Alcântara, Daniela Pereira de Melo

Batista, Antonio Carlos

Batista, Pedro Moreira

Beutling, Alexandre

Jacobs, Rudolfo de Cerqueira

Kovalsyki, Bruna

English

Portal de Revistas do ICMBio (Instituto Chico Mendes de Conservação da Biodiversidade)

Evaluation of the efficiency 62 
Instituto Chico Mendes de Conservação da Biodiversidade Biodiversidade Brasileira, 10(1): 62, 2020 
 
 
 
Evaluation of the efficiency of a long term retardant in laboratory 
 
 
Rudolfo de Cerqueira Jacobs¹*, Antonio Carlos Batista¹, Bruna Kovalsyki¹, Alexandre Beutling², 
Daniela Pereira de Melo Alcântara³ and Pedro Moreira Baptista³.  
 
 
1 Postgraduate Program in Forest Engineering - Universidade Federal do Paraná (UFPR), Curitiba, Brazil 
2 Universidade Federal de Mato Grosso do Sul (UFMS), Chapadão do Sul, Brazil 
3 Undergraduate Degree in Forest Engineering (UFPR), Curitiba, Brazil 
*e-mail contact: rudolfo.jacobs@ufpr.br  
 
 
 
 
ABSTRACT – Fire retardants are chemical agents used to reduce or eliminate combustion 
of a flammable material, widely used to prevent and combat forest fires in countries such 
as United States, Spain and Australia. In Brazil its use is incipient and needs advances in 
the research and regulatory sectors. This work aimed to evaluate different concentrations 
of a long term retardant on development phase, using the Effective efficiency index (IEE) 
methodology. The tests were conducted in a combustion chamber at the Forest Fires 
Laboratory in the Universidade Federal do Paraná (UFPR). The experiment consisted of 4 
treatments (concentrations of 5, 10, 15 and 20%) and water in 5 repetitions each. The fuel 
material used was tifton hay (Cynodon spp.) in proportion of 1.0 kg / m², forming a layer 
8.0 cm thick on a surface of 150.0 cm long by 75.0 cm width (parcel). The product was 
applied in the final third of the parcel. The plots were burned lengthwise and, as the fire 
spread, the flame height (hc in cm) and the fire propagation velocity (r, in ms-1) were 
recorded every 10.0 cm of advance. The data were submitted to ANOVA statistical analysis 
and cluster analysis, performed using the software Statgraphics Centurion. The fire 
behavior parameters were: hc: 64.0 cm and r: 0.0070 m.s-1 as reference values, hc: 28.0 
cm and r: 0.0026 m.s-1 for 5% concentration; hc: 21.2 cm and r: 0.0019 m.s-1 for 10% 
concentration; hc: 16.8 cm and r: 0.0023 m.s-1 to 15% concentration and hc: 29.0 cm and 
r: 0.0028 m.s-1 to 20%; hc: 30, 3 cm and r: 0,0031 m.s-1 for water. There was a statistically 
significant difference between treatments and, through cluster analysis, it was possible to 
observe two groupings: a) 5 and 20%; and b) 10 and 15%. However, according to the IEE 
the efficiency rates for each concentration were: 5%: 43,35; 10%: 49.29; 15%: 50.84; 20%: 
42.76 and 30,87 for water. According to the assumptions of the IEE method, the only 
approved concentration, with restrictions on use, was 15%, while the others were 
disapproved. 
 
Keywords: fire retardants, fires, efficiency index. 
 


Evaluation of the efficiency of a long term retardant in laboratory

https://www.icmbio.gov.br/revistaeletronica/index.php/BioBR/article/download/1543/1054

Evaluation of the efficiency of a long term retardant in laboratory

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