Re-evaluation of the 1962 Mark VI-B dynamic tests regarding reactivity coefficients
- ESC-NATD/NS (US)
- Westinghouse Savannah River Co., Aiken, SC (US)
The 1962 Mark VI-B rod tests have been re-evaluated. A significantly lower (more negative) coolant coefficient is now ascribed to that test, {minus}1 pcm/Deg-C vs the previously reported +2 pcm/Deg-C. The change from the previous value is because of revisions to delayed neutron constants and accounting for spatial effects. The new value is in reasonable agreement with the currently calculated value of {minus}2 pcm/Deg-C, considering measurement and calculational uncertainties. Therefore, the authors conclude that the current analytic models for physics and transient analysis methodology (GLASS, GRIMHX & TRIMHX, AND MARY) are fully consistent with 1962 test observations, and that there is no basis for assigning a calculational bias or increasing uncertainty allowances.
- Research Organization:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC09-89SR18035
- OSTI ID:
- 10176384
- Report Number(s):
- WSRC-TR-91-395; ON: DE93018195; TRN: 93:002874
- Resource Relation:
- Other Information: PBD: Jun 1991
- Country of Publication:
- United States
- Language:
- English
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