Demonstration of the accurate volume measurement system in the plutonium conversion development facility

Conference · Tue Jan 01 04:00:00 EST 1991 · Nuclear Materials Management. Annual Meeting Proceedings; (United States)

OSTI ID:5664048

Hosoma, T; Takahashi, S; Maruishi, Y ^[1]

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1. Tokai Fuel Plant, Tokai Works, PNC, Toaki-mura, Ibaraki-ken 319-11 (JP)

This paper reports that in a nuclear materials reprocessing plant or a plutonium conversion plant, it is very important for material accountancy and safeguards that volume of Plutonium Nitrate solution (PuN) is measured accurately. a new accurate volume measurement system has been developed and demonstrated at the Plutonium Conversion Development Facility (PC-DF) in PNC Tokai Works. Two differential digital quartz pressure transducers are set with careful settings and some adaptations for each tank. Error of pressure measurement is always within 2 Pa (0.01% of measurement range) for over five years with recalibration once a year. Operators can monitor accurate volume continuously for each tank and they are free from unexpected maintenance. This system has been used for accountancy works and demonstrated successfully to STA (Science and Technology Agency of Japan) and IAEA during inspections for safeguards, such as transfers of PuN from the Tokai Reprocessing Plant (TRP) to PCDF, physical Inventory takings, and annual tank recalibrations, since 1984.

• OSTI ID: 5664048
• Report Number(s): CONF-910774--
• Conference Information: Journal Name: Nuclear Materials Management. Annual Meeting Proceedings; (United States) Journal Volume: 20
• Country of Publication: United States
• Language: English

Related Subjects

055001* -- Nuclear Fuels-- Safeguards
Inspection
& Accountability-- Technical Aspects
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
ACCOUNTING
ACCURACY
ACTINIDE COMPOUNDS
ACTINIDES
ASIA
CONTAINERS
CONVERSION
DEVELOPED COUNTRIES
DIGITAL SYSTEMS
DISPERSIONS
ELEMENTS
ERRORS
FUEL REPROCESSING PLANTS
IAEA
INTERNATIONAL ORGANIZATIONS
JAPAN
MANAGEMENT
MATERIALS
MEASURING METHODS
METALS
MINERALS
MIXTURES
NITRATES
NITROGEN COMPOUNDS
NUCLEAR FACILITIES
NUCLEAR MATERIALS MANAGEMENT
OXIDE MINERALS
OXYGEN COMPOUNDS
PLUTONIUM
PLUTONIUM COMPOUNDS
PLUTONIUM NITRATES
PRESSURE MEASUREMENT
QUARTZ
RADIOACTIVE MATERIALS
SAFEGUARDS
SOLUTIONS
TANKS
TRANSURANIUM COMPOUNDS
TRANSURANIUM ELEMENTS
VOLUME