GAZTRANSPORT & TECHNIGAZ S.A (hereinafter GTT) takes care to ensure that the collection and processing of your personal data comply with applicable legislation (GDPR and the French Data Protection Act, etc.). The purpose of this policy is to provide you with transparent information on the storage and reading of cookies on the website at

Hereinunder, the term "You" or "Your" refers to any person affected by the processing of personal data subject to this Privacy Policy.

What cookies are stored and read on the site at

The cookies that may be stored are:







Determines whether or not your browser accepts JavaScript.




This cookie records visitors' permission on this point.

101 days

Required (Google


Tracking cookie used by Google to improve your web experience by displaying more relevant ads

30 days

Audience measurement


Stores a unique identifier used to generate statistical data on how the visitor uses the site It counts and tracks page views.

1 day

Audience measurement


Stores a unique identifier used to generate statistical data on how the visitor uses the site

2 years

Audience measurement


Used by Google Analytics to drastically reduce the request rate by filtering out bots.

1 minute

Social media (LinkedIn)


Used to store a user's language preferences


Social media (LinkedIn)


Synchronisation of LinkedIn Ads identifiers

30 days

Social media (LinkedIn)


Used to store data on the timing of the synchronisation with the lms_analytics cookie for users in designated countries

30 days

Social media (LinkedIn)


Browser cookie that identifies each device that accesses LinkedIn to detect abuse of the platform.

2 years

Social media (LinkedIn)


Optimises data centre selection.

24 hours

Social media (LinkedIn)


Used to record the dual authentication status of a logged-in user.

2 years

Video platform (YouTube)


This cookie is set by YouTube video (when you click on a video available on the site) on pages with embedded YouTube videos.


Video platform (YouTube)


A cookie set by YouTube to measure your bandwidth to determine whether you have the new or old interface (when you click on a video available on the site).

6 months

Video platform (YouTube)


A cookie set by YouTube in order to authorise or not the deposit of cookies.

6162 days


Why is your data processed?

GTT uses cookies:

  • to analyse web activity: storing cookies obtains information on the number of visits and traffic to generate statistics to measure site or page performance (consent);
  • so you can see the presentation videos for our activities (consent);
  • so you can follow us on social media (consent);
  • for the site to work correctly (GTT legitimate interest’s to communication with you).

To whom do we forward your personal data?

Your personal data will be forwarded to internal departments at GTT (marketing, sales, management).

Website activity is analysed using Google Analytics, which collects some of your personal data (see the privacy policy here).

In order to communicate, make exchanges with you and recognise you on social media, LinkedIn collects some of your personal data (see the privacy policy here).

In order to share videos with you, YouTube collects some of your personal data (see the privacy policy here).

Under what conditions may your data be transferred outside the European Union?

Cookies used by Google Analytics, LinkedIn and YouTube transfer personal data outside the European Union under standard contractual clauses adopted by the European Commission.

What are your rights and how can you exercise them?

You can withdraw your consent at any time in the cookie module provided for this purpose.

You can prevent the installation of cookies by configuring your computer according to your browser (Internet Explorer, Mozilla, Chrome, etc.). Instructions for configuring your computer to not receive cookies are given on each browser publisher's website.

Other rights:

  • See the section titled "What are your rights?"
  • See the section titled "How can you exercise your rights?"


  • Your right of access

You may exercise your right of access to know whether your data is being processed and have it sent to you in an understandable format. This right also lets you check the accuracy of the data.
For more information: Article 15 GDPR; Articles 39, 40-1 to 43 French Data Protection Act
Go to the CNIL website

  • Your right of rectification

You may exercise your right of rectification to correct any of your data that is inaccurate or to complete data related to the purpose of the processing.
For more information: Article 16 GDPR or visit the CNIL website

  • The right to erasure or the right to be forgotten

The data subject has the right whereby the controller must erase any personal data relating to him/her without undue delay, and the controller must erase such personal data without undue delay when one of the grounds given in the regulation applies.
For more information: Article 17 GDPR or visit the CNIL website

  • The right to limit processing

The data subject has the right to have the controller limit processing in the cases and up to the limits provided for in the regulations.
For more information: Article 18 GDPR or visit the CNIL website

  • The right to portability

Data subjects have the right to receive the personal data they have supplied to a controller in a structured, commonly used and machine-readable format. They also have the right to transmit said data to another controller without interference from the controller to whom the personal data was supplied.
For more information: Article 20 GDPR or visit the CNIL website

  • The right to leave instructions after death

The implementation of this right is subject to a decree not yet passed.
For more information: Article 40-1 French Data Protection Act

  • The right not to be subject to an automated decision

The data subject has the right not to be subject to a decision based solely on automated processing —including profiling— that produces legal effects concerning him/her or significantly affects him/her in a similar way.
For more information: Article 22 GDPR; Article 10 French Data Protection Act or visit the CNIL website

  • You may exercise your rights with the data controller:

By writing to the following address:

Gaztransport & Technigaz, DPO
1 route de Versailles,
78470 Saint-Rémy-lès-Chevreuse

  • You may also exercise your rights with our Data Protection Officer:

By e-mail to
Or by post to the following address:

DPO - ON-X Group
15 Quai de Dion Bouton
92800 Puteaux

Your request will be processed as soon as possible. When making a request to exercise your rights, your personal data will be processed and stored to process the request.

Lodging a complaint with the CNIL

You may lodge a complaint about the processing of your personal data with the Commission Nationale Informatique et Libertés (CNIL, French Data Protection Authority) - - 3 place de Fontenoy 75007 Paris.
For more information on how to lodge a complaint: