Using FABEL, ENOTRAC modelled the network area Bern – Olten (NBS Mattstetten – Rothrist, Grauholz, Bern, main line Bern – Zollikofen – Burgdorf – Aarburg – Olten, line upgrade Solothurn – Wanzwil) according to the Bahn 2000 plan and with additional heavy freight trains and considered:
Calculation of the electromagnetic fields with the EMFCALC tool as required by the Swiss regulation for protection against non-ionising radiation for the overhead conductor installations of the new line Mattstetten – Rothrist and the line extension Derendingen – Inkwil.
Calculation of the magnetic flux density near "places with sensitive use". Graphical representation of the fields and evaluating the compliance with the Swiss regulation. Validation of the measures taken to reduce the magnetic fields. ENOTRAC later updated the calculations based on as-built conductor positions
During the commissioning of the Mattstetten – Rothrist/Derendingen – Inkwil extension, ENOTRAC conducted various measurements including:
The measurements were taken over a distance of 55 km and had to be completed within 5 days. This required extensive and thorough preparation and planning work. ENOTRAC defined the measurements, conducted the entire planning and coordination between various SBB departments and supervisory authorities and conducted the measurements and analysis.
The radio mast near the new line Mattstetten – Rothrist raised concerns about interference with the railway equipment. To assess the situation, measurements were conducted in the radio frequency range. Since the railway equipment can be a source and a victim, measurements were carried out in two phases, both in the communication radio unit and along the railway installations.
In addition to the tests themselves, ENOTRAC was responsible for the preparation, planning, and coordination between the various players (SBB, V+S and measurement technique, montena emc, radio messaging, Federal Department of Defence, armasuisse).
The masts of the GSM-R antennas in Olten and along the newly built line of Mattstetten – Rothrist, are also partially fitted with antennas belonging to public providers. According to the degree of protection against non-ionising radiation, the compliance with the safety limits had to be verified by measurements. Enotrac co-ordinated and organised the measurements.
ENOTRAC AG, Seefeldstrasse 8, 3600 Thun, Switzerland, Tel: +41 33 346 66 11, Fax +41 33 346 66 12
ENOTRAC SA, Avenue de la Gare 1, 1003 Lausanne, Switzerland, Tel: +41 33 346 66 19, Fax +41 33 346 66 12
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