If exposed to industrial X-ray flaw detection radiation for a short time, it will not have any impact on the body, but if exposed for a long time, it will lead to a series of hazards: it will reduce the body's immunity and lead to leukemia; It will damage the active cells of the body, which will lead to some diseases, such as thyroid diseases and mammary gland hyperplasia. It can also destroy genes and even lead to cancer. So try not to touch industrial x-rays.
Industrial X-rays are much larger in quantity and intensity than ordinary rays, so protective measures must be taken, because radioactive substances will affect the functions of various organs of the human body, such as reproductive system and hematopoietic system, which will seriously cause cancer. It is suggested that you must wear a special radiation-proof lead suit or dosimeter during your work, determine how much radiation you receive every year, and go to the hospital for physical examination regularly. Pay attention to observe your physical condition at any time and try to avoid staying in a high radiation working environment for a long time.
It may lead to cell damage and tissue and organ damage. If you touch it within a few minutes at ordinary times, it won't cause much impact, especially for people who have been in contact for a long time. You must wear sunscreen clothes when you touch it, which can reduce X-ray damage. If you are a child or a woman during pregnancy, it is best not to have an X-ray examination to avoid fetal malformation. Generally, it can be tested after weighing the pros and cons.
X-ray flaw detection mainly refers to a flaw detection method that uses some rays to detect the internal defects of weld and its heat affected zone. The commonly used rays are mainly X-rays and γ-rays, which have the characteristics of short time, high speed and high sensitivity for detection equipment.
But no matter what kind of radiation, it has radiation effect on human body, and long-term exposure is harmful to human health; In particular, frequent contact will cause systemic effects, leading to some acute and chronic radiation sickness, and occasional single contact will cause skin damage and eye lens damage to the body. For frequent work contact, protective measures should be taken to avoid frequent and continuous contact. The most obvious symptom of long-term contact is hair loss, which can induce other pathological effects in severe cases.
Harm of X-ray flaw detection to human body II
X-rays and gamma rays are often used for radiographic examination.
The influence of X-rays on the body, due to the influence of many factors, causes a variety of clinical reactions. When the radiation damage of human body appears on the subject, it is called the body (body) effect. If it affects the offspring of the exposed person, it is called genetic effect.
According to the scope of injury to the exposed person, it can be divided into systemic effects (such as acute and chronic radiation sickness) and single tissue effects (such as skin injury and lens injury). ) and intrauterine irradiation effects (such as fetal malformation, etc. If we consider the time when X-rays have an impact on the body, it can be divided into short-term effects and long-term effects.
When the human body is irradiated by gamma rays, gamma rays can enter the human body and ionize with cells in the body. Ions produced by ionization can corrode complex organic molecules, such as protein, nucleic acids and enzymes, which are the main components of living tissues. Once they are destroyed, the normal chemical processes in the human body will be disturbed, which will seriously lead to cell death.
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The harm of nuclear radiation to living things mainly lies in that it can ionize organic biomolecules, including protein, DNA, RNA and other small organic molecules that play a role in cells. Radiation destroys or charges these molecular structures, making organic molecules unstable, rearranging or producing free radicals harmful to the body. Among them, DNA molecules are most affected by nuclear radiation.
The influence of nuclear radiation on DNA of organisms often occurs in cells with active cell replication, such as epithelial cells, germ cells and hematopoietic stem cells in bone marrow. Because the DNA of ordinary cells is generally no longer replicated, the irradiated cells only affect this generation of cells, so the impact is relatively small.
However, the cells with active replication cells are loose in structure, vulnerable to damage and difficult to repair, and may also plant "bad seeds" and cause cancer. Because hematopoietic stem cells are the source of blood cells and immune cells, when hematopoietic stem cells become cancerous, white blood cells will replicate indefinitely, leading to leukemia, and the immune system will collapse, making it difficult for the body to repair.
Harm of x-ray flaw detection to human body 3
What are the hazards of X-ray flaw detection to human body?
X-ray flaw detection is less harmful, and the main harm is concentrated in magnetic levitation. As long as the magnetic suspension is harmless to toxic substances, it can hardly be counted. If you use fluorescent magnetic powder, you should use black light, that is, ultraviolet light, which is harmful to human body. Fluorescent magnetic powder is not commonly used for MT flaw detection in casting. Dry magnetic powder is mainly dust pollution, which has certain influence on the lungs.
What are the characteristics of radiographic inspection?
1, X-rays can penetrate substances that ordinary visible light cannot penetrate. Its penetrating power is related to the wavelength of X-ray and the density and thickness of the penetrated substance.
2. The shorter the X-ray wavelength, the stronger the penetrating power; The lower the density and the thinner the thickness, the easier it is for X-rays to penetrate. In practical work, the penetrability of X-rays (that is, the quality of X-rays) is determined by the voltage volt value (kV) of the bulb, and the amount of X-rays is expressed by the product of current (mA) passing through X-rays per unit time and time.
When X-rays or other rays (such as γ-rays) are absorbed through a substance, the molecules that make up the substance can be decomposed into positive and negative ions, which is called ionization. The number of ions is directly proportional to the number of X-rays absorbed by the substance.
Ionization is produced by air or other substances, and the amount of X-rays can be calculated by measuring the ionization degree with instruments. This is how the inspection equipment realizes the flaw detection of parts. X-rays have other functions, such as sensitivity and fluorescence.
When doing X-ray flaw detection, you must pay attention to the inspection under the guidance of a doctor, pay attention to the inspection according to the doctor's guidance, and don't blindly cause your own injuries. The above is the introduction of the harm of X-ray flaw detection to human body. When carrying out the inspection, you must first understand the relevant inspection preparations.