proper clothing wore before start of work; Proper Personal Protective Equipment Competent & experience welder; Proper Personal Protective Equipment, Hot work Permit Competent & experience welder; Proper Personal Protective Equipment; Monthly LEW inspection

Occasional (3)


3

1

3

3

1

3

3

1

3

3

1

3

Rare (1)

Remote (2)

Frequent (4)

Almost Certain (5)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5


4310-F02 (Rev 6)


No.

6.9

Severity (S)

3. Risk Control


d o o h i l e k i L

Finished work not checked upon completion

Burns to workers & nearby people due to outbreak of fire

Competent & experienced welder; Regular Housekeeping; Regular inspection of fire extinguisher equipment; fire watchman on site; cordon off work area; fire fighting equipment on site

4

1

Obstructed emergency escape route


Regular housekeeping

4

Competent & licensed welder; Hot work permit approval

4

Work Activity

Presence of flammable gases in structure / pipes / tanks

Welding (cont’d)


y t i r e v e S



Burn

Greasy & torn clothing

Burn

No indication of welded parts

Burn

Work piece not earthed separately

Electrical shock




y t i r e v e S

d o o h i l e k i L

4

Eme rgency Evacuati on Pl an

3

1

3

1

4

Regular inspection of fire escape route Emergency Evacuation Plan

3

1

3

1

4

Regular inspection or test by Supervisor for flammable gases

3

1

3

Competent & experience welder; Proper Personal Protective Equipment; Monthly LEW inspection

3

1

3

3

1

3

3

1

3

3

1

3

Rare (1)

Remote (2)

Occasional (3)

Frequent (4)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5

Almost Certain (5)


4310-F02 (Rev 6)


No.

6.9


Work Activity

Severity (S)


Competent & experience welder; Proper Personal Protective Equipment; monthly equipment check


y t i r e v e S

d o o h i l e k i L

3

1

3

3

1

3

3

1

3

3

1

3

3

1

3

3

1

3

Electrical shock

Wet area

Electrical shock

Poor earthing of area

Electrical shock

Incorrect shade of filter glass

Eye injury to workers

Striking of arc

Bodily injury due to hot flying fragments

Absence of screens

Arc radiation burns

Emission of welding fumes & gases

Adverse health effect

Well ventilated area; Proper Personal Protective Equipment

3

1

3

Cables damage or cut by machine moving parts

Electrical shock

Designated area for storing hanging of cables; Proper Personal Protective Equipment

3

2

6

Likelihood (L)

Page 29 to 46


Damaged leads, holders & connections

Welding (cont’d)


Welder, on going

Competent & experience welder; Proper Personal Protective Equipment Hot work permit approval Clean & proper clothing wore before start of work; Proper Personal Protective Equipment Competent & experience welder; Proper Personal Protective Equipment, Hot work Permit

Hot Surface

Likelihood (L)

Page 28 to 46

Competent & experience welder; Proper Personal Protective Equipment; monthly equipment check Competent & experience welder; Proper Personal Protective Equipment; monthly equipment check Competent & experience welder; Proper Personal Protective Equipment; monthly equipment check Competent & experience welder; Proper Personal Protective Equipment; monthly equipment check Competent & experience welder; Proper Personal Protective Equipment; monthly equipment check

Occasional (3)

Frequent (4)


y t i r e v e S

d o o h i l e k i L



Welder, on going

Monthly equipment check

2

1

2

Rare (1)

Remote (2)

Almost Certain (5)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5


4310-F02 (Rev 6)


No.


Work Activity

Damaged leads, holders & connections

6.9

Severity (S)

2. Risk Evaluation Possible Accident / Ill Health & Personsat-Risk / Environmental Impact Electrical shock



y t i r e v e S

d o o h i l e k i L

3

1

3

3

1

3

3

1

3

3

1

3

3

1

3

3

1

3

Competent & experience welder; Proper Personal Protective Equipment; monthly equipment check Competent & experience welder; Proper Personal Protective Equipment; monthly equipment check Competent & experience welder; Proper Personal Protective Equipment; monthly equipment check Competent & experience welder; Proper Personal Protective Equipment; monthly equipment check Competent & experience welder; Proper Personal Protective Equipment; monthly equipment check Competent & experience welder; Proper Personal Protective Equipment; monthly equipment check

Wet area

Electrical shock

Poor earthing of area

Electrical shock

Incorrect shade of filter glass

Eye injury to workers

Striking of arc

Bodily injury due to hot flying fragments

Absence of screens

Arc radiation burns

Emission of welding fumes & gases

Adverse health effect

Well ventilated area; Proper Personal Protective Equipment

3

1

3


Electrical shock

Designated area for storing hanging of cables; Proper Personal Protective Equipment

3

2

6

Welding (cont’d)

Likelihood (L)

Page 29 to 46

y t i r e v e S


d o o h i l e k i L


Welder, on going

Monthly equipment check

2

1

2

Rare (1)

Remote (2)

Occasional (3)

Frequent (4)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5

Almost Certain (5)


4310-F02 (Rev 6)


No.

6.10

6.11


Work Activity

Cutting-off of piles using concrete cutter, grinder & breaker and air compressor

Human factor

6.12

Human behaviour

6.13

Storage of Material

Severity (S)

Page 30 to 46



3. Risk Control

y t i r e v e S

d o o h i l e k i L



y t i r e v e S

d o o h i l e k i L


H it b y F ly in g o bj ec t

E ye i nj ur y

Use of Personnel protective equipment

3

1

3

High Noise

Noise induced Deafness

Use of Ear plug

3

1

3

Generation of noise

Noise pollution

Use of Ear plug

3

1

3

Dep letion of resource s

Switch off appliances or machineries when not in used

3

1

3

3

2

6

Monthly Equipment Check

2

1

2

3

1

3

Intermittent rest time

2

1

2

Use of powe r

Designated area for storing hanging of cables;

Electrical shock

Long exposure to sun

Sun burnt, heat stroke

Exposure to bad weather

Bodily injury due to lightning strike

Stop work when heavy rain

3

2

6

Provide shelter at work site

2

1

2

Manual handling of materials more than 25kg

M us cu lo sk el et al

E xt ra ma np ow er t o r emo ve m at er ia ls

2

2

4

Use of lifting equipments such as pellet jack

2

1

2



MOM approved and standard working hrs of workers & operators

3

2

6


2

1

3

Spillage of lubricate

Land & water pollution

Use drip tray

3

1

3

Proper housekeeping

3

1

3

Toppling of R.C. piles

Damage to 3 rd party property, injuries to workman

Proper stacking of R.C. piles

3

1

3

Cordon off work area from public

3

1

3

Proper Personal Protective Equipment 1. Put on light & long sleeve clothing 2. Drink plenty of water

Occasional (3)

Frequent (4)




Likelihood (L)


Rare (1)

Remote (2)

Almost Certain (5)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5



4310-F02 (Rev 6)


No.

6.10

6.11


Work Activity

Cutting-off of piles using concrete cutter, grinder & breaker and air compressor

Human factor

6.12

Human behaviour

6.13

Storage of Material

Severity (S)

Page 30 to 46



3. Risk Control

y t i r e v e S

d o o h i l e k i L



y t i r e v e S

d o o h i l e k i L


H it b y F ly in g o bj ec t

E ye i nj ur y

Use of Personnel protective equipment

3

1

3

High Noise

Noise induced Deafness

Use of Ear plug

3

1

3

Generation of noise

Noise pollution

Use of Ear plug

3

1

3

Use of powe r

Dep letion of resource s

Switch off appliances or machineries when not in used

3

1

3

3

2

6

Monthly Equipment Check

2

1

2

3

1

3

Intermittent rest time

2

1

2

Designated area for storing hanging of cables;



Electrical shock

Long exposure to sun

Sun burnt, heat stroke

Exposure to bad weather

Bodily injury due to lightning strike

Stop work when heavy rain

3

2

6

Provide shelter at work site

2

1

2

Manual handling of materials more than 25kg

M us cu lo sk el et al

E xt ra ma np ow er t o r emo ve m at er ia ls

2

2

4

Use of lifting equipments such as pellet jack

2

1

2



MOM approved and standard working hrs of workers & operators

3

2

6


2

1

3

Spillage of lubricate

Land & water pollution

Use drip tray

3

1

3

Proper housekeeping

3

1

3

Toppling of R.C. piles

Damage to 3 rd party property, injuries to workman

Proper stacking of R.C. piles

3

1

3

Cordon off work area from public

3

1

3

Likelihood (L)

Proper Personal Protective Equipment 1. Put on light & long sleeve clothing 2. Drink plenty of water


Rare (1)

Remote (2)

Occasional (3)

Frequent (4)

Catastrophic (5)

5

10

15

20

25

Major (4)

4

8

12

16

20

1 to 3

Low risk

Moderate (3)

3

6

9

12

15

4 to 14

Medium risk

Minor (2)

2

4

6

8

10

15 to 25

High risk

Insignificant (1)

1

2

3

4

5

PECK BROT HERS Construction Pte Ltd Saf e Wor k Pr ocedur es

Date th

9 May 2011


Almost Certain (5)

Saf e Pr actices in Piling Wor ks Page 1 / 7

Rev No : 1

Doc No: SWP-SPP

Description of Change Initial release for ISO 9001:2008, ISO 14001:2004 & OHSAS 18001:2007

Rev No 0


Date th

9 May 2011


Rev No : 1

Doc No: SWP-SPP

Description of Change Initial release for ISO 9001:2008, ISO 14001:2004 & OHSAS 18001:2007

Rev No 0


1.


Rev No : 1

Doc No: SWP-SPP

Purpose The purpose of this procedure is to provide guidance for carrying out piling operation safely, prevent injury to person involved in the operation and incident to neighbour.

2.

Scope This procedure is applicable to all project sites.

3.

Related documents/reference

3.1 3.2 3.3

Workplace Safety & Health Act 2006 (Cap 354A) Workplace Safety & Health (Constructions) Regulations 2007 SPP-F01 Permit to Pile

4.

Responsibility

4.1

The Project Manager/ designated Person-in-Charge shall

4.2

4.1.1

Ensure that the following arrangement are planned before work commences on site: Detail of ground conditions obtained a) Effect of piling on adjacent properties considered b) Suitable plant and equipment, ladder, etc. c) Measure to prevent falls from piling rig or when pitching of piles d) Underground services locations e) Maintenance of servicing of plant f) Noise control measures and hearing protection for operatives g) Protection of public or other effected h) Protective clothing and equipment i) Training for supervisory staff and operatives j) Method statement agreed k)

4.1.2

Ensure that all preparation works and requirements are carried out as planned.

4.1.3

Ensure that no person is allowed to operate piling plant or equipment or enter piling areas unless authorised.

4.1.4

Check that work in carried out as planned and that operatives use all safety equipment, protective clothing, etc as required.

4.1.5

Ensure that all plant and equipment in use is checked regularly during the working shift and any defect noted or reported is rectified, and where any defect could affected safe use of any piling plant or equipment, take it out of use immediately.

4.1.6

Ensure that all the control measures identified in risk assessment are being implemented.

The Site Supervisor (SS) / Foreman


4.3


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The SS / foremen is responsible for continual observational safety checks of their work operations and to enforce the procedure, any unsafe acts or conditions identified shall rectified immediately. Employees / Piling Crew Members It is the responsibility of the employees to understand and adhere to the procedures and to follow the instructions of the SS / Foreman. Employees shall bring to the management’s attention any unsafe or hazardous conditions or acts that may cause injury to either themselves or any other employees.

4.4

Safety Personnel Safety Personnel is responsible for the development, implementation and administration of this procedure. This involves: 4.4.1 Maintaining records and reviewing on hazard assessments 4.4.2 Assist the project team on conducting hazards assessment of the activities. 4.4.3 Provide training and technical assistance to supervisor on the proper use, care and cleaning of approved personal protective equipment. 4.4.4 Periodically re-evaluating the suitability of previously selected personal protective equipment. 4.4.5 Reviewing, updating and evaluating the overall effectiveness of this procedure.

5.

Procedure

5.1

Control Measures 5.1.1

Stability of adjacent structures Where there is any question of the stability of structure adjoining areas to be piled, the structures shall be supported where necessary by sheet piling, shoring, under pinning, bracing or other means in accordance with the design of a professional engineer to prevent injury to any person.

5.1.2

Inspection and Permit-to-Work a) All pile driving equipment shall be inspected daily/regularly by a designated person before the start of work and every defect shall be immediately corrected before piling driving commences. Every piling frame and its attachment shall be thoroughly examined by a authorized b) examiner at least once in every 12 months. In additional Permit-to-Work shall be obtained form the site management before c) commencement of piling operation.

5.1.3

Protection of Operator The operator of every pile drivers shall be protected from falling objects, steam, cinders and water by substantial covering.

5.1.4

Qualifications of Operator Each member of the pile driving crew shall be properly instructed in the work he is to do and the operation shall be in charge by a designated person, who shall personally direct the work and give operating signals.

5.1.5

Handling of Piles The preparation of pile shall be carried out at a safe distance from the driving operation. During the hoisting of piles, all persons not actually engaged in operating the equipment and handling the piles shall be kept out of the area.



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5.1.6

Pile Drivers not in use When the driver is not in use the hammer shall be choked or blocked in the leads or lowered to the ground.

5.1.7

Ladders A ladder extending from the bottom of the leads to the overhead sheaves shall be permanently attached to the structure supporting the leads.

5.1.8

Machine Mobilisation Driven Steel Micropile Rig or Crane or excavator is mobilized into site using jack a) lorry. Steel plates 6mx4nos and 3mx2nos to send in by 10ton lorry. May need additional b) steel plates at entrance culverts. Depending on site access as well for additional steel plates if ground condition is bad. E.g. marine clay area such as Tanjong Katong areas.

5.1.9

Setup of Jack-In Pile(JP) equipment a)

Setup for JP3, JP6 to JP12 i) The base of the equipment is mobilized in using lorry cranes. The lorry cranes range from 25ton to 40ton depending on which mach base. The base is then set onto 2nos of 6m steel plates. nd ii) The 2 part of machine, i.e. lower body is then stacked onto the base. The 2 parts are connected using 24nos of bolts. rd nd iii) The 3 part of machine, i.e. main body is stacked onto the 2 part and connected using 8 pins. iv) The mast is fitted next. The connection is done using 6 pins. v) Counterweight frame is then fitted on the machine, 4 pins are used to connect the frame to the machine. vi) The power pac stand is bolted to the machine using 6 bolts and the powerpac is the put onto the stand and secured firmly using 4 pins. vii) The counterweights are then stacked neatly on the counterweight frame. viii) After all counterweights are in place, the standing platform will be erected on the last counterweights. The platform and all counterweights are secured by tying a chain around it.

b)

Setup for JP4 and 5 i) The main body together with powerpac are mobilized to site using a 12ft” lowbed trailer. ii) The mast is fitted to either the centre (25ton lorry crane) or side (20ton lorry crane) of the machine using 6 pins. iii) The counterweight frame is then fitted using 4 pins. iv) The counterweights are then stacked neatly on the counterweight frame. v) After all counterweights are in place, the standing platform will be erected on the last counterweights. The platform and all counterweights are secured by tying a chain around it.

5.1.10 Dismantling of Jack-In Pile(JP) equipment a)

Dismantling for JP3, JP6 to JP12 i) The standing platform and counterweights are first unloaded onto the ground. ii) The power pac is dismantled followed by its frame. iii) The counterweight frame is then dismantled.



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iv) The mast will then be dismantle using by lorry crane ranging from 10ton to 25ton depending on the position of the mast, rd v) The 3 part of machine, i.e. main body is disconnected by dismantling the 8 pins. nd vi) The 2 part of machine, i.e. lower body is disconnected from the base by dismantling 24nos of bolts. vii) The base of the equipment is mobilized in using lorry cranes. The lorry cranes range from 25ton to 40ton depending on which mach base. The base is then set onto 2nos of 6m steel plates.

b)

Dismantling for JP4 and 5 i) The platform and all counterweights are first unloaded onto the ground.. ii) The counterweight frames is then disconnected from the machine by dismantling 4 pins. iii) The mast will be disconnected by taking out the 6 pins and dismantled from the machine by using either 20ton or 25ton lorry crane depending on the position of the mast. iv) The main body together with powerpac will then be demobilized to site using a 12ft” lowbed.

5.1.11 Movement of Jack-in Pile(JP) Machine a)

The ground is to be laid with steel plates before any machine manoeuver.

b)

Three watchmen will be position at the rear and side of the machine to warn operator should there be any obstruction to the jacks or sliding beam.

c)

When the 4 jacks are being jacked down, the machine is hence elevated. Depending on which direction to move, the sliding beam can slide left to right or the machine body can slide front and rear along the jack beams.

d) After the 4 jacks are being released, the machine body can slide to left or right along the sliding beam. The jack beams can also slide either front or rear depending on the pile position. e)

For JP4 and JP5 which are on tracks, the machine can move by itself in whichever directions. However, steel plates need to be laid so that the weight of the machine can be spread evenly onto the ground.

5.1.12 Working Platform on Piling Frame Where a structural tower supports the leads, suitable working platform of adequate a) strength shall be provided on levels of the leads at which it is necessary for men to work. The platform shall be provided with safety railings and toe board on all sides, except b) on the hammer or lead side of the platform. Where such platform can not be provided, a safety belt/harness shall be used. c) When R.C pile inserted in to the mast, pin man have to hook up all safety harness d) to prevent the R.C pile falling. Ensure safety harness hook up at all times. e) During movement of platform, pin man have to coordinated with operator if any f) movement to the working platform. During movement of piling frame, pin man should not be at the working platform. g) Pin man will use the proper access to go up to the working platform. h)



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5.1.13 Pile Testing The testing of piles shall be conducted under the direct supervision of a designated a) person. Reasonably practical measures shall be taken to warn persons not to approach with b) 50m of a pile under test. Under no circumstances shall anyone permitted to approach a test pile while the c) process of increasing or decreasing test loading is being carried out. While the process of increasing or decreasing test loading is not in progress anyone d) approaching a test pile for any purpose shall only permitted to do so under the specific instruction of the designated person who shall take reasonably practical measures to ascertain that the kentledge is in a stable condition and is safe for approach. 5.1.14 Footing Before placing or advancing a pile driver, the ground shall be inspected by a a) designated person and firm and level footing should be provided, timber or steel plate should be provided when necessary. b) After placing or advancing a pile driver, inspection and correction of the footing shall be made to maintain the stability. 5.1.15 Drive Pile / Sheet Piling Ensure that there is a safe access and working position for pitching of piles. a) If work from a ladder is necessary, a safety harness shall be worn and attached b) securely to a firm anchorage point. Kentledge and Kelly blocks must be in good order, place securely and sufficient for c) the operation. Wear safety helmet, footwear, hearing protector and other PPE required. d) Ensure all hammers, swivels, anchors, pile helmets; guides etc have been inspected e) regularly. Ensure that the winch control the hammer and cover for moving part in good f) condition before use. Ensure all underground services have been located and identified before work g) starts. Ensure that crane / piling rig is on a firm level base. If there is any doubt then h) excavator mats will be used. Stack pile safely and ensure that they are not liable to topple over. i) Use tag lines when guiding piles during lifting / positioning operations. j) Ensure that operations are clear of overhead cables and obstructions during any of k) the work. Follow instructions when work take place next to properties, highways, railways, l) public area etc. and ensure the site is left safe and secure when left unattended, especially with regards to children. 5.2

Record Keeping 5.2.1

5.3

Safety Personnel shall keep all the records as per requirements such as Personal protective equipment issuing record a) Employees training records b) Examination / test certificate of the equipment c) Equipment inspection & maintenance records d) Permit-to-Work records e)

Non-conformance



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5.3.1

In case of any non-conformance such as expired certificates, damage /non-availability of proper safety device etc. the Safety Personnel shall inform the PIC to stop the operation immediately.

5.3.2

The PIC shall take actions against the responsible parties and shall ensure that the rectification work has been done accordingly.

01) Jack-In Pile Submission

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