August 5, 2024
Okuma Analysis and Research Center
Fukushima Research and Engineering InstituteJapan Atomic Energy Agency

Analysis Results of ALPS Treated Water(Sampling at June 21, 2024, 10:40 JST)
Analysis was performed on the ALPS treated water in K4-C tank group in measurement andconfirmation facility sampled at June 21, 2024, 10:40 JST.
The analysis results of 3H and other nuclides are as follows:・The confirmation of nuclides other than 3H which have been purified to below the regulatory limit
by ALPS treatment:
The sum of ratios to the regulatory concentration limits of nuclides other than 3H (30 nuclides*1)
was 0.12 (less than 1), confirming that regulatory standard is satisfied.
The nuclides that confirmed not to be significantly present in ALPS treated water (38 nuclides*2):
All target radionuclides were confirmed not to be significantly present.

・The confirmation of 3H concentration in ALPS treated water:3

H concentration was 2.0E+05 Bq/L*3.

The analyzed 68 radionuclides other than 3H are shown in Fig.1

Fig.1 Classification of radionuclides other than 3H*1: The nuclides that are selected by TEPCO HD based on the flow defined in the implementation
plan and should be confirmed to satisfy the discharge standard (below regulatory standards).
*2: From the viewpoint of preventing the adverse impacts on reputation, the nuclides which
independently confirmed by TEPCO HD not to significantly present in ALPS treated water.
*3: Dilute more than 100 times so that the 3H concentration after seawater dilution is less thanthe maximum tritium concentration, 1,500 Bq/L/

1

The confirmation of nuclides other than 3H which have been purified to below the regulatory

1.

limit by ALPS treatment
Analysis results for the sum of ratios to the regulatory concentration limits of nuclides other than3

H (30 nuclides) that are confirmed to be less than regulatory limit (sum total of 1) are shown in

Table 1. As the result of analysis, the sum of ratios to the regulatory concentration limits of nuclides
other than 3H was 1.2E-01 (less than 1), confirming that regulatory standard is satisfied.
Table 1 Analysis results of nuclides other than 3H in ALPS treated water(The nuclides which confirmed to be less than regulatory limit)(Sampled at June 21, 2024, 10:40 JST)

Ratios to

NuclideConcentrations

Expanded

Detection

Regulatory

Uncertainty※1

Limit

Concentration
Limit[Bq/L]
14

Regulatory
Concentration Limit※2

Measurement/
Evaluation
method※3[Bq/L][Bq/L][-][Bq/L]

3.1E+00

6.0E-01

6.5E-03

2,000

Measurement

C

1.3E+01Mn

ND-

1.1E-02

1.1E-05

1,000

Measurement

55

Fe

ND

-

5.5E-01

2.8E-04

2,000

Measurement

Co

4.0E-01

5.2E-02

9.7E-032.0E-03200

Measurement

54

60

±

±

63

Ni

ND

-

1.2E+01

2.0E-03

6,000

Measurement

79

Se

ND

-

2.0E+00

1.0E-02200

Measurement

2.3E-01

8.3E-02

4.3E-0230

Measurement

90

Sr

1.3E+00±

Radiative
90Y

1.3E+00-

8.3E-02

4.3E-03300

equilibrium
evaluation

99

Tc

106

1.5E-01

1.0E-01

5.6E-04

1,000

Measurement

ND-

1.0E-01

1.0E-03100

Measurement

Cd

ND

-

1.3E-01

3.3E-0340

MeasurementSb

2.2E-01

4.2E-02

4.4E-02

2.8E-04800

Measurement

Ru

113m
125

5.6E-01±±

Radiative
125m

Te

5.5E-02-

1.1E-02

6.1E-05900

equilibrium
evaluation

129I

3.3E-01

134

Cs

ND

137

Cs

2.0E-01

Ce

Pm

144

147

1.0E-01

1.3E-01

3.7E-02

9

Measurement-

4.1E-02

6.8E-0460

Measurement

2.7E-02

1.2E-02

2.2E-0390

Measurement

ND-

1.4E-01

7.0E-04200

Measurement

ND-

1.5E-01

5.0E-05

3,000

±

±

2

Relative ratio
evaluation

151

Sm

ND

-

9.2E-03

1.2E-06

8,000

Relative ratio
evaluation

154

Eu

ND

-

4.1E-02

1.0E-04400

Measurement

155

Eu

ND

-

6.9E-02

2.3E-05

3,000

Measurement

234

238

237

U
U

20

ND

-

1.3E-02

3.3E-03※4

Np

20

9

Measurement, Total
α (U, Np group)
Measurement, Total
α (U, Np group)
Measurement, Total
α (U, Np group)

Measurement,
238

Pu

4

Total α (Pu, Am,
Cm group)

Measurement,
239

Pu

4

Total α (Pu, Am,
Cm group))

Measurement,
240

Pu

ND

-

8.3E-03※4

2.1E-03

4

Total α (Pu, Am,
Cm group)

Measurement,
241

Am

5

Total α (Pu, Am,
Cm group)

Measurement,
244

Cm

7

Total α (Pu, Am,
Cm group)

241

Pu

ND

-

2.5E-01

1.3E-03

Sums of the Ratios to Regulatory Concentration Limits

1.2E-01

200

Relative ratio
evaluation

less than 1±○・○.○E±○ means ○.○×10

・

The results are shown in two significant digits.

・Due to rounding of values, the sums may not exactly match with the actual value.

・

ND (Not Detected) in the table indicates that the value is below the detection limit.

・The reference value for the decay correction is the date and time of sampling.

※1: The uncertainty is the degree of variation in analytical value. Uncertainty is determined by combined all thevariations of each step of the analytical procedure from sample collection to measurement. Here, the expanded
uncertainty (U = 2 x u) is attached to the analyzed value by doubling the combined standard uncertainty (u).
※2: Legally required activity concentration limit established in the Ordinance for Operational Safety and Protectionof Specified Nuclear Fuel Materials of the Nuclear Reactors at TEPCO’s Fukushima Daiichi (Appendix of firstand sixth column: The concentration limit in water outside the peripheral surveillance zone [In this table, Bq/cm33

was converted to Bq/L]).
※3: Details of the measurement and evaluation methodology are described below.
Measurement: The radiation of samples is measured then the results are converted into the concentrations of eachnuclide.
Total α (U, Np group): U and Np derived α rays of the samples were measured and the results are converted tototal α concentration.
Total α (Pu, Am, Cm group): Pu, Am, Cm derived α rays of the samples were measured and the results areconverted to total α concentration.
Radiative equilibrium evaluations: The state in which the ratio of the number of atoms of the parent nuclide tothat of its progeny nuclides in a decay series is nearly constant is calledradiative equilibrium. The concentration of each nuclide was evaluated basedon this radiative equilibrium relationship and the measurement results of theparent (or progeny) nuclide.
Relative ratio evaluation: The ratio of each nuclide present in the reactor is evaluated by taking into account thegeneration, decay, impairment loss, etc. of the nuclides. The concentration of eachnuclide is calculated by multiplying the measurement results of the reference nuclide
by its existence ratio.

※4: The ratio to the regulatory concentration limits of α nuclides (U-234, U-238, Np-237, Pu-238, Pu-239, Pu-240,
Am-241, and Cm-244) was calculated by dividing the total alpha value by the lowest required activity
concentration limit (4 Bq/L) of the selected alpha nuclides.

4Analysis results of 3H in ALPS treated water2.

Analysis results for the 3H concentration in ALPS treated water are shown in Table 2. As the resultof analysis, 3H concentration was confirmed to be 2.0E+05 Bq/L.
Table 2 Analysis results of 3H in ALPS treated water (sampled at June 21, 2024 10:40 JST)
Nuclide3

Activity

Expanded

Detection

Regulatory

Regulatory

Measurement/

Concentrations

Uncertainty※1

Limit

Concentration

Limit※2

Evaluation[Bq/L][Bq/L][Bq/L]

Ratio[Bq/L]

method※3

2.0E+05±2.1E+04

7.8E+01

3.3E+00

60,000Measurement

H・○.○E±○ means ○.○×10±○

・

The results are shown in two significant digits.

・The reference value for the decay correction is the date and time of sampling.

※1: The uncertainty is the degree of variation in analytical value. Uncertainty is determined by combined all thevariations of each step of the analytical procedure from sample collection to measurement. Here, the expanded
uncertainty (U = 2 x u) is attached to the analyzed value by doubling the combined standard uncertainty (u).
※2: Legally required activity concentration limit established in the Ordinance for Operational Safety and Protectionof Specified Nuclear Fuel Materials of the Nuclear Reactors at TEPCO’s Fukushima Daiichi (Appendix of firstand sixth column: The concentration limit in water outside the peripheral surveillance zone [In this table, Bq/cm3
was converted to Bq/L]).
※3: Measurement: The radiation of samples is measured then the results are converted into the concentrations of eachnuclide.

5

3.

Nuclides other than 3H to be confirmed as not significantly present in ALPS treated water
Analysis results for the target nuclides (38 nuclides) other than 3H that were confirmed to be as not

significantly present in ALPS treated water are shown in Table 3. As the result of analysis, all target
radionuclides were confirmed not to be significantly present. Furthermore, the sum of the ratios to theregulatory concentration limits for the 68 nuclides in Tables 1 and 3 is also less than 1.
Table 3 Analysis results of nuclides other than 3H in ALPS treated water(Nuclides which confirmed not to be significantly present) (sampling time: June 21, 2024 10:40 JST)
Activity
NuclideConcentrations

Regulatory
Concentration

Regulatory
Limit※1

Ratio

Evaluation※2

Measurement/
Evaluation method※3[Bq/L][-][Bq/L]

Fe

1.9E-02

4.8E-05400〇

MeasurementCo

1.1E-02

1.1E-05

1,000〇

MeasurementZn

1.9E-02

9.5E-05200〇

MeasurementRb

1.5E-01

5.0E-04300〇

Measurement

1.0E-01

3.3E-04300〇

MeasurementY

3.8E+00

1.3E-02300〇

MeasurementNb

1.4E-02

1.4E-05

1,000〇

Measurement

1.5E-02

1.5E-05

1,000〇

MeasurementRh

1.5E-02

7.5E-08

200,000〇Rh

1.0E-01

3.3E-07300,000〇

1.2E-02

4.0E-05300〇

Measurement

6.0E-01

2.0E-03300〇

MeasurementSn

1.3E-02

6.5E-06

2,000〇

Relative ratio evaluation

123

Sn

1.7E+00

4.3E-03400〇

Measurement

126

Sn

4.0E-01

2.0E-03200〇

Measurement

124

Sb

2.0E-02

6.7E-05300〇

MeasurementTe

2.1E-02

3.5E-05600〇

Measurement

Te

1.4E+00

2.8E-04

5,000〇

Measurement

Te

1.4E+00

4.7E-03

300〇

Relative ratio evaluationTe

2.0E-01

2.0E-05

10,000〇MeasurementTe

3.6E-01

1.2E-03300〇

Measurement

135

Cs

8.4E-08

2.3E-09

600〇

Relative ratio evaluation

136

Cs

1.3E-02

4.3E-05300〇

Measurement

1.2E-02

2.4E-07800,000

〇

59
58

65
86

89

Sr

91
95

103

Ru

103m

106

110m

Ag

115m

Cd

119m

123m
127

127m
129

129m

137m

Ba

6

Radiative equilibrium
evaluation
Radiative equilibrium
evaluation

Radiative equilibrium
evaluation

140

Ba

6.1E-022.0E-04300〇

Measurement

141

Ce

6.3E-02

6.3E-05

1,000〇

Measurement

1.4E-01

7.0E-06

20,000〇Pr

1.3E-03

3.3E-08

40,000〇146Pm

1.9E-02

2.1E-05900〇

Measurement

148

Pm

7.9E-02

2.6E-04300〇

MeasurementPm

1.2E-02

2.4E-05500〇

MeasurementEu

5.8E-02

9.7E-05600〇

Measurement

Gd7.0E-02

2.3E-05

3,000〇

Measurement

3.3E-02

6.6E-05500〇

Measurement

4.3E-05

8.6E-06

5〇

Relative ratio evaluation

5

〇

60

〇

6

〇

144

Pr

144m

148m
152
153

160

Tb

242m

243

Am

Am

242

243

Cm

2.1E-03※4

8.3E-03

Cm

・○.○E±○ means ○.○×10±○

・

The results are shown in two significant digits.

・Due to rounding of values, the sums of shown results in the table may not match.

・

The reference value for the decay correction is the date and time of sampling.

Radiative equilibrium
evaluation
Radiative equilibrium
evaluations

Measurement, Total α(Pu, Am, Cm group)

Measurement, Total α(Pu, Am, Cm group)

Measurement, Total α(Pu, Am, Cm group)※1: Legally required activity concentration limit established in the Ordinance for Operational Safety and Protectionof Specified Nuclear Fuel Materials of the Nuclear Reactors at TEPCO’s Fukushima Daiichi (Appendix of firstand sixth column: The concentration limit in water outside the peripheral surveillance zone [In this table, Bq/cm3
was converted to Bq/L]).
※2: If it is not significantly present, it is marked with a "○"; if it is significantly present, it is marked with an "×".
The evaluation is made as not significantly present ("○") if any of the following are satisfied:・The measured nuclide concentration is below the detection limit.

・

Nuclides evaluated by radiative equilibrium, etc.: When the evaluated nuclide is detected, the concentration
is extremely low compared to the regulatory concentration limit, i.e., the evaluated value is less than the set
detection limit (less than 1/100 of the regulatory concentration limit), and can be judged to be equivalent toless than the detection limit.

Evaluated

Regulatory

Value

Concentration[Bq/L]

Ratio

Rh

ND

-

200,000

Rh

ND-

300,000

Evaluated
Nuclide
103m
106

7

Regulatory Limit※1[Bq/L]

119m

Sn

ND

-

2,000

Te

ND

-

300

Cs

1.4E-06

2.3E-09600

Ba

1.9E-01

2.4E-07800,000

Pr

ND-

20,000Pr

ND-

40,000

Am

ND

-

5

127m
135

137m
144

144m
242m

・

ND (Not Detected) in the table indicates that the value is below the detection limit.

※3: Details of the measurement and evaluation methodology are described below.
Measurement: The radiation of samples is measured then the results are converted into the concentrations of eachnuclide.
Total α (U, Np group): U and Np derived α rays of the samples were measured and the results are converted tototal α concentration.
Total α (Pu, Am, Cm group): Pu, Am, Cm derived α rays of the samples were measured and the results areconverted to total α concentration.
Radiative equilibrium evaluations: The state in which the ratio of the number of atoms of the parent nuclide tothat of its progeny nuclides in a decay series is nearly constant is calledradiative equilibrium. The concentration of each nuclide was evaluated basedon this radiative equilibrium relationship and the measurement results of theparent (or progeny) nuclide.
Relative ratio evaluation: The ratio of each nuclide present in the reactor is evaluated by taking into account thegeneration, decay, impairment loss, etc. of the nuclides. The concentration of eachnuclide is calculated by multiplying the measurement results of the reference nuclide
by its existence ratio.
※4: The ratio to the regulatory concentration limits of α nuclides (Am-243, Cm-242, and Cm-243) was calculated by
dividing the total alpha value by the lowest required activity concentration limit (4 Bq/L) of the selected alphanuclides.

8

Reference: Measurement and evaluation methods for each nuclide
in the third-party analysis of ALPS treated water
Measurement and evaluation methods for each nuclide

No.

Nuclide

1

3

2

14

3

54

4

55

5

59

6

58

7

60

8

63

9

65

10

79

11

86

12

89

13

90

14

90

Y

Evaluation

15

91

Y

γ-ray

16

95

Nb

γ-ray

17

99

18

103

H

in the third-party analysis of ALPS treated water
β-ray

C

β-ray

Mn

γ-ray

Fe

X-ray

Fe

γ-ray

Co

γ-ray

Co

γ-ray

Ni

β-ray

Zn

γ-ray

Se

ICP-MS

Rb

γ-ray

Sr

β-ray

Sr

β-ray

Tc

Ru

ICP-MS

γ-ray

Purify tritiated water by distillation and mixing sample and scintillator
Liquid scintillation counter
Isolation by collection on adsorbent, mixing sample and scintillator
Liquid scintillation counter
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
Isolation by resin and sedimentation
Low-energy photon detector (Ge-LEPS)
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
Isolation by resin, mixing sample and scintillator
Liquid scintillation counter
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
Isolation by resin
Inductively coupled plasma mass spectrometer
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
Isolation by resin and sedimentation
Beta-ray spectrometer (plastic scintillator)
Isolation by resin and sedimentation
Beta-ray spectrometer (plastic scintillator)
Radiative equilibrium evaluation
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
Isolation by resin
Inductively coupled plasma mass spectrometer
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector

9

19

106

20

103m

21

106

22

110m

23

113m

24

115m

25

119m

26

123

27

126

28

124

29

125

30

123m

31

125m

32

127

33

127m

34

129

35

129m

36

129

37

134

38

Ru

γ-ray

A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector

Rh

Evaluation

Radiative equilibrium evaluation

Rh

Evaluation

Radiative equilibrium evaluation

Ag

γ-ray

Cd

β-ray

Cd

γ-ray

Sn

Evaluation

Sn

γ-ray

Sn

γ-ray

Sb

γ-ray

Sb

γ-ray

Te

γ-ray

Te

Evaluation

Te

γ-ray

Te

Evaluation

Te

γ-ray

Te

γ-ray

I

X-ray

Cs

γ-ray

135

Cs

Evaluation

39

136

Cs

γ-ray

40

137

Cs

γ-ray

A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
Isolation by resin, mixing sample and scintillator
Liquid scintillation counter
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
Relative ratio evaluation:
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
Radiative equilibrium evaluation
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
Radiative equilibrium evaluation
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a measurement cell.

Low-energy photon detector (Ge-LEPS)
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
Relative ratio evaluation:
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector

10

41

137m

42

140

43

141

44

144

45

144

46

144m

47

146

48

Ba

Evaluation

Ba

γ-ray

Ce

γ-ray

Ce

γ-ray

Pr

Radiative equilibrium evaluation
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector

Evaluation

Radiative equilibrium evaluation

Pr

Evaluation

Radiative equilibrium evaluation

Pm

γ-ray

147

Pm

Evaluation

49

148

Pm

γ-ray

50

148m

51

151

52

152

53

154

54

155

55

153

56

160

57

234

58

238

59

237

60

238

61

239

Pm

γ-ray

Sm

Evaluation

Eu

γ-ray

Eu

γ-ray

Eu

γ-ray

Gd

γ-ray

Tb

γ-ray

U

α-ray

U

α-ray

Np

α-ray

Pu

α-ray

Pu

α-ray

A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
Relative ratio evaluation:
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
Relative ratio evaluation:
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
A single sample was prepared in a Marinelli beaker.
Gamma-ray spectrometry using high purity germanium (HPGe) detector
Separated by resin and evaporated and solidified on a stainless plate
α-ray scintillation counter (ZnS scintillator)
Separated by resin and evaporated and solidified on a stainless plate
α-ray scintillation counter (ZnS scintillator)
Separated by resin and evaporated and solidified on a stainless plate
α-ray scintillation counter (ZnS scintillator)
Separated by resin, collected as sedimentation, and evaporated to dryness
α-ray scintillation counter (ZnS scintillator)
Separated by resin, collected as sedimentation, and evaporated to dryness
α-ray scintillation counter (ZnS scintillator)

11

62

240

63

241

64

241

65

242m

66

243

67

242

68

243

69

244

Pu

α-ray

Pu

Evaluation

Am

α-ray

Am

Evaluation

Am

α-ray

Cm

α-ray

Cm

α-ray

Cm

α-ray

Separated by resin, collected as sedimentation, and evaporated to dryness
α-ray scintillation counter (ZnS scintillator)
Relative ratio evaluation:
Separated by resin, collected as sedimentation, and evaporated to dryness
α-ray scintillation counter (ZnS scintillator)
Relative ratio evaluation:
Separated by resin, collected as sedimentation, and evaporated to dryness
α-ray scintillation counter (ZnS scintillator)
Separated by resin, collected as sedimentation, and evaporated to dryness
α-ray scintillation counter (ZnS scintillator)
Separated by resin, collected as sedimentation, and evaporated to dryness
α-ray scintillation counter (ZnS scintillator)
Separated by resin, collected as sedimentation, and evaporated to dryness
α-ray scintillation counter (ZnS scintillator)

12