Across the Netherlands, nearly 2 million kilometres of cables and pipelines are laid for the transport of data, electricity, gas, and water. Ground-disturbing or excavation work frequently causes damage to these cables and pipelines. Damage to cables and pipelines can lead to inconvenience and safety risks, while subsequent repairs and restoration are costly.
According to the WIBON law (Wet informatie-uitwisseling bovengrondse en ondergrondse netten en netwerken), it is mandatory to gather information about the presence of cables and pipelines before starting any work. Many of these cables can be found in the KLIC database. However, it is common for locations in the KLIC database to deviate by more than a meter from the actual situation. Additionally, many cables and pipelines are unregistered, known as orphan pipelines.
T&A assists excavators and clients in mapping out cables and pipelines. We conduct a comprehensive investigation in accordance with CROW 500 and WIBON. The requirements from WIBON have been incorporated into the CROW 500 as practical guidelines.
With our team of experienced soil specialists, we can map all surface-detectable cables and pipelines within 10 working days for smaller locations. If trial trenches are required or if cables and pipelines are deeper than 1.5 meters, this timeline will double. The timetable will be:
Day 1 – Quotation
Customer submits a quotation request via our website. We process the request immediately and send a quotation within two working days.
Day 3 – Plan of Approach
Upon receiving the order, we will submit a KLIC notification and draft a plan of approach, briefly outlining the geophysical techniques to be used.
Days 3-9 – Soil Investigation
Within five working days, the actual geophysical soil investigation begins. The latest technologies are used to measure cables and pipelines in the study area, including ground-penetrating radar (GPR), metal detectors, magnetometers, radio detection, and sub-bottom profilers.
Day 10 – Completion of Investigation and Report
After the desk and fieldwork, the results are analyzed by a data analyst. You will receive an overview map (PDF and CAD/GIS) showing the exact horizontal and vertical position of the cables, and pipelines, along with their probable types, where possible.
Until day ten, all work is conducted above ground, without disturbing the soil. However, if the geophysical survey detects significant deviations from the KLIC database or orphan pipelines, we offer trial trench investigations at a competitive price. This is also applicable for detecting unexploded ordnance (UXO), archaeological remains, contamination, or site restrictions imposed by landowners or water authorities. The timetable for a trial trench investigation will look as follows:
Day 15-19 – Trial Trench Research
We excavate trial trenches up to 1.5 meters deep to verify the actual presence and location of cables and pipelines.
Day 20 – Final Report
The previously provided results are supplemented with findings from the trial trench investigation.
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