Radiation safety

I just searched on Baidu; below is what I found there. 1. A nuclear scale operates on the principle of a substance’s absorption of gamma rays; it is a high-tech product resulting from the integration of modern nuclear technology and computer technology. It consists of a source unit (gamma ray source and protective lead tank), an Type A bracket, an ionizing gamma ray detector, a pre-amplifier, a pre-amplifier power supply, a speed sensing element, and the main system of the nuclear scale. 2. Features: An ideal contactless continuous weighing and metering control device with high measurement accuracy and good long-term stability; it overcomes the measurement errors caused by mechanical variations such as belt deviation, wear, tension changes, and material impact in other weighing devices. No mechanical wear, maintenance-free. 3. Technical parameters: · Precision: Calibrated under normal load; when the flow rate varies within 20%–100%, the cumulative error is 0.5%–1.0%. · Moisture content of the material: It can vary within -5%–+5% during calibration without affecting measurement precision; recalibration is required if it exceeds this range. ·Maximum distance from probe to host: A 0–5V signal can be used within a range of 800 meters, while pulse signals can be utilized within a range of 800–5000 meters. ·Power supply: AC220V (-15% – +15%), 50Hz. Operating environment: Scale body: Temperature range of -50ºC to +60ºC (with automatic temperature compensation function); humidity level below 90%. Main unit: Temperature range of +5ºC to +40ºC; humidity level below 90%. The gamma source consists of a 137Cs gamma radiation source with an intensity of 25 mci, a half-life of 30.1 years, and an activity of 0.925 GBq (classified as Category 5 source), along with a shielded lead container made of steel with a lead thickness of 7 CM. The radiation source is located at the center of this container; when the rotating piston is in the working position, gamma rays are emitted through a collimating aperture of 42º×7º. The specially designed protective lead container has been thoroughly inspected by health and safety authorities and meets the safety standards specified in GB4792-84. It does not pose any risk to workers or maintenance personnel, nor does it leave any residue on the materials that are irradiated. Users can rest assured

Afraid of this too? Then if I have to wait there day after day for seven or eight ion injectors, shouldn’t I just leave right away?……