Cookie Policy

What is a cookie?

A “cookie” is a file that contains small amounts of information that is downloaded on your computer -or other device- by accessing certain web pages and that gathers information regarding your browsing on the websites. Once downloaded into your device, your browser sends these cookies in subsequent visits to the websites already visited, providing them with information (such as, for example, the browser used, the language selected, the number of times you have visited the page, etc.), in order to facilitate, personalise and make the navigation more effective according to the information provided by cookies.

What type of cookie do we use?

Our website uses cookies to personalise the content and provide you with a customised, efficient browsing. We use cookies to help us to identify your browser and the language that you use, as well as other characteristics of your browsing patterns, with the aim of directing you to the suitable home page and facilitating you the navigation on our website. We use identifiers, such as IP addresses to obtain the number of individual visitors that access to our website, their geographical location, and their usage trends across the different pages that make up the site. In no case shall we use cookies to personally identify the user.

By browsing our website you accept the implementation of cookies, which you can control and administrate using the properties of your browser. Note that removing or blocking cookies may affect your browsing on our website, and it is possible that some functions may not be available and may even disable browsing.

The website uses cookies with different functionalities:

Our website cookies installed on the users’ devices are not everlasting, rather, depending on their functionality, they have a limited permanence: from those cookies that delete themselves at the end of a browsing session, to other cookies that expire after 24 hours, up to the longest lasting cookies which expire 365 days after they were last updated.

The following table displays the first-party and third-party cookies that the website current uses and the purpose for which each one is used:

1f616252c666968921000a2b5ef44e1c At the end of the browsing session    
c48b3f668f69f01659341181a9bb31e8 365 DAYS Users’ preferred language. Impacts on the functionality of the Web
cookieaccept 365 DAYS If users have accepted the cookies Disablement of the browsing on the website
_ga 1 day This type of cookie is associated with Google Universal Analytics- which is an update of the commonly used Google analysis service. This cookie is used to distinguish unique users by assigning them a number as a client identifier. It is included in each website request and is used to calculate visits, sessions and company data for the analytical reports of the website. By defect, they expire after 2 years, but this can be modified by the website owner. Impacts of the functionality of Google Analytics
_gat   This type of cookie is associated with Google Universal Analytics. Pursuant with their documentation, they are used to speed up the ratio of requests, limiting the gathering of data on websites with lots of traffic. They expire in 10 minutes. Impacts on the functionality of Google Analytics
_gid 1 day This type of cookie is associated with Google Universal Analytics. It saves and updates a unique value for each web page visited. Impacts on the functionality of Google Analytics
_streamio_session At the end of the browsing session    
JSESSIONID At the end of the browsing session Platform session cookie with a general purpose. Used on sites written in JSP. It is normally used to maintain the users’ session anonymous for the server. Impacts on the management of users.

This website uses “Google Analytics” analysis cookies, an analytical web service provided by Google, Inc. with registered address in the United States with central headquarters at 1600 Amphitheatre Parkway, Mountain View, California 94043. For the provision of these services, cookies are used which gather the information, including the users’ IP address, which will be transmitted, processed and stored by Google in the terms established on the website, including the possible transmission of said information to third parties for legal reasons or when said third parties process the information on behalf of Google. The configuration of these cookies is predetermined by the service offered by Google, as such we recommend that you check the Google Analytics privacy page to obtain more information regarding the cookies they use and how to disable them, understanding that we are not responsible for the content or veracity of third-party websites.


Users can allow, block or remove cookies stored on their device through the browser setting options on their computer. Please read carefully the corresponding help section on your browser to learn more about how to activate the “private mode” or unblock certain cookies:

Enresa wishes to point out that the variation of cookies that this website handles cannot be related to its management and maintenance. Consequently, reviews are carried out periodically to improve and update Cookies Policy.

Enresa does not assume any liability which may arise from legal or technical problems caused due to non-compliance with the recommendations included in this policy. This communication is made for inform the users and, therefore, it should not be used for any other purpose. Likewise, responsibility for the content and veracity of the privacy policies of third parties included in this Cookies Policy is not assumed.

If you have any question regarding the Cookies Policy outlined in this document, you can contact us at


Enresa can modify this Cookies Policy pursuant to the legislative or regulatory requirements, or in order to adapt that policy according to the instructions given by the Spanish Data Protection Agency. For that reason, users are advised to check this policy regulary.


Enresa’s commitment to R&D has enabled the improvement and optimisation of every one of their processes, driven technological progress and positioned Spain as an international benchmark in radioactive waste management.

Enresa focuses its efforts on R&D in areas where industrial solutions are not fully implemented and where there is potential for improvement and optimisation.

Enresa's 8th Research and Development Plan(8th R&D Plan), 2019 – 2023, aims to:

  • Provide the knowledge and the tools that enable progress in the development of management strategies implemented in Spain, with the objective that they are safe, appropriate, acceptable and viable for all types of radioactive waste.
  • Develop and validate the technologies that enable the development of these management strategies.
  • Improve and optimise the management mechanisms already in place, in an ongoing and systematic manner.
  • Foster the social, scientific and political acceptance of the management mechanisms in use by means of clear, fluid and open communication, conveying confidence and transparency.
  • Ensure that the advances made through R&D are applied to the management of radioactive waste, improving safety and cost efficiency.

R&D Plan structure: Areas & Lines

Following the structure of former R&D Plans, Enresa has established four technical areas of work in the 8th R&D Plan (2019-2023),and a fifth one on cross-cutting activities:

Area 1

Waste Technology and know-how

This includes activities related to the understanding of the physical and chemical properties of the components of radioactive waste, as well as their evolution over time and the impact of their irradiation history.

Research and development in this area focuses on the following lines:

  • High level waste and spent nuclear fuel.
  • Low and intermediate level waste and very low-level waste.
  • Basic properties of radionuclides.

Area 2

Technology for Treatment, Conditioning and Dismantling Processes

This area of the Plan includes all actions that may be carried out on radioactive waste for the purposes of conditioning prior to emplacement, reducing volume and radiotoxicity, and other actions applicable to the dismantling of nuclear facilities and radioactive facilities.

R&D Lines in this area are:

  • Treatment of radioactive waste.
  • Decontamination (optimization).
  • Dismantling.
  • Immobilisation.
  • Other technologies: separation and transmutation.

Area 3

Confinement Materials and Systems

This area aims to acquire and expand know-how and technology relating to the materials used as barriers in storage and disposal facilities, such as cement, clay and metals, taking into account both their individual and their combined usage.

R&D Lines in this area are:

  • Characterisation and behaviour of barrier materials.
  • Behaviour of confinement systems.
  • Storage and disposal systems and technologies.
  • Monitoring of materials and confining systems.

Area 4

Safety Assessment, performance assessment, radiological protection and associated modelling.

The object of the works included in this area is related to radiological protection and safety studies. The Area 4 aims to improve the numerical models used in evaluations of the security of storage facilities over the short, medium and long term. Various scales are taken into consideration, from micron to regional scales.

R&D Lines in this area will are:

  • Assessment methods and models.
  • Modelling of systems and processes.
  • Environmental restoration.
  • Radiological protection.
  • Climate and soils in waste management.

5th Area: Cross-cutting activities

Knowledge Management and Coordination

This R&D Area deals with the coordination, integration and management of all research and development activities. This is intended to ensure coordination of the projects and to integrate and deliver their results to Enresa’s radioactive management activities.

Also included in this area is the technological and scientific dissemination activities, whose purpose is to provide internal support in the effective implementation of R&D.

Projects Developed in Partnership with Other Entities

Enresa regularly cooperates with the Centre for Energy-related, Environmental and Technological Research (Ciemat), Spanish universities and companies, and other foreign Radioactive Waste Management Agencies and Research Centres.

Projects undertaken in partnership with other entities can be grouped as follows:

  • Projects developed with foreign organisations.
  • Projects developed with Spanish entities.
  • Projects developed within the Framework Programmes of the European Atomic Energy Community (Euratom).
  • Participation in R&D technology platforms.
  • Participation in fora related to radioactive waste management.

Technology forecasting

Enresa actively participates in platforms, such as CEIDEN , PEPRI , IGD-TP and fora for exchange of experiences at the national and international level, which makes us maintain a high-level international position in radioactive waste management.