"United Mining and Chemical Company" | News | TK-2 stripping complex at VMMP repaired within short timeframes

TK-2 stripping complex at VMMP repaired within short timeframes
TK-2 stripping complex at VMMP repaired within short timeframes


On November 11, technological complex No. 2 was successfully put into operation at the mining and transport production division of Vilnohirsk Mining and Metallurgical Plant, a subsidiary of PJSC UMCC. It will perform stripping works at the open-pit mine No. 7 North
The main stripping works at the VMMP are performed by almost unique rotor complexes, which have very few analogues in Ukraine. These giants save the company substantial funds in stripping works, which is why it is extremely important to maintain their operating condition.
Unfortunately, the complexes are outdates and break down a lot, while production of spare parts for them, as a rule, is performed by a special order and requires a rather long period of time. The latest spare parts for the lifting and dumping boom drives, dumping and collecting conveyer drives, were manufactured in the Czech Republic over 12 months.
Idle time negatively affects planned performance of the subsidiary in general. For this reason, workers of the subsidiary take enormous efforts to repair the complexes within the shortest possible periods. This time, the overhaul of TK-2 was performed within minimum period possible and the repair brigades and contractor organizations worked days and nights to repair ERSHR-1600 as fast as possible, tells Oleksandr Prokopenko, Director of the Vilnohirsk subsidiary.
The stripping rotor complex was shut down in the beginning of September due to the failure of the bearing of the lifting blocks of the boom of the rotor of ERSHR-1600 excavator.
Since the repair of such heavy and large-sized equipment requires super efforts and time, the Vilnohirsk plant decided to be on the safe side. Yevhen Hrytsai, Acting Chief of Mining Works Unit No. 1 (MWU No. 1) informed that given the complexity of the dismantling of the blocks, the management decided to repair not one but all twelve blocks and replace bearings in them. The staff managed to complete the work in a fairly short time – less than two months.
 “The complexity of the work was due to the need to lower the multi-ton boom to the stand, unloading the ropes for further disassembly of the blocks. The construction of the excavator is designed in a way that it must be always balanced from overturning, as the highest point of the pole is nearly 60 meters,” says Hrytsai. The work on preparing the overhaul ground, lowering the boom of the rotor to the stands was performed by the crew, assembly/disassembly of the blocks – by a contractor organization. After disassembly, the blocks of the boom of the rotor were delivered to the Repair and Maintenance Division, where the bearings were replaced.
The idle time of the complex was used to perform other important work. Specifically, during this period, other equipment of the complex went through maintenance checkups, stacking conveyer was shifted and the length of the face conveyer No. 5 was reduced.