Standards · 18
Drawn to the standard.
We check every design against the laws, standards and guidelines that apply to underground cables and pipelines. On top of that, we follow our own rules that no standard requires. We keep the two deliberately separate.
- MV 10 kVNew
- LV 0.4 kVNew
- Gas LPNew
- WaterNew
- DataDuct
- Existing lineKLIC
- Directional drillingHDD
- Trial trenchPS
Which standard, in which phase.
For each standard you see where it plays a role in the project. Filter by topic or choose a phase.
| Standard | What it covers | ||||||
|---|---|---|---|---|---|---|---|
| NLCS | Dutch CAD standardLayers, line types and symbols on every drawing, so it opens at the grid operator and contractor as intended. | Preliminary design | Detailed design | Handover | |||
| BGT | Large-scale topography registerThe national large-scale map we use as the base for route drawings. | Intake and KLIC | Preliminary design | Detailed design | |||
| RD · NAP | Dutch national grid and Amsterdam Ordnance DatumCoordinates and heights of design and survey, transformed according to RDNAPTRANS™. | Trial trenches | Detailed design | Handover | |||
| IMKL | Information model for cables and pipelinesThe data model in which a KLIC delivery arrives and which we process per theme. | Intake and KLIC | |||||
| WIBON | Dutch act on underground network informationOrientation request in the design phase and excavation notification before mechanical digging, via the Kadaster’s KLIC. | Intake and KLIC | Trial trenches | ||||
| CROW 500 | Guideline for preventing excavation damageThe division of roles between client, designer, grid operator and excavator, with a risk assessment per interface. | Quickscan | Preliminary design | Trial trenches | Detailed design | ||
| VCA | Safety, health and environmentOur field team works VCA certified during trial trenches and surveys. | Trial trenches | |||||
| NEN 3140 | Operation of electrical installationsArrangements and authorisations for work near live cables. | Trial trenches | |||||
| NEN 3650 | Requirements for pipeline systemsStrength, stability and loads in the design of pipelines. | Preliminary design | Detailed design | ||||
| NEN 3651 | Additional requirements near hydraulic structuresCrossings of flood defences, waterways and main roads: the standard the asset owner checks the design against. | Preliminary design | Detailed design | ||||
| Grid operators | Liander, Stedin, Enexis and other grid operatorsDesign and drawing requirements per grid operator: materials, burial depth, clearances and the format in which drawings and as-built data are delivered. | Preliminary design | Detailed design | Handover | |||
| Asset owners | ProRail, Rijkswaterstaat and water boardsSpecific requirements for crossings with railways, national roads and waterways, per asset owner. | Preliminary design | Detailed design | ||||
| Omgevingswet | Environment and Planning Act and water board bylawsThe framework for environmental permits and water permits, since 1 January 2024. | Quickscan | Detailed design | ||||
| AVOI | Bylaw on underground infrastructureMunicipal rules for the consent decision, the works and the reinstatement of public space. | Detailed design | |||||
| KNA | Dutch archaeology quality standardThe starting point when the route crosses an area with archaeological expectations. | Quickscan | |||||
| WSCS-OCE | Detection of conventional explosivesThe framework for desk research and detection where unexploded ordnance is expected. | Quickscan | Trial trenches | ||||
| CROW 400 | Working in and with contaminated soilSafety measures when the quickscan or a trial trench points to contamination. | Quickscan | Trial trenches | ||||
| DNR 2025 | De Nieuwe Regeling 2025The standard terms for consultancy and engineering firms in the Netherlands. They govern the assignment, liability and handover, and go out with every quotation. | Intake and KLIC | Handover |
What we add ourselves.
None of this is in any standard. These are rules we impose on ourselves, because they make it traceable afterwards who did what.
Four eyes on every drawing
Whoever makes a drawing does not approve it. A second engineer checks every drawing before it reaches you.
Approval on a fixed version
An approval applies to one specific version of the document. If anything changes afterwards, a new version and a new review follow.
Everything traceable
Every upload, download, change and approval is in an activity log that cannot be altered afterwards.
Data in Europe
Drawings and project data are stored encrypted on our own server in Germany, accessible only with two-factor authentication.
Example

CROW 500 in practice.
Each interface gets a risk class, a measure and an alignment status per grid operator. Before construction, it is clear where extra care is needed and who is responsible for it.
- Risk class per interface
- Measure, such as a trial trench or hand digging
- Alignment status per grid operator
A question about a standard or an asset owner’s requirement?
Put it to one of our engineers. We will take a look, even if your project is still in the exploration phase.