3.4 - Operational aspects of experimental liquid metal facilities

Research output: Contribution to report/book/conference proceedingsChapter

Standard

3.4 - Operational aspects of experimental liquid metal facilities. / Kennedy, Graham; Di Piazza, Ivan; Bassini, Serena.

Thermal Hydraulics Aspects of Liquid Metal Cooled Nuclear Reactors. WP - Woodhead Publishing, 2018. p. 127-145.

Research output: Contribution to report/book/conference proceedingsChapter

Harvard

Kennedy, G, Di Piazza, I & Bassini, S 2018, 3.4 - Operational aspects of experimental liquid metal facilities. in Thermal Hydraulics Aspects of Liquid Metal Cooled Nuclear Reactors. WP - Woodhead Publishing, pp. 127-145. https://doi.org/10.1016/B978-0-08-101980-1.00014-4

APA

Kennedy, G., Di Piazza, I., & Bassini, S. (2018). 3.4 - Operational aspects of experimental liquid metal facilities. In Thermal Hydraulics Aspects of Liquid Metal Cooled Nuclear Reactors (pp. 127-145). WP - Woodhead Publishing. https://doi.org/10.1016/B978-0-08-101980-1.00014-4

Vancouver

Kennedy G, Di Piazza I, Bassini S. 3.4 - Operational aspects of experimental liquid metal facilities. In Thermal Hydraulics Aspects of Liquid Metal Cooled Nuclear Reactors. WP - Woodhead Publishing. 2018. p. 127-145 https://doi.org/10.1016/B978-0-08-101980-1.00014-4

Author

Kennedy, Graham ; Di Piazza, Ivan ; Bassini, Serena. / 3.4 - Operational aspects of experimental liquid metal facilities. Thermal Hydraulics Aspects of Liquid Metal Cooled Nuclear Reactors. WP - Woodhead Publishing, 2018. pp. 127-145

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@inbook{ea1c8d64ad634d8694735bf768d68284,
title = "3.4 - Operational aspects of experimental liquid metal facilities",
abstract = "Generally, the operation of liquid-metal facilities and the associated componentsshould not be vastly different from conventional systems operation. However, asintroduced in the beginning of this chapter, the relatively high temperatures and properties of liquid metals present some unique operational and safety aspects. This section therefore intends to inform new and current users of liquid-metal facilities about some typical but unique aspects of liquid-metal facility operation, previously experienced on existing facilities. Following good operational practices is important for the safety of personnel; protection of experimental infrastructure investments; and producing high-quality, representative, and repeatable experimental data.While not necessarily specific to liquid-metal facilities, it is customary in manysystem engineering processes to develop a functional performance specification(FPS). Such a functional specification is not intended to describe the details of thesystem implementation, but rather describes how the system should function during normal operation and during off-design scenarios. The FPS also defines the proposed interaction between the user and the software system and in turn defines or forms part of the operational procedures.Defining so-called system states and modes is a commonly used method to describe the functionality of a system. Fig. 3.4.1 illustrates a very simplified mode and state flowchart that could be applied to a liquid-metal facility. With reference to the example state flow diagram in Fig. 3.4.1, the typical generic states are identified and tabulated in Table 3.4.1.Using a state and mode approach, as shown in Fig. 3.4.1, allows the functionalrequirements to be uniquely defined for each state. For these states to exist independently, there must also be transitions (sequences) between these states. For example, filling, draining, purging (gas conditioning), coolant circulation start-up and shutdown, emergency shutdown (e.g., in case of a leak), heating, and cooling are typical transition sequences that could be applicable in experimental liquid-metal facilities. This system approach also allows the system owners or designers to define the requirements for a transition sequence to be triggered, that is, transition set-point triggers and interlocks. Depending on the system complexity and the choice of hardware/software (e.g., manual valves as opposed to actuated valves), these triggers can be manual or automated or a combination of both. Manual triggers will require user input in the programmable logic controller (PLC). Automated triggers will be initiated by feedback from instrumentation with appropriate set points.",
keywords = "Liquid-metal-cooled reactors, Thermal Hydraulics, Challenges",
author = "Graham Kennedy and {Di Piazza}, Ivan and Serena Bassini",
note = "Score=10",
year = "2018",
month = "12",
day = "5",
doi = "10.1016/B978-0-08-101980-1.00014-4",
language = "English",
isbn = "978-0-08-101980-1",
pages = "127--145",
booktitle = "Thermal Hydraulics Aspects of Liquid Metal Cooled Nuclear Reactors",
publisher = "WP - Woodhead Publishing",

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RIS - Download

TY - CHAP

T1 - 3.4 - Operational aspects of experimental liquid metal facilities

AU - Kennedy, Graham

AU - Di Piazza, Ivan

AU - Bassini, Serena

N1 - Score=10

PY - 2018/12/5

Y1 - 2018/12/5

N2 - Generally, the operation of liquid-metal facilities and the associated componentsshould not be vastly different from conventional systems operation. However, asintroduced in the beginning of this chapter, the relatively high temperatures and properties of liquid metals present some unique operational and safety aspects. This section therefore intends to inform new and current users of liquid-metal facilities about some typical but unique aspects of liquid-metal facility operation, previously experienced on existing facilities. Following good operational practices is important for the safety of personnel; protection of experimental infrastructure investments; and producing high-quality, representative, and repeatable experimental data.While not necessarily specific to liquid-metal facilities, it is customary in manysystem engineering processes to develop a functional performance specification(FPS). Such a functional specification is not intended to describe the details of thesystem implementation, but rather describes how the system should function during normal operation and during off-design scenarios. The FPS also defines the proposed interaction between the user and the software system and in turn defines or forms part of the operational procedures.Defining so-called system states and modes is a commonly used method to describe the functionality of a system. Fig. 3.4.1 illustrates a very simplified mode and state flowchart that could be applied to a liquid-metal facility. With reference to the example state flow diagram in Fig. 3.4.1, the typical generic states are identified and tabulated in Table 3.4.1.Using a state and mode approach, as shown in Fig. 3.4.1, allows the functionalrequirements to be uniquely defined for each state. For these states to exist independently, there must also be transitions (sequences) between these states. For example, filling, draining, purging (gas conditioning), coolant circulation start-up and shutdown, emergency shutdown (e.g., in case of a leak), heating, and cooling are typical transition sequences that could be applicable in experimental liquid-metal facilities. This system approach also allows the system owners or designers to define the requirements for a transition sequence to be triggered, that is, transition set-point triggers and interlocks. Depending on the system complexity and the choice of hardware/software (e.g., manual valves as opposed to actuated valves), these triggers can be manual or automated or a combination of both. Manual triggers will require user input in the programmable logic controller (PLC). Automated triggers will be initiated by feedback from instrumentation with appropriate set points.

AB - Generally, the operation of liquid-metal facilities and the associated componentsshould not be vastly different from conventional systems operation. However, asintroduced in the beginning of this chapter, the relatively high temperatures and properties of liquid metals present some unique operational and safety aspects. This section therefore intends to inform new and current users of liquid-metal facilities about some typical but unique aspects of liquid-metal facility operation, previously experienced on existing facilities. Following good operational practices is important for the safety of personnel; protection of experimental infrastructure investments; and producing high-quality, representative, and repeatable experimental data.While not necessarily specific to liquid-metal facilities, it is customary in manysystem engineering processes to develop a functional performance specification(FPS). Such a functional specification is not intended to describe the details of thesystem implementation, but rather describes how the system should function during normal operation and during off-design scenarios. The FPS also defines the proposed interaction between the user and the software system and in turn defines or forms part of the operational procedures.Defining so-called system states and modes is a commonly used method to describe the functionality of a system. Fig. 3.4.1 illustrates a very simplified mode and state flowchart that could be applied to a liquid-metal facility. With reference to the example state flow diagram in Fig. 3.4.1, the typical generic states are identified and tabulated in Table 3.4.1.Using a state and mode approach, as shown in Fig. 3.4.1, allows the functionalrequirements to be uniquely defined for each state. For these states to exist independently, there must also be transitions (sequences) between these states. For example, filling, draining, purging (gas conditioning), coolant circulation start-up and shutdown, emergency shutdown (e.g., in case of a leak), heating, and cooling are typical transition sequences that could be applicable in experimental liquid-metal facilities. This system approach also allows the system owners or designers to define the requirements for a transition sequence to be triggered, that is, transition set-point triggers and interlocks. Depending on the system complexity and the choice of hardware/software (e.g., manual valves as opposed to actuated valves), these triggers can be manual or automated or a combination of both. Manual triggers will require user input in the programmable logic controller (PLC). Automated triggers will be initiated by feedback from instrumentation with appropriate set points.

KW - Liquid-metal-cooled reactors

KW - Thermal Hydraulics

KW - Challenges

UR - https://ecm.sckcen.be/OTCS/llisapi.dll/open/34949625

U2 - 10.1016/B978-0-08-101980-1.00014-4

DO - 10.1016/B978-0-08-101980-1.00014-4

M3 - Chapter

SN - 978-0-08-101980-1

SP - 127

EP - 145

BT - Thermal Hydraulics Aspects of Liquid Metal Cooled Nuclear Reactors

PB - WP - Woodhead Publishing

ER -

ID: 6895545