First Experiences Regarding Probabilistic Fire Safety Assessment for Full Power and Low Power/Shutdown Operational States

2004 ◽  
pp. 2468-2473
Author(s):  
Heinz Peter Berg ◽  
Marina Röwekamp ◽  
Michael Türschmann ◽  
Joachim von Linden
Keyword(s):  
Low Power ◽  
Fire Safety ◽  
Safety Assessment ◽  
Full Power

The extended living probabilistic safety assessment

2019 ◽  
Vol 234 (1) ◽  
pp. 183-192
Author(s):  
Marko Čepin
Keyword(s):  
Low Power ◽  
Nuclear Power ◽  
Safety Assessment ◽  
Risk Level ◽  
Probabilistic Safety Assessment ◽  
Core Damage ◽  
Full Power ◽  
Power Operation ◽  
Plant Shutdown ◽  
Probabilistic Safety

The term living probabilistic safety assessment was defined soon after the initial probabilistic safety assessments were implemented. The objective of this article is to present the extended living probabilistic safety assessment and its applications considering realistic nuclear power plant models, including the low power and shutdown plant operating states. One of the key objectives is to compare the suitability of conventional and additional risk measures, core damage frequency and conditional core damage frequency, respectively. The methods are presented considering all states of the plant from the full power operation to the low power and shutdown states. The example models of the nuclear power plants and the results of the living probabilistic safety assessment of the plant operating states are discussed. The results show that the risk of low power and shutdown states is generally smaller than the risk of full power operation, but the low power and shutdown plant operating states differ significantly among each other regarding the risk level. The deficiency of living probabilistic safety assessment applied to the plant shutdown states is connected with significantly increased human effort for the analyses, with a significantly greater amount of results and with increased uncertainty of some parameters due to the larger dynamics of actions in the plant shutdown versus the full power operation states. The benefit of the living probabilistic safety assessment applied to the plant low power and shutdown states lays in consideration of all states and potential identification of risk significant states and directions for possible safety improvements.

Matrix Calculation of Fire Safety Assessment on Multi-purpose Buildings

2005 ◽  
Vol 13 (3) ◽  
pp. 231-255
Author(s):  
J. Chi ◽  
Y. Huang ◽  
C. Chen ◽  
J. Chen ◽  
C. Su
Keyword(s):  
Fire Safety ◽  
Safety Assessment ◽  
Matrix Calculation

Fire Safety Assessment of Exterior Thermal Insulation Materials using a Cone Calorimeter

2012 ◽  
Vol 22 (1) ◽  
pp. 131-141
Author(s):  
Qi Yanjun ◽  
Wang Xuegui ◽  
Cui Yu ◽  
Zhang Heping
Keyword(s):  
Thermal Insulation ◽  
Fire Safety ◽  
Cone Calorimeter ◽  
Safety Assessment ◽  
Insulation Materials

Fire safety assessment of semi-open car parks based on validated CFD simulations

2013 ◽  
Vol 6 (4) ◽  
pp. 385-394 ◽  
Author(s):  
M. G. M. van der Heijden ◽  
M. G. L. C. Loomans ◽  
A. D. Lemaire ◽  
J. L. M. Hensen
Keyword(s):  
Fire Safety ◽  
Safety Assessment ◽  
Cfd Simulations

scholarly journals Fire safety assessment and upgrading of existing traffic tunnels

2013 ◽  
Vol 6 ◽  
pp. 06001
Author(s):  
U. Diederichs ◽  
L. Bodnarova ◽  
V. Petranek
Keyword(s):  
Fire Safety ◽  
Safety Assessment

Proposal of Changes in Fire Safety Assessment for Extending the Usability of Wood in Buildings

2020 ◽  
pp. 275-280
Author(s):  
Petr Kučera ◽  
Isabela Bradáčová ◽  
Jiří Pokorný ◽  
Tereza Česelská
Keyword(s):  
Fire Safety ◽  
Safety Assessment ◽  
In Fire

Bayesian network modelling for fire safety assessment

2011 ◽  
pp. 626-633 ◽  
Author(s):  
D Matellini ◽  
A Wall ◽  
I Jenkinson ◽  
J Wang ◽  
R Pritchard
Keyword(s):  
Bayesian Network ◽  
Fire Safety ◽  
Safety Assessment ◽  
Network Modelling

Estimation of control rod worth, xenon effect on reactivity and power defect of BAEC TRIGA Mark-II research reactor

2018 ◽  
Vol 33 (39) ◽  
pp. 1850233
Author(s):  
Md. Mehedi Hassan ◽  
K. M. Jalal Uddin Rumi ◽  
Md. Nazrul Islam Khan ◽  
Rajib Goswami
Keyword(s):  
Theoretical Analysis ◽  
Low Power ◽  
Temperature Effects ◽  
Research Reactor ◽  
Power Level ◽  
Fuel Temperature ◽  
Control Rod ◽  
Full Power ◽  
Triga Mark Ii ◽  
Control Rods

In this work, control rod worth, xenon (Xe) effect on reactivity and power defect have been measured by doing experiments in the BAEC TRIGA Mark-II research reactor (BTRR) and through established theoretical analysis. Firstly, to study the xenon-135 effect on reactivity, reactor is critical at 2.4 MW for several hours. Next, experiments have been performed at very low power (50 W) to avoid temperature effects. Moreover, for the power defect experiment, different increasing power level has been tested by withdrawing the control rods. Finally, it is concluded that the total control rods worth of the BAEC TRIGA Mark-II research reactor, as determined through this study, is enough to run the reactor at full power (3 MW) considering the xenon-135 and fuel temperature effects.

Sign in / Sign up

Export Citation Format

Share Document