The upcoming "May Day" holiday will be a small peak for travel. Passengers traveling by plane will inevitably pass the security check. In general, passengers are most often confronted with a series of routine inspections such as passports and metal objects. Actually, airport security is not the case. Below, we will take a look at the level of security, and under what circumstances the airport will raise the security level. Airport security is a necessary part of ensuring the normal operation of flights and maintaining passenger safety. Basically, security inspections are divided into four levels, and the degree of strictness is gradually increased. Level 1 security is something we often encounter, including inspections of passports, metal items and a series of routine inspections. Level 2 security inspections are generally conducted during major events such as the Olympic Games and the World Expo. The secondary security inspection has added an open link to the first-level security, and it requires the opening rate to be no less than 50%. At the same time, the sampling rate for passengers' shoes and belts should not be lower than 30%, and additional security personnel will be assigned to the inspection and boarding gates. The third-level security check is based on the second level and increases the sampling amount by about 10% at the boarding gate. Level 4 security is the highest level of security, 100% of the opening rate, take off the shoes, untie the belt is every passenger must go through the inspection link. In addition, security personnel will re-inspect all passengers at the boarding gate, and security personnel will be added in the air. Then, under what circumstances, the airport will raise the level of security inspections? In general, the level of security inspections will be correspondingly increased in areas where major security incidents or emergencies occur, where conflict is high, and during major celebrations and conferences. For example, during the Shanghai World Expo, Shanghai had carried out high-level airport security inspections for up to six months. Of course, the elevation of the security level will definitely prolong the time for passengers to pass the security check. Therefore, passengers traveling during major celebrations and meetings must arrive early at the airport to prepare for the airport to upgrade security levels so as not to miss the opportunity. Nail Making Machine,High Speed Nail Making Machine,Wire Nail Making Machine,Steel Nail Making Machine Huade Heavy Industry Technology Co., Ltd , https://www.huadeequipment.com