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Failure and reliability analysis of heavy firefighting and rescue vehicles: a case study

Selech Jarosław, Rogula-Kozłowska Wioletta, Piątek Piotr, Walczak Agata, Pieniak Daniel, Bondaronok Paweł, Marcinkiewicz Jacek

Eksploatacja i Niezawodność

2024

Vol. 26, no. 1

art. no. 175505

The purpose of the article was to analyse the reliability, maintainability, and availability estimates of firefighting and rescue engines. Analysing the reliability parameters of heavy firefighting and rescue vehicles over time requires knowledge of their failures. In this article, failure data from the six years of maintenance of ten heavy firefighting and rescue vehicles from ten were analysed in relation to two main subsystems. Reliability analysis was performed and the best-fit distribution was found, with the parameters calculated. For both subsystems, the chassis combined with the cabin and the superstructure, the 2P-Weibull distributionwas identified as the most suitable fit. The availability and maintenance indicators for each vehicle and the individual subsystems were calculated. It was clearly defined that there exists a significant difference between the two subsystems analysed in terms of failure characteristics, as well as maintainability and availability parameters.

Symulacja wytężenia przylgni ratowniczej okrętu podwodnego wywołanego naporem pojazdu ratowniczego

Flis L.

Mechanik

2010

R. 83, nr 2

112-114

Przedstawiono badania symulacyjne wytężenia przylgni ratowniczej okrętu podwodnego Marynarki Wojernnej ORP Orzeł. Symulowano obciążenie konstrukcji naporem pojazdu ratowniczego na głębokości zanurzenia do 700 m. Obliczenia prowadzono wg wytycznych normy NATO NAVSEA SS700-AA-INS-210. Spełnienie wymagań normy jest warunkiem dopuszczenia polskiego okrętu do współpracy z pojazdem ratowniczym z USA.

Presented are the faying surface effort tests as performed for Polish Navy Ship ORP Orzel. Effort of the structure subjected to the load applied by a rescue vehicle in draught down to 700 m depth was simulated. Calculations were carried out according to standard NATO NAVSEA SS700-AA-INS-010. Standard requirements are to be met by Polish ships in order to obtain permit to match with the US rescue vehicle.