Slings used for lifting heavy loads are made of steel materials. Per the 6331 numbered ‘Occupational Health and Safety Law’, there are some conditions that must be complied with in terms of health and safety. The sling periodic control procedure provides a safe use. Controls carried out according to the specified criteria and standards determine whether the slings have expired.
How to Get Prepared Before Control?
Periodic control, which is carried out depending on standards and regulations, is carried out by different methods. Slings used for transporting loads in shipyards, factories, warehouses and construction sites keep the load in balance. The preliminary preparation stages for the control are as follows:
- Appropriate fasteners are prepared with a test load of 1.1 and 1.25-1.5 times the sling capacity.
- Controls are carried out by authorised and trained personnel.
- Safety precautions are taken around the inspected crane or cranes.
How to Perform Periodic Control of Slings?
Periodic control prevents work accidents in slings. As a result of these controls, which are a legal obligation; deficiencies, non-conformities and dangerous situations are reported. Control steps include:
- Visual Controls: Conditions such as corrosion, deformation and wear are checked. It is also checked whether there are problems such as weakening caused by wetness, cage formation, basketisation, disconnection and scale. Hook and lock controls are carried out.
- Static-Dynamic Tests: The sling is loaded with a load 1.1 times its capacity and tested in motion. 1.25-1.5 times the load is loaded and kept suspended for at least 10 minutes.
Controls are carried out at least once a year by specialised and certified personnel. It is carried out based on many factors such as ambient conditions, frequency and duration of use. Forms are prepared within the framework of national and international manufacturing, as well as the testing standards. Afterwards, physical, mechanical and visual tests and load tests are carried out and recorded in the report.
How to Evaluate Control Results?
The data obtained as a result of periodic control and inspection of slings are labelled as ‘slightly’ and ‘severely defective’. It is determined whether the equipment is safe or objectionable. If the tests have determined that the material is not heavily defective, the report is issued as ‘safe’ until the next control date. If there is non-conformity, it is reported as ‘objectionable’ until the next control time.
After the identified non-conformities are eliminated, a follow-up control is carried out by the A-Type Inspection Board. The equipment is not used until the defects are eliminated and improvements are made. Only after the second control, the inspectors may allow it to be safe to use the product and a document is issued.
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