Use of automated controlled-potential coulometry system for plutonium product accountancy analysis at Tokai reprocessing plant

Conference · Fri Jan 01 00:00:00 EST 1988 · Nucl. Mater. Manage. Annu. Meet. Proc.; (United States)

OSTI ID:6766936

Kuno, Y; Abe, K; Hayashi, N; Wachi, I ^[1]

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1. Power Reactor and Nuclear Fuel Development Corp. (PNC), Tokai-mura, Naka-gun, Ibaraki-ken 319-11 (JP)

The controlled-potential coulometry has been adopted for plutonium product accountancy analysis at the Tokai reprocessing plant since 1985. The reliability of plutonium product analysis has been improved by introducing this method which is capable of better precision than the titration that was previously used. It has been found that the impurities such as neptunium, chromium and americium, which are thought to interfere with AgO-Fe(II)-Cr(VI) titration method, do not affect the controlled-potential coulometry. Iron, which is regarded as an impurity interfering with the coulometry, is corrected with simple measurement procedure using spectrophotometer. The fully automated coulometry system has been developed based on the experience of using manually operated system. The system consists of two symmetric parts. Each has one measurement position and one electrode washing position and is designed to load up to six cells. The system is calibrated with iron standard sample, because no significant difference between calibrations using metallic standard of plutonium and that of iron has been found. Precision of the automated system is within 0.1%.

• OSTI ID: 6766936
• Report Number(s): CONF-880631-
• Journal Information: Nucl. Mater. Manage. Annu. Meet. Proc.; (United States), Vol. 17; Conference: 29. annual meeting of the Institute of Nuclear Materials Management, Las Vegas, NV, United States, 26 Jun 1988
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
JAPAN
FUEL REPROCESSING PLANTS
PLUTONIUM
ACCOUNTABILITY
AMERICIUM
AUTOMATION
CALIBRATION
CHROMIUM
NEPTUNIUM
SPECTROPHOTOMETRY
ACTINIDES
ASIA
ELEMENTS
METALS
NUCLEAR FACILITIES
TRANSITION ELEMENTS
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
220700* - Nuclear Reactor Technology- Plutonium & Isotope Production Reactors
050800 - Nuclear Fuels- Spent Fuels Reprocessing
055001 - Nuclear Fuels- Safeguards
Inspection
& Accountability- Technical Aspects