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Application test 'Guideline 3.1 specific magnetic field zone near high voltage overhead power lines'

Toepassingstest 'Handreiking 3.1 specifieke magneetveldzone bij hoogspanningslijnen'

Synopsis

The Guideline, which can be used by consultants to calculate the magnetic field zone near overhead power lines, was updated in 2013 (version 3.1). RIVM has a so-called application test carried out by these consultants to make sure they can work according to the new Guideline. Four of the six participating consultants have successfully passed the test. The results of their calculation fell within the the criterion chosen by the Ministry of Infrastructure and the Environment.

It was necessary to update the Guideline because previous versions were limited to one single power line. The new version (3.1) therefore contains also an instruction for calculating magnetic field zones in situations in which two or more power lines are sited close together. These lines can affect each other's magnetic field. The adjustments were carried out on the authority of the Ministry of Infrastructure and the Environment.

The adjustment in the Guideline was important because the number of locations where power lines are close to each other increases. Good spatial planning bundles new power lines as much as possible with existing lines, resulting in two rows of masts close together. Another possibility combines the cables of a new connector with the cables of an existing line resulting in one row of masts.

The Guideline emerged from the precautionary policy to overhead power lines issued in 2005. This policy defines a magnetic field zone within which, in new situations, as few as possible dwellings, schools, crèches, and day care facilities are to be situated. The policy was needed because scientific research indicates that children who live in the vicinity of overhead power lines are more likely to develop leukaemia.
 

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