Abstract

Overview

This research investigates the impact of the internal layout of equipment generating magnetic fields in power substations on workers' exposure.

Materials and Methods

• The study measured extremely low-frequency magnetic fields using IEEE 644:1994 standards in three substations and a control building within a southern Iran petrochemical power plant.
• Occupational exposure levels were calculated for workers, examining the sources of maximum magnetic field generation and how modifications in equipment layout could affect these levels.

Findings

Initially, electrical engineers and technicians faced a maximum time-weighted average (TWA) exposure of 10.14 μT. In contrast, the control room operators experienced the minimum TWA exposure at 0.84 μT. Following adjustments in the internal design and equipment arrangement, there was a significant reduction in TWA by 0.73 μT.

Conclusion

The study concludes that an optimal arrangement of equipment significantly contributes to the reduction of magnetic field exposure among workers, enhancing overall health safety in industrial settings.