RESOURCES PTE LTD
59
WOODLANDS
IND
PK
E2,
Co. Reg. No. 200101754G
SINGAPORE
757476
TEL:
64649959
FAX:
64649949
20 August 2013
From: Senior Safety Manager
To:
General Manager
Subj: #40-2013, ACTIVITY HAZARD RISKS ASSESSMENT FOR THE CONSTRUCTION OF A PARKING LOT ACROSS FROM FONG’S CORNER
AT PSA SEMBAWANG
Ref: (a) Ministry of Health, MH 34:20/24-5 Vol. 4
1. Per reference (a), this risk assessment was completed to address hazards to workers constructing a new parking lot across from
Fong’s Corner at PSA Sembawang. The purpose of this document is to identify specific hazards, indentify those individuals most at
risk, evaluate those hazards for severity and likelihood of occurrence, and recommend corrective actions that will eliminate or
minimize risk to workers performing this installation work. This AHA will be reviewed periodically and updated as needed to reflect
changes in working conditions, processes or addition of new materials or equipment. The following are included as accompanying
documents:
a. Inventory of Work Activities (Page 3)
b. 5 Point Activity Risk Matrix (Page 6)
c. Risk Assessment Form (Page 7)
1
d. List of PNH Competent People (Page 12)
2. Please address any questions or concerns to me at 8205 8249 or lee_wilson@pnhgrp.com.
Respectfully,
T. L. Wilson
2
Risk Assessment Form
#40-2013, Activity-Based Risk Assessments for Construction of a New Parking Lot
Across from Fong’s Corner at PSA Sembawang
Inventory of Work Activities
Company: PNH Resources LTD PTE
20 August 2013
No. Process Description
Work Activities
Engineering
1
Engage the services of all required Registered Professional Structural or Civil Engineer to design
and provide all aspects of the new construction of concrete pavement including all other related
work for the completion of this project.
2
Site Preparation
Provide and install safety signage, notices, and barricades/dust barriers to secure the area from
the surrounding offices and work areas that remain operational during this construction.
3
Vegetation and Refuse
Remove, clear and dispose of shrubs and scattered vegetation within the bounds of the
Clearing
proposed parking area. Stumps and roots shall be removed completely prior to the preparation
of the base of the parking lot. Clear all rubbish such as broken concrete, stones and scarps. All
collected materials shall be disposed to the contractor’s own authorized dumpsite on a daily
basis.
4
Demolition, Excavation and Hack and remove existing concrete and brick barrier separator located at the mid part of the
Disposal
vacant lot. Hack and remove existing asphalt and concrete pavement within the bounds of the
proposed parking lots. Existing fill material is to remain. Hack and remove the abandoned
drainage ditches at the vacant lot. Excavate the top soil down to good substrate material and
remove off site as needed.
5
Sub-grade and base
Recondition as necessary and compact the approved sub-grade to maximum compaction prior
preparation
to spreading of selected fill for sub base. Perform compaction test to the prepared base in
accordance with the location recommended by the site engineer. No installation of formworks
and reinforcement shall be allowed unless it passes the required compaction test.
6
Construct Drainage System Design, supply and construct an approved reinforced concrete drainage system on compacted
gravel base on compacted sub grade. Construct a new cut off free drain and connect to existing
3
7
Construct Concrete
Pavement for Parking Lots
8
Prepare surfaces for
painting and paint per plan
drainage ditch. Install hot dipped galvanized vehicular grade heavy duty removable steel
gratings to new drainage ditch. Repair the damaged portion of the existing drainage ditch along
the roadways at two sides of the new parking area and over other sections of the existing drains
including where the new drains discharge into the existing drains. This includes the removal and
disposal of all accumulated silts and dirt blocking the drainage flow.
Design, supply and construct minimum 150mm thick new reinforced concrete pavement with
thickened edges for the parking lots including hardcore, backfilling, required reinforcement, etc.
The reinforced concrete shall be designed to withstand 30 tons of weight. Construct reinforced
concrete ramp at the entrance and exit of the new parking lot and in compliance with the latest
local standards. The lowest point of the ramps shall be provided with transition cut and in-line
or matching level with the existing asphalt pavement of the roadway immediately fronting the
site.
The following markings as shown on the concept markings shall be completed:
1. Parking stalls for dumpsters (4)
2. Parking stalls for lorries (7)
3. Single 45° diagonal parking (24)
4. Back to back 45° diagonal parking (22)
5. Directional arrows as appropriate
6. Entry/Exit Markings (2 each)
Supply, deliver and install new precast concrete bumpers to 57 parking stall (2 bumpers per
stall), Prepare surface and apply (1) coat of primer and (2) coats of yellow paint to exposed
surfaces of parking bumpers.
9
Cleaning and final works
prior to opening lot to the
Public
10
Heat Stress
Supply and install signage on the PSA parking pavement for identification of lots.
Contractor shall collect and dispose of all demolished materials.
Contractor shall clean worksite and surrounding areas affected by the renovation works.
Contractor must maintain good housekeeping at all times. Project site must be cleaned prior to
securing each work day.
Working in non-air conditioned spaces may place workers at risk of sustaining heat injuries or
illnesses. (Page 10)
4
11
Competent Persons
Listing of persons with particular areas of expertise and their hand phone numbers so that they
may be contacted as questions arise during the course of this construction. (Page 12)
5
ACTIVITY RISK ASSESSMENT – MATRIX EMPLOYED TO QUANTIFY RISK
Risk Criteria
Severity (1-5, Lowest – Highest)
Likelihood ( 1-5, Lowest - Highest)
1-Negligible Injuries: slight injury or health effect,
2-Minor Injuries: Injury or ill health requiring first aid treatment only
3-Moderate Injury: Injury requiring medical treatment or ill health leading to disability
4-Major Injury Disability: serious injury or life threatening occupational disease
5-Castrophic: serious injury resulting in fatality or irreversible health damage with death
1-Rare: very unlikely to happen,
2-Remote: not likely to happen most of the time,
3-Occasional: likely to happen sometime,
4-Major Injury Disability: likely to happen several times regularly,
5-Almost Certain: Likely to happen
Risk Level (Severity x Likelihood)
Trivial Risk
:
Tolerable Risk :
Moderate Risk :
Substantial Risk :
Intolerable Risk :
1 to 2 (L)
3 to 9 (L)
10 to 19 (M)
20 to 24 (H)
25 (H)
- First aid treatment injury, minor cuts or bruises, clean-up effort for environmental impact
- First aid treatment Injury, minor cuts or bruises, clean-up effort for environmental impact
- Temporary disability, lost time injury, outpatient treatment, minor or short term environmental impact
- Serious Injury, permanent disability, major disruption and damage to equipment or structure, significant environmental
- Fatality or fatalities, serious injury, permanent disability, major structural or equipment damage, detriment environmental
The table above provides numerical methodology to quantify risk and to better prioritize hazard
abatement. These values are the criteria for the Activity-Based Risk Assessments beginning on the
following page. No catastrophic risk of any certainty was identified during the preparation of
this risk assessment.
Generally risk levels calculated at 9 and below are considered acceptable, manageable risk.
However, those above nine should receive additional scrutiny to determine what steps are available
to reduce overall risk including, administrative controls, substitution of a higher hazardous
material for a less hazardous material, use of engineering controls or use of personal protective
equipment (PPE).
6
Risk Assessment Form
Activity-Based Risk Assessment Form
Company:
PNH RESOURCES PTE LTD, 59 Industrial Park E2,
Singapore 757476
Process/Location:
Construction of a Parking Lot Across from
Fong’s Corner at PSA Sembawang
Approved by:
Joseph Lim
(Name, designation)
General Manager
(Date)
20 August 2013
1. Hazard Identification
Mr. Lee Wilson
Senior Safety Manager
20 August 2013
Ref: Ministry of Manpower
Regulations
Last Review
20 August
Date:
2013
2. Risk Evaluation
1a
1b
1c
1d
2a
No
Work Activity
Hazard
Possible Accident/
Ill Health &
Persons at Risk
Engineering Staff
assigned to this
project
Existing Risk Control
(if any)
1
Engineering
services/work
Ergonomic
injuries from
prolonged time in
one position or
from repetitive
motions.
2
Site Preparation
– Posting of
cautionary
signage and
erection of
barricades to
isolate the work
site
Musculoskeletal
from lifting
barricade
materials and
pounding nails to
post signage.
Persons assigned
to this phase of
work
Training with regards to
methods that can be
employed to prevent these
types of injuries including:
1. Take breaks as
needed,
2. Vary positions
when working
3. Do stretching
exercises at the
work desk to
alleviate
stress/strain
Training alerting workers
how to avoid these types
of injuries.
7
Next
01 March 2014 or
Review
more often as
Date:
needed
3. Risk Control
2b
2c
2d
3a
3b
Severity
Likely
hood
Risk
Level
Additional Risk Control
Action Officer
Designation
2
1
2
Report any and all incidences of
real or suspected repetitive
motion injuries to the Safety
Department
Senior Safety
Manager
2
2
4
Training should include:
1. Proper lifting techniques, use
legs, keep back straight, & keep
load close to the body
2. Don’t twist /turn with load
3. Use the “Buddy” System
4. Inspect the path to be taken
prior to carrying the load
Senior Safety
Manager
No
Work Activity
Hazard
Eye Hazard from
flying debris
3
4
Vegetation and
Refuse Clearing
Demolition,
Excavation and
Disposal
Possible Accident/
Ill Health &
Persons at Risk
Persons assigned
to this phase of
work
Severity
Likely
hood
Risk
Level
Sight protection is issued
to all PNH workers and
they receive training on
the proper use of this
equipment, anatomy of
the human eye and
emergency treatment of
eye injuries.
Training alerting workers
how to avoid these types
of injuries.
2
2
4
If the worker feels safety goggles
do not provide sufficient
protection, safety goggles are
available in the Safety Office.
Senior Safety
Manager
2
2
4
Training should include proper
bending techniques, i.e. don’t
bend over and pull with the back.
Squat down grabbed the
vegetation and use legs to
provided force.
Senior Safety
Manager
Training is also provided to
workers several times a year as
part of their normal training
curriculum and repeated during
the pre-construction brief as
needed.
Training should be updated on
the Sight Conservation Program
prior to beginning this phase of
work.
If the worker feels safety goggles
do not provide sufficient
protection, safety goggles are
available in the Safety Office.
The Safety Department has the
capability to do noise surveys and
should be contacted to
coordinate a noise survey to rule
out the need for double hearing
protection
Senior Safety
Manager
Report all incidences of suspected
“white finger disorder” to the
Safety Office
Senior Safety
Manager
Existing Risk Control
(if any)
Musculoskeletal
from bending,
turning, pulling
vegetation and
wielding tools to
assist with this
operation
Noise from
operating
vegetation
removing
equipment
Persons assigned
to this phase of
the operation
Persons operating
this equipment
Hearing protection is
issued to all PNH workers
and replaces as needed
2
2
4
Eye Hazard from
flying debris
Persons assigned
to this phase of
work
2
2
4
Noise Hazard
from hacking
Persons operating
the hacking
equipment and
other workers/
personnel who
might be in the
vicinity
Persons assigned
to operate this
equipment
Sight protection is issued
to all PNH workers and
they receive training on
the proper use of this
equipment, anatomy of
the human eye and
emergency treatment of
eye injuries.
Training and the issuance
of hearing protection
devices and also
enforcement of their use.
3
3
9
Training on the hazards of
vibration including
developing “white finger”
3
2
6
Vibration – from
operating hacking
equipment
8
Additional Risk Control
Action Officer
Designation
Senior Safety
Manager
Senior Safety
Manager
No
5
6
Work Activity
Sub-grade and
base preparation
– Operation of
compaction
equipment
Construct
Drainage System
7
8
Painting of
concrete
bumpers as per
plan
disease.
Existing Risk Control
(if any)
Severity
Likely
hood
Risk
Level
Training as discussed
above in section 2
2
2
4
As discussed above in section 2
Senior Safety
Manager
Persons assigned
to operate the
compaction
equipment
Training on the hazards of
vibration including
developing “white finger”
disease.
3
2
6
Report all incidences of suspected
“white finger disorder” to the
Safety Office
Senior Safety
Manager
Noise Hazard
Workers operating
the compaction
equipment
3
2
6
Pre-construction brief shall
include a review of the principles
of hearing conservation.
Senior Safety
Manager
Sight Hazard from
flying debris
Workers in the
vicinity and the
equipment
operators may be
at risk
Persons assigned
to the
construction of the
drainage ditch
system
Workers are provided with
hearing protection which is
required when operating
compaction equipment
Workers wear sight
protection when
performing this work
2
2
4
Secure the area from all
unauthorized personnel prior to
beginning work and maintain
worksite controls at all times.
Senior Safety
Manager
Training as discussed in
section 2 above
3
2
6
As discussed in section 2 above.
Senior Safety
Manager
Sight protection (safety
glasses) and training prior
to beginning this project in
addition to normal routine
training on this subject.
Rubber gloves are
available for issue if
required by workers, keep
paint off of skin as much as
possible. Good work
practices will greatly
reduce the risk of worker
exposure via skin contact.
3
2
6
Report any and all eye injuries to
the safety office so they can be
investigated.
Senior Safety
Manager
2
2
4
Hazard
Musculoskeletal
from moving
debris from the
worksite
Vibration – from
operating
compaction
equipment
Musculoskeletal
from moving
materials and
manipulating
drainage pieces
into position
Sight Hazard from
flying debris
Skin Hazard from
paint
Possible Accident/
Ill Health &
Persons at Risk
Persons involved
with this task
Persons assigned
to the drainage
system
construction
Persons physically
doing the painting
on this project
9
Additional Risk Control
Action Officer
Designation
Senior Safety
Manager
No
Work Activity
Hazard
Exposure to paint
vapors
9
10
11
Cleaning and
final works prior
to opening lot to
the Public
Removal of
material from
the jobsite by
waste disposal
truck
Exposure to
heat while
working
outdoors
Possible Accident/
Ill Health &
Persons at Risk
Persons physically
doing the painting
on this project
Musculoskeletal
from bending,
lifting and
carrying materials
to be disposed of.
Persons assigned
to this phase of
work
Sight Hazard from
flying debris
associated with
the cleanup of
this space.
Traffic Hazard –
Resulting in
accidents/injuries
or worse.
Persons assigned
to the cleanup of
this work site.
Individual driving
the waste truck
and others on the
highway.
Heat Cramps
Heat Rash
Heat Syncope
Heat Exhaustion*
Heat Stroke**
*If not treated
properly can
progress to heat
stroke.
Severity
Likely
hood
Risk
Level
Working outside in the
open air will alleviate
concern of overexposure
to paint vapors. Risk is
considered to be minimal.
Training alerting workers
how to avoid these types
of injuries.
1
1
1
2
2
4
Sight protection (safety
glasses) and training prior
to beginning this project in
addition to normal routine
training on this subject.
Use of only licensed drivers
with proven good driving
records.
2
2
4
2
2
4
3
2
6
Existing Risk Control
(if any)
Personnel
performing work
Training concerning
heat stress, clean
drinking water at all
job sites, sufficient
rest periods for
workers in
accordance with
Ministry of
Manpower
Recommendations
**Life
Threatening and
is a real medical
10
Additional Risk Control
Action Officer
Designation
Senior Safety
Manager
Training should include:
1. Proper lifting techniques, use
legs, keep back straight, & keep
load close to the body
2. Don’t twist /turn with load
3. Use the “Buddy” System
4. Inspect the path to be taken
prior to carrying the load
Report any and all eye injuries to
the safety office so they can be
investigated.
Senior Safety
Manager
Senior Safety
Manager
Senior Safety
Manager
Continue emphasis on heat
injuries whenever safety training is
conducted. Ensure that drinking
water is always available for crews
working in heat stress conditions.
Ensure that all workers receive
training on the Heat Stress
Program observed by our
company. Please refer to the
attached table to recognize the
various heat conditions to expect
at specific temperatures.
Senior Safety
Manager
emergency.
Definitive
medical
assistance must
be summoned.
Heat Stress WBGT
Temperature
27.78-29.39 C (82-84.9F)
29.44-31.06 C (85-87.9F)
31.11-32.17 C (88-89.9F)
Above 32.22 C (90F)
Heat Stress
(Color)
Green
Yellow
Red
Black
Condition
Calculations:
WBGT = WB X 0.7 + DB X 0.1 + GT X 0.2
Meter calibration should be manually verified every 3 months. Manual calculation must be + 0.2 the meter’s WBGT readout in Fahrenheit
I
II
III
IV
Activity Level
Discretion is required when planning heavy exercise for acclimatized personnel.
Strenuous exercise and activity for new and un-acclimatized personnel during the first 30 days of heat exposure.
Strenuous exercise should be curtailed for personnel with less than 12 weeks of training in hot weather.
Physical training and exercise should be curtailed for all personnel (operational commitments excluded).
Heat stroke likelihood is high under conditions of high exertion.
11
QUALIFICATIONS AND POINTS OF CONTACT FOR THIS PROJECT FROM PNH RESOURCES PTE
LTD AND GOODMNAN ENVIRONMENTAL PTE LTD AUGUST 2013
Competent/Qualified Personnel:
Lee Wilson - 8205 8249
QP/ First Aid CPR/ Heat Stress Program/ Respiratory Protection Program/ Hearing/Sight Conservation Program
Alan Detoyato - 8216 5241
QP/ First Aid CPR/Electrical
Lim Joseph – 9683 7072
CP/ Scaffolds/ Fall Protection
Eng Yong Chye – 9626 9262
CP/Electrical/First Aid CPR/LOTO
Equipment Used:
Ladders/Scaffolds
Hand and Power Tools
First Aid Kit
Eyewash Station
LOTO Kit
Fire Extinguishers
Inspection Requirements:
Training Requirements
Inspect PPE daily and before use.
Inspect first aid kit at least weekly.
Inspect electrical extension cords before use
Visual inspection of Fire extinguisher daily
Daily Housekeeping of work areas
Daily site safety inspections by Safety Manager
and project Quality Control
12
Ladders/Scaffolds
Proper Lifting Techniques
First Aid/CPR
Emergency Telephone Numbers
Daily/Weekly Safety Tool Box Meetings