Faculty of Engineering
Activity or Experiment-Based Risk Assessment Form
Department:
Division of Bioengineering
Name of Experiment/Activity:
Location:
E3A-07-02
Name of Person in-charge:
Last Review Date:
Handling of Acids (inorganic, organic, nonoxidizing)
Name of PI:
Next Review Date:
1. Hazard Identification
No.
1
Dr. Dieter Trau
Task
Hazards
2. Risk Evaluation & Control
Possible
Consequences
Existing Risk
Control
(if any)
To Take / use:
Acidic, corrosive,
Damage of
Use correct
acid out of
Partially
equipment by
pipetting
storage bottle, to
evaporative or
vapor or liquid
equipment
dilute and por-
fuming,
form.
Work apart sen-
tioning them, add
development of
Irritation and or
sitive equipment.
small amounts to
heat causing
damage of skin.
Wear full personal
experimental
eruptive
Partially
protecttive equip-
sample
evaporation,
destruction of
ment especially
irritant or harmful
mucous
safety goggles +
to mucous
membrane
acid resistant
membranes
gloves
Mix slow and
carefully with other
reagents
S
L
R
1
2
3
Additional /
New Risk
Control
S
L
R
Action By
Deadline
2
To dispose
Acidic, corrosive,
Damage of
Use correct
acidic waste and
Partially
equipment by
pipetting
unused acid
evaporative or
vapor or liquid
equipment
fuming,
form.
Work apart
development of
Irritation and or
sensitive
heat causing
damage of skin.
equipment.
eruptive
1
2
3
Wear full personal
evaporation,
Partially
protective
irritant or harmful
destruction of
equipment
to mucous
mucous
especially safety
membranes
membrane
goggles + acid
Might react with
resistant gloves.
other substances,
Mix slow and
be dangerous to
carefully with other
environment
reagents
Dispose only in
designated bottles
for aqueous acid
and base waste,
collect for
professional
dispose.
Conducted by: (Name, designation)
Sebastian Beyer PhD student
Signature:
Date:
Approved by: (Name, designation)
Signature:
5 February 2009
Date:
Dr. Dieter Trau
Risk Assessment Matrix
Likelihood
Severity
Minor
Moderate
Major
Remote (1)
Occasional (2)
Frequent (3)
1
2
3
2
4
6
3
6
9
(1)
(2)
(3)
Severity Categories
Level
Human (Impact to
Physical Being)
Biological Impact
Environmental
Damage
Property Damage (S$)
(1) Minor
No Injury or light injury
requiring only first aid
treatment (MC < 4 days
MC)
Any injury/ill health
leading to ≥ 4 days MC or
≥ 1 day hospitalisation or
leads to temporary
disability
May not cause human disease, if does, the disease
is unlikely to spread to the community and there is
usually effective prophylaxis or treatment available;
Reversible
Up to $5,000
Can cause severe human disease, not ordinarily
spread by casual contact from one individual to
another; it may spread to the community, but there
is usually effective prophylaxis or treatment
available
Reversible but takes
years
$5,001 to $50,000
Fatality, permanent
Disability or life
threatening disease
Can cause lethal human disease, may be readily
transmitted from one individual to another, or from
animal to human or vice-versa directly or indirectly,
or casual contact, it may spread to the community;
usually no effective prophylaxis or treatment
available
Irreversible
More than $50,000
(2) Moderate
(3) Major
Likelihood Categories
Level
(1) Remote
(2) Possible
(3) Frequent
Events Frequency
Undesired event which may occur but unlikely, once in 5 years
Undesired event which is probable, once in a year
Undesired event which probably occur in most circumstances, once or more in a month
Risk Level and Acceptability Criteria
Risk Score
Risk Level
Acceptability
of Risk
<3
Low Risk
Acceptable
Medium Risk
Moderately
Acceptable
3–4
Recommended Actions
No additional risk control measures required. To continue to monitor to ensure risk do not escalate to higher level.
Acceptable to carry out the work activity; however, task need to be reviewed to bring risk level to As Low As Reasonably
Practicable.
Interim control measures such as administrative controls can be implemented. Supervisory oversight required.
Job must not be carried out until risk level is brought to at least medium risk level.
>4
High Risk
Not Acceptable
Risk controls should not be overly dependant on personal protective equipment. Controls measures should focus on
Elimination, substitution and engineering controls.
Immediate Management intervention required to ensure risk being brought down to at least medium level before work can
be commenced.