Today I saw a technician performing pipeline flaw detection; he said the X-ray machine he was using emitted radiation in a directed manner
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Today I saw a technician performing pipeline flaw detection. He said that the X-ray machine he uses emits radiation in a directed manner, with radiation only being emitted in a specific direction; people standing behind the probe, even if they are very close to the machine, are safe. Is that correct?
It should be the same as with X-ray machines in hospitals: if you don’t stand in that designated position, do you think it’s possible to take a chest X-ray?
No, there is some reflection； And there are circumferential X-ray machines.
It should be that the radiation intensity is high at the front end of the flaw detector and low at the back end; when the radiation level at the back is below a certain value, it is considered harmless to humans. It’s impossible for there to be no radiation at the back.
It’s fine; just tell him to emit some radiation from behind and see if the baby is scared. People can drown in big rivers.
There is no protective shielding in the direction facing the radiography machine (it needs to be aligned with the weld, and no shielding should be in the way), so radiation is present; however, a safety distance of 30 meters is generally sufficient to ensure safety from this radiation. As for the sides and back of the imaging device, there are internal shielding mechanisms in place, so the amount of radiation leakage is very low; it is considered a safe area. But! But! But! There will still be radiation levels, and the specific values can be measured using a detector. It’s best to stay away, stay away, stay away! !
Flaw detector Type I refers to those who take photographs from behind the imaging device. If the radiation level is extremely high, then who would dare to work in this industry? **There must be control standards, and the equipment is definitely tested to meet requirements before it is released again.
At the flaw detection site, in general, people are not allowed to be present. In fact, there is still radiation present, and the amount of radiation can only be determined through professional measurements. It is necessary to follow the operating procedures strictly.
There is actually radiation; you can find out by using a dosimeter
There is definitely radiation involved; X-rays are reflected and refracted in any medium. The machines used for X-ray inspection of welds are typically industrial X-ray devices, and they pose a risk to human health even when kept at a safe distance. If the amount of radiation absorbed by the human body exceeds the limits established by medicine, it can cause irreversible damage, and the timing of such damage becoming apparent is unpredictable. Those who work with X-ray detection on a long-term basis often overlook these hazards due to issues related to work efficiency and the uncertainty of when the radiation is emitted; this is especially true for those working in field conditions. To avoid causing panic among other people, they also do not explain in detail the dangers associated with X-rays. X-rays accumulate in the human body; if there is no exposure to X-rays for a certain period of time, the accumulated X-rays will gradually disappear. Therefore, those who work with X-rays are required by regulations to undergo professional medical examinations on an annual basis, to have their dosimeters checked, and to be given time off for rest.