Case studies

Click-Before-You-Dig at the SAKO

Click-Before-You-Dig at the SAKO

Saarländische Kooperation arbeitet GIS-gestützt mit ArcFM UT

The four utilities in the German country “Saarland” Creos Deutschland GmbH, energis-Netzgesellschaft mbH, Stadtwerke Saarbrücken Netz AG and VSE Verteilnetz GmbH have agreed to cooperate within the “Saarländische Cooperation” (SAKO). One of the areas of cooperation is to provide jointly the network documentation and to use jointly the same GIS. Here SAKO is using the solution ArcFM UT from AED-SICAD AG.

The planning and the preparation of works in the area of the network infrastructure of utilities require from the utilities a reproducible and archived provisioning of information on the location of line data. The four companies of SAKO must provide the information on their respective branches and possibly the branches of further clients according to the German technical guidelines DVGW GW118 / VDE-AR-N4203. For this they are using the product ArcFM UT Click-Before-You-Dig (CBYD). The product CBYD supports this process with a browser-based solution and a graphical user interface which can be used intuitively and where the map plays a central role.

To be able to receive the information on the location of the lines, the users go through three workflow steps. The first step is the simple navigation to the area of interest. Besides the standard navigation functions (zoom, pan) also a simple search function via address data is available. For their supply area, SAKO has its own, geo-coded address set within ArcFM UT, which is used by the CBYD address navigator. This one-line search function completes automatically the entered address data (street, village). Also the used background map within the CBYD solution is a published ArcGIS Server Map Service using the local base map SDE. SAKO currently not foresees to use external map services using ArcGIS Online (e.g. ortho photos, OpenStreetMap).

In the second workflow step, the request area is determined. For this SAKO offers functions to graphically select a square, polygon or line within the UT CBYD map. After the selection of the request area the system calculates the number, size and position of the plots. The user has the possibility to adapt the map scales, paper sizes or overlap between the plots. Also, he may turn or move the plots interactively at the screen. Every change automatically updates the display of the resulting plots.

The third workflow step and the last one before providing the resulting map sheets requires the entry of the necessary additional information such as reason for request, usage, start of construction work, and contact details. After sending the request, the user may at once start with a new request, since the inquiries are processed in the background.

On server side a number of different checks are now executed. Due to the different supply areas of SAKO, the request area is first intersected with the supply area of the distribution system operator (DSO). In case the request area is not within the supply area of the DSO, the requesting party receives a corresponding notice and no maps are created. For requests which are within the supply area of the DSO, the defined map sheets are created and joined to a request package. An additional requirement of SAKO to the UT CBYD product was additional provisioning of the documentation of construction sites. If there is an active construction site within the request area, the associated documents such as surveying sketches and field books are added to the request package. The output of the request package is done by providing a link to a zip file, which not only contains the defined map sheets, but also previously defined static documents, like e.g. summary of request, legend, disclaimer, or safety instructions. This download link is made available via email. The request can be closed for SAKO not until the user actually has confirmed the completeness and readability of the information obtained. This can be confirmed via a link within the received email or also via the order book within the UT CBYD.

All requests and sent information is logged legally compliant. The log information is available to the SAKO administrator within the CBYD administrator interface for flexible analyses according to different criteria. Also a download of the analysis results into Microsoft Excel format is possible.

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