Throughput revolution with state-ofthe- art inspection system



Dr Chen Zhiqiang, Associate Professor, Department of Engineering Physics, Tsinghua University and Director of the Institute of Nuclear Technology of Tsinghua University & Peng Hua, General Manag



As the wheels of the global shipping industry spin faster and faster, the needs for high throughput inspection systems are increasing continuously.

Eliminating throughput as the bottleneck of the global supply chain, the THSCAN® FS3000 Fast-Scan Container/Vehicle Inspection System (hereinafter referred to
as the THSCAN® FS3000), a new generation inspection system designed and manufactured by Nuctech, has arrived. Presently, the THSCAN® FS3000 functions reliably and effectively in many countries such as Malaysia, Poland, and the UAE.

The THSCAN® FS3000, based on linear electron accelerator (LINAC) technology, is a revolutionary model compromising extremely high throughput, high penetration and excellent image quality. Differering greatly from other types of THSCAN® inspection systems and counterparts of other manufacturers, any human intervention which may cause the interruption of the traffic flow can be reduced to a minimum.

At speeds up to 15km/hr, the THSCAN® FS3000 supports a drive-through scanning mode with a throughput of over 200 vehicles per hour with excellent image quality. Moreover, the THSCAN® FS3000 can be applied with an integral solution for various functions such as License Plate Recognition (LPR), Container Code Recognition
(CCR), and Radioactivity Monitoring (RM).

Main features

With more than 210 security inspection systems that carry the name and reputation of Nuctech installed in more than 50 countries and regions, Nuctech has become one of the world’s largest suppliers of container security inspection systems. Proficient in providing highly safe and reliable non-intrusive solutions for many years, Nuctech successfully developed the THSCAN® FS3000 which has the following key features:

• Highly safe and reliable non-intrusive: by adopting a low energy (2.5 MeV) linear electron accelerator as the kernel radiation source, the THSCAN® FS3000 has the following outstanding features:

• Extremely low boundary radiation level: the dose leakage is constrained at a stringently low level. The strongest radiation dose rate can not be over 2.5μSv/hr at any point of the exclusion zone boundary, which conforms to the most local or international radiation safety regulations.

• Low absorbed dose: the cargo will absorb no more than 2μSv per scan, so the negative effect is negligible.

• No induced neutrons: it is possible for any X-ray which energy is above 7 MeV to induce the reaction of extracting an ejected neutron from a nucleus inside the atom, which isextremely harmful for humans. However, the 2.5 MeV X-ray is absolutely unable to eject a neutron out.

• Compact footpr int: by virtue of the leading radiation safety measures, the footprint of the FS3000, within which the whole physical structure is placed, is 16m x 7m, only occupying two lanes.

Besides the normal treatment for the radiation protection purpose, an additional technology is complemented to ensure the X-ray can be terminated automatically when the cab passes by the X-ray beam position. Thus, a driver absorbs no more than 0.02μSv dose per scan, which only equals to 0.01 per cent of dose received from a chest fluoroscopy.

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