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 CEPMLP Annual Review 3, 1999 - Article 5
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How is the international nuclear community addressing the issue of nuclear decommissioning? Is there a need for regulation on an international basis?
by Lee G. J. Thomson

Abstract

The decommissioning of nuclear sites and facilities is a growing area of concern for the international nuclear industry. Over the next two decades, over 500 nuclear installations will be potential candidates for decommissioning. Each project will have to consider various issues pertaining the process of decommissioning ranging from environmental considerations and costs, to that of guiding regulations. This paper analyses the international regulations and guidelines applicable to nuclear decommissioning and considers whether or not the national regulations in the United States and Germany can contribute to a better international regime.

1 Introduction

The first generation of nuclear power plants was commissioned in the late 1950's and early 1960's. At that time, the issue of what to do with the facilities when they reached the end of their operating lifetimes did not seem apparent. However, nearly five decades on, the international nuclear community is embroiled in the issue of how to decommission defunct nuclear facilities both effectively and safely.

This decommissioning problem has arisen now due to the fact that those nuclear facilities built in the pioneering stages of nuclear development have either come or will soon come to the end of their operating lifetimes. In accordance with national and international regulations and guidelines, these installations will have to be taken out of active use. Indeed, contemporary debate has been fuelled by statistics suggesting that in the next 20-30 years, over 400 nuclear facilities will require nuclear decommissioning in Western Europe and the United States alone.1 This time scale has indicated that tackling the problem of the decommissioning of nuclear facilities is overdue.

This paper seeks to examine the progress that has been made by the international nuclear community in terms of the decommissioning of nuclear sites and facilities. It will analyse the contribution that the international organisations have made and consider whether or not these contributions are adequate. The paper will also examine how certain leading individual nuclear nations have addressed the issue and how, if at all, they are furthering effective understanding of nuclear decommissioning regulation. For the purposes of this study, the United States and Germany have been chosen.

2 Decommissioning Issues

2.1 What is Decommissioning?

In many industries, once a facility has reached the end of its operating lifetime it must be taken out of active service. In the nuclear industry, this is especially important due to the presence of residual radioactivity.

The International Atomic Energy Agency (IAEA) defines decommissioning as

"the activities taken at the end of the useful life of a facility in retiring it from service with adequate regard for the health and safety of workers and members of the public." 2

2.2 Decommissioning Options

There are five basic options available to decommission nuclear facilities. These are -

    • Do nothing - leave the nuclear structures as they are, in perpetuity;
    • Prompt Dismantling - immediately dismantle the structures and return the nuclear facility and site to greenfield status;3
    • Postponed Dismantling - leave the nuclear structures as they are for a specified number of years with a view to eventually dismantling and returning the nuclear facility and site to greenfield status;
    • Permanent Entombment - seal the nuclear structures in thick concrete permanently to secure the radioactivity; and
    • Reversible Entombment - immediately remove uncontaminated structures, build a temporary structure around the reactor and cover the site with earth, with a view to possibly dismantling it in the future.4

In most cases, the eventual choice of which option to be deployed will be the result of rigorous consideration of environmental issues, technical feasibility and costs.

2.3 Environmental Considerations

It is thought by some that the ‘do nothing' approach to decommissioning is most favourable. They believe that the reactor is the safest place to house radioactive material.5

However, this approach infringes upon the desire to protect the environment. Leaving a nuclear facility in situ for an indefinite period of time will inherently contravene the environmental ‘concept' of sustainable development.6 Emerging as early as the 19th century, sustainable development has found contemporary acceptance and was defined in 1987 as

"development that meets the needs of the present without compromising the ability of the future generations to meet their own needs." 7

The concept addresses the inter-generational issue of rights and obligations to future generations. It recognises that future generations have interests and even rights which concern acts today. Indeed, inter-generational equity

"requires observance of three basic principles: conservation of options, conservation of quality, and conservation of access."8

However, this issue concerning rights and duties is disputed.9

Additionally, the ‘do nothing' approach fails to reflect the ‘polluter pays' principle.10 This principle proposes that the polluter should bear the expenses of any pollution that has occurred, and that the expense should be reflected in the costs of goods and services that have caused the pollution.11

The ‘do nothing' option could ultimately risk natural or man-made disasters and would contradict general norms, requiring disused industrial sites to be made fit for alternative use.12 This option is not normally regarded as an acceptable one.

Immediate dismantling on the other hand, is the only option of the five which does not produce inter-generational tension. It is clearly an option which favours the environment and is the active policy in Germany and Sweden. Under this option, the site quickly becomes available for other purposes, eliminating any need for long-term security, surveillance and maintenance. Furthermore, there is a greater degree of certainty as to the availability of low-level waste facilities willing to accept the radioactive waste at the time.13

Immediate dismantling does present some problems. These generally relate to the higher worker and public radioactive doses contracted and the larger initial requirement of money to fund the operation. Indeed, in most cases, the cost consideration will heavily influence the choice of decommissioning alternative.14

Similar environmental and ethical considerations which arise under the ‘do nothing approach also arise under the postponed dismantling approach. The postponement period varies from country to country. The US allows a 60 year period15 whereas the period is 130 years in the UK.16 The main technical argument advanced in favour of this option is that

"lengthy delays significantly reduce radioactivity over the time period." 17

Other advantages of this option include -

  • reductions in worker dose and public exposure;
  • reductions in the amounts of waste disposal space required; and
  • lower costs today due to the application of discount rates.

These overriding factors have made the option to delay very inviting indeed.

Nevertheless, postponed dismantling will require a continuing need for security, surveillance and maintenance. It will also prevent the nuclear site being available for alternative use during the postponement period, and create uncertainty as to the availability and costs of low-level waste sites in the future. Indeed, MacKerron points out that

"this argument about waste site requirements is a potentially serious one." 18

The final two options - permanent and reversible entombment - incorporate many of the advantages and disadvantages of the first three options. The entombing process effectively seals off any radioactivity from the environment for a substantial period of time. Permanent entombment does however, prevent future generations from ever opting to dismantle and decontaminate, and this presents a severe disadvantage especially if the structure is not permanently leak-proof.

The choice to dismantle is available under the reversible entombment option. This option is however precarious, especially as concerns finance. If no decommissioning funds are set up, future generations may well be at a severe disadvantage, having instead to self-finance the projects. This may provide strong disincentives to complete the projects, leaving the temporary entombed structure in an unstable state, and without even the qualities of the permanently entombed structure.

2.4 Technical Considerations

There is relatively little experience of nuclear facility decommissioning. This is the direct result of the fact that, to date, the majority of decommissioning projects have been concerned with research and small reactors. Yet, the prime focus of today's decommissioning programmes is on large commercial-sized nuclear reactors, thus requiring advanced technical knowledge. The industry is confident though that

"the absolute technical problems involved are relatively manageable - there is existing experience in the decontamination, demolition and waste packaging technologies that will predominate." 19

Regardless, the issue of dismantling nuclear components is receiving considerable interest. Existing cutting techniques are proving successful, but technology development especially in Japan20 and as part of the OECD/NEA Co-operative Programme on Decommissioning21 is proving invaluable.

Decontamination concerns are also receiving high priority. The objective is to reduce contamination levels to allow greater hands-on dismantling techniques and to reduce overall costs associated with waste production. Pioneering techniques being developed in France are aiding a solution by the use of dilute chemical decontamination processes.22

One final important technical issue that the international nuclear community must address is the lack of permanent repository facilities. Decommissioning inherently produces significant quantities of nuclear waste, and this implies that a decommissioning programme will have to effectively and safely deal with it. Understandably, this causes significant problems to those countries which lack considerable reprocessing and repository sites. This clearly introduces a greater environmental element into the equation. Indeed, recent demonstrations in Germany over reprocessing and repository facilities have caused major political and economical problems for the German nuclear industry.

2.5 Cost Considerations

The experience to date that the nuclear industry has gained provides little basis for estimating the costs of decommissioning of present day commercial reactors. Indeed, the issue of prospective costs of decommissioning is one which industry regards as highly important. The problem is exacerbated due to large discrepancies between the various decommissioning project costs world-wide.23 This high degree of uncertainty

"is an unavoidable feature of decommissioning - the only remedy is to have the highest possible level of confidence in the judgements made." 24

It is generally contended that previous cost estimates have been too low.25 Present estimates for the decommissioning of nuclear facilities are taking a number of additional considerations into account in an attempt to ensure that cost estimates are accurate and reliable.

The decommissioning alternative chosen is crucial to overall costs. Immediate decommissioning operations will yield higher amounts of radioactive waste and contamination, and will require greater amounts of initial capital. In contrast, entombment will dispense with many of these costs, but will require increased security, surveillance and maintenance costs.26 The choice of option is thus a delicate balancing act, but will be guided overall by what the relevant regulations permit.

Technical factors also influence costs. The choice of whether to carry out single-piece component dismantling or segmenting will have a big influence on dismantling costs. As mentioned above, the availability of repository and reprocessing facilities will also have an impact on overall costs.

The use of various accounting measures further complicates the decommissioning cost issue, and is one of the main reasons for inconsistencies between cost estimates. The lack of standard methods to discount future costs is causing considerable concern.

Finally, decommissioning funds must be assured. This varies from country to country, but generally the costs will either be provided by Government or by the licensee.27 These funds can be in the form of prepayment accounts, external sinking funds or in some cases, surety bonds.28

It is clear however, that cost considerations vary from project to project and thus

"the optimum decommissioning strategy needs to be identified on a case-by-case basis, focusing on site specific factors."29

Studies by the OECD/NEA are continuing with a view to standardising cost items and cost groups to provide a framework for cost estimates that will eventually introduce an element of certainty and reliability to cost issues.

3 The International Approach

3.1 Introduction

The various issues and concerns that arise under nuclear decommissioning present a need for international regulation. Yet, at international level, nuclear decommissioning is being addressed only to a limited extent. There is very little international law dealing with the issue, most of the developments being restricted to non-binding safety codes and ongoing research studies. The main actors in this field are the IAEA, the OECD/NEA and the EC, under Euratom.

3.2 The International Atomic Energy Agency (IAEA)

Set up in 1957 by the United Nations, the IAEA' purpose was to further the peaceful uses of nuclear energy throughout the world.30 Under Article III.A.6 of the IAEA Statute, the IAEA is charged to

"establish or adopt ...standards of safety for protection of health and minimization of danger to life and property."

For many years, the IAEA has done this by providing various safety standards relating to the construction, operation and, to a lesser extent, the decommissioning of nuclear facilities.31 However, such standards and codes are of a non-binding nature as concerns individual states. This was

"consequent on the view that nuclear safety is principally a matter for national concern."32

    3.2.1 The Convention on Nuclear Safety33

Following the Chernobyl disaster in 1986, the IAEA reacted quickly in order to strengthen international nuclear safety law. The 1994 Convention on Nuclear Safety does not explicitly deal with the issue of decommissioning. However, a closer analysis of its provisions does indicate requirements for the safe closing down of nuclear facilities. Under Article 2(I) of the Convention, a nuclear installation is defined. The provision also highlights safety in terms of decommissioning and indicates where safety obligations end;

"A plant ceases to be a nuclear installation when all nuclear fuel elements have been removed permanently from the reactor core and have been stored safely in accordance with approved procedures, and a decommissioning programme has been agreed by the regulatory body." 34

Clearly, once the fuel elements have been removed, the facility ceases to be a nuclear installation as defined under the Convention and would have undergone stage 1 decommissioning.35 Thus, only a small amount of the decommissioning process is covered by the Convention.

Article 6 further enhances the understanding of decommissioning and indeed introduces a decommissioning obligation.

"When necessary, the Contracting Party shall ensure that all reasonably practical improvements are made as a matter of urgency to upgrade the safety of the nuclear installation. If such upgrading cannot be achieved, plans should be implemented to shutdown the nuclear installation as soon as possible."

By virtue of these provisions, decommissioning is thus covered in terms of general nuclear safety but only to the point at which the fuel elements are removed. The resultant decommissioning obligation is however a step forward in the international regulation of nuclear decommissioning.

    3.2.2 The Joint Convention36

In 1996, an IAEA Group of Experts pointed out that once a decommissioning programme had been agreed to, the Convention on Nuclear Safety failed to apply.

There was therefore

"a need to cover such installations under the Joint Convention."37

The 1997 Joint Convention deals mainly with the issue of radioactive waste management. This however covers the issue of decommissioning ,as the process of closing down a nuclear facility produces a significant amount of radioactive waste.

Under the Joint Convention, decommissioning is defined as

"all steps leading to the release of a nuclear facility, other than a disposal facility from regulatory control. These steps include the process of decontamination and dismantling."38

By virtue of this provision, the subsequent articles relating to general safety requirements can be applied to decommissioning.39

Under Article 21 of the Joint Convention, responsibility for the safety of spent fuel or radioactive waste management rests with the license holder, or in the absence of one, the Contracting Party.

The Joint Convention has sought to ensure that adequate financial funds are available to cover potential decommissioning costs. Article 22(ii) and (iii) state that the

"Contracting Party is also responsible for ensuring that financial coverage is available during the operating lifetime of facilities and for decommissioning, as well as the period deemed necessary following the closure of a disposal facility."

If no such funds are available from the license holder, the Contracting Party to the Joint Convention will be liable.

    3.2.3 IAEA Safety Codes and Guides

The IAEA has further facilitated the progress of nuclear decommissioning by publishing a decommissioning safety guide to

"provide general guidance to Member States for regulating the decommissioning of nuclear facilities within the established nuclear regulatory framework." 40

The guide describes the process to be used and the considerations to be applied in the development of decommissioning regulations, while also setting out the responsibilities of both the regulatory body and the license holder.41

IAEA Safety Code

In 1988, the IAEA published a revised safety code relating to nuclear safety.42 Decommissioning is however treated in a short and superficial manner. Chapter 18 of the Code stipulates that the license holder shall provide measures for

"the decommissioning of the nuclear power plant in a safe manner and in accordance with a planned programme...[which] shall include all steps that can reasonably taken to ensure safety." 43

The Code does though highlight the considerations to be taken into account when choosing the decommissioning alternative.44

IAEA Code on Practice 45

In addition to Code on Safety, the Code on Practice deals with decommissioning. The objective of this Code was to provide broad guidance relating to safety matters as respects the management of radioactive wastes.

By virtue of sec. 10 of the Code, all actions taken after the termination of the useful life of the facility are governed by the general principles of safety contained in Sec. 2 of the Code. Specifically, Sec. 10.2.1. of the Code emphasises that authorisation to decommission should only be allowed if there are

"adequate facilities available for transport, storage and/or disposal of the ensuing wastes."

It is important to point out that both Codes only serve as guides and are non-binding in nature.

In conclusion, the IAEA has taken many significant steps in order to attempt to control the nuclear decommissioning practice. However, apart from the 1994 and 1997 Conventions, where decommissioning is treated superficially anyway, the IAEA has not produced any substantial instruments to regulate this important issue.

3.3 The OECD/NEA Co-operative Programme on Decommissioning 46

The Nuclear Energy Agency is the energy arm of the OECD and it was formed in 1957 to further research and development in the field of nuclear energy. Although not providing any regulations, standards or guides for decommissioning, the OECD/NEA addresses the issue by aiding the exchange of scientific and technical information of various decommissioning projects throughout the world. Other than the Technical Advisory Group set up under the programme, special Task Groups were set up to further decommissioning knowledge in specific problem areas. During the 1985-1995 period, special Task Groups were set up to consider

  • decommissioning costs;
  • decontamination required for decommissioning; and
  • recycling and reuse of materials arising from decommissioning.

The results of the programme have been fairly impressive. On the technical side, advances in cutting techniques resulting from the operation of the programme have been significant in terms of component dismantling. Indeed, in terms of environmental impact

"it has been demonstrated, that in some situations, the use of certain mechanical cutting techniques offers significant advantages in terms of volume of secondary waste produced."47

There have also been clear advantages in the use of robotics and autonomous machines.48

Financial data from the various projects provides a basis for comparison, from which better understanding of decommissioning costs can be gained. The Programme, by providing a sound tool for project cost management, has helped further the understanding of nuclear decommissioning and it is encouraging to see that several

"projects within the Co-operative Programme have remodelled their cost management structure on the proposed basis."49

Decontamination techniques are now the subject of an ongoing study. The objective of the study has been to produce techniques which substantially lower dose levels in components, so that derived wastes can be disposed of more economically. The continuing studies are being carried out in order that decontamination guidelines can be drawn up in the future.

Finally, the Task Group set up to study recycling and reuse, had the objective of maximising the recovery of valuable material from the decommissioning process and minimising overall decommissioning waste.50 The Task Group has extended its study but realises that a considerable impediment to its efforts is

"the absence of consistent, internationally accepted release criteria."51

However, most importantly, the Task Group has pointed out that

"This work provides some unique insight into the state of the recycling world from the nuclear decommissioning perspective."52

In conclusion, the OECD/NEA measures serve only to enhance decommissioning knowledge and not to regulate the process. The studies are however producing significant information that may form the foundations of guidelines in the future, although these would still be non-binding.

3.4 European Atomic Energy Community (EURATOM)

The Euratom Treaty was signed in 1957 with the purpose of creating a nuclear common market. Under the Treaty, member states are obliged to create and implement safety directives as well as ensure their enforcement.53

The clear advantage that Euratom has over its other international counterparts is that its decisions are binding. However, Euratom has done very little in terms of any contribution to the regulation of the nuclear industry. This has mainly been due to opposition by some member states. The differing status of nuclear energy within the EU's member states has meant that there is a wide and varied attitude toward the use of nuclear power and this has had a profound affect on the work of Euratom. Indeed, it may be fair to say that the

"Treaty is an anachronism in that it calls for the promotion of nuclear energy even though 14 out of 15 member states oppose or have stalled nuclear development."54

The work of Euratom has therefore been mainly restricted to research. In 1984, the Council of Euratom set up a five-year research programme to study the issue of nuclear decommissioning. The Programme studied

"the development of a system for handling decommissioned plants and for removing radioactive materials as well as the development of guiding principles for the and operation of facilities so as to simplify later decommissioning." 55

The results of the project furthered knowledge of dismantling, decontamination and waste handling, but their impact was overshadowed by the subsequent studies carried out by the OECD/NEA.

4 National Practice

4.1 Introduction

The absence of substantial regulations and guidance at international level has encouraged individual states to forge ahead and create a regulatory framework to deal with nuclear facility decommissioning in their own nations. Two of the most important regimes have been set up in the United States and in Germany. The US regime is significant as it houses the single largest number of nuclear facilities within its borders, 110 in all.56 In contrast, Germany has only 20 nuclear facilities in operation,57 but is the only country in Western Europe to adopt specific statutory regulation to deal with nuclear decommissioning.

4.2 The United States

The decommissioning of nuclear facilities in the US was brought sharply into focus in 1979, following a nuclear accident at Unit 2 of the Three Mile Island nuclear power plant. It took another nine years however, before the present decommissioning regulations were enacted, despite the fact that they were being promulgated as early as 1971.58 By virtue of these regulations, decommissioning of nuclear facilities is regulated under the auspices of the Nuclear Regulatory Commission (NRC).

Practical Experience

Since 1960, the US has decommissioned more than 70 test, demonstration and power reactors. The major projects have included the Shippingport and Fort St. Vrain nuclear facilities.59

Legal Aspects

On the 27th of June 1988, the US Congress issued the NRC's final decommissioning regulations after ten years of environmental, technical, policy and legal analysis on the subject.60 In 1996, a final rule amending the regulations was passed.61

Under the rule, 5 years prior to the end of operation of a nuclear facility, a ‘preliminary decommissioning plan' (PDP) must be submitted by the licensee containing a site specific cost estimate for the process and an up-to-date assessment of the major technical factors involved.62 Furthermore, applications for license termination must be submitted

"within two years following permanent cessation of operations, and in no case later than one year prior to expiration of the operating license." 63

Stage 1 of the decommissioning project is not realised until the licensee has proved to the NRC that all operations have permanently stopped and all spent fuel has been removed.64 Once this has been done, a post-shutdown decommissioning activities report (PSDAR) must be submitted along with the license termination application. The PSDAR must include

  • a description of the planned decommissioning alternative to be used;
  • a schedule for the accomplishment of significant milestones;
  • an estimate of expected costs; and
  • documentation proving that the environmental impacts associated with site-specific decommissioning activities has been considered.65

The NRC, on receipt of the application, places the plan in the Federal Register and makes it available for public comment. There is a 90 day period in which the NRC must review the report and decide whether or not to allow the licensee to continue with the decommissioning operations. Within this period, the licensee is not permitted to carry out major decommissioning activities.66 However, the licensee is allowed to carry out routine measures such as maintenance and disposal of small radioactive components.

On completion of stage 1 of the decommissioning process, the licensee will either continue on to stage 2 (removal of buildings/equipment but leaving core and shielding) or proceed directly to stage 3 (immediate dismantling and the returning of the facility to greenfield status.) Unless permission is given to the contrary by the NRC, the site must be decommissioned within 60 years.67

Finally, before the license termination will be granted, the licensee must submit a license termination plan. This must be done at least two years before the proposed termination date.68 If the NRC deems the license termination plan acceptable and the nuclear facility and site are suitable for release, it will complete the process by terminating the license.

Funding

NRC funding requirements relating to decommissioning, only apply to those parts of the nuclear facility that have been contaminated. Under 10 CFR 70.25 (a), decommissioning funds must be set up by the licensee. The licensee must review the fund annually in order to account for changes in labour, energy and low-level waste disposal costs, as well as to take into account technological advancements.69

Three types of funds are acceptable to the NRC; external sinking funds,70 prepayment accounts71 or surety bonds.72 In most cases, the external sinking fund is the preferred option.73

Present Situation

The regulations in the US are undergoing their sternest test, with some of the largest commercial reactors now waiting to be decommissioned. However, the regulatory foundations put in place in 1998 are proving to be more than adequate in guiding the decommissioning process. Indeed, the US is in a strong position to influence other nations in their handling of nuclear decommissioning regulation.

4.3 Germany

Introduction

As far as concerns the decommissioning of nuclear facilities, Germany has attained a unique position within Western Europe. It operates a system of statutory regulation, which explicitly addresses the issues and procedures for the decommissioning phase of a nuclear programme.

Practical Experience

In Germany, there is at present 20 nuclear reactors in operation. There has however been relatively little practical experience in the decommissioning of such facilities. This has been mainly due to the fact that the estimated operating lifetimes of the facilities is 40 years and the larger reactors were only initially put into operation in the early 1970's.74 However, decommissioning experience has been generated as a result of the decommissioning of two smaller reactors; one at Niederaichbach and the other at Gundremingen.75

Legal Aspects

The initial legislative enactment dealing with the operation of nuclear facilities did not envisage the resultant decommissioning problem. Indeed, the Atomic Energy Act (AEA) of 1959 dealt primarily with licensing and operational safety aspects.76 However, by virtue of the 4th Amendment to the AEA in 1976, the German legislature adopted provisions to deal with decommissioning license requirements and procedures.77 Section 7(3) of the AEA states that

"Decommissioning a facility....and the safe containment of a permanently decommissioned facility or dismantling of a facility or parts of a facility shall require licenses."

There has been considerable discussion as to the legal effect of the wording of this provision. It has centred around the issue of whether or not dismantling should or should not follow the process of self containment. Giving the provision a literal translation, it seems unlikely that the German legislature intended the provision to be read as a statutory decommissioning sequence. Clearly, the provision offers alternatives under which decommissioning licenses can be issued.

Licenses

Licenses under Section 7(3) of the AEA may only be granted if the prerequisite conditions are fulfilled. The conditions are transplanted from those which relate to the construction and operation of nuclear facilities in Germany.78 Separate licences are required for withdrawal from service, safe enclosure and dismantling.79

There is considerable discretion enjoyed by the Licensing Authority, with no legal right of the granting of a decommissioning license. This is probably the reason why no financial provision pertaining to decommissioning funds is included within the scope of the AEA. It seems apparent that if the License Authority has a degree of discretion and may impose supplementary conditions on decommissioning applicants, then it can quite easily, by virtue of this discretion, ensure that any decommissioning application is adequately funded.

Since 1977, prospective plant operators must take the issue of decommissioning into account in the initial design phase of the facility. Criterion 2.10 of the Safety Criteria for Nuclear Power Plants stipulates that a concept for dismantling the facility must be presented during the initial application for a construction and operating license.80 Such requirements are however not statutory in nature. By virtue of section 19(3) of the AEA

"Supervision of the nuclear facility's operations shall continue until the radiation from all facility structures and components fall below permitted levels."

Until this point, the competent authority may issue orders and directions relating to any aspect of the facility's operations, including decommissioning.

Waste Management

Under section 9(1) of the AEA, the decommissioning license holder is under a duty to recycle and dispose of the waster generated from the decommissioning process. Germany is fortunate enough to have at least some waste reprocessing and repositories facilities at its disposal to deal with such a situation.

Present Situation

Like the US, the German regulatory experience holds considerable potential to guide other nations in their quest for effective and adequate decommissioning legislation. However, their strength is now being put to the test. In 1998, Germany's political system saw a change on an unprecedented level as far as the nuclear industry was concerned. The new Social Democrat/Green Party coalition which won power has opted for a nuclear phase-out. This is having huge implications on the decommissioning of nuclear facilities.

There is no clear consensus however as to the timing of the phase-out. The German Chancellor Gehard Schroeder, largely favours

"a drawn-out process of decommissioning and is concerned about possible job losses and claims for damages against the government," 81

whereas, the Green's want to phase-out nuclear power as soon as possible. This problem is further being exacerbated by recent rumours suggesting the Government may put a surcharge on the price of electricity to help fund the decommissioning programme.82

The German decommissioning programme is clearly going to expand rapidly in the near future. One problem that may arise however, will be the lack of sufficient reprocessing and repository facilities. This will be as a direct result of present revision drafts to the atomic energy laws, which are proposing to end reprocessing activities.83 More informed discussion will have to take place in Germany if the German nuclear phase-out is to be achieved effectively and in line with the regulations.

5 Conclusion

There is clearly a need to regulate nuclear decommissioning on an international basis. Indeed, but for superficial and inadequate provisions in the 1994 Nuclear Safety Convention and the 1997 Joint Convention, the regulation of nuclear decommissioning has almost been ignored. Decommissioning deals with potential safety risks which are inherently transboundary in nature, and thus requires a transboundary solution. What is urgently required is, that the criteria used in the decision-making process be internationally agreed, with preferred options highlighted so that disposal considerations can be incorporated into the design of future installations.

What must be understood however, is that the regulation of nuclear decommissioning is an intricate issue which requires considerable understanding. There can be no single solution on how to decommission defunct nuclear facilities safely and adequately. Installations are relatively unique and they are designed and built in accordance with their own particular needs and circumstances. Thus, in order to ensure that a solution benefits society as a whole, nuclear sites and facilities must be considered on a case-by-case basis. This does not however, pre-empt the need for internationally recognised regulations and standards to guide the overall process.

Significant steps have already been made in the US and in Germany, and both systems can be of use in formulating international regulatory provisions. Strong licensing requirements for nuclear facility disposal in Germany are helping to ensure nuclear facilities are decommissioned safely. Coupled together with license authority discretion, the system is understanding and dealing effectively with site-specific needs. Similarly, in the US, funding requirements are being met by the operation of various accepted funding alternatives and they are helping the nuclear industry to adapt to contemporary problems. Such admirable attributes of both regimes should be transplanted into international law and applied, by the discretion of governments, at national level. This would help to create adequate and effective regulation that would be flexible enough to take into account the various decommissioning considerations and to respect individual needs.

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Endnotes

1 Kunth, Dr. B., Decommissioning of Nuclear Power Plants 1986 JENRL 107, at p.107.  Return to text
2 IAEA, The Regulatory Process for the Decommissioning of Nuclear Facilities, IAEA Safety Series, Vienna 1990, at p.1.  
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3 Greenfield status refers to the site being fully restored to its original, undamaged condition and ready for unrestricted use.  
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4 For further details of such processes, see Surrey, J., Ethics of Nuclear Decommissioning 1992 Energy Policy 632, at p.637-638.  
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5 Indeed, it is contended that structures built to house decommissioning wastes are unlikely to be as robust as a reactor and that dismantling reduces the security of the material. See Surrey, supra note 4, at p. 637.
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6 It is not clear yet to what extent sustainable development can be regarded as a international legal principle. See, Birnie, P. & Boyle, A., International Law and the Environment, at p. 122-124.  
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7 See The Bruntland Report, World Commission on Environment and Development, 1987 - Our Common Futures at p.43. This report was a prelude to the 1992 Rio Conference where sustainable development was given pride of place, see, United Nations Conference on Environment and Development, June 14th 1992, 1992 ILM 874. Furthermore, a recent decision of the International Court of Justice has put sustainable development firmly on the map, see, Separate Opinion of VP Weeremantry, in, the Case Concerning the Gabcikovo-Nagymaros Project (Hungary v. Slovakia), Judgement of 25th September 1997, 1998 ILM 162.
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8 Gundling, L., Our Responsibility To Future Generations, 1990 AJIL 207, at 209.  
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9 See D'amato, A., Agora: What obligation does our generation owe to the next? An approach to global environmental responsibility, 1990 AJIL 190-198.  
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10 The status of the polluter pays principle is also questionable, especially in relation to whether or not if there is sufficient support for its widespread use. For a discussion, see, Birnie, P. & Boyle, A., supra note 6, at p. 109-111.  
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11 See principles 2 and 4 of the OECD's Guiding Principles on the Environment, US Dept. Of State Release, No. 130, 1972, 11 ILM 1172.  
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12 See Surrey, supra note 4, at p.637.  
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13 NRC, Decommissioning Nuclear Power Plants,
www.nrc.gov/NRC/NUREGS/SR1628/part06.html#_1_8, at para. 2.6.  Return to text
14 As Surrey points out, immediate dismantling can increase decommissioning costs by 50% overall. See Surrey, J., UK Policy on Decommissioning ,1994 Energy Policy 723, at p. 723.  
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15 10 CFR 50.82 (a) (3)  
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16 See, White Paper on Review of Radioactive Waste Management - Final Conclusions, Cmnd 2919 1995, at p.32. 
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17 MacKerron, G., The Decommissioning of Nuclear Plant - Timing, cost and regulation, 1989 Energy Policy 103, at p.105.   Return to text
18 Ibid.  
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19 Ibid. at p. 104  
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20 Japanese Atomic Energy Research Institute Report, Development Programs on Decommissioning Technology for Reactors and Fuel Site Facilities in Japan, Paper presented to OECD/NEA Decommissioning Policy Conference, Paris, 2-4 October, 1991, at p. 77-87. 
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21 Infra Chapter 3.3, at p. 19.  
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22 See Douborg, M., The Spin-off of LWR Maintenance Techniques and Applicability to Reactor Decommissioning,, Paper presented to OECD/NEA Decommissioning Policy Conference, Paris, 2-4 October, 1991, at p. 124.  
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23 Gaunt, J. & Numark, N., Decommissioning of Nuclear Power Facilities, World Bank Report, April 1990, at p. 20.  
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24 MacDonald, N. & Page , B., Achieving Credibility in Decommissioning Cost Estimates, Paper presented to OECD/NEA Decommissioning Policy Conference, Paris, 2-4 October, 1991, at p. 193.  
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25 See Gaunt supra note 23, at p. 21.  
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26 See NRC Workshop, Questions on Decommissioning Nuclear Power Plants,
www.nrc.gov/NRC/NUREGS/SR1628/part06.html#_1_8 ,at para. 2.8.   Return to text
27 For example, in the UK, the Government has helped to pay the costs of the privatised nuclear industry by using funds collected by a fossil fuel levy.  
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28 For a description of these funding mechanisms, see Chapter 4.2 infra, at p. 26.  
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29 See Gaunt, supra note 23, at p. 22.  
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30 276 UNTS 4, at Article II.  
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31 See Chapter 3.2.3. infra at p. 17.  
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32 Szasz, P., International Atomic Energy Agency: Convention on Nuclear Safety 1994 ILM 1514, at p.1514.
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33 1994 ILM 1518.  
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34 Ibid. at Art. 2(I).  
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35 Overall, the IAEA has envisaged a three-stage process for the purposes of guiding nuclear decommissioning activities. After stage 1, the facility should have effectively ceased operations. After stage 2, the facility should be able to be left with a minimal amount of maintenance and surveillance, and the radioactive materials should be sealed up. A ‘greenfield site' is achieved on completion of stage 3.  
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36 The Joint Convention on the Safety of Spent Fuel Management and Safety of Radioactive Waste Management 1997 ILM 1435.  
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37 Tonhauser, W., and Jankowitsch, O., The Joint Convention on the Safety of Spent Fuel and the Safety of Radioactive Waste Management 1997 Nuclear Law Bulletin 9, at p.16.  
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38 Art. 2(b).  
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39 Arts. 4-17.  
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40 Supra note 2, at p. 2.  
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41 Of particular importance are the sections relating decommissioning planning, cost estimation, funding and regulatory process. Ibid. at Chapters 2-9.  
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42 IAEA Safety Series, No. 50-C-G(Rev.1), June 1988.  
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43 Ibid. at para . 1801-1802.  
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44 These are namely, potential radioactive exposure after shutdown, risk to personnel and public, future use of the site and the safety and surveillance considerations.  
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45 The Code on Practice relating to the Management of Radioactive Wastes from Nuclear Power Plants, IAEA Safety Series No. 69, February, 1984.  
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46 NEA/OECD, The NEA Co-operative Programme on Decommissioning – The First Ten Years 1985-1995, OECD, 1996.  
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47 Ibid. at p.8.  
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48 Ibid. at p.9.  
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49 Ibid. at p.10. Indeed, the OECD/NEA cost methodologies are now being used by the EC and the IAEA.
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50 This study is now the subject of a separate report, see, OECD/NEA, Nuclear Decommissioning – Recycling and Reuse of Scrap Metals, OECD, 1996.  
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51 Ibid. at p.138.  
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52 Supra, note 46, at p.10.  
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53 See Treaty Establishing the European Atomic Energy Community (Euratom) (Rome), 298 UNTS 167, (1957), at Arts. 33 & 38.  
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54 Lyons, P., EU energy policies of the mid-1990s, at p.95.  
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55 See Kunth, supra note 1, at p. 109.  
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56 See, IAEA - Nuclear Power Reactors in the World, April 1997 Edition, at p.9.  
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57 Ibid. at p.8.  
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58 Leonoff, L., Regulations Governing Nuclear Power Plant Decommissioning - A North American Perspective 1986 IBL 70, at 71.  
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59 Shippingport was a 72 MWe nuclear facility and was actively in service from 1957-1982. Decommissioning was completed in 1989. In 1989, the 330 MWe Fort St. Vrain nuclear facility was taken out of service due to poor performance, after 16 years in operation. By early 1996, decommissioning was complete, several months ahead of schedule and within its $189m budget.  
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60 53 FR 24018-24056.  
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61 61 FR 39301.  
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62 10 CFR 50.75 (f).  
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63 10 CFR 50.82 (a) (4) (i).  
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64 10 CFR 50.82 (a) (ii).  
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65 Supra, note 63.  
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66 Major decommissioning activities are described in 10 CFR 50.2 as ‘any activity that results in the permanent removal of major radioactive components, permanently modifies the structure of containment or results in dismantling components for shipment containing radioactive waste.'  
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67 10 CFR 50.82 (a) (iii). It is interesting to note that the original period was to be 30-50 years, but after considerable protesting by industry for a greater period, the figure was set at 60 years. See Leonoff supra note 58, at p.73.  
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68 10 CFR 50.82 (9) (i).  
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69 10 CFR 70.25 (e).  
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70 Sinking funds accumulate money over the facility's operating lifetime, and are collected from customer's rates and trust funds.  
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71 Prepayment accounts have money deposited before the facility goes into operation.  
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72 Surety bonds are guarantees as to the payment of decommissioning costs if the licensee defaults.
This option can also be in the form a letter of credit or insurance.  
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73 In 1992, the US Congress implemented two major changes to aid the nuclear industry in covering decommissioning costs. First, by 1994 federal tax on the funds was lowered from 34% to 22%, and by 1996, to 20%. Secondly, the nuclear industry was no longer restricted to low-earning tax exempt municipal bonds and federal government securities and was instead permitted to invest in higher earning investment areas.
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74 See Kunth supra note 1, at p. 110.  
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75 Niederaichbach was a 100 MWe pressure tube reactor which was decommissioned after only 18 days of operation. It only achieved a 40% yield of its rated power and was retracted from service due to being technically inadequate in the face of advancing technology. Gundremingen was a 250 MWe reactor which was partially decommissioned in the late 1970's. Once again, technical inadequacy forced the Gundremingen reactor out of service and full decommissioning will commence at the start of the new century. 
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76 Act on the Peaceful Utilisation and the Protection Against its Hazards (AEA) 1959,as amended, December 21 1992, BGBI I p.814.  
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77 BGBI I p.2573.  
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78 Supra note 76, at sec. 7(2) No.1-No.6. They require the applicant to ensure the reliability and responsibility of the appropriate personnel; the necessary knowledge of the personnel in relation to safe operation, safety measures and possible hazards; the necessary precautions in the light of state of the art to prevent damage arising from decommissioning; financial security to cover all legal liability; necessary protection from interference from 3rd parties; and compatibility with public interests and in particular to protect the environment.  
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79 See, European Commission Report - A review of the situation of decommissioning of nuclear installations in Europe, EUR 17622 EN, European Communities 1997.  
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80 Safety Criteria for Nuclear Power Plants, October 1977, Bundesanzeiger, No.206. Other relevant enactments include, the Model Rules for the Use of the State Collecting Facilities for the Radioactive Wastes in the FRG (1981) and the Decommissioning Guide (Draft, February 1995).  
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81 Studemanne, F., Warning on Decommissioning Talks: German energy sector nuclear issue exposes fundamental differences between coalition partners, Financial Times, Dec. 24 1998, at p.2.  
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82 Studemanne, F., Energy Bills Surcharge Mooted, Financial Times, Dec. 21 1998, at p.2.  
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83 Studemanne, F., Schroeder Discovers Nuclear Issue Still has Power to Divide, Financial Times, Dec.18 1998, at p.4.  
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