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SUPPLEMENT FOR MOBILE OR TOWER CRANE


Applicable to a CE test or regular inspection.

1. Documents
During the commissioning and regular inspection, the following must be present with the crane:

  • the crane book;
  • the EC declaration of conformity (if the crane was put on the market in the EEA after 1 January 1995);
  • the certificates (or discard standards of the manufacturer) of cables, chains, hooks, blocks, etc.;
  • the complete load chart certified by the crane manufacturer or supplier, containing load-radius values for all possible crane compositions and all instructions for the operator;
  • for regular inspections, subsequent inspections and suchlike, the most recent inspection form;
  • an overall drawing of the crane;
  • the operation, maintenance and assembly instructions;
  • the electrical, hydraulic and pneumatic diagrams.

2. CE test
If this concerns the CE test of a crane type which is being offered for the first time, if applicable the following should also be present:

  • a brochure with the technical specifications of the crane;
  • a list of the standards used in the design of the crane;
  • if not stated on the hydraulic diagram: a list of all pressure settings. In addition, a list with the maximum pressures exerted by the external load in the cylinders used;
  • a list of the switches/sensors used in the limiting devices;
  • the calculation of the design factors in steel cable and chain systems;
  • the prescribed inspection interval for cable/chain systems which are only accessible for inspection after special measures are taken;
  • a list of the nominal diameter of cable drums and runner wheels;
  • a list of the head weights for all common jib configurations;
  • information concerning the discard standards of the turntable;
  • the maximum load exerted on the struts;
  • information/test reports concerning EMC emission/tolerance for electrical/electronic equipment;
  • information/test reports concerning noise emission (place of operation and surroundings).

3. Test load
The client must provide a test load for the performance of the necessary tests.
For CE tests and regular inspections, Aboma adheres to the certification schedule “TCVT W3-11”.
For CE tests, overload tests are also performed in the stability area of the capacity table.
The client provides the test load and the tools for the test and places them close to the crane. It must be possible to compose test loads such that the largest and the smallest test load and a sufficient number of intermediate loads can be realised. The test load may not be made up of parts which are not well connected together and have little rigidity. The maximum test load to be hoisted must have been composed before the testing starts.

3.1 CE test
Mobile cranes/tower cranes
The test loads which are to be composed follow from the standards used for the calculation of the load chart. The largest test load to be composed is based on the maximum overturning moment for the crane.
If the required tests have already been performed by the manufacturer and Aboma can verify this, the relevant tests are not repeated.

3.2 Regular inspection
Mobile cranes
Depending on the type of maximum overload protection (MOP), the test load is determined:

  • Type A
    An MOP in which the load chart is stored as a data set, which determines the overturning moment exercised and then compares it with the allowable hoisting values from the data set, is tested with a test weight which is equal to the maximum winch force of the hoisting winch x the number of reevings with which the crane is offered for inspection.
  • Type B
    An analogue or mechanical MOP is tested for each crane composition with which the crane is offered for inspection with a light-weight, medium-heavy and heavy load. The minimum required test weight for this type of MOP which must be present with the crane is:
    • for cranes with telescopic jib: 1/3 x the maximum load according to the load chart with withdrawn jib
    • for cranes with erected jib: 3/4 x the maximum load according to the load chart belonging to the configuration with which the crane is offered for inspection.

Tower cranes
For testing, test weights must be present which are the size of the maximum loads for the various (mechanical) transmissions and a load belonging to a large radius.

4. Performing tests with load
Testing with loads above public roads, railways or waterways must be avoided as much as possible. If this cannot be avoided, then only after consultation with the competent authorities and with permission from the specialist of the client and after the necessary precautions have been taken such as cordoning off and keeping these roads free and suchlike.

5. Responsibility during tests with load
The client must ensure that a specialist is present at the tests who is responsible for the performance of the tests.

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