Investigating dynamic parameters in HWZPR ased on the experimental and calculated results
- 1. Reactors Research School, Nuclear Science And Technology Research Institute, Atomic Energy Organization of Iran, Esfahan (Iran, Islamic Republic of)
Description
The neutron decay constant, α, and effective delayed neutron fraction, βeff, are important parameters for the control of the dynamic behavior of nuclear reactors. For the heavy water zero power reactor (HWZPR), this document describes the measurements of the neutron decay constant by noise analysis methods, including variance to mean (VTM) ratio and endogenous pulse source (EPS) methods. The measured α is successively used to determine the experimental value of the effective delayed neutron fraction as well. According to the experimental results, βeff of the HWZPR reactor under study is equal to 7.84e-3. This value is finally used to validate the calculation of the effective delayed neutron fraction by the Monte Carlo methods that are discussed in the document. Using the Monte Carlo N-Particle (MCNP)-4C code, a βeff value of 7.58e-3 was obtained for the reactor under study. Thus, the relative difference between the βeff values determined experimentally and by Monte Carlo methods was estimated to be < 4%
Additional details
Publishing Information
- Journal Title
- Nuclear Engineering and Technology
- Journal Volume
- 48
- Journal Issue
- 5
- Series
- 6 refs, 5 figs, 4 tabs
- Journal Page Range
- p. 1120-1125
- ISSN
- 1738-5733
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 47121281
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- COMPUTER CALCULATIONS; DECAY; DELAYED NEUTRON FRACTION; DYNAMICS; HWZPR REACTOR; M CODES; NOISE; VALIDATION
- Descriptors DEC
- COMPUTER CODES; EXPERIMENTAL REACTORS; HEAVY WATER MODERATED REACTORS; MECHANICS; NATURAL URANIUM REACTORS; REACTORS; RESEARCH AND TEST REACTORS; TESTING; THERMAL REACTORS; ZERO POWER REACTORS