Installation reference value: 1 microtesla (10 milligauss)

• Environmental Protection Act of 29 May 2008 (version amended in 2010)  A distinction is made between old installations (built before 2010) and new ones. Installation reference value: 1 microtesla (µT); to be exceeded by not more than 1.5 times on a maximum of five days a year; systematic and periodic exceedances are not permitted. Sensitive areas must be declared separately . Old installations also have to comply with reference values or be refurbished within five years.