MODARIA II WG 4 : Working Group 4 Transfer processes and data for - - PowerPoint PPT Presentation

MODARIA II

WG 4 : Working Group 4 – Transfer processes and data for radiological impact assessment

• SG1: Terrestrial, freshwater and marine Kd
• SG2: Fukushima data
• SG3: Non-temperate systems

Progress and Status of Kd Sub group 1

• Prototype Kd database populated with soil, freshwater and marine data.
• Discussions held on what can be achieved within the timeframe of

MODARIA II (October 2019). Focus will be on:

• A detailed report on database structure
• Database populated with Cs data for soil, freshwater and marine Kd.
• Template for the extraction of Cs data from the database by users.
• Discussions with MODARIA II WG1 on end-user requirements for database.

Next Steps for Kd Sub group 1

• Further refinement of marine Kd data to reduce variability by taking

salinity into account.

• Inclusion of published Japanese Cs Kd data for freshwater and marine

environments.

• Review Cs soil dataset to look at other factors influencing Kd variability

e.g. EC, KExch.

• To develop draft outline of user interface for Cs for Kd database based
• n end-user requirements.

Subgroup 2 2 Fu Fukushima Par arameters

Progress this week : (1) Data update were made by attendees (highlighted) following agreed contents @ IM (2) Report deadline (Dec. 1 this year) followed by first consultancy meeting

Contents Writer International Collaborator Parameter (Introduction, Description)

• B. Howard plus others
• Marine
• H. Takata (MERI)
• M. Johansen, J. Jeong, W.

Men CR for Different fish species Algae, zooplankton, crustacean Marine

• H. Takata (MERI)
• M. Johansen

The time taken to reach the CR measured before the accident Marine

• M. Kusakabe, H. Takata

(MERI)

• M. Johansen

Dynamic Kd(a) Catchment

• Y. Onda (Tsukuba Univ.)
• J. Smith, L. Garcia-SanchezWash-off rates from different

management conditions, and Time dependency Freshwater

• Y. Onda (Tsukuba Univ.)
• P. Boyer, M. Vidal

Kd (a) for deposited sediment (surface area corrected) Freshwater

• S. Hayashi (NIES) &
• Y. Onda
• P. Boyer, M. Vidal

Kd(a) for suspended sediment

• Site dependent
• Event dependent

Freshwater

• S. Hayashi (NIES)
• N. Beresford

CR for fish (different fish species) Freshwater

• S. Hayashi
• N. Beresford

CR for other biota (algae, amphibian, …)

Ecosystem (or contents) Writer Potential International Collaborator Parameter Forest

• H. Kato, S. Hashimoto
• G. Shaw, Y. Thiry, G.

Proehl, Interception Forest

• S. Hashimoto
• G. Shaw, Y. Thiry, G.

Proehl, Effective half-lives in forest systems Forest

• N. Imamura, M. Komatsu,
• S. Ohashi, & S. Hashimoto
• G. Shaw, Y. Thiry, C.

Barnett Databases

• Soil concentration (Bq/m2)
• Transfer to tree organs
• Edible wild plants & Mushrooms

Forest

• K. Tagami
• B. Howard, N. Beresford, M.

Wood

• Game animals

Rice

• H. Tsukada
• B. Howard, Y. Choi

CR to rice Rice

• H. Tsukada
• B. Howard, Y. Choi

Paddy fields Inflow & outflow Agricultural product

• T. Shinano
• B. Howard

CR for Crops, Pasture, (exchangeable K in soil related) Agricultural product

• D. Takata, M. Sato, K.

Tagami

• B. Howard, F. Carini

CR for tree fruits Interception, translocation to fruits Agricultural product

• N. Yamaguchi
• Y. Thiry

RIP Farm animal

• K. Tagami
• B. Howard

Fm, Ff and CR Food processing K. Tagami

• G. Proehl

Fr

Thursday pm: Further discussion on structure of Tecdoc (contents) and on forests

TF available for some countries in arid regions

Cs134 Cs137 Sr90 K40 Ra226 U234 U238 Po210 Pb210 Th232

Olives Orange Lettuce Winter wheat grains Alfalfa Palm dates Onion Beans Potatos Tomato Cucumber Pepper Capsicum Organic pepper Chili pepper Eggplant Zucchiniss Grape Barley Lentil Chickpea Palm date pits Apricot

TF

Progress and Status of Kd Sub group 3

Initial comparison example

Sr Cs

8

Initial experimental work in Kuwait Three types of leafy vegetables: Roca, lettuce, parsley Transfer of Cs134 and Sr85 soil to plant Cucumber, tomato and paprika

Column experiments

Humid tropical soil-to-plant TF data

• Recently started
• Old Data issues:
• Previous Tropical TF CRP data not published even though included in TRS 472.

Will be published as an annex to MODARIA II report.

• Accessibility to all previous Tropical TF used in TRS 472 needed.
• A.I. has helped make the old TF data available.
• Old data needs filtering to include/exclude info based on newly adopted

KG class A

• In: Australia, Brazil, Bangladesh, Thailand, Vietnam, Marshall Islands
• ? India
• Elsewhere: Japan, Taiwan, Korea, Greece, Turkey, Syria
• QC needed to ensure that data from each country only refer to KG class A

• New data
• Template circulated and 1 formatted set has been returned (India) another

has been promised (North Australian native fruits)

• Prelim. literature search 2009-Present identified 14 useful papers plus original
• 4. Data need to be checked and transcribed into template.

Crops Regions Elements Medicinal plants Southern India, Thailand Pb, Po, Ra, Th, K, Cs Vegetables, fruit, tapioca Malaysia Ra, Th, K Sugar cane, sugar Brazil Ra, Th, K Rice India, Malaysia, Nigeria Ra-226, -228, Pb, Th, K, Cs Tobacco India Rn, stable metals Tomatoes, Okra Nigeria Ra, Th, K Grains, seeds, trees Parana, Brazil Po, U-234, -238 Mangroves, Typha Thailand Ra, Th, K, HM Root vegetables Malaysia Ra, Th, K, Y Lemons Goiania, Brazil K, Cs

Interim meetings

• Vienna late spring ?
• Kd and Fukushima data
• Morocco end May ?
• Non-temperate group