Poland – Construction work – Wykonanie instalacji elektroenergetycznej zasilającej urządzenia i wyposażenie zlokalizowane w wyrobiskach dołowych w ramach nowoprojektowanych tras turystycznych w Sztolni Królowa Luiza w Muzeum Górnictwa Węglowego w Zabrzu na podstawie posiadanych projektów wykonawczych

This task covers: • in the area of the Main Key Heritage Adit (GKSD) excavations, the construction of a new 400/230 V power supply installation operating in the TN-S network system, with an earthed neutral point, including: - reconstruction (adaptation) of the existing main switchboard in the Tourist Service Building at ul. K. Miarki 8 (on the surface) – replacement of the existing section (bay) with a new one, - installation of 3 SRCD-… differential circuit breaker boxes (on the surface) in accordance with the design held by the Ordering Party, which is an annex to this procedure, - construction of cable lines powering the designed devices with 400/230V voltage directly from the surface (bypassing the existing 0.5/0.4 kV transformers), - adaptation of the existing technical opening for the purposes of bringing a power cable from the surface (switchboard built in the fan station building) to the underground workings in the area of the main fan station for the complex of underground workings of the Main Key Heritage Adit (Zabrze, ul. Wolności 333). In the above case, the appropriate documentation for the power cable route must be prepared, along with the technology for adapting the existing technological opening, replacing and selecting the existing pipe with the intended one installed in the technological opening being used, as well as lowering and securing the cable in the above opening in accordance with applicable regulations and requirements in this regard. If adapting the existing opening is impossible, the preparation of the design and associated documentation, identification of the necessary agreements and permits related to the development (including costs and cost estimate) of the project in this regard, and the construction of the opening based on this design will be the subject of a separate procedure to be initiated in due course. - installation of 3 ZTN-… cable connectors; - installation of 12 RTN-… distribution boards equipped with outlets adapted to...