fabrication installation of concrete
UR - Under ReviewReference: RA-2026-n8ceZnjk
Total Activities
13
High Risk
3
Medium Risk
10
Low Risk
0
📄 Method Statement
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Risk Assessment Matrix
| SN | Activity | Hazard | Consequence | Groups Exposed | Controls | Initial Risk | Additional Controls | Residual Risk |
|---|---|---|---|---|---|---|---|---|
| 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 | Underground Utility Surveying and Cable Detection | Encountering hidden live underground power cables or buried utilities during survey and marking | Electrocution, severe electrical arc burns, flash injuries, localized power grid disruption | Land Surveyors, Civil Engineers, HSE Inspectors, Groundworkers | Obtain valid Permit to Work (PTW) and Excavation Permit; Review cable route drawings; Perform CAT and Genny electromagnetic scan across the entire footprint; Mark identified utility paths clearly. |
P
4
×
S
5
=
20
|
Mandatory hand-digging of trial pits using insulated non-conductive hand tools prior to any mechanical activity; Re-scan area continuously during excavation. |
P
1
×
S
4
=
4
|
| 10 | Mechanical Excavation for Concrete Foundations and Cable Trenches | Excavation sidewall collapse, contact with live utilities, heavy equipment strike | Engulfment, asphyxiation, crushing injuries, fatal electrocution, struck-by injuries | Excavator Operators, Banksmen, Groundworkers, Spotters | Implement 45-degree slope benching or certified shoring box systems for depths >1.2m; Maintain 3-meter safe distance from overhead and underground utility zones; Install hard physical barricades with warning signage around trench edges. |
P
4
×
S
5
=
20
|
Appoint a dedicated trained Banksman with high-visibility clothing; Daily pre-shift trench inspection by a competent HSE Supervisor. |
P
2
×
S
3
=
6
|
| 11 | Rebar Cutting, Bending, and Off-site/On-site Fabrication | Flying metal debris, high-noise generation, protruding rebar ends, pinch points on benders | Lacerations, eye injuries/impalement, noise-induced hearing loss, finger amputation | Steel Fixers, Fabricators, Machine Operators, Nearby Personnel | Equip all open vertical rebar ends with high-visibility mushroom safety caps; Install safety guards on rebar cutters and benders; Wear cut-resistant gloves (Level 5) and impact safety glasses. |
P
4
×
S
4
=
16
|
Mandatory full-face shields during abrasive disc cutting; Provide double hearing protection (earplugs + earmuffs) in rebar fabrication yards. |
P
2
×
S
2
=
4
|
| 12 | Formwork Shuttering Assembly and Erection | Protruding nails, falling shuttering panels, manual handling of heavy formwork components | Puncture wounds, head injuries, foot/hand crush injuries, acute musculoskeletal disorders | Carpenters, Helpers, Scaffolders, Riggers | De-nail timber immediately after removal; Team lifting mandatory for items >20kg; Wear safety helmets with chin straps, steel-toe boots, and heavy-duty leather gloves. |
P
4
×
S
3
=
12
|
Inspect formwork ties and bracing layout against structural engineering sign-off before concrete pour; Maintain neat stacking and staging areas. |
P
2
×
S
2
=
4
|
| 13 | New Activity sdsadsdsadsadsadsadsadsad | 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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