PART 4: IMPLEMENTATION & OPERATION TITLE · PDF file04.05.2012 · PART 4:...
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TITLE
Prepared by:
PART 4: PART 4: IMPLEMENTATION & OPERATIONIMPLEMENTATION & OPERATION
� 4.2 Hazard Identification, RiskAssessment and Risk Control (HIRARC)
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Learning Objectives
� To define what is risk
assessment.
� To assess the hazard
� To describe the
method of identifying
hazard.
� To assess the hazard
identification, risk
assessment and risk
control process.
� To construct the risk
assessment matrix.
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� What is Risk assessment??:
The process of evaluating the risks to safety and health arising from hazards at work.
Risk Assessment
� Risk assessment results is documented and used for:
1. Risk control in OSH management
2. Future reference and review
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1. Integrate Risk Management as part of planningat all levels of business
2. Accept all risks
Basic Principles Of Risk Management
2. Accept all risks
3. Make risk decisions appropriately (depending on level of risk)
4. Manage the risk
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� Before Operation
� During Operation
When To Carry Out Risk Assessment
� After Operation
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� Review whenever there are changes:
� Internal
� Before modification, changes or introduction of new
�Materials, machinery or
When To Review Risk Assessment
�Materials, machinery or processes, working procedures.
� External
� Amendments of national laws and regulations
� Developments in OSH knowledge and technology
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� Hazard Identification
� Risk Assessment
Basic Components Of Risk Management
� Risk Control
� Review
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Risk Assessment
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� Severity in terms of:
� Harm to health
� Damage to property
� Damage to environment
Determining Severity
� Or the combination of the above
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Severity
Determine severity categories:
� Catastrophic (Major fatality & irrecoverable damage)
� Fatal (normally irreversibleinjury or damage to health)
� Serious (Non-fatal injury, � Serious (Non-fatal injury, permanent disability.)
� Minor (Disabling but not permanent injury)
� Negligible injuries (first aid type injury)
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� Most likely - could happen frequently
� Possible – has a good chance of occurring & not unusual.
Likelihood
� Conceivable – occurred sometime in future.
� Remote – not been known to occur many times.
� Inconceivable – impossible & never occured
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SeverityLikelihood
Most Likely
(5)
Possible
(4)
Conceivable
(3)
Remote
(2)
Inconceivable
(1)
Catastrophic
A. Qualitative Risk Table
Catastrophic
(5) High-25 High-20 High-15 Medium-10 Medium-5
Fatal
(4) High-20 High-16 Medium-12 Medium-8 Low-4
Serious
(3) High-15 Medium-12 Medium-9 Medium-6 Low-3
Minor
(2) Medium-10 Medium-8 Medium-6 Low-4 Low-2
Negligible
(1) Medium-5 Medium-4 Low-3 Low-2 Low-1
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Status of Risk
RISK DESCRIPTION ACTION
15 – 25 HIGH
A HIGH risk requires immediate action to control the hazard as detailed in the hierarchy of control. Actions taken must be documented on the risk assessment form including date for completion.
A MEDIUM risk requires a planned approach to
5 – 12 MEDIUM
A MEDIUM risk requires a planned approach to controlling the hazard and applies temporary measure if required. Actions taken must be documented on the risk assessment form including date for completion.
1 – 4 LOW
A risk identified as LOW may be considered as acceptable and further reduction may not be necessary. However, if the risk can be resolved quickly and efficiently, control measures should be implemented and recorded.
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Determine severity categories:
� 4: Fatality & Permanent Disability
� 3: More than 4 days MC
B. Semi – Quantitative Risk Assessment
� 2: Less than or 4 days MC
� 1: First aid and near misses
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Determining Likelihood of Occurrence of
Hazard
� 4: Daily
Semi – Quantitative Risk Assessment
� 3: Weekly
� 2: Monthly
� 1: Yearly
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LIKELIHOOD
SE
VE
RIT
Y
Yearly Monthly Weekly Daily
1 2 3 4
Semi – Quantitative Risk Assessment
SE
VE
RIT
Y
First Aid and Near Misses
1 1 2 3 4
Less than or 4 days
MC2 2 4 6 8
More than 4 days MC
3 3 6 9 12
Fatality & Permanent Disability
4 4 8 12 16
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Activities / process /
facilities/ equipmentHazard Effect
Current Risk
Control
Legal
Reqmt
Risk Action &
RecommendationsSeverity. LikelihoodRisk
Rating
Arc WeldingPhysical:-Radiation
Eyes …Face shield
FMA, OSHA
2 3 6PPE-goggles, eye wash station, job rotation
Chemical:-Fumes
Breathing …..-
FMA, OSHA
2 3 6Exhaust fan, respirator, job rotation
Physical:- Spark
Skin blisterGloves, overall, kasut
FMA, OSHA
2 3 6
Fire resistance coverall , glove, fire extinguisher,
Risk Assessment Form
overall, kasut OSHA2 3 6
extinguisher, emergency shower
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Risk Control
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Principle of Control
•Substitution
•Modify process
•Enclosure
•Local exhaust
•Fugitive
emission control
•Isolation
•Housekeeping
•General
ventilation
•Continuous area
monitoring
•Dilution
ventilation
•Automation or
remote control
•Training and
education
•Worker rotation
•Enclosure of
worker
•Personal
monitoring
•Personal
protective devices
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Hierarchy Of Control
MOST EFFECTIVE
Elimination - remove the hazard.
FAIRLY EFFECTIVE
Substitution - use less hazardous
one.
Isolation – isolate the work area i.e.
X-ray machine in restricted roomX-ray machine in restricted room
Engineering Control – design,
isolation at source, barricade,
guarding,
LEAST EFFECTIVE
Administrative Control – safe work
procedure, isolation i.e. reduce
exposure time and limit, training,
signage etc
PPE - last resort.