Guidelines for applying to the “Project of Decommissioning and Contaminated Water Management(Development of Analysis and Estimation Technology for Characterization of Fuel Debris (Development of Technologies for Enhanced
Analysis Accuracy, Thermal Behavior Estimation, and Abbreviated Analysis))”Comparison Table

Rev.
1Date
Mar. 29

Item
Subsidized Project Name
8. Application Procedure
Form 1
Form 3Form 4Form 5Page
11624
363839Line
421
5423

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2. Contents of Project229Old version
New version
Development of Technologies forDevelopment of Technologies forEnhanced Analysis Accuracy, Thermal Enhanced Analysis Accuracy, Thermal
Behavior Estimation, and Simplified
Behavior Estimation, and AbbreviatedAnalysisAnalysis

their chemical stability varies
depending on whether they are part ofthe chemical forms of UO2 and Zr, Uand ZrO2, or (U, Zr) O2.

their chemical stability varies
depending on whether they are part ofthe chemical forms of UO2 and Zr, U

the calorific value in the reactor will
decrease as the fuel debris retrieval
work progresses in the future.

and ZrO2, or (U0.5, Zr0.5) O2, U0.5 and Zr0.5

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2. Contents of Project237

the calorific value in the reactor will
decrease as the fuel debris removal
work progresses in the future.

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2. Contents of Project3

7

the accumulation and treatment of
the accumulation and treatment ofcontaminated water and thecontaminated water and theconfinement function of the reactor
confinement function of the Primarycontainment vessel (hereinafter referred Containment Vessel (hereinafterto as "PCV"), etc.
referred to as "PCV"), etc.

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2. Contents of Project3

8 - 9 Detailed investigations inside the PCV
so far have confirmed the presence ofdeposits that appear
to be fuel debris on existing structures
such as guide pipes and gratings

In detailed investigations inside thePCV so far the presence of deposits
that appear to be fuel debris has been
observed on existing structures such as
guide pipes and steel gratings.

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2. Contents of Project3

11

it is necessary to cut it many times toreduce its size before containing in astorage container adopting shapecontrol as one of the measures ofcriticality prevention.

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2. Contents of Project3

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15

each process requires a lot of labor and each process requires a lot of labor andtime such as curing work for pollution time such as curing work forprevention, pollution inspection andcontamination prevention,decontamination work, etc.
contamination inspection anddecontamination work, etc.

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2. Contents of Project3

19

By developing a simple analysis
By developing an abbreviated analysis
technology that can quickly confirm or technology that can quickly confirm or
evaluate the presence or absence of fuel evaluate the presence or absence of fuelcomponents adhering to or penetrating components adhering to or penetrating
into existing structures,
into existing structures,Mar. 29

2. Contents of Project

42

https://dccc-program.jp/3330

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2. Contents of Project44

https://dccc-program.jp/category/result https://en.dcccprogram.jp/category/result

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2. Contents of Project4

13

Amorphous, not a crystalline structure, Amorphous, not a crystalline structure,would not create a unique peak in the would not create a characteristic peakmeasured waveform.
in the measured spectrum.

it is necessary to cut it many times toreduce its size before containing in astorage container adopting formmanagement as one of the measures ofcriticality prevention.

13 - 14 In addition to the large mass of thetransport container with sufficientshielding thickness,

In addition, since the transport
container with sufficient shielding
thickness has the large mass,

https://en.dccc-program.jp/3065

Mar. 29

2. Contents of Project4

13 - 15 Considering that these obstructive
factors make fuel debris analysis moredifficult, it shall be analyzed withmultiple analytical institutions byproducing and using simulated fueldebris containing multiple
microstructures.

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2. Contents of Project

420

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429

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2. Contents of Project4

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2. Contents of Project64

investigation and evaluation shall be
carried out on temperature distribution
with no water injection or intermittent
water injection,investigation and evaluation shall be
carried out on temperature distribution
with no water injection and/orintermittent water injection,

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2. Contents of Project

625

Technology Development for Simple(on-the-spot) Analysis

Technology Development forAbbreviated (in-situ) Analysis

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2. Contents of Project

628

Therefore, technology is required thatcan detect containing uranium or
nuclear fuel easily or promptly at thework site (on the spot).

Therefore, technology is required thatcan detect containing uranium or
nuclear fuel easily or promptly at thework site (in-situ).

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2. Contents of Project7

1

It shall be investigated analysis andIt shall be investigated analysis andmeasurement methods that are effective measurement methods that are effective
for simple (on-the-spot) analysis andfor abbreviated (in-situ) analysis andshall be sorted out their strengths and shall be sorted out their strengths andweaknesses.
weaknesses.

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2. Contents of Project73 - 4 Furthermore, regarding the investigated Furthermore, regarding the investigatedanalysis and measurement method for analysis and measurement method forsimple (on-the-spot) analysis, it shall abbreviated (in-situ) analysis, it shallbe investigated on effective test
be investigated on effective test
methods, development items andmethods, development items andevaluation items, etc. for on-site
evaluation items, etc. for in-situ
application.
application.

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2. Contents of Project7

9

it is necessary to actually conduct
measurements using uranium and toverify the effectiveness of a method.

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2. Contents of Project

710

Verification plan shall be formulated
Verification plan shall be formulated
for the uranium content, characteristics, for the uranium content, characteristics,
production method, measurement
manufacturing method, measurement
location, etc.
location, etc.

In the production of simulated fueldebris,
The analysis then conducted shall befocused on the identification ofmicrostructures.

Based on the fact that fuel debris
analysis becomes more difficult due tothese obstacles, simulated fuel debris
containing multiple microstructures
shall be manufactured and analysis in
multiple analytical institutions shall beconducted using the simulated fueldebris.
In the manufacturing of simulated fueldebris,
The analysis then shall be focused on
the identification ofmicrostructures.

32 - 35 the participating institutions may have because the participating institutions
different licenses of hot laboratory
may have different licenses of hot
facilities and it may not be allowed to facilities, simulated fuel debris
handle (analyze, observe, and measure) containing unirradiated uranium cannot
simulated fuel debris containing
be handled (analyze, observe, andunirradiated uranium in the equipment measure) in the equipment that handles
where the actual fuel debris would be actual fuel debris.
treated.

it is necessary to actually conduct
measurements using uranium and toverify the effectiveness of the methods.