Stability analysis of a liquid-metal reactor and its primary heat transport system

Depiante, E.V.

doi:10.1016/0029-5493(94)90097-3

Cited by 8 publications

(13 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The stability can also be assessed by more formal methods that examine eigenvalues of the system linearized about an operating point. [6] The physical processes that govern the response of the reactor to a change in the load is described and a simple expression that predicts how reactor stability trends with plant parameter values is given below.…”

Section: Stabilitymentioning

confidence: 99%

“…Another stability assessment was made by comparing the values of two parameters identified in [6] as being important for controlling stability. These parameters and their values appear as the Table III Deviation (Fig.…”

Section: Stabilitymentioning

confidence: 99%

“…These parameters and their values appear as the Table III Deviation (Fig. 35 [15 Figure 6 shows these values plotted on a stability map taken from [6]. According to this map the core power again is stable with respect to coupling to a heat sink.…”

Section: Stabilitymentioning

confidence: 99%

See 2 more Smart Citations

Dynamic modeling efforts for system interface studies for nuclear hydrogen production.

Vilim¹

2007

View full text Add to dashboard Cite

Section: Stabilitymentioning

confidence: 99%

Section: Stabilitymentioning

confidence: 99%

See 1 more Smart Citation

Dynamic modeling efforts for system interface studies for nuclear hydrogen production.

Vilim¹

2007

View full text Add to dashboard Cite

“…The stability can also be assessed by more formal methods that examine eigenvalues of the system linearized about an operating point. (Depiante, 1994) Below we examine the physical processes that govern the response of the reactor to a change in the load. A simple expression is derived for predicting how reactor stability trends with plant parameter values.…”

Section: Reactor Stabilitymentioning

confidence: 99%

“…Another stability assessment was made by comparing the values of two parameters identified in Depiante (1994) as being important for controlling stability. These parameters and their values are plotted on a stability map taken from Depiante.…”

Section: Simplified Analysismentioning

confidence: 99%

HyPEP FY-07 Report: Initial Calculations of Component Sizes, Quasi-Static, and Dynamics Analyses

Oh¹

2007

View full text Add to dashboard Cite

The Very High Temperature Gas-Cooled Reactor (VHTR) coupled to the High Temperature Steam Electrolysis (HTSE) process is one of two reference integrated systems being investigated by the U.S. Department of Energy and Idaho National Laboratory for the production of hydrogen. In this concept a VHTR outlet temperature of 900 °C provides thermal energy and high efficiency electricity for the electrolysis of steam in the HTSE process. In the second reference system the Sulfur Iodine (SI) process is coupled to the VHTR to produce hydrogen thermochemically. This report describes component sizing studies and control system strategies for achieving plant production and operability goals for these two reference systems. The optimal size and design condition for the intermediate heat exchanger, one of the most important components for integration of the VHTR and HTSE plants, was estimated using an analytic model. A partial load schedule and control system was designed for the integrated plant using a quasi-static simulation. Reactor stability for temperature perturbations in the hydrogen plant was investigated using both a simple analytic method and a dynamic simulation. Potential efficiency improvements over the VHTR/HTSE plant were investigated for an alternative design that directly couples a High Temperature Steam Rankin Cycle (HTRC) to the HTSE process. This work was done using the HYSYS code and results for the HTRC/HTSE system were compared to the VHTR/HTSE system. Integration of the VHTR with SI process plants was begun. Using the ASPEN plus code the efficiency was estimated. Finally, this report describes planning for the validation and verification of the HYPEP code. iv v

show abstract

Tailoring the response of Autonomous Reactivity Control (ARC) systems

Qvist

Hellesen

Gradecka

et al. 2017

Annals of Nuclear Energy

View full text Add to dashboard Cite

The Autonomous Reactivity Control (ARC) system was developed to ensure inherent safety of Generation-IV reactors while having a minimal impact on reactor performance and economic viability. In this study we present the transient response of fast reactor cores to postulated accident scenarios with and without ARC systems installed. Using a combination of analytical methods and numerical simulation, the principles of ARC system design that assure stability and avoids oscillatory behavior have been identified. A comprehensive transient analysis study for ARC-equipped cores, including a series of Unprotected Loss of Flow (ULOF) and Unprotected Loss of Heat Sink (ULOHS) simulations, were performed for Argonne National Laboratory (ANL) Advanced Burner Reactor (ABR) designs. With carefully designed ARCsystems installed in the fuel assemblies, the cores exhibit a smooth non-oscillatory transition to stabilization at acceptable temperatures following all postulated transients. To avoid oscillations in power and temperature, the reactivity introduced per degree of temperature change in the ARC system needs to be kept below a certain threshold the value of which is system dependent, the temperature span of actuation needs to be as large as possible.

show abstract

Stability analysis of a liquid-metal reactor and its primary heat transport system

Cited by 8 publications

References 7 publications

Dynamic modeling efforts for system interface studies for nuclear hydrogen production.

Dynamic modeling efforts for system interface studies for nuclear hydrogen production.

HyPEP FY-07 Report: Initial Calculations of Component Sizes, Quasi-Static, and Dynamics Analyses

Tailoring the response of Autonomous Reactivity Control (ARC) systems

Contact Info

Product

Resources

About