Security inspection is a critical component of port security, carried out by immigration officers to ensure the safety of passengers. It serves as a preventive measure to protect individuals from potential threats. Since it directly affects personal safety, every passenger must go through this process before boarding an aircraft. This means that no one is exempt from security checks. Recent examples, such as enhanced screening at Capital Airport and increased security measures at Nanjing Metro, highlight the growing importance of these procedures in safeguarding public life.
So, what should contractors consider when purchasing inspection equipment, and what should users be aware of during a security check?
**What performance should contractors focus on when purchasing security doors?**
According to the Chinese National Standard GB15210-94, pass-through metal detection gates are designed as adult-sized doors that generate an electromagnetic field. When a person carrying metal items passes through, the device triggers an alarm. However, the effectiveness of these devices can be influenced by issues like false alarms and missed detections. False alarms occur due to poor interference resistance, while missed detections happen when the sensitivity is insufficient.
A high-performance metal detector door should have the following features:
1. Strong security functions
2. High identification accuracy
3. Excellent immunity against noise and interference
4. Proper detection coverage
Additionally, ease of use, practicality, and long-term stability are also important factors to consider.
**What should buyers pay attention to when purchasing a security door?**
First, shock resistance: The door should not trigger continuous alarms when shaken. Stability and anti-interference capability are crucial for normal operation. Poorly made doors may falsely alarm even when no one is passing through, which disrupts the process.
Second, sensitivity: A good door should detect small metal objects, such as pins, throughout the entire area, not just near the edges. Many manufacturers claim to detect small items, but often fail in the middle section.
Third, certifications: Security doors must have proper licenses and quality certifications, including CE for exports. Buyers should verify these documents before making a purchase.
Fourth, detection accuracy: The system should automatically count the number of people and alarms. Mismatches may indicate missed reports or system flaws.
Fifth, stability: A reliable door should consistently detect metal objects without missing or over-reporting. Poor-quality systems may fail under pressure.
**What should users keep in mind when passing through a security gate?**
Airport and station security aims to prevent dangerous items from being brought onto vehicles. At airports, the basic process includes removing coats and metal items, walking through the metal detector, and possibly undergoing manual checks with handheld detectors. Some airports now use body scanners, such as millimeter-wave or backscatter machines.
Passengers may also need to remove their shoes for X-ray screening. These measures are typically implemented in response to global events or security threats.
For carry-on baggage, passengers are usually asked to remove laptops and liquids, place them separately, and pass them through X-ray machines. Suspicious items may undergo further inspection.
Lastly, concerns about the impact of security doors on pregnant women are unfounded. Magnetic fields used in these devices are considered safe, and they meet international safety standards. Pregnant women are generally advised to avoid flying after 35 weeks of pregnancy due to medical reasons, not because of the security process itself.
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