Fire incidents in underground coal storage

Juha Sipilä, Pertti Auerkari

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

Autoignition of coal in underground storage facilities is reviewed in the light of recent incidents of smouldering fires. The opportunities to prevent and extinguish closed-space fires are also considered considering the efficiency of the available alternatives. The challenges of such fires are highlighted by an example case, describing the observations and outcome of a smouldering coal storage fire. The principles of self-heating and most critical factors in spontaneous combustion such as the condition and quality of coal are fairly well known, but usually only provide partial help in fire prevention. The experience suggests that nitrogen injection can be useful for extinguishing controllable fires, while more extensive measures may be needed against uncontrolled fires. In general, efficient fire extinction during plant operation can be challenging, as any air ingress tends to feed the fire. Methods and indicators for predicting and detecting the ignition are discussed, and improvements are suggested to enhance the storage and plant availability. Also, new experience on dealing with frozen coal is discussed in brief.
Original languageEnglish
Title of host publicationBaltica VIII
Subtitle of host publicationLife Management and Maintenance for Power Plants
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages128-142
Volume2
ISBN (Electronic)978-951-38-7594-7
ISBN (Print)978-951-38-7593-2
Publication statusPublished - 2010
MoE publication typeB3 Non-refereed article in conference proceedings
EventBALTICA VIII - International Conference on Life Management and Maintenance for Power Plants - Helsinki-Stockholm, Finland
Duration: 18 May 201020 May 2010

Publication series

SeriesVTT Symposium
Number265
ISSN0357-9387

Conference

ConferenceBALTICA VIII - International Conference on Life Management and Maintenance for Power Plants
CountryFinland
CityHelsinki-Stockholm
Period18/05/1020/05/10

Fingerprint

coal
underground storage
combustion
extinction
heating
nitrogen
air

Cite this

Sipilä, J., & Auerkari, P. (2010). Fire incidents in underground coal storage. In Baltica VIII: Life Management and Maintenance for Power Plants (Vol. 2, pp. 128-142). Espoo: VTT Technical Research Centre of Finland. VTT Symposium, No. 265
Sipilä, Juha ; Auerkari, Pertti. / Fire incidents in underground coal storage. Baltica VIII: Life Management and Maintenance for Power Plants. Vol. 2 Espoo : VTT Technical Research Centre of Finland, 2010. pp. 128-142 (VTT Symposium; No. 265).
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Sipilä, J & Auerkari, P 2010, Fire incidents in underground coal storage. in Baltica VIII: Life Management and Maintenance for Power Plants. vol. 2, VTT Technical Research Centre of Finland, Espoo, VTT Symposium, no. 265, pp. 128-142, BALTICA VIII - International Conference on Life Management and Maintenance for Power Plants, Helsinki-Stockholm, Finland, 18/05/10.

Fire incidents in underground coal storage. / Sipilä, Juha; Auerkari, Pertti.

Baltica VIII: Life Management and Maintenance for Power Plants. Vol. 2 Espoo : VTT Technical Research Centre of Finland, 2010. p. 128-142 (VTT Symposium; No. 265).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

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AU - Sipilä, Juha

AU - Auerkari, Pertti

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N2 - Autoignition of coal in underground storage facilities is reviewed in the light of recent incidents of smouldering fires. The opportunities to prevent and extinguish closed-space fires are also considered considering the efficiency of the available alternatives. The challenges of such fires are highlighted by an example case, describing the observations and outcome of a smouldering coal storage fire. The principles of self-heating and most critical factors in spontaneous combustion such as the condition and quality of coal are fairly well known, but usually only provide partial help in fire prevention. The experience suggests that nitrogen injection can be useful for extinguishing controllable fires, while more extensive measures may be needed against uncontrolled fires. In general, efficient fire extinction during plant operation can be challenging, as any air ingress tends to feed the fire. Methods and indicators for predicting and detecting the ignition are discussed, and improvements are suggested to enhance the storage and plant availability. Also, new experience on dealing with frozen coal is discussed in brief.

AB - Autoignition of coal in underground storage facilities is reviewed in the light of recent incidents of smouldering fires. The opportunities to prevent and extinguish closed-space fires are also considered considering the efficiency of the available alternatives. The challenges of such fires are highlighted by an example case, describing the observations and outcome of a smouldering coal storage fire. The principles of self-heating and most critical factors in spontaneous combustion such as the condition and quality of coal are fairly well known, but usually only provide partial help in fire prevention. The experience suggests that nitrogen injection can be useful for extinguishing controllable fires, while more extensive measures may be needed against uncontrolled fires. In general, efficient fire extinction during plant operation can be challenging, as any air ingress tends to feed the fire. Methods and indicators for predicting and detecting the ignition are discussed, and improvements are suggested to enhance the storage and plant availability. Also, new experience on dealing with frozen coal is discussed in brief.

M3 - Conference article in proceedings

SN - 978-951-38-7593-2

VL - 2

T3 - VTT Symposium

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BT - Baltica VIII

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Sipilä J, Auerkari P. Fire incidents in underground coal storage. In Baltica VIII: Life Management and Maintenance for Power Plants. Vol. 2. Espoo: VTT Technical Research Centre of Finland. 2010. p. 128-142. (VTT Symposium; No. 265).