Objective To evaluate noise exposure levels of workers in pumped storage power stations.
Methods Individual noise exposure levels in 2 patrolling workplaces and 1 control room and in both operating and alternative conditions were measured. A mathematical calculation based on individual exposure level and exposure time was used to evaluate workers' noise exposure of 42 h per week which was then converted to the time equivalent continuous A-weighted sound pressure level (LAeq) of 40 h per week.
Results In this study, the noise exposure levels in 2 patrolling workplaces and 1 control room were measured 3 times a day in both operating and alternative conditions. The workers' LAeq of 42 h per week was 62.1 dB (A) . After conversion, the workers' LAeq of 40 h per week was 62.3 dB (A).
Conclusion The noise exposure levels of workers in pumped storage power station do not exceed the occupational exposure limit of 85dB (A) prescribed in Occupational exposure limits for hazardous agents in the workplace Part 2: Physical agents.
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