NE 531 Hayes Lec. 7
NE 531 Hayes Lec. 7
NE 531 Hayes Lec. 7
NE 531 Hayes Lec. 7
NE 531 Hayes Lec. 7
Example spent fuel reprocessing systems (at the Savannah River Site)
NE 531 Hayes Lec. 7
Homework problems from crit safety book
• Chapter 2 problems– 1, 2, 5, 6 & 7
NE 531 Hayes Lec. 7
Material Control & Accountability MC&AMaterial Balance Areas (MBA) Destructive Assays
NE 531 Hayes Lec. 7
Material Control & Accountability MC&AMaterial Balance Areas (MBA) Destructive Assays
continued
NE 531 Hayes Lec. 7
Material Control & Accountability MC&AMaterial Balance Areas (MBA) Non-Destructive Assays
• Electronic balances and load cell based weighing systems
• HPGe or equivalent (LaBr3 or CdZnTe at lower res)
• Neutron counters (shielded neutron assay probe or SNAP)
• Simple gamma counters (gross or spectral)
NE 531 Hayes Lec. 7
MBA NDA continued• Enrichment meters (assumes chemical
form and phase)– Various alternatives looking at specific lines of U
or Pu
• High level neutron coincidence counters – Active and passive options are available
including a Cf Shuffler
• Calorimetry (effectively a gold standard for alpha emission)
• Segmented (collimated) or Tomographic (CT) gamma scanner
• Neutron multiplicity counters
NE 531 Hayes Lec. 7
NE 531 Hayes Lec. 7
NE 531 Hayes Lec. 7
NE 531 Hayes Lec. 7