Open Session - SWISS GEOSCIENCE MEETINGs

Figure 1. Graphical user interface of DERI NR
Visualisation in WebGIS
WebGIS is an application of Intergraph (BM3)
and is open to all employees of SBB. It visualises
the data from DERI NR on maps or orthophotos.
As a result of the second recording step the record
appears in WebGIS. The user can select a
specific area to overview previous hazards in the
region. Natural hazards can be searched directly
in WebGIS using DERI NR. Vice-versa, a double
click on the visualised events opens the corresponding
documentation in DERI NR.
The constantly updated risk map (figure 2)
shows all sites that require more protection
against natural hazards.
Figure 2. Map of current risk sites
Data recording using DERI NR
DERI NR (Dérangements à l’Infrastructure „Natural
Risks“) is an instrument to report, record and document
natural hazards. Events are continuously
recorded in a central database (based on @enterprise
technology; see figure 1) by the people in
charge of maintaining safety.
In addition, during the next years historic data
will be added. Thereby DERI NR becomes a constantly
updated database of natural risks along
the railway lines.
DERI NR is a workflow instrument with a two-step
recording process. Train drivers, route inspectors
and vegetation keepers register the key data of an
event such as natural hazard type, route number
and route position. The low number of obligatory
data fields helps to report as many events as possible.
Photographs and text documents can be attached.
Depending on the operating point and the type of
hazard, the system forwards the report to the specialist
for natural hazards. As a second step the
event is fully documented. The recording ends
with the evaluation weather more protection
against natural hazards is needed. The recording
process can be reactivated at any time, e.g. to add
data from external risk calculations.
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Symposium 9: Natural Hazards and Risks