Forum : Évacuation des déchets

Au Canada, les propriétaires de déchets sont responsables du financement, de l’organisation, de la gestion et de l’exploitation des installations, des emplacements ou des sites d’évacuation, ainsi que de toutes les étapes applicables de la gestion des déchets, nécessaires à leurs déchets radioactifs.  

L’évacuation est l’étape finale de la gestion des déchets radioactifs, et désigne le placement des déchets radioactifs sans intention de les récupérer. Les activités de gestion et d’évacuation des déchets sont soumises à des exigences politiques nationales ainsi qu’à un cadre réglementaire pour la sûreté.

Les décisions relatives aux méthodes d’évacuation peuvent varier d’un pays à l’autre, en fonction de facteurs tels que la politique nationale, la géographie, les types de déchets, le volume, la mobilisation des Autochtones et du public, les facteurs environnementaux et socioéconomiques.

Avant de participer à la discussion, veuillez lire les lignes directrices sur la modération du site Web de mobilisation en matière de gestion des déchets radioactifs et sur la publication de commentaires.

Dites-nous ce que vous en pensez

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1. Quels sont, selon vous, les facteurs politiques importants qui devraient influencer le choix des méthodes d’évacuation par les propriétaires de déchets et qui devraient être pris en compte dans le cadre de la politique canadienne en matière de déchets radioactifs?

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2. Quels devraient être les rôles et les responsabilités du gouvernement, de l’organisme de réglementation et des propriétaires de déchets en ce qui a trait aux installations d’évacuation des déchets radioactifs, notamment :

  • Le financement;
  • La fermeture d’une installation d’évacuation et son contrôle institutionnel;
  • La mobilisation des Autochtones et du public et participation à la sélection du site et aux opérations post-fermeture?

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Commentaires

Portrait de Matthew Mairinger
fév 8, 2021 - 11:47

I think after the "specific landfill disposal" bullet point additional criteria should be added to explain when this would be used and to stress this would not be utilized for LLW/ILW/HLW. REGDOC-2.11.1 does not mention "landfill disposal" so I believe it should have clarifying details in the policy.

"The waste owner is also responsible for implementing those plans and ensuring that funding is in place to maintaining institutional control, unless that responsibility was transferred to a third party"- should this be clarified to identify how long the control must be maintained? Should there be a mention of optimization or about revisiting LNT assumptions for when control would no longer be required?

In regards to the question about whether the State's disposal facilities would only accept radioactive waste of national origin or from other States as well I believe there should be a clause added which would state that if we accept fuel from an international origin (i.e. SMR fuel, "spent" PWR/MOx/BWR fuel for feedstock in CANDU reactors, etc.) we should accept disposal responsibility for the waste rather than shipping the waste internationally for disposal. Essentially if we are utilizing the international fuel for domestic energy and are therefore gaining usefulness from the import we should accept responsibility for disposal rather than transporting it back internationally for disposal.

Ultimately I agree that we should continue with the Adaptive Phase management and not be in a rush to permanently dispose of spent fuel as there are technologies/reactors which can still extract energy from them but I strongly encourage the creation of a spent fuel repository as the lack of this facility has been used as an argument that nuclear should no longer be pursued.

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Portrait de David Wood
fév 16, 2021 - 04:32

The municipality of South Bruce along with Ignace are the two remaining communities that may be considered "a willing host" for disposal of all of Canada's spent nuclear fuel. The concept for disposal is by way of a deep geological repository (dgr).
The municipality of South Bruce, where I have been a resident for over 30 years and served on council for two terms in my opinion, is currently split on support for this proposal in spite of several million dollars already contributed from the Nuclear Waste Management Organization (NWMO) to the community's "well being". This division has occurred in spite of the process for community discussion or should I say the learning process that has gone on for 10 years now. For the most part the learning process has almost entirely focused on whether the science is good to support this project. However, most residents are of the rural agricultural sector not nuclear scientists and have no expertise to review properly. And those residents who can make their living at the Bruce Power nuclear station and would likely be favorable to the NWMO's proposal as it would enhance the marketability of nuclear power for having solved it's decades old waste dilemma.
In getting to an agreement with a rural community such as South Bruce to be a "willing host" on such a massive ($28 billion estimate) project, one that will truly impact the quality of a rural community of less than 6,000 two things have to occur in the next 2 years:
1. An honest learning process has to take place regarding the socio-economic impacts of this project has to occur led by someone other than the NWMO
2. Assurances have to be made that a formal referendum takes place in the upcoming 2022 municipal elections on a question reviewed and supported by the community as to whether South Bruce is a willing host.

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Portrait de Anonymous
Anonymous
mar 10, 2021 - 15:52

Winston Churchill stated “The further backward you look, the further forward you can see”. Who could have imagined the strides man has made in the last 50 or 100 years? To bury and abandon this problem is to shortchange all future science and technologies. There are too many unknowns at present. Placing radioactivity in disturbed limestone, packed with clay, under a major watershed, river and amidst an aquifer that adjoins the Great Lakes is an experiment we do not want. Leave the waste where it is, move it off the lakeshore, fortify it, and look to the means that would irradiate it. We steer in the direction we look. A less perilous solution is possible, if the will is there to find it.

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Portrait de Peter Baumgartner
Peter Baumgartner
mar 16, 2021 - 13:20

Other than radium and uranium mine wastes, no nuclear waste disposal facility of any kind has been sited nor built in Canada. Sweden, Finland, France, United Kingdom and USA, just to mention a few, have sited, constructed, licensed and are operating some select disposal facilities. There is still no facility, policy nor program in Canada to do so. Hollow, words include:
• Specific landfill disposal
• Near-surface disposal
• Facilities constructed in caverns, vaults or silos below ground level
• Borehole disposal
• Geologic disposal
• Disposal stabilized in-situ”
All the above examples are stabilized geologic disposal and should be reclassified as follows:
• Surficial disposal on or in soils
• Pit or near-surface disposal in soils
• Shallow rock disposal (open pit, underground excavation, boreholes)
• Deep rock disposal (underground excavation, boreholes)
The choice of disposal method is dependent on the nature and quantities of the waste, the quality of the available geology and the natural processes and events (e.g., ground water transportation, continental glaciation).
The example “Disposal stabilized in-situ” is a complete misnomer intended to obfuscate another term called “in-situ decommissioning” as used in the Decommissioning Discussion Paper, that tend to mislead the leaders and the public.
The usage of broad, non-descript terms such as “Existing licensed long-term management facilities include those related to uranium mines and mills tailings, as well as the Port Hope Area initiative projects” as described in the Waste Disposal Discussion Paper should instead use the term Disposal Facilities, to ensure clarity. But the introduction of the Port Hope Area Initiative projects into the Waste Disposal Discussion Paper and not into the Waste Storage Discussion Paper clearly implies that this Project has moved from Waste Storage to Waste Disposal without appropriate public hearings presenting this case. Nowhere in the Port Hope Environmental Assessment is the word “Disposal” used. Elsewhere on-line, the subject of water treatment from the “Storage Mounds” is mentioned. So, which is it, are the Port Hope Area Initiative Mounds classified as Waste Storage or Waste Disposal and are they still an Initiative or a “fait accompli”?
“For purposes of this EA, the term “abandonment” is interpreted to mean the cessation of all forms of planned, designed human intervention at the decommissioned LTWMF for the purposes of managing or controlling potential environmental or human health and safety concerns associated with it. Abandonment of the LTWMF prior to its decommissioning (i.e., with waste materials still contained within it) is not considered viable or responsible stewardship” (Marshall et al. 2005).
Marshall, Macklin Monaghan Limited. 2005. Port Hope Project. Environmental Assessment Study Report. Low-Level Radioactive Waste Management Office LLRWMO-0

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Portrait de Peter Baumgartner
Peter Baumgartner
mar 18, 2021 - 10:22

No matter how the radioactive waste is produced in Canada (mining, milling, refining, reactors, R&D, medical and non-medical isotopes, decommissioning, etc.), the Policy must elucidate a clear path forward towards disposal, else management cannot be achieved. This should include tentative start and end points for all waste streams, including their times and locations. These are called plans. Do not shy away from plans. The public and utilities work with them every day. Confidence cannot be gained in policies without illustrative plans with time lines and sources of funding. Since Canada invokes the “user pay” principal, this should not be a significant problem.
The longer waste disposal is delayed, the greater will be the costs for interim storage including the unnecessary proliferation of “in-situ’ disposal sites for legacy R&D reactors and their associated ILW and LLW. Ultimately, they may require re-excavation by future governments who may be required to live up to higher standards.
The greatest cost for delayed Waste Disposal is the potential extremes associated with Waste Minimization including its costs. Delay in disposal requires increased storage plus its continuing care and maintenance plus the continuing care and maintenance of non-decommissioned facilities. This also invokes the process of reducing and containing the volume of the contaminated wastes to levels beyond what should be considered practicable. The cost trade off should consider the ratio of the cost for the safe removal of the waste volume from the environment versus the cost for the excavated ground volume (soil or rock) and their associated operations for each volume.
One of the greatest problems associated with the legacy wastes at CRL and WL are the quantities and assays of the deposited ILW and LLW on the waste management sites. Preliminary estimates of the volumes and radionuclide content of LLW and ILW to 2008 (Baumgartner 2011) are ranked as preliminary in that the current inventory is incomplete, partly due to very limited waste-characterization practices in the past (i.e., limited to either needing or not needing radiation shielding), limited compilation of waste-receipt records in a comprehensive database and the loss of waste-receipt records in a fire at CRL predating 1956. An arbitrary quantity of Used Fuel was added to the CRL inventory in lieu of this knowledge. This lack of knowledge undermines any safety case for “in-situ” disposal of the legacy wastes at the CRL and WL sites.

Baumgartner, P. 2011. Preliminary estimates of AECL’s current and future low- and intermediate-level radioactive wastes. Atomic Energy of Canada Limited Report 361101-01613-REPT-001 Rev. 4

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Portrait de Anonymous
mar 23, 2021 - 18:08

This paragraph seems to permit nations to include or exclude from its radioactive waste management policy four considerations that I think should not be optional, but rather mandatory parts of the policy.

1. The state should be required to inform the public of its plans for radioactive waste management and disposal, especially nearby communities and First Nations on whose land a disposal site or dump could be built, and to consult them for help in making decisions. For First Nations, this constitutes free, prior and informed consent, and indicates to the public that the state is acting in an open and transparent manner.

2. The state should not be permitted to send any radioactive waste to any disposal site from any point of origin, domestic or foreign, without informing and obtaining consent from affected communities and First Nations. Communities and First Nations must have the right to refuse to host such facilities, and to refuse the construction and operation of waste reprocessing, or fissile material extraction, facilities.

3. It should be mandatory for the state not to impose undue financial, health and safety, environmental, and national and international security risks on future generations as an ethical imperative. This should also be the case for present generations, because the actions we take now will impact those who come after us.

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Portrait de Ole Hendrickson
mar 28, 2021 - 15:11

Preservation of Records, Knowledge and Memory (RK&M) across generations is essential for responsible long-term radioactive waste management.

The Final Report of the OECD RK&M Initiative says: "Radioactive waste repositories are designed to isolate waste from the living environment without human intervention over extended periods of time. Nevertheless, the intention is not to abandon the repositories, but to provide the oversight that is necessary to ensure that they are not forgotten by society. In response to this challenge, the Nuclear Energy Agency launched the international initiative “Preservation of Records, Knowledge and Memory (RK&M) Across Generations”."

Earlier, a workshop organized by the United Nations Education, Scientific and Cultural Organization (UNESCO) examined this topic. The 1997 UNESCO Declaration on the Responsibilities of the Present Generations towards Future Generations says “the present generations have the responsibility of ensuring that the needs and interests of present and future generations are fully safeguarded”.

Some principles that emerged from that workshop follow:

Radioactive waste is an iconic example [of the UNESCO Declaration]. By striving to maintain and provide access to records as well as to allow knowledge to persist or be reconstituted if lost, and by propagating the memory of these legacies we will fulfil our responsibility to enable future members of society to make knowledgeable decisions. Our responsibility extends over centuries and millennia, as long as these legacies will last.

Enabling future members of society to make knowledgeable decisions is part of responsible, ethically sound management of environmental and other impacts of the legacies we leave behind.

The relevant institutions should plan for continuing oversight. This is also in line with a prudent approach for protecting health and safety.

Preparing for future RK&M preservation is best addressed while a project leading to a legacy is being planned, designed, implemented and funded.

The long operational phase of some of these projects creates opportunities for the development of inclusive and workable RK&M strategies.

Throughout the operational phase institutional stakeholders must prepare for any stage when their own roles will be reduced and responsibilities will be transferred to others.

Collaborations with other bodies in various sectors in society, both nationally and internationally, provide important benefits.

In conclusion, preserving Knowledge, Records and Memory of Radioactive Waste is among the most important obligations of government, the regulator, and waste owners with regards to radioactive waste disposal facilities. Radioactive waste "disposal" does not remove this obligation. "Disposal" facilities cannot be abandoned. Continuing oversight is needed to ensure they are not forgotten by society.

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Portrait de Erwin Dreessen
Erwin Dreessen
mar 28, 2021 - 16:34

With radioactive wastes there is no such thing as disposal in the ordinary sense of the word. These wastes will always be with us. The issue therefore is how they are to be managed in long term storage. Management of storage facilities should be by an independent agency that is arms-length from government and industry. Management processes should be designed to continue in perpetuity.

To the principle of polluter pay should be added the principles of a precautionary approach and pollution prevention.

No storage facility should be near a water way or where leakage could end up in groundwater.

Wastes should always be retrievable.

Transportation of wastes to a storage facillty should be minimized.

There should be complete transparency regarding all policies and practices. The public has a right to know. Indigenous communities should be fully engaged and have right of refusal.

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Portrait de Peter Ottensmeyer
mar 31, 2021 - 14:28

In any discussion of disposal of waste one should first pause and consider whether one is actually dealing with waste. This is especially true of used nuclear fuel waste as defined in the Nuclear Fuel Waste Act, as it emerges from our CANDU reactors.
Used CANDU fuel, although some of its heavy atoms have a radioactive life of close to a million years, is not waste. Therefore should not even be considered for disposal. Less than 1% of the uranium fuel has been used and converted into already massive amounts of non-carbon energy. To jettison the remainder is like licking a chocolate bar once and chucking the rest.
The very first reactor to produce electricity from nuclear energy, the EBR-I in 1951, showed how to utilize the other 99% of the fuel. It required enriched fuel, which Canada wanted to forego since it easily leads to a path of nuclear weapons. We built the CANDU, a thermal reactor fuelled with natural uranium, yielding an industry best 0.74% of the nuclear energy in the fuel. All other thermal reactors are worse at about 0.55% of the potential energy of mined uranium. The remainder for all of them is considered waste, wrongly.
But the EBR-I was a fast-spectrum reactor, like some of the small modular reactors (SMRs) proposed for Canada at present. With recycling of its fuel, as shown for its larger cousin, the EBR-II, it could consume all of the heavy atom in the uranium fuel, leaving only split-atom fission products that decay in days, weeks, months and years, with only to atom types, Sr-90 and Cs-137, having half-lives of 30 years, much shorter than the million year life of current used fuel.
Two SMRs proposed now for Canada, the SSR-W of Moltex and the ARC-100 of Advanced Reactor Concepts have recycling of used CANDU fuel as part of their modus operandi. Both processes involve electrorefining in molten salt, like pyroprocessing worked out at the Argonne National Laboratories and operating there since then. The process residues are those fast-decaying fission products, with heavy atoms recycled as fuel and working fluid salts recycled as electrolytes. The remainders are therefore minimal, requiring temporary storage until they decay to valuable stable atoms and minerals whose worth can be calculated as about $3 million per ton.
However, that number pales in comparison to the $60 trillion of non-carbon electricity plus process heat that can be extracted from the heavy atoms in the current used CANDU fuel.
With such an imminent prospect planned even now for Canada’s expansion for nuclear energy, disposal should not even be part of the discussion for used CANDU fuel, nor for any such fuel emerging from future SMRs. We just have to pick recycling through fast-spectrum reactors.

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Portrait de Ole Hendrickson
avr 1, 2021 - 12:45

Many people were shocked by recent reports that our former Prime Minister has been part of a scheme to import high-level radioactive waste from around the world for disposal in Labrador. Canada's radioactive waste policy should clearly state - "No imports of radioactive waste." .

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