Cranes Safety Protocols for Crane Collapse Prevention on Construction Sites
Crane collapses on construction sites are not uncommon enough. Earlier this month, in a more publicized incident, a crane collapsed at the Sungai Besi-Ulu Klang Elevated Expressway (SUKE) near Puncak Banyan, Persiaran Alam Damai, Cheras.
Senior Minister of Works Datuk Seri Fadillah Yusof has ordered a stop-work order to enable investigation to be carried out on the incident in which a crane tipped over and crushed a car at a construction site. Three individuals were killed in the incident when a launcher crane fell in the construction site of SUKE near Puncak Banyan, Persiaran Alam Damai, Cheras.
Tragic events such as this recent incident have only driven the point further home among the construction industry that we need to follow required and mandated safety measures to prevent future accidents.
(source : MalayMail)
Important Crane Safety Tips
Incorporating standards into your procedures and training is important, but more so are the safety measures in place for each crane service job. Before operating a crane and moving a load, check all parts, such as ropes, rope drums, sheaves, hooks slings, and mechanical components or guards for wear or damage. Rails, wheels, brakes, control buttons, and gears must be inspected as well.
Other pre-operating procedures include checking no lights are burnt out, a fire extinguisher is in the cab, and that no workers are near or on the crane. Crane operators should also check there are no overhead power lines that could obstruct the operation. A minimum distance of 3 metres should be kept from lines of 750 or more volts, while crane loads should be at least 4.5 metres from 150-volt lines and 6 metres from those over 250,000 volts, per guidelines from the Infrastructure Health & Safety Administration .
Even while a crane is moving, inspections should continue. Operators should always check a wire rope has smooth play to and from a drum, that sheaves turn smoothly when a rope passes over, and that both are aligned as the rope enters a sheave. They should also beware of jerky movements and rubbing, clattering, or scraping sounds. The limit switch on the crane for rent should first be tested under no load to ensure it is working properly.
Before lifting, operators should also be sure:
The load is free of loose materials, packing, and parts
The sling and hoisting ropes have no slack
The load does not exceed the maximum load capacity
The lifting device fits properly in the hook saddle
To move loads with minimal safety risks, operators should:
Begin hoisting only if nobody is nearby.
Ensure there are no obstructions to load movement.
Pad sharp edges on the load to avoid rigging damage.
Make sure safety features, such as latches on hooks/hoists, and emergency disconnects, are in place.
Sound a siren or other warning prior to starting.
Maintain smooth movements of crane controls and loads.
Follow signals from only one individual, unless it’s a stop signal.
Check nothing catches on the rising/travelling load.
Maintain control during lowering, even if it means reversing the hoist controller during a brake failure.
The safety risks don’t end when the operator leaves the crane. Before departing, they should remove the load from the crane hooks, raise the hooks to mid-position, and spot the crane at a pre-determined place. All controllers should be turned off before the main switch is closed. These actions are in addition to following equipment load ratings and limitations indicated by the crane service company.
Attentiveness also improves safety. In addition to monitoring the job, a qualified operator should never leave a suspended load unattended. When loads are in the air, they should always have an eye on the controls. Loads should also never be passed over workers, pedestrians, or street traffic; streets need to be closed to avoid injuries if the load can’t be rerouted.
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Article Source : Dozr.com, Malay Mail