When carrying out to test the lift equipment, the testing agencies must carry out the following tasks:
8.1. Outside inspection
Carrying out respectively following the steps:
- To check the equipment installation location, electrical systems, the guidelines of internal rules for use, protection fence, plan, distance and safety measures, the obstacles need to be paid attention during the testing process; the compatibility of parts, details and specifications of the equipment compared to dossiers, records.
- Respectively consider and the entire structures, parts of the lifting equipment, especially pay attention to the state of parts and details as follows:
+ Metal structure of the lifting equipment, welds, joints rivets, bolt joints of metal structures, control room, stairs, floors and shielding.
+ Hooks and details of hooks.
+ Cable and fixed part of cable.
+ Pulleys, shafts and pulley shaft fixed details.
+ Protection ground part.
+ Rails.
+ Safety equipment.
+ Brakes.
+ Balanced and sustainable weight (consistent with provisions in the equipment records).
- The outside checking result is considered as satisfactory if the checking process, damages or defects are not detected.
8.2. Technical testing – idle testing.
Idle testing is only conducted after the outside checking is satisfied and must be conducted respectively the following steps:
- Assigning specifically between those who join in testing: tester, equipment operators, assistants (cable worker, helper) and person who takes responsiblility to command for safety assurance in the load testing region during the course of load testing.
- Testers and equipment operators (the operators must have a certificate of operation consistent with the equipment) agree to exchange signals, equipment operators shall only implement following the orders of the tester.
- Conducting to test idle to the structures and equipment (item 4.3.2 TCVN 4244-2005), including all structures and electrical equipment, safety devices, brakes and other control devices, lighting, signals, signal sound.
- The above testing is done no less than 3 times.
- Idle testing is considered as satisfactory when the structures and safe devices of equipment work proper parameters and design features when being tested.
8.3. Regime of testing load – Method of testing
Load testing is implemented only after the idle testing is satisfied and must be implemented according to the steps as follows:
8.3.1 Static load testing
- Static load testing of lifting equipment must be carried out by loading with 125% of (Item 4.3.2-TCVN 4244-2005) designed load or the load at request of the using unit (the load at request of the using unit must be smaller the designed load) and must conform to the actual quality of the equipment .
- Static load testing of lifting equipment based on the type of equipment and implemented according to item 4.3.2-TCVN 4244-2005.
- Static load testing is considered satisfactory if with 10-minute load suspension, the load is unchanged, after downloading; the structures and parts of equipment have no cracks, residual deformation or other damages (item 4.3.2-TCVN 4244-2005).
8.3.2. Dynamic load testing:
- Dynamic load testing is implemented only after the static load testing is satisfied.
- Dynamic load testing of lifting equipment must be carried out with load by 110% designed load or the load at request of the using unit (Item 4.3.2-TCVN 4244-2005), the load lifting and lowering is conducted three times and activities of all other structures corresponding to such load must be checked.
- Dynamic load testing of lifting equipment is based on types of equipment and is implemented according to item 4.3.2-TCVN 4244-2005.
- Dynamic load testing is considered satisfactory if, after the above steps are implemented fully, the structures and parts of the equipment work proper designed function features and requirements of current safe technical regulations, have no cracks, residual deformation or other damages.
After the dynamic load testing is done, the equipment is needed to put into normal working position.