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Insert image hereIn September 2012, a Technical Meeting was held at the IAEA headquarters to discuss Human Intrusion (HI) and Future Human Actions in relation to Disposal of Radioactive Waste. The discussions focused on various issues such as the difference and commonality of human intrusion scenarios for geological and near-surface disposal facilities and approaches that have been used for such assessments in different countries. As a result of these discussions, a new international project was launched: "HIDRA - Human Intrusion in the context of Disposal of Radioactive Waste". Two Plenary meetings were held for the first phase of the HIDRA project (see below) and the final report has been completed in draft form.


The objectives of the HIDRA project are:

  • To share experience and practical considerations for development and regulatory oversight of assessments of impacts of future human actions, primarily human intrusion, in the context of the safety case during the lifecycle for a disposal facility
  • To provide specific information regarding technical, societal and design considerations to support development of a structured process or methodology for developing scenarios for site-specific application
  • To describe the role of assessments of future human actions for siting, design and development of waste acceptance criteria in the context of the safety case
  • To provide suggestions for communication strategies to describe the rationale for assessments of future human actions and for interpretation of the results of those assessments for the public
  • To provide recommendations for WASSC and RASSC, as appropriate, for clarification of existing IAEA Safety requirements and guidance relevant to the assessment of future human actions and human intrusion.

Outcome from Phase I

Phase I of HIDRA provided guidance on how to address human actions in the safety case and safety assessment of radioactive waste disposal in the future, and then using those assessments to optimize siting, design and waste acceptance criteria within the context of a safety case.

The two-year project involved annual plenary meetings as well as several task group meetings. Each plenary meeting played a pivotal role in presenting and discussing the scope, content and outcome of the project. Individual task meetings were held between plenary meetings to review the progress of specific task activities, and to plan subsequent activities.

Presentations from the first launch of HIDRA

First Plenary Meeting

The first plenary meeting of HIDRA was held in November 2013. Core group members (Chairpersons and Working Group leads) presented current status of Working Group (WG) activities, interaction with other WGs, and work plan during the week.

Following the overview presentations intensive discussions were carried out regarding the methodology on how to select scenarios and protective measures to use to address the HI scenario, and how the factors (developing scenarios, consideration for societal factors, consideration on protective measures etc.) are linked each other in the framework of a safety case.

During the WG sessions participants worked in three WGs to improve the current document. Prior to the conclusion of the meeting progress was reported from each WG lead and the chair.


Second Plenary Meeting

The second and final plenary meeting of Phase I of the HIDRA project was held in December 2014.  Core group members (Chairpersons and WG leads) presented the current status of WG activities. The presentations emphasized the status of the chapters for the Phase I report and plans for the week. Summaries of the PRISMA project and the OECD/NEA Conference on Preservation of Records, Knowledge and Memory (RK&M) across Generations were also provided.

Plenary discussions during the week focused on preparation of a brief brochure for the project and integration of the Working Group Contributions. The three WGs worked independently for the majority of the week to complete their contributions to the project report and input for the brochure.

Prior to the conclusion of the meeting progress was reported from each Working Group chairperson. Thereafter the future activity plan to finish the Phase I report and potential ideas for Phase II of the project were discussed.


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| Last update: Wednesday, 07 June, 2017.