The study assesses noise hazards in agri-based industrial workplaces in Punjab state of India. Guidelines of Canadian Centre for Occupational Health and Safety were employed to generate the primary data on noise survey. Potential noise hazardous areas within 40 agri-based industrial units (flour units/wheat milling units) were identified through constructing the contour map. A layout mentioning the locations of various machines and workers in the units were prepared. Data on output capacity, size of power source, maintenance condition of machines and workroom configurations were solicited through the personal interview of the owner of the units. Semi-structured interview schedule was prepared to generate the primary data. Average temperature, relative humidity and air velocity in the working rooms were also recorded. A specific grid (2 m × 2 m) was made on the layout based on the size of unit to get representative data for unit. A sound-level meter was also placed to record the noise levels. It was observed that the normal working hours (h) of flour units were varied from 8 to 12 h. The highest sound level was generated at power transmission unit varying in the range of 92.2 dBA and 98.5 dBA. The average sound intensity was recorded as 95.1 dBA which was the highest noise intensity. For ensuring the safe working environment, noise control devices should be provided to all workers in the units and need to be enforced. The machines should be regularly maintained to reduce warbling of components which increase noise and employers should consider reduction in working period to minimize noise exposure period. Personal protective measures for the safety of workers are also needed.

该研究评估了印度旁遮普邦以农业为基础的工业场所的噪声危害。使用加拿大职业健康与安全中心的指南来生成噪声调查的主要数据。通过构建等高线图，确定了40个以农业为基础的工业单位（面粉单位/小麦粉磨单位）内潜在的噪声危险区域。准备了一个布局图，其中提到了单元中各种机器和工人的位置。通过单位所有者的个人访谈，获得了有关输出容量，电源大小，机器维护状况和工作室配置的数据。准备了半结构化访谈时间表以生成主要数据。还记录了工作室的平均温度，相对湿度和空气速度。根据单元的大小在布局上制作一个特定的网格（2 m×2 m），以获得单元的代表数据。还放置了一个声级计以记录噪音水平。观察到，面粉单元的正常工作时间（h）为8至12h。功率传输单元产生的最高声级在92.2 dBA和98.5 dBA的范围内变化。记录的平均声音强度为95.1 dBA，这是最高的噪声强度。为了确保安全的工作环境，应为单位内的所有工人提供噪音控制装置，并必须予以执行。机器应定期维护，以减少增加噪音的组件的变形，用人单位应考虑减少工作时间以最大程度地减少噪音暴露时间。