Workers’ exposure to occupational heat during manual coffee harvesting

Ramirio, Lucas Deleon; Sabino, Paulo Henrique de Siqueira; Oliveira Júnior, Geraldo Gomes de; Silva, Adriano Bortolotti da

doi:10.1590/0103-8478cr20200556

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Rural enginering • Cienc. Rural 51 (11) • 2021 • https://doi.org/10.1590/0103-8478cr20200556 copy

Workers’ exposure to occupational heat during manual coffee harvesting

Exposição de trabalhadores ao calor ocupacional durante a colheita manual do cafeeiro

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT:

This study evaluated the occupational exposure of workers to heat during manual harvesting of coffee. The case study was conducted between May to August. Occupational heat in coffee plantations was evaluated using the Wet Bulb Globe Temperature (WBGT) method and the metabolic rate. The WBGT was obtained using the TGD 400 thermal stress meter. The determined WBGT values were compared to two standards: the Occupational Hygiene Standard (NHO) 06 and Regulatory Norm (NR) 09. For acclimatized workers, the exposure limit was not exceeded at any time during the evaluated period. Fornon-acclimatized workers, the exposure limit was not exceeded only in July.

Key words:
acclimatization; coffee; occupational heat; WBGT

Universidade Federal de Santa Maria Universidade Federal de Santa Maria, Centro de Ciências Rurais , 97105-900 Santa Maria RS Brazil , Tel.: +55 55 3220-8698 , Fax: +55 55 3220-8695 - Santa Maria - RS - Brazil
E-mail: cienciarural@mail.ufsm.br

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[1] E-mail: lucas.ramirio@ifsuldeminas.edu.br.*Corresponding author

	May	June	July	August
Time	WBGT °C^*	WBGT °C^*	WBGT °C^*	WBGT °C^*
7:00 to 7:59am	16.04 ± 0.22 A d	16.83 ± 1.08 A c	13.56 ± 0.53B d	15.38 ± 0.29 A d
8:00 to 8:59 am	19.00 ± 0.32 A c	19.9 ± 1.04 A b	17.42 ± 0.45 B c	18.02 ± 0.57 B c
9:00 to 9:59 am	20.45 ± 0.29 A c	21.26 ± 0.66 A a	19.53 ± 0.21 A b	19.61 ± 0.5 A b
10:00 to 10:59 am	21.53 ± 0.3 A b	22.56 ± 0.65 A a	20.59 ± 0.49 A b	20.65 ± 0.63 A b
11:00 to 11:59 am	22.85 ± 0.27 A a	22.87 ± 0.73 A a	21.70 ± 0.38 A a	21.81 ± 0.66 A a
12:00 to 12:59 pm	23.53 ± 0.34 A a	23.35 ± 1.35 A a	21.96 ± 0.52 A a	22.29 ± 0.63 A a
1:00 to 1:59 pm	23.78 ± 0.56 A a	23.69 ± 1.62 A a	21.87 ± 0.39 A a	22.69 ± 0.62 A a
2:00 to 2:59 pm	23.61 ± 0.11 A a	22.97 ± 1.75 A a	21.25 ± 0.74 B a	22.49 ± 0.75 A a
3:00 to 3:59 pm	19.59 ± 0.32 A c	20.54 ± 0.85 A a	21.25 ± 0.52 A a	21.74 ± 0.66 A a