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IGD-TP Symposium and Webinar: The role of optimisation in radioactive waste geological disposal programmes

Symposium: 11-13 January 2022, Webinar: 26 January 2022

SIX ConventionPoint,

Pfingstweidstrasse 110,

8005 Zurich,


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Event postponed!

We are sorry to announce that, due to Covid-19, we have decided to postpone the IGD-TP Symposium and Webinar.  Recent concerns about the latest Covid-19 variant have led to various governments increasing their travel and quarantine measures, including the Swiss Government.  Given this change and uncertainty regarding the status of restrictions in early January 2022, we have decided to postpone the IGD-TP Symposium and Webinar.

There is a strong desire to hold the Symposium as an in-person event to ensure as much free discussion as possible.  Therefore, we have decided to postpone the event rather than make it a virtual one.  As the webinar follows directly on from the Symposium, this linked event is also postponed.  A new date will be determined in the next few months, but it is likely to be in late summer/early fall of 2022 – this will be announced in the spring.  We plan to keep the same event programme, speakers, posters and panellists.

As we are postponing, rather than cancelling the event, we plan to carry across all registrations for the Symposium and Webinar made so far.  If you would prefer that we remove you from the registration list, please inform secretariat@igdtp.eu.  In addition, we will carry across your Symposium registration fee to the new event date, but if you would prefer a refund instead then please inform secretariat@igdtp.eu.

We are sorry to make this decision, but we hope this helps to clarify your plans.  Stay safe!

Geological disposal projects are first of a kind projects, span several decades, and are multi-billion endeavours.  In order to build and operate repositories safely, to make consistent progress, and to ensure efficiency, optimisation of all aspects plays a critical role and is a continuous activity throughout its implementation.  While safety optimisation is well established, also through international guidelines, optimisation of the implementation of geological disposal has gained increased attention.  This symposium and webinar aim to summarise the status of the main aspects of repository optimisation from a technical-scientific viewpoint and to discuss future directions.

To enable access and involvement of all interested parties, the event will be held in two parts.  The first, physical event, will consist of a two-day meeting in Zurich with sessions on:

  • the role of optimisation in selected national geological disposal programmes
  • technology and material optimisation
  • lessons learned from optimisation in large infrastructure projects
  • integrating optimisation for safety
  • global optimisation approaches – concepts and numerical applications

A number of side events will also be arranged to make the most of attendee time.  Registration for such meetings will be arranged separately to the Symposium.

The third day will provide an opportunity for attendees to tour the Mont Terri underground research laboratory, the ZWILAG interim storage facility or a Nagra drill site as part of the ongoing exploration programme for the site selection process (see below for facility descriptions).  Tour numbers are limited.

The second part of the event will consist of a live webinar that will include a panel discussion and question and answer session.  Talks and posters presented at the Symposium will be recorded and made available online, prior to the webinar.  It will be possible to submit questions for the webinar panelists in advance on the IGD‑TP website and during the webinar.

Interested parties can attend the Symposium, the Webinar, or both events.

Scientific Committee

Irina Gaus (Nagra, Switzerland) Chair

Ingo Blechschmidt (Nagra, Switzerland)

Johanna Hansen (Posiva, Finland)

Tiina Jalonen (Posiva, Finland)

Axel Liebscher (BGE, Germany)

Jon Martin (RWM, UK)

Maarten Van Geet (ONDRAF/NIRAS, Belgium)

The draft programme is available here

Symposium: 11-13 January 2022, Zurich, Switzerland  Postponed! New date to be confirmed.

Webinar: 1330-1600 CET, 26 January 2022, Online  Postponed! New date to be confirmed.

Practical Information

Further Information

Further information will be added to this page as it becomes available.  For any other queries please contact secretariat@igdtp.eu

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