Do computers and banks use LCD now? There is almost no harmful radiation, electromagnetic radiation is a little, far less than the mainframe, and the mainframe radiation generally does not exceed the standard. Banks generally use terminals, and that little thing radiates less.
Plasma TV is similar to LCD, mainly the high-voltage part will produce some harmful electromagnetic radiation, but it should be far enough away from you at 52 inches.
Except for a few "invisible" killer rays, general radiation is not so terrible. The fire around the stove itself is a way to receive radiation, as long as the power is small enough and the distance is far enough, there is no threat at all. The degree of damage is also directly related to the distance. For example, something may be burnt at a distance of 10 cm, and it may feel hot at a distance of 1 m, but it may not feel hot enough at a distance of 2 m.
The most effective way is to stay away from radiation. Stay away from the server/host, or seal it with an iron box (mostly), and stay away from the high-voltage part of the display (sit a little farther).
If that 52 is used for multi-channel monitoring, you may want to pay attention to the influence of the picture first. The TV has high brightness and pays attention to eye care. Backlit lamps are also a kind of radiation. If the distance is not enough, it may roast people.