During operation of the crane, situations can arise in which the individual components are subject to higher stress than expected.

This can result in damage that might be detected too late in the regular inspection at the previously specified test intervals.

Nevertheless, safe operation must be ensured for these components as well.

It may thus be necessary to check individual components of a crane or entire modules especially frequently. These additional tests are then regularly required at briefer intervals in addition to the regular inspection.

Examples:

─     The risk assessment has revealed that certain components (e.g. brakes or wire ropes) are subject to especially high stress.

Example: In a food-processing facility, a wire rope is not permitted to be lubricated for reasons of hygiene. The risk assessment clearly shows that this wire rope is subject to especially high stress. It must therefore be checked more frequently in addition to the regular inspection.

─     The repeated failure of a component has subjected it to especially high stress.

Example: On a crane, the brake lining became worn a second time within a short period due to especially high stress. It must therefore be checked more frequently in addition to the regular inspection.

─     The operating conditions were changed and it is not known if these operating conditions place more stress on the crane than before.

Example: The crane is used for a new operation. The load-bearing components of the crane, especially the wire rope, must be checked more frequently in addition to the regular inspection until damage due to the new operating conditions can be ruled out.

─     The crane was placed under unusually high stress due to a near-accident.

Example: A load was inadvertently caught with the crane. The load-bearing components of the crane, especially the wire rope, must be checked more frequently in addition to the regular inspection until damage can be ruled out.

The end user is responsible for the inspection of components under especially high stress. The end user also specifies the inspection and test intervals at which the highly stressed components are to be checked. These test intervals can be considerably shorter than the regular inspection.

ABUS Service will gladly provide assistance if needed. See ABUS Service.

The end user of the crane is responsible for the proper qualifications of the examiner. For the qualifications, see Test before initial commissioning.