Calculation of the Lifetime of Heat and Power Equipment Under Long-Term Static Loading, High Temperature, and the Action of Hydrogen

We propose to use the energy approach for the evaluation of the parameters of durability of structural elements of heat-and-power-generating equipment. As an example of application of this approach, we establish the durability of a drum of steam boiler under the conditions of creep and hydrogenation of the metal. It is shown that hydrogen reduces the period of operation of the metal by more than 15% for the scheduled shutdowns of the boiler and more than by 20% for its emergency shutdowns. We also show that the emergency shutdowns decrease the time to fracture by 30–35% (as compared with the scheduled cooling) for all studied levels of hydrogenation of the metal.