Estimation of reactor core water level using gamma distribution measured at multiple axial points outside reactor in severe accident scenarios employing interacting multiple model

2021 ◽  
pp. 108877
Author(s):  
Seop Hur ◽  
Jung Taek Kim ◽  
Do Heon Kim ◽  
Anil Kumar Khambampati ◽  
Kyung Youn Kim
Keyword(s):  
Water Level ◽  
Gamma Distribution ◽  
Reactor Core ◽  
Severe Accident ◽  
Interacting Multiple Model ◽  
Multiple Model ◽  
Accident Scenarios

TRICO II Core Inventory Calculation and its Radiological Consequence Analyses

2016 ◽  
Vol 2 (2) ◽  
Author(s):  
J. L. Muswema ◽  
G. B. Ekoko ◽  
J. K.-K. Lobo ◽  
V. M. Lukanda ◽  
E. K. Boafo
Keyword(s):  
Fuel Element ◽  
Research Reactor ◽  
Source Term ◽  
Democratic Republic Of Congo ◽  
Reactor Core ◽  
Lessons Learned ◽  
Severe Accident ◽  
Plane Crash ◽  
Reactor Building ◽  
Accident Scenarios

Two severe accident scenarios are investigated in this paper as they have never been considered previously in the safety analysis report (SAR) of the Congo TRIGA Mark II research reactor (TRICO II) in Kinshasa, the Democratic Republic of Congo. The source term is derived from the reactor core after two postulated accidents: (1) a large plane crash with total destruction of the reactor building and (2) full damage of one fuel element while the reactor building remains intact. Total effective dose (TED), after core inventory, and dose profiles to human organs are derived to assess the operational safety of the reactor. Results from the study will be used to upgrade the current SAR of the reactor as the reactor safety and licensing concepts are changing over the years; the knowledge and lessons learned from the past experience are being updated accordingly with the available data. TEDs to workers of the facility show that higher values are obtained at areas near the source term at the time of the plane crash accident, which dies out as quickly as the plume is carried away following predominant meteorological conditions at the site. The situation with one fuel element totally damaged poses no threat as far as radiation protection is concerned and reveals a maximum TED of 1.30×10−7  mSv at 100 m from the reactor core. This shows that the operation of this type of research reactor is reliable and safe.

Interacting multiple model algorithm based on joint likelihood estimation

2011 ◽  
Vol 28 (4-6) ◽  
pp. 427-432
Author(s):  
Jie Sun ◽  
Chaoshu Jiang ◽  
Zhuming Chen ◽  
Wei Zhang
Keyword(s):  
Likelihood Estimation ◽  
Interacting Multiple Model ◽  
Multiple Model ◽  
Joint Likelihood ◽  
Model Algorithm
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