Sustainable Development

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TDF strives to make its operations as environmentally-friendly as possible in addition to providing in-depth expertise and customer service that match its customers’ expectations.

A people business

TDF has dealings with numerous internal and external partners


Ethics code


TDF has an Ethics Code that sets out the general principles underlying the Group’s operations in relation to compliance with ethics and current laws.
This is a set of rules that govern how all Group employees should behave and deal with various internal and external people. It reflects our collective pledge to comply with current regulations, follow fair business practices, combat fraud and adopt transparent financial reporting. It helps every employee to decide how to act in real-life situations by reference to a few clear and precise principles.
In addition to the Group Ethics Code, TDF encourages all subsidiaries to prepare and apply their own specific ethical rules in line with the statutory and regulatory environments where they operate.


A few initiatives

Disabled staff:
In Spring 2012, the Human Resources department asked the firm JLO Conseil to carry out a disabled staff diagnosis. The disability committee, composed of a dozen employees, then met to discuss the results of the diagnosis, which meant that strengths and weaknesses could be taken into account when establishing actual actions to be taken within the company:

  • Eight employees from all over the company were trained to become disability references for their colleagues. Their role is principally to inform and support disabled staff and be intermediaries with people involved in converting work stations.
  • Disability week, which takes place in November, is the occasion for proposing communication and handicap awareness activities for employees: simulation workshops, breakfast served by an ESAT (assisted employment center).

Remote working:

Management and trade unions CFDT and CFE-CGC signed an agreement late 2012 to roll out remote working in TDF. Employees can now look forward to working from home one or two days a week.
This agreement was the result of management's desire to reconcile the company's operational and organizational needs with the personal and job requirements of its employees.

TDF's carbon footprint

Greenhouse gas emission totals

TDF has updated its greenhouse gas emission statement (GGES)


This GGES was drawn up by the study firm Qualiconsult and covers the following for 2014:
Direct emissions from fixed and mobile sources and indirect emissions arising from the company’s energy consumed (i.e. from gas, fuel, electricity and leaks of refrigeration fluids). All production sites, offices and vehicles were covered in the study. 
While the previous GGES for 2012 showed 37,293 CO2 ton-equivalents, total emissions for 2014 were assessed at 28,158 CO2 ton-equivalents.
This result was caused by a 28% plunge in indirect emissions arising from electricity consumption even if this remains the principal source of the company’s emissions.
Implementation of new procedures, use of a new generation of less power-hungry telecoms transmitters, and the shut-down of analogue transmitters following the switch to all-digital enabled significant electricity savings and thus a reduction in greenhouse gas emissions.
Following the first GGES in 2012, TDF took a decision to make its employees aware of environmentally-friendly driving and to invest in new low-consumption vehicles so as to minimize fuel consumption during work journeys. These efforts resulted in a 28% plunge in direct greenhouse gas emissions from mobile thermal motor sources.
Finally, as regards direct emissions from fixed sources, which includes heating and cooling mainly from the company’s buildings, emissions of CO2 ton-equivalents edged up 3%. This increase may be due to a greater number of buildings, new procedures introduced, old heating, ventilation and cooling facilities or just slightly more severe weather conditions.
TDF had energy audits carried out for some of its sites so as to identify ways to make additional energy savings. Recommendations made as a result of these audits are currently under review. The company will also continue to build awareness among employees about energy-saving behaviors in buildings and when driving. 

The environment at our sites

TDF has developed a charter for making our sites blend in with their environment. It sets out the commitments the company intends to implement in three areas:

  • Landscaping,
  • Radio-electric,
  • Society.

This policy is a factor in the sustainability of sites and the services they host.


This policy is a factor in the sustainability of sites and the services they host.


Landscaping is handled on two distinct and complementary levels:

  • At regional level (i.e. community, or town etc.) by favoring sites that optimize the various technical constraints by clearly acting as a pool for facilities so as to limit the number of radio-electric sites.
  • At site level (i.e. building, land etc.) by making the site blend into its surroundings. This does not mean hiding or camouflaging its function.





The resources developed take account of imperatives such as quality of service, technical constraints and the cost of solutions TDF can offer customers.

Thus, TDF strives to ensure that colors used match the surroundings (i.e. masts against background, painting the pylon), shape (masts matching the building's architecture) and space (reshaping the immediate surroundings).  
TDF anticipates what passers-by and neighboring populations will see of their facilities, especially in urban settings, and makes every effort to limit their visual impact by choosing sites within groups of buildings and using styles that are easy on the eye (e.g. by using small contained structures, grouping facilities away from terrace edges, etc.).


Radio-electric controls ensure that the general public's exposure to electromagnetic fields is kept below the regulatory thresholds.




TDF maintains an active watch over electromagnetic fields and their health and safety aspects.


Society integration enables the general public and local bodies to have clear and relevant information.


The growth in mobile telephony has required the installation of new radio-electric facilities, raising many questions in the minds of the public and local authorities:

  • What does a phone mast contain?
    Is it dangerous?
    Are there any scientific studies of the subject?

These are natural questions about radio-electric activities. This is why TDF is committed to providing the clearest and most complete answers, especially as regards facilities with dense populations nearby. TDF has a positive attitude to questions and wants to develop constructive dialogue.

TDF is committed to providing clear information for all parties involved, i.e. local authorities and those responsible for sites (i.e. companies, landlords, owners etc.), occupants of sites (employees, tenants etc.), the nearby population and the media, through appropriate communication based on known facts (compliance with standards, measurement programs, results of scientific research etc.).

Exposure of staff working on TDF sites

TDF also complies with European directive 2004/40/EC dated 29 April 2004, which sets rules for exposure within sites.


The highest field levels are found very close to masts where only authorized professionals, who are aware of safety plans and equipped accordingly, have access.
TDF plans to carry out several actions. It has developed extensive knowhow in simulation and measurement, and a training program about exposure risks has been provided for employees. The 250 employees most concerned have received specific training.
TDF has established an approach which ensures that all on-site jobs comply with regulatory thresholds for professional exposure to electromagnetic fields.
Rules for construction of radio-electric service points to reduce field levels within pylons are enforced for all new service points.
To evaluate constraints during radio-electric design for new services or sites, TDF has developed appropriate simulation tools. When designing masts, TDF carries out theoretical measurements and analyses using "Projet 3D"design software . This TDF-developed software calculates radiation from groups of masts in three ways.

Find out more

You can find further information on the following French websites:

Ministry of work, employment and health: health and environment radiofrequencies website,

Details of relay masts and operator obligations


ANSES (previously AFFSET) section Health and Environment  - radiofrequencies (Health and Environment - radio frequencies)

WHO: Electromagnetic fields and public health (site also in English)

Base stations and wireless technologies

Mobile phones

Cartoradio : locations of transmitters, location of measurements, measurement reports

Les ondes mobiles : hints about how best to use mobile phones

TDF's commitments

TDF participates in the activities of the European Committee for Electrotechnical Standardization (CENELEC).


In its site management and radio transmission activities TDF is responsible for compliance with the various regulations and government rules. These set the requirements governing effects of exposure to electromagnetic fields for service providers outside and inside sites.

In addition, so as to limit any radio-electric emissions from its facilities and in compliance with applicable regulations, TDF undertakes to:

  • Minimize electromagnetic fields wherever possible while maintaining quality of service.
  • Supply landlords with technical material for compliance (i.e. diagrams, features of masts, etc.)
  • Carry out programs of measurement of electromagnetic fields in and around sensitive establishments (i.e. hospitals, care homes, schools, nurseries, etc.) on request from the local authority, and on an occasional basis in public or private locations. These measurements are carried out by independent laboratories accredited by COFRAC (French Accreditation Committee). Measurement reports are open to inspection on the website
  • Inform customers hosted at TDF's sites

Regulations concerning the general public

The applicable regulations are those of decree 2002-775 dated 3 May 2002 based on EU recommendation 1999/519/EC.


Limits to public exposure

  • 100 MHz (Radio): 28V/m
  • 470 MHz (Television): 31V/m
  • 900 MHz (TV or mobile phones): 41V/m
  • 1800 MHz (Mobile phones): 58V/m
  • 2100 MHz (Mobile phones): 61V/m

For further information, consult  decree 2002-775 dated 3 May 2002..