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Waste Management & Research
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Landfill Fires in Finland

Matti Ettala

Ettala & Rossi Avoin yhtiö, Kalevantie 1 E, SF-15870 Hollola, Finland

Päivi Rahkonen

Ettala & Rossi Avoin yhtiö, Kalevantie 1 E, SF-15870 Hollola, Finland

Esko Rossi

Ettala & Rossi Avoin yhtiö, Kalevantie 1 E, SF-15870 Hollola, Finland

Johan Mangs

VTT Building Technology, Fire Technology, P.O. Box 1803, SF-02044 VTT, Finland

Olavi Keski-Rahkonen

VTT Building Technology, Fire Technology, P.O. Box 1803, SF-02044 VTT, Finland

On average, there were 633 sanitary landfills in operation in 1990-92 in Finland. Annually, 380 landfill fires occurred, one-quarter of which were deep fires. The total amount of waste burnt in landfill fires was estimated to be 84,000 tonnes year-1. Unsufficient covering and compacting, ash disposal and deliberate fire starting were reported to be the most typical reasons for waste ignition. The most severe deep fires lasted for 2 months. A 10 m high, 35,000 m3 large experimental bank of waste was built, instrumented and set on fire from a 7 m deep well located at the centre of the area. Wood was burnt in this ignition well to produce glowing embers, which were covered with waste and soil layers. No spread of fire was detected after covering the ignition well. However, the fire was not extinguished by covering but remained smouldering throughout the experiment. To extinguish the fire, it was necessary to dig up the smouldering fire and cool it. © 1996 ISWA

Key Words: Landfill • risk • fire • smouldering • extinguishing • Finland.

Waste Management & Research, Vol. 14, No. 4, 377-384 (1996)
DOI: 10.1177/0734242X9601400405
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