Characterization of consistent NDA (nondestructive assay) standards

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6977656

Rodenburg, W W; Novak, E F; Seiler, R J

By combining calorimetry and traditional analytical methods five sets of unique NDA standards were characterized for the Savannah River Plant (SRP) of E.I. Du Pont de Nemours, Inc. The calorimetry measurements make it possible to nondestructively verify the homogeneity of the plutonia stock and to assure that the analytical aliquots were representative of the parent material. Two assay values were determined by calorimetric assay. When the isotopic composition was determined by mass spectroscopy and alpha pulse height analysis, the agreement between Pu content by calorimetry and controlled potential coulometry was within 0.06% for all five isotopic compositions. When nondestructive, gamma-ray isotopic techniques were used to assay the 1500 gram standards the agreement was within 0.1% for all five materials. The new half-lives and specific power recommended in the latest revision of ANSI N15.22-1987, Calibration Techniques for the Calorimetric Assay of Plutonium Bearing Solids were used for all computations. The standards were certified for plutonium content, isotopic composition, and thermal power. The mass of the standards varied from 20 to 1500 grams with /sup 240/Pu compositions ranging from 3 to 15 percent. 7 tabs.

• Research Organization: Monsanto Research Corp., Miamisburg, OH (USA). Mound
• DOE Contract Number: AC04-76DP00053
• OSTI ID: 6977656
• Report Number(s): MLM-3526(OP); CONF-880631-20; ON: DE88012883
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400202* -- Isotope Effects
Isotope Exchange
& Isotope Separation
400702 -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPOUNDS
ACTINIDE ISOTOPES
AMERICIUM ISOTOPES
CALORIMETRY
CHALCOGENIDES
CHEMICAL ANALYSIS
DATA
EXPERIMENTAL DATA
HALF-LIFE
INFORMATION
ISOTOPE RATIO
ISOTOPES
NONDESTRUCTIVE ANALYSIS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PLUTONIUM COMPOUNDS
PLUTONIUM ISOTOPES
PLUTONIUM OXIDES
QUALITATIVE CHEMICAL ANALYSIS
STANDARDS
STATISTICAL DATA
TRANSURANIUM COMPOUNDS