Volume 5, Issue 3 (21 2012)
ijhe 2012, 5(3): 379-386 |
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Majidi F, Alavi S, Azimi Pirsaraei R, Heidary A, Asgari F. Distribution Survey of Electric and Magnetic Field intensity at a High Voltage Electricity Post in Zanjan City using GIS Technology. ijhe 2012; 5 (3) :379-386
URL: http://ijhe.tums.ac.ir/article-1-19-en.html
URL: http://ijhe.tums.ac.ir/article-1-19-en.html
1- , fma6662000@yahoo.com
Abstract: (10827 Views)
MicrosoftInternetExplorer4 Background and Objectives: Electric and magnetic fields in the workplace are one of
the detrimental factors of power plants, transmission lines, electrical wires,
and electrical equipments, therefore, exposure to these fields might be harmful
for human health. This study aimed to provide information about intensity of
the electromagnetic fields at the high voltage electricity posts and its
comparison with the threshold limit value (TLV).
Materials and Methods: The study was conducted at one of the high voltage electricity post in Zanjan City having 63, 230, and 400 KV power transmission lines. After identifying stations and measuring the intensity of these fields, GIS maps were prepared and the values were compared with permissible values.
Results: The measured magnetic flux density at different parts of the high voltage post showed that the lowest and highest intensity were 1.69 and 153.7 mG respectively which were lower than the ACGIH TLVs.The lowest and highest intensity of the electric field were 0.008 and 38.07 KV/m respectively. The highest value belonged to the 400 KV line, which exceeds the recommended ACGIH TLV (25 KV/m).
Conclusion: According to the results, the magnetic field intensity was below the TLVs, but the intensity of electric field measured in the 400 KV line was greater than its TLVs. Thus, the strategies and recommendations for reducing exposure should be taken.
Materials and Methods: The study was conducted at one of the high voltage electricity post in Zanjan City having 63, 230, and 400 KV power transmission lines. After identifying stations and measuring the intensity of these fields, GIS maps were prepared and the values were compared with permissible values.
Results: The measured magnetic flux density at different parts of the high voltage post showed that the lowest and highest intensity were 1.69 and 153.7 mG respectively which were lower than the ACGIH TLVs.The lowest and highest intensity of the electric field were 0.008 and 38.07 KV/m respectively. The highest value belonged to the 400 KV line, which exceeds the recommended ACGIH TLV (25 KV/m).
Conclusion: According to the results, the magnetic field intensity was below the TLVs, but the intensity of electric field measured in the 400 KV line was greater than its TLVs. Thus, the strategies and recommendations for reducing exposure should be taken.
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Type of Study: Research |
Subject:
General
Received: 2012/04/14 | Accepted: 2012/07/14 | Published: 2012/10/13
Received: 2012/04/14 | Accepted: 2012/07/14 | Published: 2012/10/13
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