RISK ASSESSMENT
Date Severity (S) Frequency (F)
Company Classification Event Classification Event
Minor 1 Slight injury or health effects Very unlikely 1 Event will seldom occur
Task Description SCAFFOLDING ACTIVITY
Moderate 2 Minor Injury or health effects Unlikely 2 Will occur occasionally
Significant 3 Major injury or health effects Possible 3 Will occur infrequently
Specific Work Location Serious 4 Fatal accident or total permanent disability Likely 4 Will occur frequently
Work Responsible Supervisor Catastrophic 5 Multiple fatalities-from an accident or occupational Frequent 5 Event is almost certain to occur
illness
Residual Risk Value
Job Present Risk Value (after additional
Sub-task Description Hazard Present Control Measure Additional Control Measure control)
Step No
S F R S L R
1 Apply for Permit To Work Non-conformance Secure necessary permit. • Review and check the
Permit Receiver shall be available throughout permit attachment all the
2 1 2 1 1 1
the duration of the activity. time
Work Permit shall be displayed on work site.
2 Pre-task briefing Lack of knowledge/ understanding TSTI /TBT (specific to the activity and Job • Supervisor shall discuss
Safety Analysis). clearly to all his crew the
3 1 3 possible hazard that will be 1 1 1
encounter during this
activity
3 Erection of Scaffold Erect the scaffold on levelled compacted ground, • Proper supervision and
Chance of collapse of Scaffold
the erectors shall be 3rd party certified and work monitoring to the entire
under supervision of SA Approved Scaffold activity
Supervisor.
The material shall conformed to the EN 39-2001, 3 3 9 2 2 4
EN 74-1998 and ANSI A14.3 standards for the
materials
Place barricade and signage to prevent
unauthorized personnel/ vehicle entry
Material fall down Do not place loose material near to the edge • Pulley shall be utilize the
of portable. shifting of materials from
Keep all tools closer to user’s body by using top to bottom
tool lanyard.
3 2 6 2 1 2
Barricade work area and provide warning
signs.
Secure the materials over the platform; do not
leave material on top if the wind speed increase.
Chance of person fall from Provide proper access when erecting the • Always follow the three
scaffold scaffold; do not climb through brace or standard. point contact procedure
While climbing on ladder do not carry things on during descending and
hand, maintain three point contacts with ladder, ascending in the ladder
one man at a time on the ladder.
Hook up to the self-retracting fall arrestor before
start climbing the ladder if the height is more 3 3 9 2 1 2
than 3 meters.
Carry tools by tool belt or employ rope and
material basket.
Stop work when the speed of wind is more than
25kph if hooked up to Crane. When the wind
speed is more than 65kph stop work on scaffold
Provide RED tag on the scaffold while erecting. • Scaffold structure shall
Improper method of erection
Only scaffold erector shall work on red tag. be erected by a
They shall stand on double planks with competent person
clamping, not on loose single planks.
Materials shall not be thrown; canvas basket
3 2 6 2 1 2
shall be used for lifting materials, if the weight or
height is more install Gin wheel for safe
handling.
Barricade around the lifting area and watchman.
Rope puller shall be out of the line of fire.
Electrical Contact Any special scaffold shall be erected with LPD • Ensure to install
authorization under the supervision of grounding on a scaffold
competent person approved by Saudi structure
Aramco.
The scaffold shall not be near to any high 3 3 9 2 2 4
tension electrical lines.
The distance between the line and scaffold shall
be minimum 10 feet (3meters) and metal ladder
shall not be used near high tension lines
Scaffold inspection Improper tagging and use The scaffold shall be inspected as per SA • Shall be inspected by a
Standard; the GI 008.001 shall be followed qualified and competent
for inspection and tagging. inspector
The scaffold 6 meters and less shall be
tagged by Scaffold supervisor; scaffold with
more than 6 meters height shall be inspected
by Supervisor and scaffold inspector.
The SA approved tag shall be used and the
scaffold shall be re-inspected after every 14
days if no modifications or alteration
3 2 6 2 1 2
occurred.
In case rain or storm the scaffold shall be
inspected for the condition and signed by
competent authority.
Green tagged scaffold shall be used for
working without full body harness, use full
body harness with proper anchoring point on
yellow tagged scaffold.
Scaffold users shall not change the tag or
work improperly over the scaffold.
Scaffold Modification The modification shall be done only by • Only authorized
Unauthorized scaffold handling
certified erectors. scaffolder’s
No other crafts are authorized to alter or
modify any scaffold and remove any portion
of scaffold
The scaffold supervisor and scaffold
3 3 9 2 2 4
inspector shall keep the record of
modifications and re-inspect the scaffold
before allowing work.
Do not take supports from the scaffold such
as carpentry jacks, chain puller or chain
hoists.
5 Dismantling The scaffold material shall be lowered by • Pulley shall utilize to shift
Throwing of material from height
hand to hand or through Gin wheel or crane. materials from top to
The measures observed for the erection shall 2 2 4 bottom 2 1 2
be followed such as red tag, barricade and
watchman.
Frequency (F) Low Any task that has this risk ranking is generally
acceptable. The work environment and methodology
present minimal risks to personnel
Very Unlikely Possible Likely Very Medium Any task that has this ranking is only acceptable if
Unlikely Likely the risk is as Low As Reasonably Practicable
(ALARP). ALARP assessments should be completed
Risk Matrix by qualified and experience person. Personnel
completing tasks which are in this rank should be
fully aware of the risks which exist and this control
measures put in place to minimize them.
High Any task that has this risk ranking must not be
1 2 3 4 5 completed instead it should be refined or further
control measures put in place to reduce risk.
Negligible 1 1 2 3 4 5
Severity (S)
Minor 2 2 4 6 8 10
Significant 3 3 6 9 12 15
Severe 4 4 8 12 16 20
Catastrophic 5 5 10 15 20 25
