Preliminary Simulation Results of Peach Bottom Unit 2 Cycles 1 and 2 with MPACT

Sooyoung Choi; Andrew Ward; Aaron Graham; Benjamin Collins; Brendan Kochunas; Mehdi Asgari

doi:10.13182/PHYSOR22-37699

Preliminary Simulation Results of Peach Bottom Unit 2 Cycles 1 and 2 with MPACT

Sooyoung Choi, Andrew Ward, Aaron Graham, Benjamin Collins, Brendan Kochunas, Mehdi Asgari

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

This paper describes the preliminary results of Peach Bottom 2 (PB2) cycles 1 and 2 analysis by MPACT. MPACT has been recently extended to analyze boiling water reactors (BWRs), and the purpose of this paper is to verify and validate MPACT against the BWR core follow simulation. The computed eigenvalue and the travelling in-core probe (TIP) response are compared to the published measured values. The average cycle errors for k_eff are 425 and 178 pcm for cycles 1 and 2, respectively. These errors are within the 500 pcm uncertainty. The TIP 3D root means square errors over the cycle are 8.47 and 7.51% for cycles 1 and 2, respectively. The TIP calculation error is also within the 10.8% uncertainty (2σ), which was evaluated by comparing symmetric locations. MPACT also shows a better results in the k_eff and TIP calculations than the two-step code system TRITON/PARCS. The initial steady-state of the BWR Turbine Trip test 2 benchmark is also simulated. The k_eff error is -141 pcm, and the axial power error is 3.11%. For this problem, MPACT predicts the reactor parameters with higher accuracy than the commercial reactor design code system CASMO5/SIMULATE5.

Original language	English
Title of host publication	Proceedings of the International Conference on Physics of Reactors, PHYSOR 2022
Publisher	American Nuclear Society
Pages	2316-2325
Number of pages	10
ISBN (Electronic)	9780894487873
DOIs	https://doi.org/10.13182/PHYSOR22-37699
State	Published - 2022
Event	2022 International Conference on Physics of Reactors, PHYSOR 2022 - Pittsburgh, United States Duration: May 15 2022 → May 20 2022

Publication series

Name	Proceedings of the International Conference on Physics of Reactors, PHYSOR 2022

Conference

Conference	2022 International Conference on Physics of Reactors, PHYSOR 2022
Country/Territory	United States
City	Pittsburgh
Period	05/15/22 → 05/20/22

Funding

This research made use of the resources of the High Performance Computing Center at Idaho National Laboratory, which is supported by the Office of Nuclear Energy of the US Department of Energy and the Nuclear Science User Facilities under Contract No. DE-AC07-05ID14517. *Corresponding author †This manuscript was co-authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). We would like to thank Exelon Corporation for initiating this project with Oak Ridge National Laboratory, Idaho National Laboratory, the University of Michigan, North Carolina State University, and the University of Illinois Urbana-Champaign under US Department of Energy Contract No. DE-AC05-00OR22725.

Keywords

MPACT
Peach Bottom 2
VERA
Validation
Verification

Access to Document

10.13182/PHYSOR22-37699

Cite this

Choi, S., Ward, A., Graham, A., Collins, B., Kochunas, B., & Asgari, M. (2022). Preliminary Simulation Results of Peach Bottom Unit 2 Cycles 1 and 2 with MPACT. In Proceedings of the International Conference on Physics of Reactors, PHYSOR 2022 (pp. 2316-2325). (Proceedings of the International Conference on Physics of Reactors, PHYSOR 2022). American Nuclear Society. https://doi.org/10.13182/PHYSOR22-37699

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title = "Preliminary Simulation Results of Peach Bottom Unit 2 Cycles 1 and 2 with MPACT",

abstract = "This paper describes the preliminary results of Peach Bottom 2 (PB2) cycles 1 and 2 analysis by MPACT. MPACT has been recently extended to analyze boiling water reactors (BWRs), and the purpose of this paper is to verify and validate MPACT against the BWR core follow simulation. The computed eigenvalue and the travelling in-core probe (TIP) response are compared to the published measured values. The average cycle errors for keff are 425 and 178 pcm for cycles 1 and 2, respectively. These errors are within the 500 pcm uncertainty. The TIP 3D root means square errors over the cycle are 8.47 and 7.51\% for cycles 1 and 2, respectively. The TIP calculation error is also within the 10.8\% uncertainty (2σ), which was evaluated by comparing symmetric locations. MPACT also shows a better results in the keff and TIP calculations than the two-step code system TRITON/PARCS. The initial steady-state of the BWR Turbine Trip test 2 benchmark is also simulated. The keff error is -141 pcm, and the axial power error is 3.11\%. For this problem, MPACT predicts the reactor parameters with higher accuracy than the commercial reactor design code system CASMO5/SIMULATE5.",

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author = "Sooyoung Choi and Andrew Ward and Aaron Graham and Benjamin Collins and Brendan Kochunas and Mehdi Asgari",

note = "Publisher Copyright: {\textcopyright} 2022 Proceedings of the International Conference on Physics of Reactors, PHYSOR 2022. All Rights Reserved.; 2022 International Conference on Physics of Reactors, PHYSOR 2022 ; Conference date: 15-05-2022 Through 20-05-2022",

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language = "English",

series = "Proceedings of the International Conference on Physics of Reactors, PHYSOR 2022",

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Choi, S, Ward, A, Graham, A, Collins, B, Kochunas, B & Asgari, M 2022, Preliminary Simulation Results of Peach Bottom Unit 2 Cycles 1 and 2 with MPACT. in Proceedings of the International Conference on Physics of Reactors, PHYSOR 2022. Proceedings of the International Conference on Physics of Reactors, PHYSOR 2022, American Nuclear Society, pp. 2316-2325, 2022 International Conference on Physics of Reactors, PHYSOR 2022, Pittsburgh, United States, 05/15/22. https://doi.org/10.13182/PHYSOR22-37699

Preliminary Simulation Results of Peach Bottom Unit 2 Cycles 1 and 2 with MPACT. / Choi, Sooyoung; Ward, Andrew; Graham, Aaron et al.
Proceedings of the International Conference on Physics of Reactors, PHYSOR 2022. American Nuclear Society, 2022. p. 2316-2325 (Proceedings of the International Conference on Physics of Reactors, PHYSOR 2022).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Choi, Sooyoung

AU - Ward, Andrew

AU - Graham, Aaron

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AU - Kochunas, Brendan

AU - Asgari, Mehdi

PY - 2022

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N2 - This paper describes the preliminary results of Peach Bottom 2 (PB2) cycles 1 and 2 analysis by MPACT. MPACT has been recently extended to analyze boiling water reactors (BWRs), and the purpose of this paper is to verify and validate MPACT against the BWR core follow simulation. The computed eigenvalue and the travelling in-core probe (TIP) response are compared to the published measured values. The average cycle errors for keff are 425 and 178 pcm for cycles 1 and 2, respectively. These errors are within the 500 pcm uncertainty. The TIP 3D root means square errors over the cycle are 8.47 and 7.51% for cycles 1 and 2, respectively. The TIP calculation error is also within the 10.8% uncertainty (2σ), which was evaluated by comparing symmetric locations. MPACT also shows a better results in the keff and TIP calculations than the two-step code system TRITON/PARCS. The initial steady-state of the BWR Turbine Trip test 2 benchmark is also simulated. The keff error is -141 pcm, and the axial power error is 3.11%. For this problem, MPACT predicts the reactor parameters with higher accuracy than the commercial reactor design code system CASMO5/SIMULATE5.

AB - This paper describes the preliminary results of Peach Bottom 2 (PB2) cycles 1 and 2 analysis by MPACT. MPACT has been recently extended to analyze boiling water reactors (BWRs), and the purpose of this paper is to verify and validate MPACT against the BWR core follow simulation. The computed eigenvalue and the travelling in-core probe (TIP) response are compared to the published measured values. The average cycle errors for keff are 425 and 178 pcm for cycles 1 and 2, respectively. These errors are within the 500 pcm uncertainty. The TIP 3D root means square errors over the cycle are 8.47 and 7.51% for cycles 1 and 2, respectively. The TIP calculation error is also within the 10.8% uncertainty (2σ), which was evaluated by comparing symmetric locations. MPACT also shows a better results in the keff and TIP calculations than the two-step code system TRITON/PARCS. The initial steady-state of the BWR Turbine Trip test 2 benchmark is also simulated. The keff error is -141 pcm, and the axial power error is 3.11%. For this problem, MPACT predicts the reactor parameters with higher accuracy than the commercial reactor design code system CASMO5/SIMULATE5.

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M3 - Conference contribution

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T3 - Proceedings of the International Conference on Physics of Reactors, PHYSOR 2022

SP - 2316

EP - 2325

BT - Proceedings of the International Conference on Physics of Reactors, PHYSOR 2022

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Choi S, Ward A, Graham A, Collins B, Kochunas B, Asgari M. Preliminary Simulation Results of Peach Bottom Unit 2 Cycles 1 and 2 with MPACT. In Proceedings of the International Conference on Physics of Reactors, PHYSOR 2022. American Nuclear Society. 2022. p. 2316-2325. (Proceedings of the International Conference on Physics of Reactors, PHYSOR 2022). doi: 10.13182/PHYSOR22-37699

Preliminary Simulation Results of Peach Bottom Unit 2 Cycles 1 and 2 with MPACT

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