Occupational Noise Exposure in Grain-Grinding Shops and Its Impact on Hearing Level of Workers in Bukuru, Jos South, Plateau State
Author(s):
Affiong Bassey Nsa, Param Iliya Wabba
Journal:
Academians Journal of Natural and Biosciences Studies
Abstract
This research, backed by TETFund, dived into the pressing issue of occupational noise exposure in grain-grinding shops and how it negatively affects the hearing health of workers in Bukuru, located in the Jos South Local Government Area of Plateau State, Nigeria. In many urban and peri-urban areas of Nigeria, grain-grinding shops are essential for food processing and local economies. Unfortunately, these shops often overlook occupational health standards, particularly when it comes to the dangers of prolonged exposure to loud mechanical noise. The lack of protective gear and awareness about the health risks associated with noise creates a serious threat to the well-being of the workers. This study adopted population size of 25 workers. The study employed a descriptive cross-sectional design, using quantitative methods like audiometric assessments, noise level measurements, and structured questionnaires given to 25 workers from selected grain-grinding shops in Bukuru. This study adopted multiple linear regression analysis. The study shows that noise levels in grain-grinding shops substantially influence workers’ hearing abilities. High noise intensity demonstrated a significant positive effect, indicating that as noise exposure increases, the risk of hearing impairment becomes more pronounced. However, the duration of exposure both short and long-term showed a positive but statistically insignificant effect, suggesting that intensity of noise is a more critical determinant than exposure length alone. Compliance with safety standards had a significant positive effect, affirming that proper safety practices can meaningfully protect workers’ hearing. Similarly, the implementation of risk-mitigation strategies significantly improved hearing-related outcomes. In contrast, the socioeconomic effects of noise exposure were positive but not significant, implying that while noise risks may impact workers’ quality of life, their influence on measured hearing outcomes is limited. Overall, the findings emphasize the importance of enforcing safety standards and noise-control measures to safeguard hearing health in grain-grinding environments. Install noise-dampening equipment (silencers, acoustic covers) on grinding machines. Enforce rotational work schedules to limit the time each worker spends near high-noise machines. Mandate the use of certified hearing protection devices (earplugs or earmuffs) for all workers. Provide quarterly training on noise hazards, proper use of personal protective equipment (PPE), and early signs of hearing loss. Introduce sound-absorbing materials (rubber mats, acoustic panels) within grinding shops. Offer health insurance or welfare support for workers experiencing noise-related issues.
Keywords:
Occupational Noise Exposure, Noise level, Noise intensity, Hearing abilities