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Risk Assessment Matrix
| SN | Activity | Hazard | Consequence | Groups Exposed | Controls | Initial Risk | Additional Controls | Residual Risk | Actions |
|---|---|---|---|---|---|---|---|---|---|
| 1 |
Complete HDPE Duct Infill
|
1. Vehicle movement and traffic hazards
2. Manual handling during loading/unloading
3. Uneven ground conditions
|
Personal injury, property damage
|
Site Personnel, Subcontractors, Public
|
1. Implement traffic management plan
2. Designated walkways
3. Mandatory PPE
4. Speed limit enforcement
|
P
3
×
S
3
9
|
1. Comply with ADOSH SF CoP 27.0
2. Daily vehicle inspection
3. Toolbox talk
|
P
2
×
S
2
4
|
|
| 2 |
Site mobilization and setup of temporary
|
Passing high-speed public traffic and moving site vehicles
|
Personal injury, property damage
|
Site Personnel, Subcontractors, Public
|
Approved TTM plan, high-visibility clothing (Class 3), physical water-filled/concrete barriers, advanced warning signs, and trained flagmen.
|
P
3
×
S
3
9
|
Deployment of Truck Mounted Attenuators (TMA) and enforcement of reduced speed limit zone in coordination with local traffic authorities.
|
P
2
×
S
2
4
|
|
| 3 |
Trench excavation and sub-surface ground preparation
|
Accidental strike on existing buried live electrical cables or gas utilities
|
Personal injury, property damage
|
Site Personnel, Subcontractors, Public
|
Utility mapping review, CAT & Genny cable avoidance scanning, and manual trial pits (pot-holing) prior to mechanical excavation.
|
P
3
×
S
3
9
|
Mandatory Permit to Dig system, use of insulated hand tools near identified utilities, and continuous competent supervision.
|
P
2
×
S
2
4
|
|
| 4 |
Uncoiling, handling, and positioning HDPE pipe
|
Sudden release of stored mechanical spring energy in coiled HDPE pipe
|
Personal injury, property damage
|
Site Personnel, Subcontractors, Public
|
Use of specialized pipe reeler/uncoiler frame, controlled strap cutting procedures, and establishing exclusion zones.
|
P
3
×
S
3
9
|
Mandatory deployment of safety restraints/bands before unstrapping and wearing high-impact resistant safety glasses and gloves.
|
P
2
×
S
2
4
|
|
| 5 |
HDPE pipe jointing via electrofusion and
|
High-temperature heating elements, hot molten plastic, and portable electrical generators
|
Personal injury, property damage
|
Site Personnel, Subcontractors, Public
|
Certified welding equipment, RCD-protected generators, heat-resistant safety gloves, and portable fire extinguishers nearby.
|
P
3
×
S
3
9
|
Hot Work Permit implementation, provision of localized exhaust ventilation or respiratory protection (FFP3) in confined areas.
|
P
2
×
S
2
4
|
|
| 6 |
Entry into underground chambers and manholes
|
Hazardous atmosphere (oxygen deficiency, toxic gases like H2S/methane), engulfment, or fall from height
|
Personal injury, property damage
|
Site Personnel, Subcontractors, Public
|
Confined Space Entry Permit, pre-entry 4-gas atmospheric testing, forced air ventilation, and tripod rescue system with harness.
|
P
3
×
S
3
9
|
Continuous multi-gas monitoring during entry, dedicated trained top-person/standby monitor, and verified emergency rescue plan.
|
P
2
×
S
2
4
|
|
| 7 |
Mechanical winch pulling of HDPE sub-ducts
|
High-tension winch wire snap, rotating capstans, and pinch/nip points
|
Personal injury, property damage
|
Site Personnel, Subcontractors, Public
|
Properly rated winching wire with calibrated weak-link swivel, emergency stop switches, and safety guards over rotating parts.
|
P
3
×
S
3
9
|
Integrated load monitoring with automatic shut-off at peak tension limits and strict exclusion zones along the tension line.
|
P
2
×
S
2
4
|
|
| 8 |
Duct proving (mandrel testing) and air
|
Uncontrolled high-pressure compressed air release and projectile ejection of foam pig or mandrel
|
Personal injury, property damage
|
Site Personnel, Subcontractors, Public
|
Calibrated pressure relief valves, secure containment/catcher cage at receiving duct end, clear exclusion zone enforcement.
|
P
3
×
S
3
9
|
Mandatory Pressure Testing Permit, full-face protection shields for operators, and calibrated double-gauge manifolds.
|
P
2
×
S
2
4
|
|
| 9 |
Unloading and Manual Handling of Busbars and Sheet Metal
|
Sharp metal edges, heavy loads, awkward lifting postures
|
Musculoskeletal injuries, spinal strain, severe cuts, lacerations, foot impact injuries
|
Fabrication Technicians, Store Keepers, Material Handlers
|
Mandatory cut-resistant gloves (Level D/E), safety boots, manual handling training, use of overhead cranes and forklifts for heavy loads
|
P
4
×
S
3
12
|
Enforce team lifting policy for loads exceeding 20 kg, conduct daily pre-use inspections on lifting gear and slings
|
P
2
×
S
2
4
|
|
| 10 |
Hydraulic Shearing and Cutting of Metal Enclosures and Busbars
|
Exposed high-speed shear blades, moving mechanical parts, pinch points
|
Traumatic finger or limb amputation, severe crushing injuries, lacerations
|
Machine Operators, Fabrication Helpers
|
Two-hand safety control mechanisms, fixed perimeter guarding, emergency stop buttons, safety glasses, and cut-resistant gloves
|
P
4
×
S
4
16
|
Install interlocked light curtains, implement strict Lockout/Tagout (LOTO) protocols during blade changes and maintenance
|
P
1
×
S
3
3
|
|
| 11 |
Hydraulic Busbar Bending and Punching Operations
|
High-pressure hydraulic clamping, pinch points, metal ejection under force
|
Pinch injuries, hand/finger fractures, high-pressure fluid injection injuries
|
Machine Operators, Electrical Assemblers
|
Enclosed punching dies, foot pedal shrouds to prevent accidental actuation, routine hydraulic hose pressure inspection
|
P
3
×
S
4
12
|
Mandatory usage of holding jigs to keep hands outside the hazard zone, schedule quarterly preventive hydraulic maintenance
|
P
1
×
S
2
2
|
|
| 12 |
Welding (TIG/MIG) and Metal Frame Fabrication
|
Ultraviolet/Infrared arc radiation, toxic welding fumes, high-voltage electrical arc
|
Arc eye (photokeratitis), skin burns, respiratory illness, electrical shock
|
Welders, Fabricators, Nearby Personnel
|
Auto-darkening welding helmets, flame-retardant leather jackets and aprons, local exhaust ventilation (LEV), welding screens surrounding workspace
|
P
4
×
S
3
12
|
Provide Powered Air-Purifying Respirators (PAPR) for prolonged welding operations, perform annual LEV extraction efficiency testing
|
P
2
×
S
2
4
|
|
| 13 |
New Activity 125879654
|
Identify hazards here
|
Describe consequences
|
All personnel
|
List control measures
|
P
3
×
S
3
9
|
Additional controls
|
P
2
×
S
2
4
|
Activity Log
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uploaded document for status: AP
3 months ago
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updated
3 months ago
System
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updated matrix
3 months ago
System
•
uploaded document for status: AP
3 months ago
System
•
updated matrix
3 months ago
System
•
updated
3 months ago
System
•
updated
3 months ago
System
•
updated matrix
3 months ago
System
•
updated
3 months ago
System
•
updated
3 months ago