During load testing, cranes are intentionally subjected to excessive loads in order to assess their operational capabilities. It is imperative that the cranes are able to safely lift and move the loads under normal operating conditions. Typically, the crane lifting equipment is subjected to overload tests of up to 125% to ensure compliance with OSHA standards. Daily inspections are conducted to scrutinize hoist chains, wire ropes, and locks, while comprehensive or rigorous load tests should be conducted semi-annually or periodically.
To ensure the safety and productivity of your operators and workplace, it is crucial to stay updated on the latest practices regarding crane load management and ensure that your crane equipment is in optimal working condition. This section provides valuable insights into the essential pre-service operational inspection and load testing procedures that are required.
These protocols are standard parts of Crane maintenance and training programs:
- It is imperative that all cranes are installed in strict accordance with the provided specifications.
- Every crane must undergo a proof test at least once every four years following the initial proof testing.
- After any modifications or repairs, it is mandatory to conduct both proof testing and operational testing on all cranes.
All newly installed or modified overhead cranes must undergo a thorough inspection and testing to verify the proper functioning of the following essential features:
- Hoisting and lowering operations
- Trolley Travel
- Crane locomotion or bridge travel
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Why is crane load testing done?
Rated load testing
Load testing should not exceed 125 percent of the rated load unless specifically recommended by the manufacturer. When it comes to workplace safety, it is crucial not to overlook any aspect of the equipment inspection and support process, including thorough testing of equipment prior to its operational use.
When should crane load testing be done?
Prior to initial use, all newly installed or modified cranes must undergo comprehensive testing to ensure compliance to the requirements outlined in this section including the evaluation of the following key functions:- Hoisting and lowering
- Trolley travel
- Bridge travel
- Limit switches, locking, and safety parts
The trip function of the hoist limit control needs to be thoroughly tested by gradually increasing the speed of an empty hook up to the maximum speed limit. The control device responsible for activating the limiter should be positioned in a manner that ensures the switch is triggered under all circumstances, allowing enough time to prevent any contact between the hook or hook block and the trolley components.
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