• Radiações

    Nesta seção poderá consultar artigos, estudos e contactos relacionados com os efeitos das radiações, de âmbito nacional e internacional.

  • Radiações

    Nesta seção poderá consultar artigos, estudos e contactos relacionados com os efeitos das radiações, de âmbito nacional e internacional.

Radiofrequency (RF) Radiation: Satellite Dish, Radar, Power Line, and Miscellaneous | FAQs (Health Physics Society)

 

Question
We are thinking about building a house near a "major power line." Is there any evidence that our children or we will develop an illness such as cancer? How far away do we have to be from the power line before we are considered at a "safe range"?


Answer
Potential health concerns about power lines were first raised in a 1979 study which associated increased risk of childhood leukemia with residential proximity to power lines. Since that initial study, numerous other investigations have attempted but failed to clarify whether observed associations between electromagnetic fields (EMFs) and various health effects were causal or coincidental. Some scientists have argued the physical impossibility of any health effect due to weak ambient levels of EMFs, while others maintain that the potential health risks should not be dismissed even though the evidence remains equivocal and contradictory.


There are no known health risks that have been conclusively demonstrated in relation to living near high-voltage power lines. But science is unable to conclusively prove that anything, including low-level EMFs, is completely risk free. Most scientists believe that exposure to the low-level EMFs near power lines is safe, but some scientists continue research to look for possible health risks associated with these fields. If there are any risks such as cancer associated with living near power lines, then it is clear that those risks are small.

 


 

Question
Recently our electric utility put up some powerful cables along with higher poles. How can I find all the information that I need in order to be informed?


Answer
Your local electric utility company would be the best source of information on what exactly is being installed. Most companies have good information available on EMF facts and can answer questions about local concerns. Look for a consumer-informatio n telephone number in your electric bill.

There are two general sources of information about EMF that you might be interested in pursuing:

1. "Possible Health Effects of Exposure to Residential Electric and Magnetic Fields," Committee on the Possible Effects of Electromagnetic Fields on Biologic Systems, National Academy of Sciences/National Research Council.

2. An excellent collection of questions and answers on health issues related to power lines from the Medical College of Wisconsin.

 



Question
How can I find out how many Hz I am being exposed to from a corridor of high-power pylons near my condo? Also, would proximity to these pylons affect the amount and intensity of static electricity in my apartment?

Answer
In the United States the power system supplies 60 Hz electrical power. One Hz is one cycle per second. Electrical power in the United States uses alternating current that changes at a rate of 60 cycles per second. In some other countries the electrical power supply oscillates at 50 Hz. The 50-60 Hz is in a frequency range called extremely low frequency, or ELF. Electrical transmission lines do not affect static electricity in the home.

 


Question
How far from high-voltage lines is it safe to live?

Answer
The National Academy of Sciences reports of reviews of possible health hazards of power-line EMF are available online. Two reports may be of interest to you: a 1997 Report and a 1999 Report.
The second, most recent, report is available for reading online. It presents a review of the results from the EMF-RAPID (Electric and Magnetic Fields Research and Public Information Dissemination) program, a national research program authorized by Congress in the Energy Policy Act of 1992. In the Executive summary the report concludes (in part): "The EMF-RAPID biological research contributed little evidence to support the hypothesis that a link exists between MF [magnetic fields] and cancer" and "The results of the EMF-RAPID program do not support the contention that the use of electricity poses a major unrecognized health danger."

 

 

 

Fonte: http://hps.org/publicinformation/ate/faqs/radiofrequencyqa.html

 

 

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