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Report No.

Preparation of plutonium standard material and future tasks

Sumi, Mika; Takamatsu, Mai*; Abe, Katsuo; Kageyama, Tomio ; Nakazawa, Hiroaki

All accountancy analyses at Plutonium Fuel Development Center (PFDC) are performed by isotope dilution mass spectrometry (IDMS) which well-characterized standard materials are required. Since there are no suppliers in Japan, all Pu CRMs are imported while difficulties of Pu transportation are increasing. It is required to secure reference materials for continuing reliable accountancy analysis. Recently, several examinations and tasting were performed at PFDC to save CRMs. Also, Pu was separated and purified from MOX powder (MOX-Pu) stored at PFDC and its potential as standard material has been evaluated. Make up value of MOX-Pu and prepared spikes will be validated by intercomparison including international laboratories.



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