Is A Viewer That Shows Radiation Sources Available?

As a nuclear worker, I’m told of the radiological conditions in the area I’m working in. “Don’t stand too close to this particular pipe for very long.” or “It’s better to wait in this area than that area.” as well as maps with dose rates are how we work. I’d like to have a device I could look through, like a night vision scope that shows various intensities of radiation. Does anyone know if these are available?