PSI - Issue 72

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ScienceDirect

Procedia Structural Integrity 72 (2025) 354–361

12th Annual Conference of Society for Structural Integrity and Life (DIVK12) A New Approach to Fire Resistance Design of Boiler Room Building Structure Ivan Aranđelović а , * , Radenko Rajić b , Nikola Tanasić b a University of Belgrade – Faculty of Mechanical Engineering, Kraljice Marije 16, 11120 Belgrade, Serbia b The Academy of Applied Studies Polytechnic Belgrade, Nade Dimić 4, 11080 Belgrade, Serbia Abstract A significant limitation of the methodology for determining the class of fire resistance, defined by the group of standards DIN 18230, is the inapplicability to industrial facilities in which energy is produced or distributed. In this paper a novel approach is presented in order to determine the necessary fire resistance of the building structure of a boiler room. The method of separating the boiler room from fuel storage, as well as storage and transport of fuel from storage to the boiler room are not considered in the paper. The aim of this paper is to determine the necessary fire resistance of the building structure of a general boiler room. The analysis will include boiler rooms with boilers that use different types of fuels (gaseous, liquid and solid fuels). The proof of the adequacy of the class of fire resistance for building structure will be given independently using the Purt methodology (according to the Euroalarm standard) while the obtained results will be verified by using the Gretener methodology - version TRVB according to the TRVB 100:2010 recommendations and Gretener methodology - version SIA according to the SIA81 recommendations. Assumed fire prevention and protection measures include: installation of an automatic fire alarm system; constant presence of the person on duty next to the fire control panel; sufficient number of fire extinguishers before the arrival of the fire brigade; existence of appropriate fire hydrant installation; professional fire brigade located up to 5 km from the building; access to the boiler room is provided from three sides for the purpose of fire-fighting, i.e. there is at least one opening that can be used for fire-fighting purpose on every 20 m of the walls that border the fire sector. Considering the initial assumptions from presented results it can be concluded that for boiler rooms, in which liquid fuel is not in use, it is sufficient to provide fire resistance of the building structure of 30 minutes. © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Aleksandar Sedmak, Branislav Djordjevic, Simon Sedmak Dr. Simon Sedmak, ssedmak@mas.bg.ac.rs, Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia

Keywords: fire risk; fire load; boiler room; fire resistance time of structures

* Corresponding author. E-mail address: iarandjelovic@mas.bg.ac.rs

2452-3216 © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Aleksandar Sedmak, Branislav Djordjevic, Simon Sedmak Dr. Simon Sedmak, ssedmak@mas.bg.ac.rs, Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia 10.1016/j.prostr.2025.08.114