atw 2018-05v6

inforum

atw Vol. 63 (2018) | Issue 5 ı May

DECOMMISSIONING AND WASTE MANAGEMENT 318

| | Fig. 4.

Modules of the Bethoven calculation tool.

| | Fig. 5.

Logo of the calculation tool “Bethoven”.

provided with instructions, in which

the required evidence for the repository

documentation are described.

The acronym for the calculation

tool for holistic waste management is

Bethoven according to Figure 5.

4 Validation and discussion

Extrapolations have been realized

according to the optimisation parameters

repository volume, container

costs, loading time and volume utilization

of the last container.

The validation of the calculation

tool was based on existing final

storage containers with complete and

certified final disposal documentation

and certified suitable for disposal, e. g.

[4] and [5] as well as on raw waste

data from national disposal program

(NaPro) [6].

The validation of the calculation

tool has been successful and the

extrapolations give meaningful results

that illustrate the potential of optimising

packaging planning.

The input data can be taken from

the planning of dismantling and

material analysis as single data

or from software like waste flow

tracking and product control system

(AVK) or the residue-tracking control

program (ReVK). The data of a loaded

final storage container can also be

the data input for Bethoven to create

the waste data sheet. In the mentioned

order, the number of data is

decreasing.

Bethoven also can be used to estimate

number and type of necessary

containers to pack a certain amount of

waste according to an optimisation

parameter. Another function of the

calculation tool is to give a statement

about the general packability of waste

according to the Konrad disposal

conditions and handling possibilities

at the site. For detail planning and

optimisation the Bethoven calculation

tool can give specifications like costs

and exposure time for the executive

staff. As highest level of detail, the tool

is able to check the packability of

waste with respect to a particular

container. For that the calculation tool

gives a list including the parameters

for the package variant according

to the Konrad disposal conditions

and a waste data sheet. An overview

about these classifications is given in

Figure 6.

The validation of Bethoven demonstrates

the range of possibilities

for optimisation of packaging by using

a calculation tool for packaging

planning. For individual waste packages,

the calculation tool is able to

generate a detailed waste data sheet.

For locations with small amounts of

radioactive waste, optimising the

volume utilization of the last container

is expedient and for large

amounts of waste. Bethoven can be

used to optimise the packaging

according to disposal volume, loading

time or container costs.

5 Summary and outlook

Optimisation of packing radioactive

waste is necessary with regard to the

volume limit of the repository and the

exposure times for the executive staff.

For the development of the calculation

tool, the planning of waste

management for radioactive waste

| | Fig. 6.

Input and output for raw, product and container data.

Decommissioning and Waste Management

Optimal Holistic Disposal Planning – Development of a Calculation Tool – ı Johannes Schubert, Anton Philipp Anthofer and Max Schreier

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