Regular reporting session on R&D progress was held on June 2015

On June 29, 2015, NUMO held a regular reporting session on R&D progress at Mita NN hall (Tamachi, Tokyo) with about 140 participants. NUMO is preparing to publish a generic safety case tentatively named “Feasibility of Safe Geological Disposal in Japan” for the purpose of further progress of geological disposal with higher technical reliability. The concept of the safety case development, the results of the relevant studies and the future plan were explained in the session. Many opinions and suggestions were provided by the participants. The programme is shown below.

Regular reporting session on R&D progress was held on June 2015

Programme:

13:30-13:35 Opening remarks

Shunsuke Kondo (President)

13:35-15:30

Topic:

Current status of a generic safety case, "Feasibility of Safe Geological Disposal in Japan"

(1) Background and objectives of "Feasibility of Safe Geological Disposal in Japan"

Hiroshi Fujihara

(2) Understanding of suitable geological environment for geological disposal and its modelling

Kimitaka Yoshimura

(3) Repository design and technologies for construction/operation/closure

1) Repository design considering geological environment in Japan

2) Technical development for construction/operation/closure technologies

(4) Safety assessment of a repository

1) Pre-closure safety of a repository

Shigeru Kubota

15:30-15:50 Break

15:50-16:55

(4) Safety assessment of a repository

2) Long-term post-closure safety of a repository

Manabu Inagaki

(5) The way forward

Akira Deguchi

16:55-17:00

Concluding remarks

Hiroyuki Umeki (Executive Director)

∗ Safety case:

The safety case is the collection of scientific, technical, administrative and managerial arguments and evidence in support of the safety of a disposal facility, covering the suitability of the site and the design, construction and operation of the facility, the assessment of radiation risks and assurance of the adequacy and quality of all of the safety related work associated with the disposal facility.
(Source: IAEA (2012): The Safety Case and Safety Assessment for the Disposal of Radioactive Waste, Specific Safety Guide, IAEA Safety Standards Series No. SSG-23)