98/00368 Using life cycle revenue loss and Monte Carlo simulation as a prior and direct assessment of consequences of un-wished events
- Publisher
- Elsevier Science
- Year
- 1998
- Weight
- 211 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0140-6701
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✦ Synopsis
05 Nuclear fuels (economics, policy, supplies, forecasts) pressure, is allowed to change. Finally, the response of the steam generators to steam valve perturbation is compared for the SIR and the H. Robinson reactors.
98/00363
Feynman-a correlation analysis by prompt-photon detection Hashimoto, K. ef al. Alan. Nitcl. Energy, 1998, 25, (l-3) 13-22. Using the UTR-KINK1 reactor, two-detector Feynman-ru measurements were carried out by detecting high-energy, prompt gamma rays. The reactor is a light-water-moderated and graphite-reflected reactor. The conventional measurements were also performed by detecting neutrons. These measurements were carried out in the subcriticality range from 0 to $1.8. The gatetime dependence of the variance-and covariance-to-mean ratios measured by gamma-ray detection were nearly identical with those obtained using standard neutron-detection techniques. Agreement was found between the prompt-neutron decay constants inferred from the gamma-ray correlation data and those from the neutron data. Furthermore, the correlated-touncorrelated amplitude ratios obtained by gamma-ray detection was dependent on the low-energy discriminator level of the single-channel analyser. The discriminator level was determined as optimum for obtaining a maximum value of the amplitude ratio. The maximum amplitude ratio was much larger than that obtained by neutron detection. The subcriticality dependence of the decay constant obtained by gamma-ray detection was consistent with that obtained by neutron detection and followed the linear relation based on the one-point kinetic model in the vicinity of delayed critical. This gamma-ray correlation technique can be applied to measure reactor kinetic parameters more efficiently.