Don't rush to pick up the bag before the baggage passes the security check, which may cause radiation leakage

Nowadays, if you take the subway, car, plane, or train, you have to go through the security inspection equipment to check your luggage. Many people are eager to get on the bus and haven't waited for their luggage to come out of the security device, so they lifted the lead curtain and even extended their hands into the machine to directly take out their luggage. Be aware that the radiation in the machine will leak out. Although the radiation in the security equipment is minimal, professionals do not recommend that passengers put their hands inside the machine.

Anxious passengers lift the security screen lead curtain to take luggage

At the end of work on the afternoon of the 22nd, the reporter saw next to the security instrument installed at the entrance of the Xinjiekou Station of the subway, a staff member was specifically responsible for reminding passengers to put luggage packages on the security instrument. At the other end, under the influence of the conveyor belt, the baggage slowly drove out of the lead curtain, and the whole process took less than ten seconds. The reporter carefully observed and noticed that the X-ray will automatically start after the passenger's luggage has completely entered the machine, and the indicator light on one end of the security instrument will light up. When the detected luggage comes out from the other end, the indicator light will go out.

The reporter observed for a while, and most citizens would wait for the luggage to leave the lead curtain before taking it away. However, there are also anxious citizens who have not yet waited for the luggage to completely exit the security device, opened the lead curtain, and even reached into the machine, dragged their luggage out, and hurriedly rushed to the car.

Citizens have doubts about the size of radiation from security instruments

"I know that there is radiation in the security instrument. I don't know whether it often affects the children in the stomach by walking by the side!" Ms. Yang is a prospective mother. She has just been pregnant shortly. During the interview, she also raised her own questions. Because of work, Ms. Yang often takes subways, trains and other means of transportation. She will continue to work for some time to come. By train and subway, she must pass through the security inspection equipment.

According to Ms. Yang, in order to know whether the security instrument has radiation and the amount of radiation, she specifically checked the Internet and found that the netizens' answers were varied, some said that there was radiation, and it was quite large, and some said that the radiation was very small. . "I don't know who to believe now. Every time I pass by the security inspection instrument, I'm far away!"

The largest radiation at the entrance and exit of the lead curtain of the baggage security inspection instrument

Is it appropriate to open the lead curtain to pick up luggage? Does the pregnant woman's worry make sense? What correct way should we take out of the security check? The reporter also interviewed experts in the industry on this issue.

Nanjing Ruisen Radiation Technology Co., Ltd. is a technical service organization specialized in radiation environment and radiation health protection testing. They have conducted radiation detection and environmental impact assessment on the baggage security detector of Nanjing Metro. "Baggage security devices in subways, airports, bus stations, and railway stations are basically the same. The radiation dose of security devices is much smaller than the dose of radioactive sources used in medicine, so passengers don't need to worry!" Industry director said.

So, what is the radiation value around the baggage security instrument? Director Zhu introduced that they had measured the radiation value of the Nanjing subway baggage security instrument. The detection value at the entrance and exit of the machine with lead curtain protection at both ends of the machine was more than 300 nsv / h (Nasif / hour). The radiation dose of the console is more than 100 nsv / h, and the detection value of the pedestrian channel beside the machine is also more than 100 nsv / h. "From this detection value, it can be seen that the radiation at the entrance and exit of the lead curtain of the baggage security inspection instrument is the largest, and the security inspector's operating platform and pedestrian walkway are smaller!"

[Expert reminder]

It is not advisable to lift the lead curtain

Keep your luggage as far away as possible

Does such a measurement result indicate unsafe? Director Zhu's answer is no. He explained by example. Generally, it is like a mountainous area in Yunnan and other places. The amount of radiation under such natural conditions is also 100-hundreds of nsv / h. It may be lower than in Nanjing. Generally, the human body illuminates the whole body with an X-ray It will equivalently absorb a dose of 60,000 nsv / h, which shows that the radiation values ​​detected above are still very safe for the human body.

Does this mean that the lead curtain can be lifted without hesitation, and the hand can be reached into the security instrument to take the luggage? Director Zhu said: If you put your hand inside the lead curtain, you will receive more radiation than standing next to the security device or picking up your luggage from outside the curtain. Although the dose is "large", it will not cause too much harm to the human body, but from the perspective of protecting the body, it is recommended that passengers do not do such behavior.