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Airports are often equipped with X-ray machines that operate with a high X-ray penetration energy, usually within 140 and 160KV. The machine’s level of penetration depends on the KV value, with higher KV values giving more material penetration.
Though with a single X-ray source, these systems function as a dual system of X-ray energy.
What follows is an analysis of the detected images with the aid of a computer circuit for a better understanding of the lower energy projected by mostly organic items.
What exists presently as a security X-ray system has a higher transmission rate for precision in detection. The fast movement of human traffic is aided by the security doors and security X-ray machine with accurate detection of the presence of harmful objects.
At the opposite end of the X-ray of the platform is a detector to pick up the residue of the X-ray passing through the object.
A filter exists within the system to screen the lower energy leaving only the higher X-ray energy to pass on to the second detector.
A security alert is triggered once harmful or prohibited objects like explosives, and sharp metals like knives are detected by the X-ray machine. However, it is operated either manually or automatically but saves the image generated automatically online.
Furthermore, X-rays are kept from scattering at the security checkpoints with the use of high density X-ray machines and anti-penetration functions.
The advantages you can expect from this X-ray security with high tech screening functions include savings in the workforce, resources, and effective identification of security threats.
UNI X-Ray Technology is a clear leader when it comes to security, and it has been at the forefront of becoming a global pacesetter. It continues to use technology and constant innovation to enhance customer experience while still making more advancements in creating security solutions, services, and products.
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Airport security employs various security equipment, including metal detectors, body scanners, security machines, and security gates.
Suspicious items on humans are often detected with gadgets such as body scanners. These scanners look into the human’s clothing for security-threatening objects without removing the clothes.
However, the technology used will determine if the operator’s image is a cartoon image of the person showing the security-threatening object, the person’s X-ray image, or a person’s body image with alternate wavelength.
For an ordinary air travel person, the X-ray scanner at the airport simply conveys luggage with the help of a moving platform from the drop off point to the passenger collection point. Nonetheless, the scanner can penetrate the contents of the bags to identify security-threatening items with X-rays.
The use of magnetic fields by metal detectors is another method of detecting a metal object that might pose security threats at the airport.
The current flow through these devices produces these magnetic fields reflected anytime it comes in contact with any metal, such as belt buckles and wristwatches.
The machine makes a beeping tone once the device picks up the reflected signal. This beeping tone alerts the aviation security agents.
An X-ray machine’s workings are such that X-rays are generated and projected from a lead-lined X-ray tube. The projected X-ray beams pass through a hole, and all baggage passing through the machine tunnel is subjected to the X-ray light.
A detector on the other side of the X-ray displays the image reflection of the bag’s contents. If the contents are thick metallic objects like lead, there will be an absorption of the radiation, and the X-rays will not pass through.
Computer analysis is done by the scanner based on the radiation’s absorption to produce the bags’ image.
Today, color representation exists to analyze different objects by the scanner’s computer and identify these bag items.
The color code identifies organic materials, including water, textiles, wood, and plastics, like orange. At the same time, blue is assigned to non-organic materials like metals.
The image’s darkness shows how thick the item in the bag is, with thicker items absorbing much of the X-ray beams and obstructing its passage to the detector, thereby showing a black image on the detector.
Human beings are not affected by the radiation coming from the scanners, as the exposure to this radiation only lasts very briefly.
When measured, the time of exposure to the X-ray is about a microsievert. You can only compare this to an hour of background cosmic radiation during a flight at an altitude of ten kilometers. X-ray radiation during a dental appointment is even ten times greater than this.
The radiation is still harmless for scanners that are a bit more powerful and used for baggage allocated for the cargo dump.
Also, to arrest any ration leak situation, the lead lining in the tunnel adequately caters for this without the fear of X-rays escaping or the contamination of baggage.
However, one should be careful when carrying photographic films in the baggage. Very sensitive films with high American Standards Association (ASA) numbers have a slight risk of damage.
You should inform the scanning officer of your sensitive film in the baggage or your handbag at the start of the scanning process. Less sensitive films are not in any danger of damage.
It is advisable to comply with an exposure of not more than 0.1 microsieverts during a general-purpose system scanning procedure. However, there is no need to regulate the number of scans for an individual within a year or even the number of people in a group scan.
An individual can undergo up to 2,500 effective scans within a year if the exposure level is not more than 0.1 microsievert per scan. This will mean up to 10 scans per day for an individual if a working year has 250 days.
The accuracy of scanning machines for baggage has been extremely high, with most people wondering how this accuracy level is even possible. The precision of baggage scanners is so apt to detect items like metal and non-metals like inorganic foods. Hence, the smugglers of banned food items are easily caught.
X-ray is the leading technology used by scanners to achieve its objective of contactless baggage search with images of baggage contents. Using the density of a baggage item, an officer can easily identify prohibited items within the confines of a bag. Even when the items’ details are not exact, the denser an object is, the more suspicion it raises, and a further search might be carried out to ascertain baggage content.
Following aviation security guidelines for banned substances carried in both hand luggage and purse is better.
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