Application of three risk assessment methods to noise risk assessment in an automobile foundry enterprise / 中华劳动卫生职业病杂志

Objective: To explore the applicability of three different kinds of noise occupational health risk assessment methods to the occupational health risk assessment of noise exposed positions in an automobile foundry enterprise. Methods: In July 2020, the occupational-health risk assessment of noise-exposed positions was conducted by using the Guidelines for risk management of occupational noise hazard (guideline method) , the International Commission on Mining and Metals Guidelines for Occupational Health Risk Assessment (ICMM) method and the Occupational-health risk index method (index method) respectively, and the results were analyzed and compared. Results: Through the occupational health field investigation, the noise exposure level of the enterprise's main workstations was between 80.3 and 94.8 dB (A) , among which the noise of the posts of shaking-sand, cleaning and modeling was greater than 85 dB (A) ; The noise risk of each position was evaluated by the three methods, and the adjustment risk level was between 2 and 5 assessed using the guideline method, between 2 and 3 assessed using the index method, and 5 evaluated using the ICMM model. Conclusion: Each of the three risk assessment methods has its own advantages and disadvantages. The ICMM model has a large difference in value assignment, and values in the results are larger than expected. The evaluation results of the guideline method and the index method are consistent in some positions, there is certain subjectivity in the evaluation using the index method, and the guideline method is more objective.

Lagged effect of temperature on non-accidental mortality and years of life lost in Wuxi: a time-series study / 中华疾病控制杂志

Objective To evaluate the effect of air temperature on non-accidental mortality (A00-R99) and years of life lost in Wuxi city. Methods Data on daily non-accidental mortality and meteorology index were collected from 2012 to 2017. Distributed lag non-linear model (DLNM) was used to assess the effect of temperature on non-accidental death and YLL and the cumulative effects between cold and hot temperature on non-accidental mortality and years of life lost with different lag days. Results A V-shaped relationship was noticed between temperature and mortality. Cold effects were delayed by 3 days and persisted for 14 days. Hot effects appeared acute and reached the peak at the same day. Low temperature had stronger gross effect than high temperature had. There were differences of temperature effects between different age and gender groups. Conclusions Low and high temperature were associated with elevated mortality risk. Cold effect had lagged effect and persisted for long time, however, hot effects appeared acute and the impact of low temperature was greater.