Minimum set of instruction crane safety
- 1. A crane is a complex three dimensional hazard The following page lists some of the common hazards found when working around Cranes. This list is by no means exhaustive. PPE The following PPE should be worn when working with cranes. Power Lines Always look up. Power is a major hazard for Cranes. Cranes must stay 4 metres away from any line. You should also use a spotter when working near power lines. Use non-conductive tag lines and if possible earth the crane. Transpower Contacts. If intend to operate equipment near transmission lines, it is mandatory to get the Permit to Work or other type of written authorization by the owner of the overhead power lines. Ground Conditions / Underground Services Crane operators MUST be informed of any underground hazards. Underground hazards include: Suspended slabs Pipes
- 2. Waste Water Storm Water Septic Tanks Water Mains Recent Earth Works / Soft Ground Manhole Covers Fibre Optic / Telecommunication Services Underground Car Parking / Basements The service does not need to be under the crane to present a hazard. It might only be near the crane. People and Plant Crane operations must take into account people and plant moving on site. The risk include plant striking other plant, equipment, personnel, materials etc. - (personnel / static object) Establish Exclusion Zones Take into account exits from buildings into lift area Reduce, control or eliminate simultaneous activities Establish Traffic Control Crane Operations MUST not expose the public to any hazard. Isolate activities from the public. Dropped Loads NEVER walk beneath a suspended load. Always: 1. Wear your hard hat 2. Create exclusion zones 3. Check rigging is appropriate for the task 4. Check the load is free from objects that could fall 5. Keep the load low to the ground when possible 6. Use a tag line where possible 7. Use horn to warn personnel ALL Lifting MUST STOP if an exclusion zone is breached. Crush Injuries Always make sure the operator of the crane shall have a clear line of sight. If approaching the crane the crane operator MUST make eye contact with rigger before enter the crane's exclusion zones or outrigger zone. Be aware of:
- 3. Items being lifted, lowered and slewed. Pinch points (between static objects and moving objects). Slewing crane / counterweight moving. Counterweight raising and lowering. Outriggers extending and retracting. Dunnage handling / tool boxes opening and closing. Weather Environmental Conditions (personnel / environmental) Sunlight (sun strike / sun burn) Heat (Exhaustion, dehydration) Poor Lighting (falls, mistakes etc.) Wet (Slippery) Mud (bogged) Windy (swinging loads) Lightning (Electric Shock) Wind Wind speed is critical for safe crane operations. The following information is guidance only on safety precautions that should be considered for wind. 1. The Load Every load has its own characteristics. Consider: - Wind Resistance - Weight of the load, 2. Crane Manufacturers Limit The manufacturer sets safe limits. See crane rating chart. 3. Crane Operator's Limit The crane operator is responsible for the safety of the plant and the lift. 4. Crane Companies Limit The owner of the crane may impose a limit on operations. 5. The Site Limit Every site is different. Consider site conditions for the lift. Lightning During thunderstorms, a crane boom can become a lightning rod. When thunderstorms threaten, don’t start anything you can’t quickly stop. During thunderstorms, no place outside is safe. But you can minimize your risk by assessing the lightning threat and taking the appropriate actions. Count the number of seconds from when you see the lightning flash until you hear the thunder. If you hear thunder, lightning may be close enough to strike you. Stop what you’re doing and seek safety in a substantial building. If a substantial building is not available, a metal-topped vehicle with the windows up is your next best choice.
- 4. AS A GENERAL PRECAUTION YOU SHOULD NOT RESUME CRANE WORK ACTIVITIES UNTIL 30 MINUTES AFTER THE LAST AUDIBLE THUNDER OR VISIBLE FLASH OF LIGHTNING. Oil Leaks / Fuel Spills Cranes bring Oil, Hydraulic Oil and Diesel to the Workplace. A spill kit and spill response plan should be developed. Plant Movements Cranes and other plant moving on site present a clear hazard. You should always establish a spotter for movements and reversing operations. Overloading Cranes are rated to lift different loads based on a number of conditions, rigging is also rated to lift loads based on its configuration and WLL. These factors are critical for the lift to be safe. It's therefore critical that you work with a reputable company with experienced and competent operators, dogman / riggers who use tools like Lift and Rigging Plans to ensure every lift is a safe lift.