Emerging risk of autoignition and fire in underground coal storage

J. Sipilä, Pertti Auerkari (Corresponding Author), Anna-Mari Heikkilä, U. Krause

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The risk and prevention of autoignition in underground coal storage facilities are reviewed in the light of the recent incidents of smouldering fires. Also, the opportunities are considered on the efficiency of the alternatives to prevent and extinguish closed-space fires. The complexities in avoiding and extinguishing underground fires are highlighted in the case example, describing the observations and outcome of a smouldering coal fire in the storage. 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 documented cases and the case example suggest that nitrogen injection can be useful for extinguishing controllable fires. Three-phase foams and oxygen-displacing exhaust gases appear preferable against uncontrolled fires, particularly if access to the fire area is limited or impossible. Otherwise, efficient fire extinction during power plant operation can be challenging, as any air ingress tends to feed the fire and results in losses of the extinguishing agent and the heating value of coal. Methods and indicators for detecting and predicting the ignition are discussed, and improvements are suggested to enhance the storage and plant availability.
Original languageEnglish
Pages (from-to)447-457
Number of pages10
JournalJournal of Risk Research
Volume16
Issue number3-4
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

Fingerprint

Coal storage
coal
Fires
heat pump
power plant
Coal
incident
air
efficiency
Spontaneous combustion
Heating
Values
Exhaust gases
Ignition
Foams
Power plants

Keywords

  • Autoignition
  • coal storage
  • emerging risk

Cite this

@article{ae3a62d731ad4770afa955ed31a396db,
title = "Emerging risk of autoignition and fire in underground coal storage",
abstract = "The risk and prevention of autoignition in underground coal storage facilities are reviewed in the light of the recent incidents of smouldering fires. Also, the opportunities are considered on the efficiency of the alternatives to prevent and extinguish closed-space fires. The complexities in avoiding and extinguishing underground fires are highlighted in the case example, describing the observations and outcome of a smouldering coal fire in the storage. 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 documented cases and the case example suggest that nitrogen injection can be useful for extinguishing controllable fires. Three-phase foams and oxygen-displacing exhaust gases appear preferable against uncontrolled fires, particularly if access to the fire area is limited or impossible. Otherwise, efficient fire extinction during power plant operation can be challenging, as any air ingress tends to feed the fire and results in losses of the extinguishing agent and the heating value of coal. Methods and indicators for detecting and predicting the ignition are discussed, and improvements are suggested to enhance the storage and plant availability.",
keywords = "Autoignition, coal storage, emerging risk",
author = "J. Sipil{\"a} and Pertti Auerkari and Anna-Mari Heikkil{\"a} and U. Krause",
year = "2012",
doi = "10.1080/13669877.2012.729525",
language = "English",
volume = "16",
pages = "447--457",
journal = "Journal of Risk Research",
issn = "1366-9877",
publisher = "Routledge",
number = "3-4",

}

Emerging risk of autoignition and fire in underground coal storage. / Sipilä, J.; Auerkari, Pertti (Corresponding Author); Heikkilä, Anna-Mari; Krause, U.

In: Journal of Risk Research, Vol. 16, No. 3-4, 2012, p. 447-457.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Emerging risk of autoignition and fire in underground coal storage

AU - Sipilä, J.

AU - Auerkari, Pertti

AU - Heikkilä, Anna-Mari

AU - Krause, U.

PY - 2012

Y1 - 2012

N2 - The risk and prevention of autoignition in underground coal storage facilities are reviewed in the light of the recent incidents of smouldering fires. Also, the opportunities are considered on the efficiency of the alternatives to prevent and extinguish closed-space fires. The complexities in avoiding and extinguishing underground fires are highlighted in the case example, describing the observations and outcome of a smouldering coal fire in the storage. 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 documented cases and the case example suggest that nitrogen injection can be useful for extinguishing controllable fires. Three-phase foams and oxygen-displacing exhaust gases appear preferable against uncontrolled fires, particularly if access to the fire area is limited or impossible. Otherwise, efficient fire extinction during power plant operation can be challenging, as any air ingress tends to feed the fire and results in losses of the extinguishing agent and the heating value of coal. Methods and indicators for detecting and predicting the ignition are discussed, and improvements are suggested to enhance the storage and plant availability.

AB - The risk and prevention of autoignition in underground coal storage facilities are reviewed in the light of the recent incidents of smouldering fires. Also, the opportunities are considered on the efficiency of the alternatives to prevent and extinguish closed-space fires. The complexities in avoiding and extinguishing underground fires are highlighted in the case example, describing the observations and outcome of a smouldering coal fire in the storage. 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 documented cases and the case example suggest that nitrogen injection can be useful for extinguishing controllable fires. Three-phase foams and oxygen-displacing exhaust gases appear preferable against uncontrolled fires, particularly if access to the fire area is limited or impossible. Otherwise, efficient fire extinction during power plant operation can be challenging, as any air ingress tends to feed the fire and results in losses of the extinguishing agent and the heating value of coal. Methods and indicators for detecting and predicting the ignition are discussed, and improvements are suggested to enhance the storage and plant availability.

KW - Autoignition

KW - coal storage

KW - emerging risk

U2 - 10.1080/13669877.2012.729525

DO - 10.1080/13669877.2012.729525

M3 - Article

VL - 16

SP - 447

EP - 457

JO - Journal of Risk Research

JF - Journal of Risk Research

SN - 1366-9877

IS - 3-4

ER -