Load-following operation and transient behavior of molten salt demonstration reactor

Vikram Singh; Alexander M. Wheeler; Belle R. Upadhyaya; Ondřej Chvála; M. Scott Greenwood

Load-following operation and transient behavior of molten salt demonstration reactor

Vikram Singh, Alexander M. Wheeler, Belle R. Upadhyaya, Ondřej Chvála, M. Scott Greenwood

Advanced Reactor Systems

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

Abstract

Preliminary results from a nonlinear dynamic model of the Molten Salt Demonstration Reactor (MSDR) plant are presented. This model is coupled to an integral economizer Once-Through Steam Generator (OTSG) model with variable boiling length to simulate operation at different power levels. The reactivity effect of Xe-135 is also integrated to investigate open-loop load-following operation. Simulation results show that the reactor model is stable for the investigated reactivity perturbations. A load-following excursion is simulated by varying the feedwater flow rate through the steam generator. Results show that the MSDR can follow load demand in a stable manner through temperature-based reactivity feedbacks alone without requiring operator input. Future work involves development of instrumentation systems and control strategies to achieve near autonomous plant operation.

Original language	English
Title of host publication	11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019
Publisher	American Nuclear Society
Pages	199-208
Number of pages	10
ISBN (Electronic)	9780894487835
State	Published - 2019
Event	11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019 - Orlando, United States Duration: Feb 9 2019 → Feb 14 2019

Publication series

Name	11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019

Conference

Conference	11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019
Country/Territory	United States
City	Orlando
Period	02/9/19 → 02/14/19

Funding

The authors would like to thank the Advanced Reactor Technology’s Molten Salt Reactor program, under the U.S. Department of Energy Office of Nuclear Energy, for supporting this work.

Funders	Funder number
Office of Nuclear Energy

Keywords

Control strategy
Dynamic model
Load-following
MSDR
OTSG

Cite this

Singh, V., Wheeler, A. M., Upadhyaya, B. R., Chvála, O., & Scott Greenwood, M. (2019). Load-following operation and transient behavior of molten salt demonstration reactor. In 11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019 (pp. 199-208). (11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019). American Nuclear Society.

Singh, Vikram ; Wheeler, Alexander M. ; Upadhyaya, Belle R. et al. / Load-following operation and transient behavior of molten salt demonstration reactor. 11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019. American Nuclear Society, 2019. pp. 199-208 (11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019).

@inproceedings{4b0313c555a44c6cafdca659f43796ba,

title = "Load-following operation and transient behavior of molten salt demonstration reactor",

abstract = "Preliminary results from a nonlinear dynamic model of the Molten Salt Demonstration Reactor (MSDR) plant are presented. This model is coupled to an integral economizer Once-Through Steam Generator (OTSG) model with variable boiling length to simulate operation at different power levels. The reactivity effect of Xe-135 is also integrated to investigate open-loop load-following operation. Simulation results show that the reactor model is stable for the investigated reactivity perturbations. A load-following excursion is simulated by varying the feedwater flow rate through the steam generator. Results show that the MSDR can follow load demand in a stable manner through temperature-based reactivity feedbacks alone without requiring operator input. Future work involves development of instrumentation systems and control strategies to achieve near autonomous plant operation.",

keywords = "Control strategy, Dynamic model, Load-following, MSDR, OTSG",

author = "Vikram Singh and Wheeler, {Alexander M.} and Upadhyaya, {Belle R.} and Ond{\v r}ej Chv{\'a}la and {Scott Greenwood}, M.",

note = "Publisher Copyright: {\textcopyright} 2018 Westinghouse Electric Company LLC All Rights Reserved; 11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019 ; Conference date: 09-02-2019 Through 14-02-2019",

year = "2019",

language = "English",

series = "11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019",

publisher = "American Nuclear Society",

pages = "199--208",

booktitle = "11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019",

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Singh, V, Wheeler, AM, Upadhyaya, BR, Chvála, O & Scott Greenwood, M 2019, Load-following operation and transient behavior of molten salt demonstration reactor. in 11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019. 11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019, American Nuclear Society, pp. 199-208, 11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019, Orlando, United States, 02/9/19.

Load-following operation and transient behavior of molten salt demonstration reactor. / Singh, Vikram; Wheeler, Alexander M.; Upadhyaya, Belle R. et al.
11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019. American Nuclear Society, 2019. p. 199-208 (11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019).

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

TY - GEN

T1 - Load-following operation and transient behavior of molten salt demonstration reactor

AU - Singh, Vikram

AU - Wheeler, Alexander M.

AU - Upadhyaya, Belle R.

AU - Chvála, Ondřej

AU - Scott Greenwood, M.

PY - 2019

Y1 - 2019

N2 - Preliminary results from a nonlinear dynamic model of the Molten Salt Demonstration Reactor (MSDR) plant are presented. This model is coupled to an integral economizer Once-Through Steam Generator (OTSG) model with variable boiling length to simulate operation at different power levels. The reactivity effect of Xe-135 is also integrated to investigate open-loop load-following operation. Simulation results show that the reactor model is stable for the investigated reactivity perturbations. A load-following excursion is simulated by varying the feedwater flow rate through the steam generator. Results show that the MSDR can follow load demand in a stable manner through temperature-based reactivity feedbacks alone without requiring operator input. Future work involves development of instrumentation systems and control strategies to achieve near autonomous plant operation.

AB - Preliminary results from a nonlinear dynamic model of the Molten Salt Demonstration Reactor (MSDR) plant are presented. This model is coupled to an integral economizer Once-Through Steam Generator (OTSG) model with variable boiling length to simulate operation at different power levels. The reactivity effect of Xe-135 is also integrated to investigate open-loop load-following operation. Simulation results show that the reactor model is stable for the investigated reactivity perturbations. A load-following excursion is simulated by varying the feedwater flow rate through the steam generator. Results show that the MSDR can follow load demand in a stable manner through temperature-based reactivity feedbacks alone without requiring operator input. Future work involves development of instrumentation systems and control strategies to achieve near autonomous plant operation.

KW - Control strategy

KW - Dynamic model

KW - Load-following

KW - MSDR

KW - OTSG

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M3 - Conference contribution

AN - SCOPUS:85070940091

T3 - 11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019

SP - 199

EP - 208

BT - 11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019

PB - American Nuclear Society

T2 - 11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019

Y2 - 9 February 2019 through 14 February 2019

ER -

Singh V, Wheeler AM, Upadhyaya BR, Chvála O, Scott Greenwood M. Load-following operation and transient behavior of molten salt demonstration reactor. In 11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019. American Nuclear Society. 2019. p. 199-208. (11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, NPIC and HMIT 2019).

Load-following operation and transient behavior of molten salt demonstration reactor

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Keywords

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