In-field Verification Activities
National inspection carry out simultaneously as the IAEA inspection, and carry out the following inspection activities in cooperation with the IAEA.
Joint Use of Equipment
Safeguards equipment, such as NDA, surveillance camera, seal are used jointly with the IAEA in the field.
- Book Audit
- Item Counting, Item Identification
- NDA Measurement
- Sample Taking for DA
- C/S Service & Data Collection etc.
Book Audit, IC/ID
NDA, Sample Taking
In order to confirm the operator’s measurement precision, accuracy and the reliability of the material balance reports, take a small amount of nuclear material sample, and analyze in the Tokai and Rokkasho safeguards analytical laboratories operated by NMCC.
On-Site Laboratory(OSL) in the RRP
The OSL in the Rokkasho Reprocessing Plant, which is used jointly with the IAEA, enables the inspectorate to conduct on-site sample verifications in an accurate and timely manner. The NMCC and IAEA analyze them independently for own independent conclusion.
Surface ionization mass spectrometry
To examine correctness of operator’s measurement system, various information obtained in safeguards inspection, and analysis results of the samples are statistically compared with operator’s accounting reports, and to maintain the quality of operator's system to the international standard level.
- Two-comparison analysis between inspectorate and operator on destructive and non-destructive assay data
- Performance analysis of measurement error
- Evaluation of SRD(shipper/receiver difference) and MUF(material unaccounted for)
- Evaluation of operator’s NRTA( near real time material accountancy) data
Information Processing Computer System
Technical Development and Research
In cooperation with IAEA and LANL,NMCC has been developing the verification elements and systems to be applied to Rokkasho Reprocessing Plant(RRP) and JNFL MOX Fuel Fabrication Plant(J-MOX) .
NMCC researches domestic and international trends on nuclear non-proliferation, safeguards, nuclear security and physical protection, to strengthen the technical capability and increasing reliability for ensuring peaceful use of the nuclear activities.
Spent Fuel Assembly Verification
System at RRP
Improved Pu Canister Assay
System (iPCAS) at RRP
Advanced Verification for Inventory
Samples system (AVIS) for J-MOX