title: Compliance boundaries for train protection systems.
abstract: Occupational exposure to non-ionising electromagnetic radiation emitted by train protection (TP) systems operating at ∼27 MHz is investigated in situ. In total, five TP systems of two different types, i.e. KVB (Contrôle de Vitesse par Balises) and TBL1+ (Transmission Balise-Locomotive), are considered. For each type, the boundaries outside which the field levels are in compliance with the International Commission on Non-Ionizing Radiation Protection guidelines for occupational exposure ('compliance boundaries') are determined. Maximal fields of 4.7 A m(-1) and 0.2 kV m(-1) for KVB, and 51 A m(-1) and 1.5 kV m(-1) for TBL1+ are measured, at distances between 10 and 25 cm from the respective antennas. Compliance boundaries for occupational exposure are maximally 0.6 m for KVB to 1 m for TBL1+, while no specific compliance boundary is needed for the general public.
authors.affiliation: Department of Information Technology, Ghent University/iMinds, Gaston Crommenlaan 8, Box 201, B-9050 Ghent, Belgium.
authors.forename: Sam
authors.initials: S
authors.lastname: Aerts
authors.forename: Leen
authors.initials: L
authors.lastname: Verloock
authors.forename: Luc
authors.initials: L
authors.lastname: Martens
authors.forename: Wout
authors.initials: W
authors.lastname: Joseph
mesh_terms: D004574:Electromagnetic Fields / Q000009:adverse effects*; D019983:Guideline Adherence; D006801:Humans; D016273:Occupational Exposure / Q000032:analysis* / Q000517:prevention & control*; D011835:Radiation Protection / Q000592:standards*; D011890:Railroads; D017751:Safety Management