Řada bezpečnostní inženýrství. 2023, roč. 18 / Safety Engineering Series. 2023, vol. 18
Permanent URI for this collectionhttp://hdl.handle.net/10084/151466
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Item type: Item , Confined Space Fire Simulation in CFAST(Vysoká škola báňská - Technická univerzita Ostrava, 2023) Hodúlová, Dorota; Gašpercová, StanislavaThe Consolidated Fire and Smoke Transport Model computer program is a two-zone fire simulation model that gives each layer a uniform room temperature and gas concentration. The paper highlights two model scenarios that differ in the use of fire protection equipment. the first model scenario features a smoke detector that influences the course of the fire by detecting and signalling its occurrence. In the second model scenario, there is no smoke detector and therefore the course of the fire is not affected by detection and signalling and subsequent intervention. This paper aims to compare the results between the temperature of the upper and lower smoke layer, and the height of the smoke layer in the two simulations.Item type: Item , Testing of Driving Dynamics of Aircraft Rescue and Firefighting Vehicles at the Ostrava Mošnov Airport(Vysoká škola báňská - Technická univerzita Ostrava, 2023) Jánošík, Ladislav; Jánošíková, Ivana; Bürger, RadimThe paper briefly informs about content, procedures, and objectives of a study of driving dynamics of selected Aircraft Rescue and Firefighting (hereinafter ARFF) vehicles that have been used in practice to ensure fire safety at the Leoš Janáček Ostrava Airport. Two characteristic types of ARFF vehicles were selected for testing. Specifically, the vehicles were Mercedes-Benz 3360A 6x4.2 Actros (hereinafter M-B Buffalo) and Rosenbauer 36.705 Panther 6x6 CA5 ECE HRET (hereinafter Rosenbauer Panther). The driving dynamics testing focused on crisis braking in a straight direction, and on driving in a circle at speeds approaching the safe limit for a vehicle rollover.Item type: Item , Determination of the Minimum Ignition Temperature of Ground Sweet Pepper Produced by the Food Industry(Vysoká škola báňská - Technická univerzita Ostrava, 2023) Kosár, László; Szabová, Zuzana; Kuracina, Richard; Kobetičová, HanaThe current article deals with the determination of fire parameters of ground sweet pepper (GSP) dust cloud. The minimum ignition temperature was determined in accordance with STN EN ISO/IEC 80079-20-2:2016 Standard Explosive atmospheres - Part 20-2, using a Godbert-Greenwald furnace apparatus with various dust concentrations, particle sizes, and dust-dispersion-air pressure (10 kPa, 30 kPa and 50 kPa). Three set of different particle size ranges of GSP powder were tested during the experiment, that is, 90 to<150 μm, 150 to<200 μm, 200 to<250 μm. The MIT depends on the particle size and varied by a maximum of 30 K, and values for the individual samples of GSP was in the range 550 - 610 °C. Minimum ignition temperature of the GSP powder was 550 °C (90 to<150 μm, 0.5 g and 50 kPa).Item type: Item , Risk Assessment in Gas Distribution Network Leaks Using the Preliminary Risk Analysis and Eisenberg Vulnerability Method(Vysoká škola báňská - Technická univerzita Ostrava, 2023) dos Santos, Heracleto; Gao, Xuehong; Huang, GuozhongThe natural gas distribution system is made up of an extensive network of pipelines and some equipment such as regulators, valves, filters, meters and converters that require maintenance to maintain operation and identify any gas leaks in advance. The risk analysis process is widely used in the gas industries to locate faults in operations and processes that could cause accidental release of chemicals, fire or explosion and to provide decisions to improve operational risk safety. It was concluded that for risk analysis (PRA) accidents occur due to lack of maintenance in the facilities and equipment set and the Eisenberg Vulnerability Method provided an assessment of the probability of damage to infrastructure and damage to the environment for 1%, 50% and 99% lethality.