<p>The vibration-isolated foundations are currently employed for the installation of gas and steam turbines with heat recovery steam generators, which allows, with appropriate soils, to avoid harmful consequences associated with uneven foundation settlement, while simultaneously protecting the turbo-unit-foundation-base system from increased vibration. However, when using vibration-insulated foundations, there are cases of the cogeneration steam turbine the thrust bearing shoes overheating with an increase in the thermal load of the upper cogeneration steam extraction to the second horizontal network water heater. It takes place when there is no compensation for the thermal expansion of steam extraction pipelines. The article presents the results of a finite element method analysis, which explains the reason for these limitations as uncompensated vertical movement of the steam pipeline of the upper extraction when it is heated by steam directed to second horizontal network water heater. A comparison of the behavior in this situation of foundations on rigid supports and vibration-isolated foundations is given. Recommendations are given to prevent overheating of the thrust bearing shoes of the steam heating turbines installed on vibration-isolated foundations.</p>