Validation bias and uncertainty from subcritical experiments with an HEU storage vault
- Oak Ridge National Lab., TN (United States)
Previous calculations of the sensitivity of measured {sup 252}Cf-source-driven frequency analysis parameters to the subcriticality of the storage array and the moisture content of the concrete for a highly enriched uranium (HEU) storage vault have shown the usefulness of a subcritical measurements. This measurement with vault 16, a large array of steel tubes in concrete capable of safely storing tonnes of HEU at the Oak Ridge Y-12 plant and now under verification by the International Atomic Energy Agency (IAEA), provides data that can be used to obtain the neutron multiplication factor and the calculational bias and its uncertainty for this application. With the development of MCNP-DSP, and ORNL variation of MCNP, the measured frequency analysis parameters for this type of subcritical measurement can be calculated directly.
- OSTI ID:
- 411660
- Report Number(s):
- CONF-951006--
- Journal Information:
- Transactions of the American Nuclear Society, Journal Name: Transactions of the American Nuclear Society Vol. 73; ISSN 0003-018X; ISSN TANSAO
- Country of Publication:
- United States
- Language:
- English
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