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Variation of airborne particulate levels in a newly built railway tunnel
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Tribologi.ORCID iD: 0000-0003-1291-8778
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Tribologi.ORCID iD: 0000-0002-8000-0013
SLB-analys, Environment and Health Administration, Stockholm, Sweden.
SLB-analys, Environment and Health Administration, Stockholm, Sweden.
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2018 (English)In: Aerosol and Air Quality Research, ISSN 1680-8584, E-ISSN 2071-1409Article in journal (Other academic) Submitted
Abstract [en]

The construction of a new railway tunnel for commuter trains in Stockholm was completed in 2017. It included two modern stations (Odenplan and Stockholm City) with platform screen doors (PSD) and one old station (Stockholm Södra) without PSDs. This study evaluates the concentrations of airborne particulates for the new stations, focussing on the effects of traffic operation, system age and train movement. For comparison, the other old station in the tunnel and an above-ground railway station (Solna) were also investigated. The new Odenplan platform was clean before its opening for traffic (12 and 2 μg/m3 for average PM10 and PM2.5, respectively). Substantial increases in the PM10 and PM2.5 concentrations were observed after it came into service. The average levels of PM10 and PM2.5 increased to 120 and 30 μg/m3 after one week of operation, and increased again to 175 and 35 μg/m3 after 3 months. The train movement factor (traffic frequency and train stop period) was found to have a strong effect on the particle concentrations of coarse sizes (0.3–10 μm). Comparable levels of PM10 and PM2.5 were measured at both the new station and the old station where the traffic frequency was similar. For the other new station, which had half the traffic frequency due to the station design with two separate platforms, the PM10 and PM2.5 levels were substantially lower.

Place, publisher, year, edition, pages
2018.
National Category
Other Environmental Engineering
Identifiers
URN: urn:nbn:se:kth:diva-234246OAI: oai:DiVA.org:kth-234246DiVA, id: diva2:1245345
Note

QC 20180906

Available from: 2018-09-05 Created: 2018-09-05 Last updated: 2019-05-21Bibliographically approved
In thesis
1. Airborne Particles in Railway Tunnels
Open this publication in new window or tab >>Airborne Particles in Railway Tunnels
2018 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2018. p. 50
Series
TRITA-MMK, ISSN 1400-1179
National Category
Environmental Engineering Mechanical Engineering
Identifiers
urn:nbn:se:kth:diva-234234 (URN)978-91-7729-916-5 (ISBN)
Public defence
2018-09-28, Gladan, Brinellvägen 85, Stockholm, 09:00 (English)
Opponent
Supervisors
Available from: 2018-09-07 Created: 2018-09-05 Last updated: 2018-09-07Bibliographically approved

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