There are many kinds of crane using for lifting materials, goods, equipments.... in assembly, erection, installation, transportation, movement.....You can see by click the play button below.
The most important is how to control and operate in safety condition. Here is general guidelines for crane operation regarding the moving, set up and lifting stages.
* The wheels of a Locomotive Crane must be chocked when working on an incline.
* When lifting a load would you use rail claps instead of outriggers on a Locomotive Crane.
* Ground stability for Mobile Cranes: working close to backfilled ground or an excavation may cause the ground sink or collapse under the exerted pressure of the outriggers, crane weight and the load.
* Correct outriggers extension: do not let the wheels are carrying the load or the outrigger beams are not fully extended. Proper usage of outriggers with tyres clear.
* Outrigger Packing: each layer of packing must be at right angles to the previous layer.
* Load bearing pressure: bearing pressure must be check for outriggers stability. For example: soft clay~ 8ton/m2, dry sand ~40ton/m2, shale~ 80t/m2, dry clay 30t/m2, gravel~50ton/m2....
* Area of packing: determining (by formula) the area for outriggers packing before setting up.
* Setup summary:
+ Outrigger pads are on solid footing or blocking / crane is set up level on firm, stable ground or blocking.
+ All wheels are clear of ground.
+ All outrigger beams are fully extended.
+ Boom angle, boom length and load radius are known and the crane's rated capacity is known.
+ Load weight is known.
+ The hook is directly above the load's C of G
* Crane selection guides:
1. Maximum Radius
2. Weight of Load
3. Clearance Height under Obstructions
4. Distance from Jib Head to Hook
5. Distance from Hook to Ground.
6. Height of Obstruction between Crane and Load
7. Obstructions hindering Counterweight
8. Distance from Crane to any Obstructions
9. Boom Length
10. Ground Condition and other Overhead Services
Note: The total weight of the load is obtained by adding the actual load weight to the weight of crane hook, block, slings, spreaders, shackles and any other lifting attachment- the total of which must not exceed any load capacity listed on any crane rating chart.
Operating factors vary significantly from crane to crane. Always refer to crane operator for guidance and advice.
* Common Obstacles:
+ Overhead Obstructions
+ Personnel at construction site or lifting area.
+ Powerlines
+ Underground services
+ Pedestrians on traffic flow
+ Potholes/soft/rough ground.
* Dual lifts require intermediate riggers certificates:
The person in charge of a multiple crane lifting operation needs to hold which certificate?
* Safe mobiling:
When mobiling a load up an incline , what can happen to a near vertical crane boom?
Why should a mobile crane carrying a load be directed down the incline in reverse?
* Do not drag loads:
Dragging a load can cause structural damage to a crane, damage to the load or damage to the lifting equipment.
The load can swing uncontrollably.
* Danger points:
Personnel must not stand near the chassis of a slewing crane as a person could be jammed or crushed between the slewing upper and stationary lower crane sections
* Boom deflection near overhead powerlines:
Caution, the boom will spring up after the load is released.
* Hand held tag lines:
+ The minimum size of fiber rope for hand held taglines is of 16mm diameter
+ When working near overhead powerlines ensure taglines used are made of non-conductive material such as nature fiber, not synthetic.
* Power Clearance AS2550: take into account that the clearance from live aerial conductors must be sastisfied.
* Safety observer zone: the crane or plant is operating in the " safety observer zone " when any part of the crane or load COULD enter the exclusion zone. Encroachment into the exclusion zone is still strictly forbidden.
The most important is how to control and operate in safety condition. Here is general guidelines for crane operation regarding the moving, set up and lifting stages.
* The wheels of a Locomotive Crane must be chocked when working on an incline.
* When lifting a load would you use rail claps instead of outriggers on a Locomotive Crane.
* Ground stability for Mobile Cranes: working close to backfilled ground or an excavation may cause the ground sink or collapse under the exerted pressure of the outriggers, crane weight and the load.
* Correct outriggers extension: do not let the wheels are carrying the load or the outrigger beams are not fully extended. Proper usage of outriggers with tyres clear.
* Outrigger Packing: each layer of packing must be at right angles to the previous layer.
* Load bearing pressure: bearing pressure must be check for outriggers stability. For example: soft clay~ 8ton/m2, dry sand ~40ton/m2, shale~ 80t/m2, dry clay 30t/m2, gravel~50ton/m2....
* Area of packing: determining (by formula) the area for outriggers packing before setting up.
* Setup summary:
+ Outrigger pads are on solid footing or blocking / crane is set up level on firm, stable ground or blocking.
+ All wheels are clear of ground.
+ All outrigger beams are fully extended.
+ Boom angle, boom length and load radius are known and the crane's rated capacity is known.
+ Load weight is known.
+ The hook is directly above the load's C of G
* Crane selection guides:
1. Maximum Radius
2. Weight of Load
3. Clearance Height under Obstructions
4. Distance from Jib Head to Hook
5. Distance from Hook to Ground.
6. Height of Obstruction between Crane and Load
7. Obstructions hindering Counterweight
8. Distance from Crane to any Obstructions
9. Boom Length
10. Ground Condition and other Overhead Services
Note: The total weight of the load is obtained by adding the actual load weight to the weight of crane hook, block, slings, spreaders, shackles and any other lifting attachment- the total of which must not exceed any load capacity listed on any crane rating chart.
Operating factors vary significantly from crane to crane. Always refer to crane operator for guidance and advice.
* Common Obstacles:
+ Overhead Obstructions
+ Personnel at construction site or lifting area.
+ Powerlines
+ Underground services
+ Pedestrians on traffic flow
+ Potholes/soft/rough ground.
* Dual lifts require intermediate riggers certificates:
The person in charge of a multiple crane lifting operation needs to hold which certificate?
* Safe mobiling:
When mobiling a load up an incline , what can happen to a near vertical crane boom?
Why should a mobile crane carrying a load be directed down the incline in reverse?
* Do not drag loads:
Dragging a load can cause structural damage to a crane, damage to the load or damage to the lifting equipment.
The load can swing uncontrollably.
* Danger points:
Personnel must not stand near the chassis of a slewing crane as a person could be jammed or crushed between the slewing upper and stationary lower crane sections
* Boom deflection near overhead powerlines:
Caution, the boom will spring up after the load is released.
* Hand held tag lines:
+ The minimum size of fiber rope for hand held taglines is of 16mm diameter
+ When working near overhead powerlines ensure taglines used are made of non-conductive material such as nature fiber, not synthetic.
* Power Clearance AS2550: take into account that the clearance from live aerial conductors must be sastisfied.
* Safety observer zone: the crane or plant is operating in the " safety observer zone " when any part of the crane or load COULD enter the exclusion zone. Encroachment into the exclusion zone is still strictly forbidden.
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