Research on the impact of diesel generator fire on building structures of enclosed spaces

Abstract

The work established the spatial-temporal dependencies of the change in the temperature regime of a diesel generator fire in a closed room depending on the height and distance from the combustion center, and also determined critical temperature ranges for different zones of the room. Quantitative dependencies of thermal loads on enclosing and supporting structures on the diesel fuel combustion scenario were obtained, which allow predicting the loss of fire resistance of structures and justifying the requirements for their fire resistance class and fire zoning of generator station premises. As a result of the conducted numerical and full-scale fire studies, it was established that fires of diesel generator sets in closed rooms are characterized by rapid development and formation of critical temperature regimes, capable of leading to the loss of the bearing capacity of building structures in a short time. The obtained results confirm the feasibility of using computer modeling together with experimental studies for the scientific substantiation of fire safety requirements and fire resistance of generator station premises in buildings of various functional purposes