JOPSS - Search Results

Geochemical as well as socio-economic issues associated with the selection of potential sites to host a high-level nuclear waste repository have received considerable attention in repository programs in Europe (Belgium, Finland, France, Germany, Spain, Sweden, Switzerland and the U.K.) and North America (Canada and the United States), The objective of the present study is to summarize this international experience with particular emphasis on geochemical properties that factor into the adopted site-selection strategies. Results indicate that the geochemical properties of a site play a subordinate role, at best, to other geotechnical properties in the international site-selection approaches. In countries where geochemical properties are acknowledged in the site-selection approach, requirements are stated qualitatively and tend to focus on associated impacts on the stability of the engineered barrier system and on radionuclide transport. Site geochemical properties that are likely to control the lomg-term stability of geochemical conditions and radionuclide migration behavior are unspecified, however. This non-prescriptive approach may be reasonable for purposes of screeing among potential sites, but a better understanding of site properties that are most important in controlling the long-term geochemical evolution of the site over a range of possible scenarios would enable the potential sites to be ranked in terms of their suitability to host a repository.

JAEA Reports

None

Arii, Yoshio

JNC TN9200 99-009, 432 Pages, 1999/07

JNC-TN9200-99-009.pdf:17.27MB

None

JAEA Reports

None

PNC TN1410 98-009, 400 Pages, 1998/05

PNC-TN1410-98-009.pdf:13.87MB

no abstracts in English

JAEA Reports

None

Nemoto, K.*; *; Higuchi, Takanao*; Endo, H.*; Ono, Takahiro*; *; *

PNC TJ1250 98-002, 321 Pages, 1998/02

PNC-TJ1250-98-002.pdf:25.88MB

None

JAEA Reports

None

PNC TN1420 95-023, 20 Pages, 1995/12

PNC-TN1420-95-023.pdf:1.58MB

no abstracts in English

JAEA Reports

A Study of direct disposal technology in the world (2)

*; Okubo, Hiroo*

PNC TJ9222 95-002, 111 Pages, 1995/03

PNC-TJ9222-95-002.pdf:3.33MB

There are two methods of handling the spent fuel generated from the light water reactor; they are (l)direct disposal and (2)reprocessing-plutonium recycling. At present, Japan is following the line of "Reprocessing-Plutonium Recycling," but in the rest of the world, the movement for reviewing the Plutonium recycling is spreading, and in the future, the world opinion and pressure from overseas countries will increase against this method. Under these circumstances, Japan must compare the two methods to clarify the meaning of plutonium recycling. In this investigation, an overseas document by which the spent fuel had directly examined disposal was investigated. And, the content of those documents was arranged. The case of which directly disposed in Japan was set and the basic specification and the cost were evaluated. As a result of the investigation, the disposal cost became 54,900,000 yen/tU in the case with our country. This evaluation value is about 25% higher than Sweden and Finland where the cost is the highest in an overseas case. In cost items, the ratio which the article expense occupies is high. Moreover, the cost of construction and the close of underground facilities occupies the entire half for our country. This investigation is an evaluation based on in the case of the evaluation the current. Therefore, I want you to note going as for a technical detailed examination. However, the guess of the cost when directly disposing in Japan pounded. Moreover, the nuclear material control of the spent fuel is not evaluated. I want you to note cannot the comparison for that with the disposal of the glass solidification body.

Journal Articles

Heavy Ion Research Institute, Germany

Tamada, Masao

Isotope News, (484), p.18 - 21, 1994/10

no abstracts in English

JAEA Reports

None

Ashida, Takashi

PNC TN8600 94-003, 150 Pages, 1994/08

PNC-TN8600-94-003.pdf:13.42MB

no abstracts in English

JAEA Reports

A Study of direct disposal technology in the world

*; Okubo, Hiroo*

PNC TJ9222 94-003, 120 Pages, 1994/06

PNC-TJ9222-94-003.pdf:4.31MB

There are two methods of handling the spent fuel generated from the light water reactor; they are (1)direct disposal and (2)reprocessing-plutonium recycling. At present, Japan is following the line of "Reprocessing-Plutonium Recycling," but in the rest of the world, the movement for reviewing the plutonium recycling is spreading, and in the future, the world opinion and pressure from overseas countries will increase against this method. Under these circumstances, Japan must compare the two methods to clarify the meaning of plutonium recycling. For this reason, the present investigation first studied the concept and trend of spent fucl disposal in overseas countries to find out what factors were regarded as important in the spent fuel policies of various countries. Further, in the present investigation, comparative evaluations were made on the results of examinations in various countries regarding "direct disposal." Examinations have also been made as to whether there is a significant merit or demerit in direct disposal and plutonium recycling, and whether it is possible to generally apply the direct disposal method adopted in overseas countries to Japan. The investigation has revealed that there are factors such as techniques, energy, resources, economy, environment, institutions, safety, etc., which influence the spent fuel disposal policy. The five countries including the United States and Sweden, which have clearly taken up the direct disposal policy have so by laying importance on different factors according to the situations of the respective countries. Further, the comparative evaluation concerning the economy, safety, etc. has shown small difference between direct disposal and plutonium recycling and neither has any significant merit or demerit. Further, regarding the disposal concept, there are great differences according to the actual states of various countries; hence it is considered that Japan should carry out comparative evaluation of direct ...

JAEA Reports