Standard Operating Procedure: Security X-Ray Inspection System

This Standard Operating Procedure (SOP) outlines the mandatory protocols for the safe and effective operation of the X-Ray Inspection System. The objective of this procedure is to ensure the continuous security of the facility while maintaining strict compliance with radiation safety standards and operational efficiency. All personnel operating this equipment must hold a valid certification for radiation safety and have completed site-specific training.

Pre-Operational Checks

• Safety Interlock Inspection: Verify that all lead curtains are intact, undamaged, and hanging flush with the conveyor belt.
• Emergency Stop Test: Depress the emergency stop button on both the entry and exit sides to ensure the conveyor belt halts instantly.
• System Integrity: Check the exterior housing for any visible damage or signs of unauthorized tampering.
• Hardware Initialization: Power on the system and confirm the monitor displays the start-up sequence without reporting any "Generator" or "Sensor" errors.
• Warning Indicators: Ensure the "X-Ray On" indicator light (typically red) is functional and illuminates when the system is actively emitting radiation.

Operational Procedures

• Personnel Readiness: Ensure the operator is positioned at the monitor station with a clear view of the conveyor belt entry point.
• Item Placement: Place items flat on the conveyor belt. Do not stack items excessively, as this may obscure dense materials.
• Scanning Protocol: Start the conveyor belt. Monitor the screen for suspicious items (e.g., weapons, explosives, liquids, or prohibited electronics).
• Threat Identification: Utilize image enhancement tools (e.g., organic/inorganic stripping, high-contrast, or zoom) to inspect suspicious areas.
• Resolution: If a threat is detected, press the "Stop" button immediately. Follow the facility-specific "Suspicious Item Protocol" to escalate the situation to security management.

Post-Operational Procedures

• Clearance: Ensure the conveyor belt is completely empty of all bags, trays, and debris.
• System Shutdown: Initiate the standard software shutdown process. Do not disconnect power until the software indicates the system is safe to power down.
• Key Security: Remove the operator key (if applicable) and store it in a designated, secure lockbox.
• Documentation: Record the number of items scanned and any notable security incidents in the daily equipment logbook.

Pro Tips & Pitfalls

• Pitfall - The "Tunnel Vision" Trap: Operators often suffer from fatigue after 30 minutes of continuous scanning. Rotate positions every 30–45 minutes to maintain high vigilance.
• Pro Tip - Contrast is Key: Do not rely on "Standard" view alone. Toggle between organic/inorganic modes frequently to identify potential explosives disguised as common items.
• Pitfall - Blind Spots: Never lean over the entry or exit tunnels to reach for a bag. Always wait for the bag to fully emerge from the lead curtains.
• Pro Tip - Orientation Matters: If an object is unclear, rotate it 90 degrees and rescan it to get a different perspective of the item’s internal components.

FAQ

Q: How often should the X-Ray system be calibrated for radiation leakage? A: Radiation safety surveys must be performed by a certified health physicist annually, or immediately following any major maintenance or relocation of the machine.

Q: Can I scan food or medicine through the X-Ray machine? A: Yes. X-ray inspection is safe for food, medical supplies, and film. The radiation dose is insufficient to cause physical or chemical changes to these items.

Q: What should I do if the conveyor belt jams? A: Press the Emergency Stop immediately. Do not attempt to clear the jam with your hands while the system is powered on. Use a non-conductive tool to nudge the item if necessary, or contact maintenance if the item is wedged deep inside the tunnel.