Determination of human movement parameters when delivering fire extinguishers to the fire centre at water transport facilities
- Authors: Kozhevin D.F.1, Estekhin V.G.1
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Affiliations:
- Federal State Budget Educational Institution of Higher Education "Saint-Petersburg State Fire Service University of the Ministry of the Russian Federation for Civil Defense, Emergencies and Elimination of Consequences of Natural Disasters named after the Hero of the Russian Federation, Army General E.N. Zinichev"
- Issue: Vol 118, No 1 (2025)
- Pages: 39-49
- Section: Scientific and Technical Developments
- URL: https://journal-vniispk.ru/2411-3778/article/view/308620
- ID: 308620
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Abstract
The article presents experimental data on determining the delivery speed of fire extinguishers on ships. The unique feature of the experiment is the effect of the load (the fire extinguisher mass) on the movement speed of the participant.
Existing software products, techniques, as well as published materials do not take into account the influence of the mass and ergonomic characteristics of the fire extinguisher on the time of its delivery to the fire center.
During the experiment the intensity (heaviness) of physical activities was determined, the indicator of which was the heart rate. The analysis of the experimental values indicates that the lowest movement speed of the participants was recorded at the stages where agents had to go through doorways and at the initial stage when receiving a fire extinguisher.
The values obtained with the help of a heart monitor made it possible to determine the intensity of physical activities during the fire extinguisher delivery. It follows that the greater the mass of the fire extinguisher the higher the intensity of physical activity on the participant is, the heart rate increases, and, consequently, the speed of fire extinguisher delivery decreases. During the analysis of the experimental data, it was found that the movement speed of an agent with a fire extinguisher is influenced by the displacement of the center of gravity towards the load.
As part of the experiment, a projection in three planes was built for all participants, indicating the coordinates of the center of gravity both without a fire extinguisher and with fire extinguishers of different sizes. Based on the projection, the angle of deviation from the vector of the direction of movement was found. Due to the obtained experimental values of the movement speed with a load and the values of the deviation angles, the calculated movement speed of agents with fire extinguishers was determined, as well as correction coefficients characterizing the consideration of fire extinguisher mass, which was not taken into account when determining the center of gravity.
Based on experimental data there was determined the reference speed of the agent. Correction coefficients have been determined for each standard size of the fire extinguisher, taking into account the effect of the mass of the fire extinguisher on the agent. Obtained results can be used as reference data, in the form of correction coefficients, when modeling the movement of human flows. Obtained computational and experimental data will be used in the future to develop a unified integrated methodology for basic fire-fighting equipment on water transport. The complex methodology will take into account the layout concepts of a specific object (vessel), as well as the physiological characteristics of the crew involved in the struggle for the survivability of the vessel.
About the authors
Dmitry F. Kozhevin
Federal State Budget Educational Institution of Higher Education "Saint-Petersburg State Fire Service University of the Ministry of the Russian Federation for Civil Defense, Emergencies and Elimination of Consequences of Natural Disasters named after the Hero of the Russian Federation, Army General E.N. Zinichev"
Email: yagmort_kdf@mail.ru
ORCID iD: 0000-0002-6418-107X
SPIN-code: 9647-7196
Candidate of Technical Sciences, Associate Professor, Head of the PHOPGiT Department
149 Moskovsky Prospekt, Saint Petersburg, 196105, Russian FederationVitaly G. Estekhin
Federal State Budget Educational Institution of Higher Education "Saint-Petersburg State Fire Service University of the Ministry of the Russian Federation for Civil Defense, Emergencies and Elimination of Consequences of Natural Disasters named after the Hero of the Russian Federation, Army General E.N. Zinichev"
Author for correspondence.
Email: estekhin@inbox.ru
SPIN-code: 2770-8682
Adjunct
149 Moskovsky Prospekt, Saint Petersburg, 196105, Russian FederationReferences
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