Electric reactor is the source of the strong magnetic field.
The some part of the relays of the protection system is situated in the close vicinity of the electric reactor. The magnetic field is used for the electromagnetic relay control.
Shielding of electric reactor magnetic field // Electronics and Electrical Engineering.--Kaunas: Technologija, 2009.--No.
The strongest magnetic fields are near electric reactors in electric plants.
The properties of the electric reactor and ways of protection against its magnetic field
The use of the electric reactor cell screen is represented to be the most perspective.
When the cylindrical shield is used for protection against the electric reactor magnetic fields, it is under the influence of the own reactor field and the outer fields.
Shielding of the electric reactor amorphous soft magnetic alloy
The agency has already released its evaluations on all but the two Chugoku Electric reactors
which were found in March to have 511 inspection failures or devices that needed to be replaced.
Underpinning safety concerns about old nuclear plants, 52 of the 66 locations were concentrated in the five Kansai Electric reactors
that have been in service for more than 30 years -- the Mihama No.
The government decided to allow construction of the nuclear power plant under the new energy development plan on April 6 on the assumption that demand will grow sufficiently to necessitate the amount of power that the Chugoku Electric reactors
will supply, the officials said.