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2019 | OriginalPaper | Buchkapitel

Lengthy Power Interruptions and Pot Line Shutdowns

verfasst von : Alton Tabereaux, Stephen Lindsay

Erschienen in: Light Metals 2019

Verlag: Springer International Publishing

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Abstract

Prolonged power outages are the major cause of inadvertent pot line shut downs in the primary aluminum industry (Kjar and Keniry in Reducing the impact of power supply interruption on potroom operations, 2007; Tabereaux in Light metals, pp. 1039–1044, 2010; Øye and Sørlie in Aluminium International Today, 2011; Dupuis and Tabereaux in Modeling cathode cooling after power shutdown, vol 1–2, 2012 [14]). The rate of incidence of such events has been high over this past decade and in recent years it appears to be accelerating. The design of high amperage cells to be able to rapidly shed heat during operations is an emerging factor of risk when compared to older cell designs. Each event of an inadvertent shut down can cost tens of millions of dollars, most of this is from lost production. In this paper the authors explore the variety of root causes that have been behind extended power interruptions that have led to an inadvertent shut down of a pot line(s) and the recovery factors that may be involved with such an event. This will include an exploration of the typical time line that is involved from shut down through the restart of lost capacity.

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Literatur
1.
Zurück zum Zitat A.R. Kjar, J. Keniry, “Reducing the Impact of Power Supply Interruption on Potroom Operations”, 9th AASTC, Nov. 4–9, 2007. A.R. Kjar, J. Keniry, “Reducing the Impact of Power Supply Interruption on Potroom Operations”, 9th AASTC, Nov. 4–9, 2007.
2.
Zurück zum Zitat A.T. Tabereaux, “Loss in Cathode Life Resulting from the Shutdown and Restart of Potlines at Aluminium Smelters”. Light Metals 2010, pp. 1039–1044. A.T. Tabereaux, “Loss in Cathode Life Resulting from the Shutdown and Restart of Potlines at Aluminium Smelters”. Light Metals 2010, pp. 1039–1044.
3.
Zurück zum Zitat H. Øye, M. Sørlie, “Power failure, restart and repair”, Aluminium International Today, 2011. H. Øye, M. Sørlie, “Power failure, restart and repair”, Aluminium International Today, 2011.
4.
Zurück zum Zitat M. Dupuis, A. Tabereaux, “Modeling cathode cooling after power shutdown”, Aluminium 2012, Vol 1–2. M. Dupuis, A. Tabereaux, “Modeling cathode cooling after power shutdown”, Aluminium 2012, Vol 1–2.
5.
Zurück zum Zitat T. Alcorn, A. Tabereaux, M. Sørlie, S. Lindsay, “TMS Short Course Shutdown and Restart of Potlines”, TMS Annual Meeting, February 2010. T. Alcorn, A. Tabereaux, M. Sørlie, S. Lindsay, “TMS Short Course Shutdown and Restart of Potlines”, TMS Annual Meeting, February 2010.
6.
Zurück zum Zitat D.J. Williams, G. Honan, A.R. Kjar, K.G. Martin, “Reaction of Basement Concreted with Molten Metals at Boyne Island Smelters (Thermite Fires)”, Light Metals 1987, pp. 703–708. D.J. Williams, G. Honan, A.R. Kjar, K.G. Martin, “Reaction of Basement Concreted with Molten Metals at Boyne Island Smelters (Thermite Fires)”, Light Metals 1987, pp. 703–708.
7.
Zurück zum Zitat A. Shayan, P Gibbs, and K. G. Martin, “Decomposition of a concrete floor and ignition of gaseous products due to spillage of molten aluminium”, Magazine of Concrete Research, Vol 39, Issue 141, December 1987, pp. 221–228.CrossRef A. Shayan, P Gibbs, and K. G. Martin, “Decomposition of a concrete floor and ignition of gaseous products due to spillage of molten aluminium”, Magazine of Concrete Research, Vol 39, Issue 141, December 1987, pp. 221–228.CrossRef
Metadaten
Titel
Lengthy Power Interruptions and Pot Line Shutdowns
verfasst von
Alton Tabereaux
Stephen Lindsay
Copyright-Jahr
2019
DOI
https://doi.org/10.1007/978-3-030-05864-7_108

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