Declaration of work in the vicinity of networks (DT-DICT)
Verified 09 April 2025 - Directorate for Legal and Administrative Information (Prime Minister)
The work in the vicinity of underground, aerial or underwater networks must be declared to avoid damage. The declaration shall be sent to all relevant network operators. The project manager made a statement of work (DT) andperforming work then makes a declaration of intent to commence work (DICT). In some cases, DT and TCID may be jointly filed. We're doing an update on the regulations.
Attention: the following work are not subject to of a DT or a DICT:
- Work without a building permit, without impact on underground networks and located, in horizontal projection, more than 5 meters from any overhead electricity network (or 3 meters for low-voltage networks and traction lines of rail or guided transport networks)
- Work subject to building permits, without impact on underground networks, entirely outside the area of any aerial network
- Agricultural and horticultural work for the surface preparation of the soil to a depth not exceeding 40 cm
- Seasonal shifting agricultural work, such as watering and harvesting
- Unforeseeable work carried out in the event of an emergency justified by safety, continuity of public service, the safeguarding of persons and goods or in the event of force majeure which is the subject of an urgent works notice
- Work with operators who have indicated in their DT receipt for the same project that they are not involved and who have not sent any corrections within this period.
DT
The DT makes it possible to ascertain whether the work project is compatible with existing networks by interviewing their operators. Its purpose is to obtain the technical safety recommendations to be applied during the work.
The right of way of the works may not exceed 20 hectares. The right-of-way corresponds to the maximum perimeter of the work area including the site preparation, storage and gear circulation areas.
If the work is located in several areas more than 50 meters apart, a DT is deposited with all operators in each of the areas.
FYI
General technical recommendations are contained in the technical guide for carrying out work in the vicinity of networks.
The project manager, which undertakes earthworks or sounding work, for example, in the vicinity of networks, must to report to each network operator. He may delegate this declaration to a third party (a supervisor, an architect, a design office).
The declarant may be:
- An individual
- A local community
- A prime contractor
- An architect
- A design office
- A network operator when the work impacts underground networks or is close to air networks
- A building or public works company.
You have to declare to all network operators work in the vicinity of security-sensitive networks and non-security-sensitive networks.
The security-sensitive networks are:
- Transport, distribution and mining pipelines containing liquid or liquefied hydrocarbons, liquid or gaseous chemicals, combustible gases
- Pipelines for transporting or distributing steam, superheated water, hot water, chilled water or any other heat transfer or refrigerating fluid
- Electrical lines and public lighting systems other than ultra-low voltage and other than electrically insulated low voltage overhead power lines
- Installations for the use of public transport vehicles by rail or guided transport (subways, trams, cable cars, etc.)
- Pipes for transporting waste by pneumatic pressure or suction device
- Structures designed or adapted to prevent flooding and submersions
- ‘Non-sensitive’ networks recorded as ‘sensitive’ by the operator on the online service.
The non-sensitive networks for safety are:
- Underground electronic communications facilities
- Other ultra-low voltage power lines and public lighting systems and insulated low voltage overhead power lines
- Sanitation pipes, containing domestic or industrial wastewater or storm water
- Pipes for the abstraction and distribution of water intended for human consumption, for the supply of industrial water or water intended for fire protection, pressure or free flow, including underground water tanks.
To locate networks and obtain operator contact information, the project manager must either query the "Networks and Pipes" online service or contact a provider or to the town hall concerned by the project if there is no internet connection.
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Networks and Pipes Online service
The online service " Networks and pipelines’ is the one-stop shop for network operators. It makes it possible to locate all networks impacted by the work.
It shall be made available to the contracting authorities and to those carrying out the work.
Online service Networks and Pipelines
By consulting this online service, the project manager obtains:
- Operator Contact Information of networks
- Plan of the right of way of the work project with geo-referenced coordinates
- Network plan in permanent shutdown
- Cerfa Form DT/DICT reporting format partially pre-filled for each operator.
Consult a provider
The provider must have an agreement with the manager of the online service "Networks and Pipes", which is the National Institute of the Industrial Environment and Risks (Ineris).
Consult the City Hall
If there is no internet connection, the registrant may contact the town hall concerned by the work project.
In the DT, the project manager provides the following information:
- Date of commencement of work
- Duration in days
- Right of way of the site (maximum perimeter of the work area including site preparation, storage and gear circulation areas)
- Operations which could have a impact on works located on or near the construction site.
The project manager sends a DT to each network operator by the online service ‘Networks and pipelines’. He can call on a provider agreed with the online service manager. He can also deposit the form at the city hall concerned by the project of work in case of lack of connection to the Internet.
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Networks and Pipes Online service
The “Networks and Pipes” online service provides a pre-filled paperless form.
Form
The single DT-DICT form is divided into 2. The Work Statement (WDR.) is on the left.
The project manager It includes the unique number of consultation assigned by the online service "Networks and Pipelines".
Declaration of draft works (DT) and declaration of intent to commence work (DICT)
All network operators have an obligation to respond to the project manager. They shall meet a response time starting after the date of receipt of the RFP.
For a Web-based DT, the time limit is 9 calendar days.
For a DT not transmitted via internet, it is 15 calendar days.
Public holidays are not counted.
The time limit may be extended by 15 calendar days if the network operator is required, in the presence of the registrant, to carry out on-site location measurements with the best possible accuracy.
The operator must respond by sending the project manager a receipt with the network location plans. This receipt is sent by registered mail, fax or e-mail.
A form for the receipt of the project work declaration and the declaration of intent to commence work (DT-DICT) is available:
Project Work Declaration and Commencement of Work (DT-DICT) Receipt
The operator's response provides the project manager with the information needed to carry out the work under the best possible safety conditions. It details the following:
- Location of existing works
- Specific technical recommendations related to the configuration of works
- Specific recommendations to be taken according to the planned working techniques
- Headings concerning specific works or works of the technical guide for carrying out work in the vicinity of networks
- Reporting of safety-critical devices within the right-of-way.
The response may also include further investigations to update the plan of the networks located on the site right of way. In this case, the project manager must have these investigations carried out by a certified company before work commences. They are at the expense of the network operator.
Where the contract or the work order is not signed within 3 months of the date of consultation of the online service, the TBD must be renewed.
This is not necessary if the works contract provides for technical and financial measures to take account of additional works or modifications to works. However, this must not jeopardize the project.
DICT
The purpose of the TTID is to indicate to network operators the precise location of the proposed works and the work techniques that will be used.
It enables network operators to obtain information about network locations and recommendations to prevent network damage.
Please note
The TCID is not obligatory for operators who have indicated that they are not concerned in their response to a DT of less than 3 months and have not sent any corrigendum within that period.
The DICT is made by all companies doing the work. Every subcontracting company must also make a DICT and thesend to all operators of networks concerned by the site.
The TCID is in principle transmitted after the DT.
In order to locate the networks and obtain the contact details of the operators, the person carrying out the work must either query the “Networks and Pipes” online service or contact a provider or to the town hall concerned by the project if there is no internet connection.
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Networks and Pipes Online service
The online service " Networks and pipelines’ is the one-stop shop for network operators. It makes it possible to locate all networks impacted by the work.
It shall be made available to the contracting authorities and to those carrying out the work.
Online service Networks and Pipelines
By consulting this online service, the project manager obtains:
- Operator Contact Information of networks
- Plan of the right of way of the work project with geo-referenced coordinates
- Network plan in permanent shutdown
- Cerfa Form DT/DICT reporting format partially pre-filled for each operator.
Consult a provider
The provider must have an agreement with the manager of the online service "Networks and Pipes", which is the National Institute of the Industrial Environment and Risks (Ineris).
Consult the City Hall
If there is no internet connection, the registrant may contact the town hall concerned by the work project.
The project manager transmits the received items in response to the DT to the various companies performing the jobs. It shall provide them, if necessary, with the result of any further investigations.
In the DICT, the performer shall provide the following information:
- Date of commencement of work
- Duration in days
- Right of way of the site (maximum perimeter of the work area including site preparation, storage and gear circulation areas)
- Operations which could have a impact on works located on or near the construction site.
The performer shall transmit the DICT by:
- Networks and Pipes Online service
- Provider agreed with the online service manager
- Town hall concerned by the project of works in case of absence of internet connection.
He/she makes his/her declaration on the "Networks and Pipes" online service or using the DT/DICT declaration form cerfa.
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Networks and Pipes Online service
The “Networks and Pipes” online service provides a pre-filled paperless form who wears the unique consultation number of DT and the DICT.
Form
The performer y enter the unique consultation number assigned to project manager by the online service ‘Networks and pipelines’.
Declaration of draft works (DT) and declaration of intent to commence work (DICT)
The declaration is made on the single DT-DICT form which is divided into 2. The DICT fills up on the right.
All network operators have an obligation to answer to the operator of the works. They shall comply with a response time starting after the date of receipt of the TCID.
For a DICT transmitted over the Internet, it is 7 calendar days.
For a DICT not transmitted via internet, it is 9 calendar days.
Public holidays are not counted.
The operator must respond by sending the person performing the work a receipt accompanied by the network location plans. This receipt is sent by registered mail, fax or e-mail.
Project Work Declaration and Commencement of Work (DT-DICT) Receipt
The response of network operators provides the operator of the works with useful information to carry out the work under the best possible safety conditions. It details the following:
- Location of existing works
- Specific technical recommendations related to the configuration of works
- Specific precautions to be taken according to the planned working techniques
- Reporting of safety-critical devices within the right of way, if any.
Work cannot begin until the receipt of all receipts.
The TCID shall be renewed in the following cases:
- Work not commenced within 3 months from the date of consultation of the online service or of a provider approved by Ineris
- Changes to information about or running jobs
- Work interrupted for more than 3 months
- Work lasting more than 6 months in the vicinity of sensitive safety networks (e.g. oil and liquid or gaseous chemicals, steam lines).
Joint DT-DICT
In some cases, it is possible to speed up the procedure. The project manager sends the 2 declarations simultaneously: one Joint DT-DICT.
The project manager may choose to perform a joint DT-DICT when it is not physically possible to wait for the response to the DT to issue the work commitment order to the performer and if the order includes technical, administrative and financial clauses.
This is particularly the case when the project manager is also performing work.
Joint DT-DICT can also be used in the following cases:
- Unit operations of which the geographic footprint is very limited and whose implementation time is very short: the laying of a branch or a pole, the planting or pulling of a tree, the drilling of a well, the carrying out of a borehole for soil surveys, the carrying out of excavations as part of additional investigations, the carrying out of unforeseen additional work of limited scope
- Work Right-of-Way Area affecting the ground (earthmoving, sinking, drilling, pickling, compacting...) not exceeding 100 m².
It's the project manager who chooses to do a joint DT-DICT.
It must be completed by executing it that the project manager has mandated to complete the 2 DT and TCID components.
In order to locate the networks and obtain the contact details of the operators, the operator must either interrogate the “Networks and Pipes” online service or contact a provider or the town hall.
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Networks and Pipes Online service
The online service " Networks and pipelines’ is the one-stop shop for network operators. It makes it possible to locate all networks impacted by the work.
It shall be made available to the contracting authorities and to those carrying out the work.
Online service Networks and Pipelines
By consulting this online service, the project manager obtains:
- Operator Contact Information of networks
- Plan of the right of way of the work project with geo-referenced coordinates
- Network plan in permanent shutdown
- Cerfa Form DT/DICT reporting format partially pre-filled for each operator.
Consult a provider
The provider must have an agreement with the manager of the online service "Networks and Pipes", which is the National Institute of the Industrial Environment and Risks (Ineris).
Consult the City Hall
If there is no internet connection, the registrant may contact the town hall concerned by the work project.
In DT-DICT, the executor provides the following information:
- Date of commencement of work
- Duration in days
- Right of way of the site (maximum perimeter of the work area including site preparation, storage and gear circulation areas)
- Operations which could have a impact on works located on or near the construction site.
Joint DT-DICT is transmitted by:
- Networks and Pipes Online service
- Provider agreed with the online service manager
- Town hall concerned by the project of works in case of absence of internet connection.
He/she makes the declaration on the "Networks and Pipes" online service or using the DT/DICT declaration form cerfa.
Répondez aux questions successives et les réponses s’afficheront automatiquement
Networks and Pipes Online service
The “Networks and Pipes” online service provides a pre-filled paperless form who wears the unique consultation number of DT and the DICT.
Form
The declaration is made on the single DT-DICT form which is divided into 2.
The performer y enter the unique consultation number assigned by the online service ‘Networks and pipelines’ to project manager.
Declaration of draft works (DT) and declaration of intent to commence work (DICT)
All network operators have an obligation to answer to the operator of the works. They shall respect a response time starting after the date of receipt of the joint DT-DICT.
For a DT-DICT transmitted over the Internet, it is 9 days.
For a DT-DICT not transmitted via internet, it is 15 days.
Public holidays are not counted.
The answer takes the form of a receipt with network location plans that the project manager receives by registered mail, fax, or email.
Project Work Declaration and Commencement of Work (DT-DICT) Receipt
The response from operators brings the project manager the information necessary to ensure that the work is carried out under the best possible safety conditions. It details the following:
- Location of existing works
- Specific technical recommendations related to the configuration of works
- Specific recommendations to be taken according to the planned working techniques
- Technical guide headings for specific works or works
- Reporting of safety-critical devices within the right-of-way.
Work cannot begin until all report receipts for safety sensitive works in service have been received.
One-stop shop: ‘Networks and pipelines’ online service
Measures to be taken when preparing draft works
Checks, penalties and adjustments
Work in the vicinity of electrical lines, pipes and installations
Online service
Ministry of Urban Planning