FNCA 2021 Study Panel, March 3-4, 2021

AMS Analyses of I-129 in Arctic Ocean--National Perspective from China
YU W EN ( yuw en t io @ q q . c o m ) , M E N W U
THIRD INSTITUTE OF OCEANOGRAPHYMINISTRY OF NATURAL RESOURCES, CHINA

Climate Change Longer-term and profoundchallenge for mankind
 No country can be immune to it2

“Tackling climate change is the inherent
need for China's sustainable development
and the responsibility to promote thebuilding of a community with a shared
future for humans.”-- by General Secretary Xi Jinping3

National Policies / Actions

Industrial & energy
structure adjustments

Energy efficiency
improvements

Advocating a low‐
carbon lifestyleMarket mechanism
construction

Increasing forest
carbon sinks
4National Commitments
 Climate action target proposed in 2009:• By 2020, carbon emissions will be
reduced by 40%-45% compared to 2005

48%

CO2emissions perunit of GDP• Completed ahead of schedule New commitment made in 2020:• To achieve the peak of carbon emissions
by 2030• To achieve carbon neutrality by 2060

China'sGDP400%5

Environmental Radioactivity Monitoring
Implementation System in China
Supervision support
Technical support

Center for Nuclear and Radiation Safety
Technical guidance

Ministry of Ecology
and Environment

Six Regional Nuclear and Radiation Safety
Supervision Stations

Technical support

Departments of Ecology
and Environment inProvinces/
Municipalities
Bureaus of Ecology andEnvironment inPrefectures & cities

Radiation Environment Monitoring
Technology Center
Supervising
Implementing
monitoring

Radiation environment monitoring agency
in 31 Provinces/ Municipalities
Technical guidance

Implementing
monitoring

Radiation environment monitoring agencies
in the jurisdiction
6National Environmental Radioactivity Monitoring

Continuous
monitoring ofair absorbeddose rate

Cumulative
doseWater

Aerosol
Deposits
Precipitation

Soil

Terrestrial

AirRivers
Lakes / reservoirs

Drinking
water sources

Underground water

Water vapor
Gaseous Iodine

Marine

Dose rates

SeawaterMarine biota

7Data releaseReal-time monitoring data release system(http://data.rmtc.org.cn:8080/gis/PubIndex.html#)

Annual Reports of the National
Radiation Environment8Collaboration with IAEA

IAEA/RCA Regional Training Course 2013 onRadioanalysis of environmental samples

IAEA/RCA Regional Training Course 2019 and technicalvisit to Radiation Monitoring Technology Center

9

AMS systems in ChinaNo. InstituteCity
Type
1
China Institute of Atomic Energy
Beijing2 x 13 MV
2China Institute of Atomic Energy
Beijing
150 kV
3
China Institute of Atomic Energy
Beijing2 x 350 kV
4China Institute of Atomic Energy
Beijing2 x 350 kV
5China Institute for Radiation Protection
Taiyuan2 x 300 kV
6Peking University
Beijing
2 x 6 MV
7
Peking University
Beijing
2 x 0.5 MV
8Beijing Normal University
Beijing2 x 1 MV
9Institute of Earth Environment, CASXian
2 x 3 MV
10 Institute of Earth Environment, CAS
Xian
2 x 200 kV
11 Institute of Grochemistry, CASGuangzhou
2 x 0.5 MV
12 Institute of Hydrogeology and Environmental Geology, CGS
Shijiazhuang
2 x 1 MV
13 Tianjin UniversityTianjin
2 x 0.5 MV
14 Guangxi UniversityNanning
150 kV
15 Nanjing UniversityNanjing
2 x 200 kV
16 Lanzhou University
Lanzhou2 x 200 kV
17 Qingdao
Qingdao2 x 200 kV
18 Qingdao
Qingdao
2. 0.5 MV
19 Institute of Geochemistry, CASGuiyang
2 x 1MV
20 Henan University
Kaifeng2 x 200 KV
Another 5 AMS systems are under construction: China Academy of Engineering Physics, 404 Factory (CNNC)，SINOPEC Institute, Sun Yat‐sen University, Henan
Provincial Institute of Cultural Heritage and Archaeology
10Sampling and Analyzing
CHINARE Arctic-8 Cruise
Jul – Oct 201752 stations, 0-3800 m depth
1 MV Tandem AMS in CNS, Seville Univ., Spain11

I-129 Distribution

12

129I (at/kg)

129I (at/kg)
5.00E+09

1.00E+05
0

1.00E+10500

200

1000

400

1500

1.00E+09

2.00E+09

600

Depth (m)Depth (m)1.00E+05
0AT04
2000

AT05
BB03

2500

P1800

P4P91000

BB07 BB08

3000

R1R11

1200

3500

R4R6

1400

R8

129I (at/kg)
1.00E+05
0

5.00E+09

1.00E+101600

129I (at/kg)

500

1.00E+0501000

200

A3A4

Depth (m)Depth (m)

600

A1A2

2500

1.00E+08400

1500
2000

5.01E+07800

B08
B101000

B15

3000

B17

1200
3500
4000

BS02BS05

1400
1600

13

I-129/Cs-137 Distribution14

15