RADIATION TOLERANT VIEWING SYSTEM
The RCS-2040 radiation tolerant viewing system is designed for high-resolution color TV observation in radioactive waste storage tanks. The system includes a radiation-shielded high resolution (S-video format) color TV camera with a 10:1 zoom lens, a lighting system consisting of a bank of six high intensity LED lights, and a variable speed pan and tilt to provide viewing in all directions within the waste tank.
The RCS-2040 system is cable-deployed, and can be lowered into the waste tank head space using available six-inch diameter (or larger) risers. After installation, all functions of the system are controlled from a remotely located control station.
The RCS-2110S camera was specially designed for this application. It is compact, has high resolution and sensitivity (minimum scene illumination required is 0.5 LUX), and incorporates a 10:1 zoom lens with auto focus, and auto iris. The horizontal field of view ranges from 46 to 4.86 degrees. See the Camera Field of View for field size for various viewing distances.
The RCS-2110S camera also contains radiation shielding within the camera housing to provide a total dose radiation tolerance of 2 x 105 rads. An "auto park" feature is incorporated in the system to automatically return the camera to a horizontal position when not in use to maximize the in-tank lifetime of the camera module.
System lighting is provided with the AL-530 LED array that incorporates six low voltage (12 volts), high-intensity lamps, each with a lifetime rating of 25,000 hours. When equipped with the standard 25 degree lamps, the total rated intensity is 15,600 candela, that provides a scene illumination of 47ux at a distance of 60 feet. This is 94 times the minimum illumination requirement for the RCS-2110S TV camera. If even higher scene illumination is needed, 15 degree lamps can be used. For scene illuminations at other distances with the standard 25 degree and special 15 degree lamps, see the Scene Illumination section.
The RCS-2040 system uses the PTE-100 pan and tilt to adjust the angular position of the camera and lighting array. It is equipped with low voltage variable speed motors for precise motion control. This speed control is particularly useful when the camera is "zoomed in". Limit stops on both axes are used to avoid possible damage to the electrical cables.