Before we analyze, we first need to clarify a fact - there is no such thing as a "weak photon body screening device", which does use X-rays for security checks. So the question becomes: Is the X-ray screening device used at Chengdu Shuangliu Airport harmful to humans?
Or the old saying, "out of the dose of toxicity is a hooligan". X-ray security checker in the end there is no harm, or to look at the security checker radiation dose of X-rays.
In accordance with China's development of the "ionizing radiation protection and radiation source safety standards", the dose limit for public exposure to the annual effective dose of 1mSv; special circumstances, if the annual average dose of five consecutive years does not exceed 1mSv, the effective dose of a single year can be increased to 5mSv; eye crystals of the annual equivalent dose of 15mSv; the annual equivalent dose of the skin 50mSv.
According to media reports, the "weak photon body screening device" at Chengdu's Shuangliu International Airport controls the amount of radiation at one time to within 0.2μSv (1Sv=1000mSv=1,000,000μSv).
So, if you accept a check during the "11" period of the security checker, there is no need to worry about the amount of radiation, which is not more than smoking a cigarette.
However, due to the cumulative effect of X-rays, the screening device needs to be used with great caution. If everywhere can encounter a tiny dose of X-rays, there is a risk of accumulating too much without realizing it. Therefore, the State Ministry of Environmental Protection has sent a letter to the Sichuan Provincial Environmental Protection Department, requiring it to the unauthorized illegal production, sales, use of X-ray body security equipment units, ordered to immediately stop illegal acts to ensure public safety.
(Source: Tech Life Weekly)
This article is from: Tech Life Weekly