Inventory of Work Activities
Company : HYDRO ONE PTE LTD
Date:27-08-2021
Remarks
No
1
Location
Store (Pioneer)
Process
Prepare for site work
Work Activities
1. Manual handling and storage
2. Drilling works using electrical drill machine
3. Cutting and grinding work(use electrical machine)
4. Use of gas cutter
5. Welding works
6. Housekeeping
RISK ASSESSMENT
Company:
Hydro one pte ltd
RA Leader:
Anandnan Dhinesh
Approved By:
Process:
Prepare for site work
RA Members 1:
Lu Xingang
Signature:
Activity Location:
Store (Pioneer)
RA Members 2:
Original Assessment Date:
27-08-2021
RA Members 3:
Name:
Last Review Date:
27-08-2021
RA Members 4:
Designation:
Next Review Date:
26-08-2024
RA Members 5:
Date:
1. Hazard Identification
No
1
Activity
Manual
handling
and
storage
Hazard
Improper
handling of
materials
Revision No. 00
2. Risk Evaluation
Possible
Accident / Ill
Health &
Persons-at-Risk
Cuts
3. Risk Control
Initial Risk
Index
Existing Risk Control

Use trolley. secure material before
transport

Buddy system for long or heavy
materials (max. 25kg)

Slow down when approaching blind
spots.

Pre Task Briefing.

Wear hand gloves and safety shoes
properly.
Bodily Injuries
Likelihoo
d
Severity
Catastrophic (5)
Document No.00
S
L
R
3
3
9
Additional Risk Control
Measures

Close supervising.
Rare
(1)
Remote
(2)
Occasional
(3)
Frequent
(4)
Almost Certain (5)
5
10
15
20
25
Major (4)
4
8
12
16
20
Moderate (3)
3
6
9
12
15
Minor (2)
Negligible (1)
2
1
4
2
6
3
8
4
10
5
Residual
Risk Index
S
L
R
3
2
6
Action by:
Designation
(Follow up-date)
Supervisor
1. Hazard Identification
No
Activity
Hazard
Improper
storage
2
Drilling
works
using
electrical
drill
machine
Moving
machine
parts
2. Risk Evaluation
Possible
Accident / Ill
Health &
Persons-at-Risk
Bodily Injuries
Bodily Injuries
3. Risk Control
Initial Risk
Index
Existing Risk Control

Barricade and install warning
signage

Materials stored should not exceed
1.5m height.

Do not store materials close to the
opening or edge of building

All materials shall be raised above
floor level in store.

Maintain good housekeeping.

Chemical and gas don’t put inside
the store.

Machine guard and emergency
switch in place.

No loose clothing / jewelry.

Disconnect and remove power
source when not in use.

Do not modify.

Wear proper hand gloves.
Cuts
Likelihoo
d
Severity
Catastrophic (5)
S
L
R
3
2
6
3
2
6
Additional Risk Control
Measures
Residual
Risk Index
Action by:
Designation
(Follow up-date)
S
L
R
Refresher training to
workforce to remind on
RA/SWP control
measures.
3
1
3
Supervisor
Refresher training to
workforce to remind on
RA/SWP control
measures.
3
1
3
Supervisor :
Rare
(1)
Remote
(2)
Occasional
(3)
Frequent
(4)
Almost Certain (5)
5
10
15
20
25
Major (4)
4
8
12
16
20
Moderate (3)
3
6
9
12
15
Minor (2)
Negligible (1)
2
1
4
2
6
3
8
4
10
5
1. Hazard Identification
No
Activity
Hazard
Equipment
Handling
- Improper
Use
- Damaged
2. Risk Evaluation
Possible
Accident / Ill
Health &
Persons-at-Risk
Bodily Injury
3. Risk Control
Initial Risk
Index
Existing Risk Control

Cordon work area (Barricade,
warning signage).

Machine guard and emergency
switch in place.

Monthly maintenance.

Physical checks on equipment.

Pre use checks.

Competent LEW monthly inspection
for electrical tools/machine.

Perform by trained, experienced and
competent person.

Follow speed recommended by
manufacturer

Disconnect and remove power
source when not in use or before
changing bits.

Wear proper PPE(hand gloves,
shoes,)
Cut.
Likelihoo
d
Severity
Catastrophic (5)
S
L
R
4
2
8
Additional Risk Control
Measures

Full time supervision

Damaged equipment
store one place
provide “not in use”
signage.
Rare
(1)
Remote
(2)
Occasional
(3)
Frequent
(4)
Almost Certain (5)
5
10
15
20
25
Major (4)
4
8
12
16
20
Moderate (3)
3
6
9
12
15
Minor (2)
Negligible (1)
2
1
4
2
6
3
8
4
10
5
Residual
Risk Index
S
L
R
4
1
4
Action by:
Designation
(Follow up-date)
Supervisor
1. Hazard Identification
No
Activity
Hazard
Electrical
hazards
Dust
2. Risk Evaluation
Possible
Accident / Ill
Health &
Persons-at-Risk
3. Risk Control
Initial Risk
Index
Existing Risk Control

Cables to be hung clear of wet
ground.

Full time supervision

Disconnect and remove power
source when not in use or before
changing bits

No modification of tools / equipment.

Monthly maintenance.

Competent LEW monthly inspection
for electrical tools/machine.

Wear proper PPE.
Eye Irritation

Respiratory
problem
Sweep or vacuum the work area
after work.

Wetting of workplace.

Briefing during toolbox meeting

Wear dust mask, safety googles.
Electric Shock
Likelihoo
d
Severity
Catastrophic (5)
S
L
R
4
2
8
3
2
6
Additional Risk Control
Measures
Residual
Risk Index
Action by:
Designation
(Follow up-date)
S
L
R
Refresher training to
workforce to remind on
RA/SWP control
measures.
4
1
4
Supervisor
Refresher training to
workforce to remind on
RA/SWP control
measures.
3
1
3
Supervisor
Rare
(1)
Remote
(2)
Occasional
(3)
Frequent
(4)
Almost Certain (5)
5
10
15
20
25
Major (4)
4
8
12
16
20
Moderate (3)
3
6
9
12
15
Minor (2)
Negligible (1)
2
1
4
2
6
3
8
4
10
5
1. Hazard Identification
No
Activity
Hazard
Noise
3
Cutting
and
grinding
works.
Fire (Sparks
from cutter)
2. Risk Evaluation
Possible
Accident / Ill
Health &
Persons-at-Risk
3. Risk Control
Initial Risk
Index
Existing Risk Control
Hearing
discomfort.

Noise barrier to be installed at noisy
work area if possible.
Deafness

Noise level to be monitored.
Noise pollution

Machineries to be maintained
properly.

Job rotation.

Double hearing protection (for noise
exceeding 85dB)

Briefing during toolbox meeting

Ensure PPE is worn. (ear plug)
Burns, bodily
injuries/death

Fire blankets to be set up to shield
workers from fire hazards
Property damage

Fire watchman to be present when
grinding/cutting is going on
Explosion

Only Competent person to carried
angle cutting work.

Flammable of combustible materials
shall be stored away from the work
area.
Likelihoo
d
Severity
Catastrophic (5)
Additional Risk Control
Measures
S
L
R
3
2
6

Close supervision
5
2
10
Residual
Risk Index
Action by:
Designation
(Follow up-date)
S
L
R
3
1
3
Supervisor :

Engage fire watch 5
with proper training at
the time of cutting
and grinding work.
1
5
Supervisor

After completion of
hot work standby the
firewatcher for min of
30 Mins.
Rare
(1)
Remote
(2)
Occasional
(3)
Frequent
(4)
Almost Certain (5)
5
10
15
20
25
Major (4)
4
8
12
16
20
Moderate (3)
3
6
9
12
15
Minor (2)
Negligible (1)
2
1
4
2
6
3
8
4
10
5
1. Hazard Identification
No
Activity
Hazard
Poisonous
fumes
Noise
2. Risk Evaluation
Possible
Accident / Ill
Health &
Persons-at-Risk
Initial Risk
Index
Existing Risk Control
Respiratory
illness/unconscio
usness
Deafness
3. Risk Control

Fire extinguisher must be readily
available and in good condition at
the work area

Wear face shield and welding
gloves.

Provide localized mechanical
ventilation.

Close supervision

Specific briefing on hot works to be
given during toolbox meeting

Wear mask properly.

Noise barrier to be installed at noisy
work area (where possible).

Machineries to be maintained
properly

Job rotation

Double hearing protection (for noise
exceeding 85dB)
Noise pollution
Likelihoo
d
Severity
Catastrophic (5)
S
L
R
3
2
6
3
2
6
Additional Risk Control
Measures
Residual
Risk Index
Action by:
Designation
(Follow up-date)
S
L
R
Refresher training to
workforce to remind on
RA/SWP control
measures.
3
1
3
Supervisor
Refresher training to
workforce to remind on
RA/SWP control
measures.
3
1
3
Supervisor
Rare
(1)
Remote
(2)
Occasional
(3)
Frequent
(4)
Almost Certain (5)
5
10
15
20
25
Major (4)
4
8
12
16
20
Moderate (3)
3
6
9
12
15
Minor (2)
Negligible (1)
2
1
4
2
6
3
8
4
10
5
1. Hazard Identification
No
Activity
Hazard
Poor Cable
Management
Equipment /
Tools
Handling
- Improper
Use
- Damaged
2. Risk Evaluation
Possible
Accident / Ill
Health &
Persons-at-Risk
Bodily Injury due
to Slip/Trip/Fall
Electric Shock
Initial Risk
Index
Existing Risk Control

Close supervision

Briefing during toolbox meeting

Ensure PPE is worn. (ear plug

Elevate cables above ground using
cable stand

Cables to be hung on nonconductive supports

Cables to be hung clear of wet
ground

Briefing during toolbox meeting

Cordon work area (Barricade,
warning signage)
Bodily Injury
Cuts
3. Risk Control

Ensure machine guards and
emergency switch in place

Ensure that the cutting disc, guard
and attachments (including handle)
are secure and correctly fitted.
Likelihoo
d
Severity
Catastrophic (5)
S
L
R
3
2
6
4
2
8
Additional Risk Control
Measures
Residual
Risk Index
Action by:
Designation
(Follow up-date)
S
L
R
Refresher training to
workforce to remind on
RA/SWP control
measures.
3
1
3
Supervisor

Full time supervision
4
1
4
Supervisor

Refresher training to
workforce to remind
on RA/SWP control
measures.
Rare
(1)
Remote
(2)
Occasional
(3)
Frequent
(4)
Almost Certain (5)
5
10
15
20
25
Major (4)
4
8
12
16
20
Moderate (3)
3
6
9
12
15
Minor (2)
Negligible (1)
2
1
4
2
6
3
8
4
10
5
1. Hazard Identification
No
4
Activity
Gas
cutting
Work
Hazard
Fire
2. Risk Evaluation
Possible
Accident / Ill
Health &
Persons-at-Risk
Initial Risk
Index
Existing Risk Control
Burns, bodily
injuries/death

Inspect the cutting disc for damage.
Do not use damaged grinding disc.

Pre Task briefing

Pre use checks

Perform by trained, experienced and
competent person

Monthly LEW Checks

Disconnect and remove power
source when not in use or before
changing bits

No modification of tools / equipment

Fire watchman and fire extinguisher
to be present when gas cutting
going on.

Inspect the work area before start
work. Remove flammable material.
Property damage
Explosion
3. Risk Control

Perform by trained, experienced and
competent person.

Full time supervision
Likelihoo
d
Severity
Catastrophic (5)
S
L
R
5
2
10
Additional Risk Control
Measures
Residual
Risk Index
S
L
R

Engage fire watch 5
with proper training at
the time of gas
cutting work.
1
5

After completion of
hot work standby the
firewatcher for min of
30 Mins.
Rare
(1)
Remote
(2)
Occasional
(3)
Frequent
(4)
Almost Certain (5)
5
10
15
20
25
Major (4)
4
8
12
16
20
Moderate (3)
3
6
9
12
15
Minor (2)
Negligible (1)
2
1
4
2
6
3
8
4
10
5
Action by:
Designation
(Follow up-date)
Supervisor
1. Hazard Identification
No
Activity
Hazard
Poor hose
management
Hose
Improper
use
2. Risk Evaluation
Possible
Accident / Ill
Health &
Persons-at-Risk
3. Risk Control
Initial Risk
Index
Existing Risk Control

Gas cylinder must be stand and
secure. Use cylinder stand.

Wear proper PPE.

Elevate hose above ground

Hose do not put sharp edge.

Pre task briefing
Burns

Do not use damaged hose.
Bodily Injuries

Ensure flashback arrester and
pressure regulator fix properly.

Before start work must check full
hose and every joint part of hose.
Must use soap oil.

Full time supervision

Pre Task briefing

Don’t do any modification
Bodily Injuries
Likelihoo
d
Severity
Catastrophic (5)
S
L
R
4
2
8
4
2
8
Additional Risk Control
Measures
Residual
Risk Index
Action by:
Designation
(Follow up-date)
S
L
R
Refresher training to
workforce to remind on
RA/SWP control
measures.
4
1
4
Supervisor
Refresher training to
workforce to remind on
RA/SWP control
measures.
4
1
4
Supervisor
Rare
(1)
Remote
(2)
Occasional
(3)
Frequent
(4)
Almost Certain (5)
5
10
15
20
25
Major (4)
4
8
12
16
20
Moderate (3)
3
6
9
12
15
Minor (2)
Negligible (1)
2
1
4
2
6
3
8
4
10
5
1. Hazard Identification
No
5
Activity
Welding
work
Hazard
Electrical
hazards
Fire
2. Risk Evaluation
Possible
Accident / Ill
Health &
Persons-at-Risk
Initial Risk
Index
Existing Risk Control
Electric Shock

Check connection of earth cable.
Connect properly

Pre Task briefing

Pre use checks

Perform by trained, experienced and
competent person

Monthly LEW Checks

No modification of tools / equipment

Use welding gloves.

Fire watchman and fire extinguisher
to be present when gas cutting
going on.

Inspect the work area before start
work. Remove flammable material.

Perform by trained, experienced and
competent person.

Full time supervision
Bodily Injury
Burns, bodily
injuries/death
Property damage
Explosion
3. Risk Control
Likelihoo
d
Severity
Catastrophic (5)
Additional Risk Control
Measures
S
L
R
4
2
8
Refresher training to
workforce to remind on
RA/SWP control
measures.
5
2
10
Residual
Risk Index
Action by:
Designation
(Follow up-date)
S
L
R
4
1
4
Supervisor

Engage fire watch 5
with proper training at
the time of Welding
work.
1
5
Supervisor

After completion of
hot work standby the
firewatcher for min of
30 Mins.
Rare
(1)
Remote
(2)
Occasional
(3)
Frequent
(4)
Almost Certain (5)
5
10
15
20
25
Major (4)
4
8
12
16
20
Moderate (3)
3
6
9
12
15
Minor (2)
Negligible (1)
2
1
4
2
6
3
8
4
10
5
1. Hazard Identification
No
Activity
Hazard
Poisonous
fumes
6
Houseke
eping.
Trip & fall
2. Risk Evaluation
Possible
Accident / Ill
Health &
Persons-at-Risk
Initial Risk
Index
Existing Risk Control
Respiratory
illness/unconscio
usness
Physical Injuries
3. Risk Control

Provide localized mechanical
ventilation.

Close supervision

Specific briefing on hot works to be
given during toolbox meeting

Wear mask properly.

Do not leave any tools or materials
unattended.

Ensure tools are kept in tool box and
stored in storage yard.

Unwanted materials and rubbish to
be disposed should be throw in a
container bin or thrash bag after
work.
Likelihoo
d
Severity
Catastrophic (5)
S
L
R
3
2
6
3
1
3
Additional Risk Control
Measures
Refresher training to
workforce to remind on
RA/SWP control
measures.
Rare
(1)
Remote
(2)
Occasional
(3)
Frequent
(4)
Almost Certain (5)
5
10
15
20
25
Major (4)
4
8
12
16
20
Moderate (3)
3
6
9
12
15
Minor (2)
Negligible (1)
2
1
4
2
6
3
8
4
10
5
Residual
Risk Index
Action by:
Designation
(Follow up-date)
S
L
R
3
1
3
Supervisor
-
-
-
Supervisor
5 x 5 Risk Matrix
Risk Category
Rare (1)
Remote (2)
Catastrophic (5)
Medium (5)
Major (4)
Moderate (3)
Minor (2)
Negligible (1)
Medium (4)
Low (3)
Low (2)
Low (1)
Medium (10)
Medium (8)
Medium (6)
Medium (4)
Low (2)
Accident
Severity
Level
5
4
Severity
Catastrophic
Major
3
Moderate
2
Minor
1
Negligible
Likelihood Of Accident
Occasional (3)
High (15)
Medium (12)
Medium (9)
Medium (6)
Low (3)
Frequent (4)
High (20)
High (16)
Medium (12)
Medium (8)
Medium (4)
Description
Fatality, diseases or multiple major injuries.
Serious injuries or life-threatening occupational disease (includes amputations, major fractures, multiple
injuries, occupational cancer, acute poisoning).
Injury requiring medical treatment or ill-health leading to disability (includes lacerations, burns, sprains,
minor fractures, dermatitis, deafness, work-related upper limb disorders).
Injury or ill-health requiring first-aid only (includes minor cuts and bruises, irritation, ill-health with
temporary discomfort).
Not likely to cause injury or ill-health.
Level
1
2
3
4
5
Likelihood
Rare
Remote
Occasional
Frequent
Almost
Certain
Description
Not expected to occur but still possible.
Not likely to occur under normal circumstances.
Possible or known to occur
Common occurrence.
Continual or repeating experience
Level
1-3
4-12
Risk
Low
Medium
High
Description
Acceptable
Additional control measure will be added
Management will not allow job to be done when there is high risk level
15-25
Almost Certain
(5)
High (25)
High (20)
High (15)
Medium (10)
Medium (5)
Likelihoo
d
Severity
Catastrophic (5)
Rare
(1)
Remote
(2)
Occasional
(3)
Frequent
(4)
Almost Certain (5)
5
10
15
20
25
Major (4)
4
8
12
16
20
Moderate (3)
3
6
9
12
15
Minor (2)
Negligible (1)
2
1
4
2
6
3
8
4
10
5