Measuring and Monitoring Operational Availability of Rail Infrastructure

Stenström, ChristerLuleå tekniska universitet,Drift, underhåll och akustik (författare)

Validerad; 2016; Nivå 2; 20160512 (chrste)
In reliability and maintenance engineering, availability can be described as the ability of an item to be in a state to perform a required function at a given time. Availability is commonly given as a measure between zero and one, where one means the probability of an item to be available for use at a given time is 100%. Availability is measured in many areas, such as electronics, information technologies, military equipment, electrical grids and the industry. Various indicators related to availability of railways have been examined by academia and industry. However, there is some ambiguity about how to define and measure the availability of rail infrastructure, given railways' semi-continuous operation, besides data quality issues. This article considers the application of common definitions of availability to rail infrastructure. It includes a case study comparing various approaches for measuring availability. The case study ends with a section on how availability as a function of train frequency and maintenance time can be simulated. The results show rail infrastructure availability correlates well with train delay, but this depends on how infrastructure failure data and outliers are treated.

TEKNIK OCH TEKNOLOGIER Samhällsbyggnadsteknik Annan samhällsbyggnadsteknik hsv//swe
ENGINEERING AND TECHNOLOGY Civil Engineering Other Civil Engineering hsv//eng
availability
reliability
dependability
maintenance engineering
railways
linear assets
condition monitoring
Operation and Maintenance Engineering
Drift och underhållsteknik

Parida, AdityaLuleå tekniska universitet,Drift, underhåll och akustik(Swepub:ltu)parkum (författare)
Kumar, UdayLuleå tekniska universitet,Drift, underhåll och akustik(Swepub:ltu)uday (författare)
Luleå tekniska universitetDrift, underhåll och akustik (creator_code:org_t)

Ingår i:Proceedings of the Institution of mechanical engineers. Part F, journal of rail and rapid transit: SAGE Publications230:5, s. 1457-14680954-40972041-3017

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