THE DETERMINATION OF BURN-UP IN SPENT FUEL ELEMENTS

Journal Article · Wed Nov 01 04:00:00 EST 1961 · Atomnaya Energ.

OSTI ID:4812027

Smirnov-Averin, A P; Galkov, V I; Sheinker, I G; Meshcheryakov, V P; Stabenova, L A; Kir'yanov, B S

A simple method of determining the burn-up of U/sup 235/ depends on the determination of long-lived Cs/sup 137/ by scintillation counting. Corrections for the Cs/sup 134/ content can be made by counting the beta - gamma - coincidences which are due only to the Cs/sup 134/ activity content. The burn-up at various points of a spent fuel rod was obtained by determinign the Cs/sup 137/ content. The results agreed within 10% with the massspectrometric determinations of the U/sup 235/ content. The content of Tc/sup 99/ (T/sub 1/2/ = 2.2 x 10/sup 5/ years) was also determined by multiple extraction with methylethylketone and final purification on a cation exchange. The Tc/sup 99/ was counted on a 4 pi - counter. The burnup determined from the Tc/sup 99/ content was found to be 67%. A Cs/sup 137/ determination on the same sample gave a burnup of 68%, while the mass-spectroscopic value for the same sample was 66.2%. As is evident, the agreement between the various methods is good. (TTT)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-16-007243
• OSTI ID: 4812027
• Journal Information: Atomnaya Energ., Journal Name: Atomnaya Energ. Vol. Vol: 11
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

BETA DETECTION
BETA PARTICLES
BURNUP
CATIONS
CESIUM 134
CESIUM 137
COINCIDENCE METHODS
COUNTERS
DISTRIBUTION
ERRORS
ETHYL RADICALS
FISSION PRODUCTS
FUEL ELEMENTS
GAMMA DETECTION
GAMMA RADIATION
HALF-LIFE
ION EXCHANGE
KETONES
MASS SPECTROMETERS
MEASURED VALUES
METHYL RADICALS
RADIOACTIVITY
RADIOISOTOPES
REACTIVITY
REACTOR TECHNOLOGY
REACTORS
RODS
SCINTILLATION COUNTERS
SEPARATION PROCESSES
SOLVENT EXTRACTION
TECHNETIUM 99
URANIUM 235