Febrication installation of concrete triugh
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Febrication installation of concrete triugh
| Recognize | Assess | Evaluate | ||||
|---|---|---|---|---|---|---|
| Tasks | Potential Hazards | Risks | Risk Rating (FxPxS) | Control | Residual Risk (FxPxS) | Monitor and Review |
Complete HDPE Duct Infill | 1. Vehicle movement and traffic hazards
2. Manual handling during loading/unloading
3. Uneven ground conditions | Personal injury, property damage | 9 | 1. Implement traffic management plan
2. Designated walkways
3. Mandatory PPE
4. Speed limit enforcement | 4 | |
Site mobilization and setup of temporary | Passing high-speed public traffic and moving site vehicles | Personal injury, property damage | 9 | Approved TTM plan, high-visibility clothing (Class 3), physical water-filled/concrete barriers, advanced warning signs, and trained flagmen. | 4 | |
Trench excavation and sub-surface ground preparation | Accidental strike on existing buried live electrical cables or gas utilities | Personal injury, property damage | 9 | Utility mapping review, CAT & Genny cable avoidance scanning, and manual trial pits (pot-holing) prior to mechanical excavation. | 4 | |
Uncoiling, handling, and positioning HDPE pipe | Sudden release of stored mechanical spring energy in coiled HDPE pipe | Personal injury, property damage | 9 | Use of specialized pipe reeler/uncoiler frame, controlled strap cutting procedures, and establishing exclusion zones. | 4 | |
HDPE pipe jointing via electrofusion and | High-temperature heating elements, hot molten plastic, and portable electrical generators | Personal injury, property damage | 9 | Certified welding equipment, RCD-protected generators, heat-resistant safety gloves, and portable fire extinguishers nearby. | 4 | |
Entry into underground chambers and manholes | Hazardous atmosphere (oxygen deficiency, toxic gases like H2S/methane), engulfment, or fall from height | Personal injury, property damage | 9 | Confined Space Entry Permit, pre-entry 4-gas atmospheric testing, forced air ventilation, and tripod rescue system with harness. | 4 | |
Mechanical winch pulling of HDPE sub-ducts | High-tension winch wire snap, rotating capstans, and pinch/nip points | Personal injury, property damage | 9 | Properly rated winching wire with calibrated weak-link swivel, emergency stop switches, and safety guards over rotating parts. | 4 | |
Duct proving (mandrel testing) and air | Uncontrolled high-pressure compressed air release and projectile ejection of foam pig or mandrel | Personal injury, property damage | 9 | Calibrated pressure relief valves, secure containment/catcher cage at receiving duct end, clear exclusion zone enforcement. | 4 | |
Delivery, offloading, and site staging of precast concrete troughs and materials | Heavy vehicle movement, struck by suspended loads, pinch points during offloading | Severe crushing injuries, fractures, structural damage, fatalities | 12 | Traffic Management Plan enforced, dedicated offloading zone, certified lifting equipment and rigging accessories, trained banksman/slinger | 4 | |
Excavation and trench preparation for concrete trough routing | Underground electrical utilities strike, trench wall collapse, cave-ins | Electrocution, severe arc flash burns, engulfment injuries, fatalities | 20 | Review utility drawings, perform CAT and Genny ground scan, digging permit system, implement trench shoring or battering back of slopes | 5 | |
On-site cutting, trimming, and modification of concrete troughs | Inhalation of Respirable Crystalline Silica (RCS) dust, tool kickback, flying debris, high noise levels | Silicosis, occupational asthma, severe lacerations, eye injuries, Noise-Induced Hearing Loss (NIHL) | 12 | Wet-cutting suppression systems or integrated M-class dust extraction, safety guards on cut-off saws, mandatory PPE (FFP3 respirators, impact goggles, ear defenders) | 4 | |
Mechanical lifting and lowering of concrete troughs into the excavation trench | Failure of lifting tackle, dropped loads, encroachment near overhead powerlines | Crushing injuries, electrocution, equipment destruction, fatal strikes | 15 | Approved Lift Plan, certified lifting beams/slings, safety latches on hooks, clear line-of-sight communication via radio or standard hand signals | 4 | |
Activity Log
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3 months ago