Life cycle cost analysis of the ventilation system in Stockholm's road tunnels
2018 (English)In: Journal of Quality in Maintenance Engineering, ISSN 1355-2511, E-ISSN 1758-7832, Vol. 24, no 3, p. 358-375Article in journal (Refereed) Published
Abstract [en]
Purpose
This study developed a practical economic replacement decision model to identify the economic lifetime of the ventilation system used by Trafikverket in its Stockholm tunnels.
Design/methodology/approach
The proposed data driven optimisation model considers operating and maintenance costs, purchase price and system resale value for a ventilation system consisting of 121 fans. The study identified data quality problems in Trafikverket’s MAXIMO database.
Findings
It found the absolute economic replacement time (ERT) of the ventilation system is 108 months but for a range of 100 to 120 months, the total cost remains almost constant. Sensitivity and regression analysis showed the operating cost has the largest impact on the ERT.
Originality/value
The results are promising; the company has the possibility of significantly reducing the LCC of the ventilation system by optimising its lifetime. In addition, the proposed model can be used for other systems with repairable components, making it applicable, useful, and implementable within Trafikverket more generally.
Place, publisher, year, edition, pages
Emerald Group Publishing Limited, 2018. Vol. 24, no 3, p. 358-375
Keywords [en]
Capital equipment, Economic replacement time, Life cycle cost analysis, Maintenance, Optimization model, Ventilation system
National Category
Civil Engineering Other Civil Engineering
Research subject
Operation and Maintenance
Identifiers
URN: urn:nbn:se:ltu:diva-64975DOI: 10.1108/JQME-05-2017-0032ISI: 000441395400006Scopus ID: 2-s2.0-85051506895OAI: oai:DiVA.org:ltu-64975DiVA, id: diva2:1130009
Projects
LCC-metodik och koppling till Maximo
Funder
Swedish Transport Administration
Note
Validerad;2018;Nivå 2;2018-08-14 (svasva)
2017-08-082017-08-082020-08-26Bibliographically approved