What are the preparations for X-ray machine operation
　　1, on-site operation
　　A) When performing X-rays on site, safety lines should be set, "control area" and "management area" should be determined, and obvious warning signs should be set.
　　B) The operator should wear a personal dose pen.
　　 2. Preparation before power-on
　　A) Newly purchased X-ray machines or operators who use the machine for the first time should read the equipment manual first and use the X-ray machine operation and maintenance equipment correctly.
　　B) Check whether the power supply used matches the nominal voltage of the equipment.
　　C) Check whether the air pressure of the gas insulated X-ray machine meets the requirements.
　　D) Connect the power cord and high-voltage cable plug to the control box, high-voltage generator and cooling system firmly to ensure good contact.
　　 3. Check after power on
　　A) After the power is turned on, the power indicator on the control box panel is on.
　　B) Check the working condition of the cooling system (whether the head fan of the gas insulated machine works normally).
　　4. Exposure control
　　A) First check the "door-machine" interlocking device. A warning light is set above the working door, and the "high voltage open" button can be pressed after it is normal.
　　B) If an abnormality is found during the exposure process, press the "High Voltage Break" button to cut off the high voltage and analyze the cause before you can consider continuing the exposure.
　　C) After the exposure is over, when the gas insulation machine buzzer sounds, "KV" will automatically return to zero, the red indicator light will go out, the high voltage will be cut off, and the exposure time knob will reset.