Tuesday, January 13, 2009

Is living near power lines bad for your health? 在電纜附近居住 有害健康嗎？


卑斯疾病控制中心近期研究報告指出，高壓電纜發出的電磁波，証實與白血病（Leukemia）俗稱血癌有關。詳情請參閱2009/01/13世界日報中文報導：住家近高壓線 血癌風險高。為確保家人安全與健康，卑斯水電局有電磁波測量儀器供市民外借，請與水電局辦事處1-800-224-9376聯絡。

Dr Ray Copes, director of Environmental Health Services Division, BC Centre for Disease Control, has confirmed the electromagnetic fields (EMFs) produced by electrical appliances, electrical wiring, and power lines are associated with childhood leukemia. This is published on the November 2008 issue of BC Medical Journal.

Studies using magnetic field strength as an exposure measure have found that exposures greater than the range of 0.3 to 0.4 µT lead to a doubling risk of leukemia, with very little risk below this level. This exposure range is approximately equal to a distance of 60 m within a high-voltage power line of 500 kV. (Note: In 1999 BC Hydro study found no correlation between leukemia and nearness of distribution or transmission lines, nor magnetic or electric field exposure levels. )

Dr Copes concluded to eliminate the risk, one would need to achieve a separation distance of 600 m between every high voltage power line and the nearest residence. While this could be done, it would require substantial changes to existing land use patterns and would require significant resources.

For your safety concerns: BC Hydro is committed to the safe use of electricity. A "Magnetic Field Measurement Kit" is available for loan at some BC Hydro offices throughout the province. The kit includes a measurement machine, a video and several instruction booklets to assist with your readings. Call BC Hydro 1-800-BCHYDRO (1-800-224-9376) for your closest office.

More information :
Health Canada Electric and Magnetic Fields
BC Centre for Disease Control Non-Ionizing Radiation Issues
BC Hydro Electric and Magnetic Fields
USA NIEHS Electric & Magnetic Fields
WHO Electromagnetic fields

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