"United Mining and Chemical Company" | News | The work on replacement of the pipeline at the VMMP continues

The work on replacement of the pipeline at the VMMP continues
The work on replacement of the pipeline at the VMMP continues


Implementation of the large-scale project for the replacement of the metal pipeline with polyethylene one continues at the Vilnohirsk Mining and Metallurgical Plant, a subsidiary of JSC United Mining and Chemical Company. Since April 1, around 2.5 km of pipelines of the 6 km planned by the company for this year have been replaced.
As of today, it is one of the largest project for upgrading production at the VMMP, which the company started in 2018, having replaced 4.6 km of pipes for the total amount of UAH 46.7 million last year. This year the plans are more ambitious –the company plans to lay 6 km of the new pipeline in 2019.
The replacement of the pipes with a diameter of 630 mm and 450 mm is carried out at the sections of hydrotransport and tailing facilities of the processing production of the plant. As of today, 2.5 km of pipes has been replaced, which is a good pace of work, said Oleksiy Ryabinin, the chief engineer of the subsidiary.
“The use of a polyethylene pipe ensures stable operation of hydrotransport and creates reserves for the repair of the tailings section,” he says. After all, the dismantled metal pipe will be reused at the tailing section for laying new or repairing old pipelines.
The length of one line of hydrotransport pipeline is about 12 km and, according to Oleksandr Yakubovskiy, the head of the hydrotransport section, already 2/3 of one line is polyethylene pipes. Part of this pipeline was experimentally laid in 2011. This pipe has a wall thickness of 24 mm, and in 8 years the wear of the walls was only about 5 mm, which once again proves the feasibility of using polyethylene in our production conditions. “During this period of time, we would have performed a turn, replacement and another turn of the pipes, if they were made of metal. That would all mean costs for the repair and idle time,” the head of the hydrotransport section notes. This polyethylene will be reused in pipeline sections with lower pressure to avoid bursts, and the new one will be put in its place, with a wall thickness of 30-37 mm.”
The work on laying polyethylene pipes is performed by four crews based on the “2 on, 2 off” schedule with two special soldering machines. If the pace of work remains unchanged, the plant will soon replace all 6 km of pipes planned for this year. And the more pipeline is replaced, the more the company will save on repair and idle time, and the lower the production costs will be.