Measurement of the magnetic fields of high-voltage substations (230 kV) in Tehran (Iran) and comparison with the ACGIH threshold limit values.
Measurements were made according to IEEE standard 644-1994 at a height of 1 m above floor level. It is concluded that none of the measurements exceeded the ACGIH threshold limit value. Among all control rooms the highest measured density amount is 0.69 μT in the control room of Ozgol substation and the lowest is 0.2 μT in the post of Shahid Firouzi. The control room of Ozgol substation is located in the second floor and bus-bars are located at a short distance from the window on the east, and so the highest recorded magnetic field is measured in this control room. Among all switchgear parts the highest amount 9.15 μT is measured in Kan substation. None of the measurements exceeded the ACGIH threshold limit value.
Faculty of Environment and Energy, Science and Research Branch, Isalmic Azad University, Tehran, Iran. mahdieh_sharifif@yahoo.com
Mahdieh Sharifi
MS
Fard
Parvin
P
Nasiri
Mohammad Reza
MR
Monazzam
D004560:Electricity; D004574:Electromagnetic Fields; D004781:Environmental Exposure; D004784:Environmental Monitoring / Q000379:methods*; D007492:Iran; D008280:Magnetics; D016273:Occupational Exposure / Q000032:analysis*; D011210:Power Plants; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods*; D020711:Threshold Limit Values