Bezpieczeństwo Pracy i Ochrona Środowiska w Górnictwie Number 08/2024

At the „ROW" Ruch Rydułtowy coal mine, in view of necessary improvements to the cooling effectiveness of regions below the level of 1000, modernisation of the heat discharge system and group air-conditioning has been performed. Over the next few years, three EH series cooling units will be added to the GMC-1000 cooling unit, built in 2009. Due to the low cooling efficiency of the condensers of these units by the evaporative cooler systems, they were replaced by shell-and-tube heat exchangers serving as exchangers of thermal energy between industrial water in the primary and secondary circuits of the pipelines feeding the condenser cooling system of the coolers. As a power source for the primary circuit, water from the decommissioned Ruch Rymer was used. Because of their high levels of wear and tear, the EH series coolers were subsequently replaced with TS-1200/Z coolers and the power supply was updated. Thanks to this, the number of positions with shortened working hours has been limited along with simultaneous comfort improvement. In addition to this, coolant energy from main drainage system water was used to cool the condenser of the cooling units. Generally, thanks to the limitation in the number of machines and automation of servicing processes and maintenance of group air-conditioning systems, the number of people involved in these activities has been reduced. Everything has resulted in achieving measurable economic benefits while improving comfort and work safety.

In the article, innovative technical solutions implemented by the company MWM Elektro Sp. z o.o. of Trzebinia in mine lift shaft pulleys were presented, paying particular attention to drive systems and their power safety methods. To meet market demands, solutions have been presented to ensure the operation of hoisting machinery even in the event of a main power failure or damage to the components of the primary drive. The stated modernisations form the construction of additional drive along with the power generator as early as the stage of modernisation of hoisting machinery, and enabling the addition of subassemblies for functioning hoisting machine drive systems.

Geological and mining law defines 10 categories of qualifications in the geologist profession regarding activities depending on performing, supervising, and directing geological work, while at the stage of deposit exploitation, it provides only for the qualification of a mining geologist with the skills required for each of these qualification categories. So a mining geologist performs the tasks assigned to every category of qualification for a geologist (with the exception of seismic assessments). Despite such a wide range of skills possessed by a mining geologist, which doesn’t differentiate from geological work at the stage of identifying and documenting a deposit, he cannot create geological projects, identify or explore deposits outside mining areas or prepare documentation of mineral deposits. It’s also misunderstood that a person with the appropriate category of geological qualifications can conduct geological services for mining facilities, and a mining geologist cannot prepare geological paperwork.