37results about How to "Reduce the risk of exposure to radiation" patented technology

The invention discloses a control rod guide cylinder hoisting device and a control rod guide cylinder hoisting method. The control rod guide cylinder hoisting device includes a hoisting assembly for connecting with lifting equipment, a gripper actuator for picking and placing the guide cylinder, And at least one set of connecting rod assemblies connected between the suspension assembly and the gripper actuator; the gripper actuator includes a guide rod for extending into the guide cylinder, passing through the guide rod and A moving rod that can move back and forth along the axial direction of the guide rod, an umbrella-shaped support that is connected between the guide rod and the moving rod and that opens and closes with the movement of the moving rod; the umbrella-shaped support is open state, its top is used to abut against the support surface below the guide plate in the guide cylinder; when the umbrella-type support is in the closed state, it extends along the axial direction of the guide rod and fits on the guide rod superior. The invention realizes the safe, accurate and reliable hoisting operation of the control rod guide cylinder.

The invention belongs to the field of nuclear waste treatment, and specifically discloses a reaction device and method for degrading radioactive waste resin based on the Fenton method. The device includes a stirring reaction module, a resin feeding module, an acidifying catalyst regulating module, a heating regulating module, a hydrogen peroxide regulating module, a reaction liquid processing module, and a reaction gas circulation module control equipment, and the control equipment is used for real-time collection of the reaction substances in the main body of the stirring tank. The temperature and pH value are used to regulate the delivery volume of the acidification catalyst regulation module, the heating regulation module and the hydrogen peroxide regulation module in real time. The method includes adding waste resin, acidification catalyst and hydrogen peroxide into the stirring reaction module according to the feeding order, and real-time regulation of the reaction temperature and pH value, and post-processing the product after the waste resin particles are oxidized and decomposed. The invention can effectively degrade the waste resin, reduce the generation of pollutants, and at the same time reduce the risk of radioactive leakage through a highly automated device.

The invention, which belongs to the technical field of the computer, discloses a method and apparatus for determining an ideal single-lifting counting rate. The method comprises: distances between unit regions in a curved surface formed by rotation of a bar source of radioactive activity in a direction parallel to an axial direction of positron emission tomography (PET) equipment at a first distance being a distance to the axis of the PET equipment and all crystals of the PET equipment as well as angles of each unit region and each crystal are determined; and according to the distances between the unit regions and the crystals and the angles of each unit region and each crystal as well as a preset ideal single-lifting counting rate algorithm, a current ideal single-lifting counting rate of each crystal is determined. Therefore, being close to a radioactive solution by a technicist for long time can be avoided and thus the risk of radiation on the technicist can be reduced; and an accident can be prevented.

The invention provides a profile gaugemeter automatic calibration device and a calibration method. The device comprises a scale frame erected above a profile gaugemeter radiation detection area, a mobile vehicle body used for carrying a standard model, and a drive mechanism having a position encoder, wherein each tick mark on the scale frame represents a position of the ionization chamber in the profile gaugemeter radiation detection area, and the mobile vehicle body can be movably disposed on the scale frame in a direction along the arrangement of the tick marks, the position encoder is connected to a central controller, and when the central controller issues an instruction to the position encoder, the drive mechanism drives the mobile vehicle body to move to the tick marks to be calibrated. The profile gaugemeter automatic calibration device and the calibration method can remotely operate the movement and positioning of the standard template, and can quickly correct the thickness compensation parameters of the respective ionization chambers of the profile gaugemeter.