Large truck X-ray security inspection system is a large scanning equipment for container vehicles to check contraband dangerous chemicals Workflow

1. Prepare  

1. Check whether it is equipped with personal protective equipment (such as lead skirt, lead neck, lead glasses, personal dosimeter, personal dose alarm, radiation monitoring instrument, etc.), and check whether it can work normally.  

2, check whether the power supply is normal, check whether the emergency stop button is lifted.  

Step 2 Turn it on  

1. Rotate the training key to the right to the horizontal direction and press the start button;  

Open State Start button  

2. After pressing the start button, the system will automatically enter the operating system interface of the security check program.  Check whether the power indicator is normal.  

Power indicator light  

   

3, after the start of the outdoor security equipment on the green light, representing the security is ready, the operator carefully watched the car security scan image.  

Green light 

3: Work  

1. After the computer automatically enters the security check procedure, the operator can interact with the computer through the microphone  

2, when the speed is too fast, the operator can open the microphone for voice prompt.  

3, when encountering special circumstances, the operator can cut off all power by pressing the emergency stop button.  

Scram key  

4, when the operator needs to EXIT the security check procedure, you can press the exit key and enter 168168 to exit the security check procedure and enter the WIN7 operation interface.  

EXIT Exit 

4 Turn it off  

1, after the completion of the security check, you can achieve one-click shutdown through the shutdown button on the security check program interface, and the security check device will automatically cut off all power after one minute.  

Power Off  

2. Tidy up the control room and the items in the control room, clean up, turn off the lights, turn off the main power supply, close the doors and Windows.  

5. Equipment maintenance  

1, the staff must stick to their posts, responsible for the use, storage, cleaning and maintenance of the machine, keep the machine room clean, do not pile up debris, unrelated personnel must not use the machine without authorization.  

2, the equipment should be carried out regular maintenance (once every three months), inspection.  

   

After the scan is completed, it will be displayed on the display terminal immediately. The operator will judge the cargo loaded on the vehicle according to the display information, that is, whether there is mixed loading or whether there is non-fresh agricultural products loaded, and decide whether to release or unpack the box for further inspection.  

During the detection process, the X-ray collimated into a narrow sheet passes through the carriage and is fed into the array detection device, and the output signal of the detection device is proportional to the X-ray intensity received at the location.  A scanning line of the image is obtained by collecting the signals of each detector and displaying them in sequence.  With the progress of the inspection of the inspected object, the scanning lines of the images of the carriage are displayed sequentially, forming a two-dimensional radiation projection image reflecting the distribution of materials inside the carriage and displaying it on the screen of the inspection room for identification by the inspectors.  After the vehicle is driven away from the detection surface, the scan is finished, and the shutter is automatically closed, waiting for the next detection.  During the whole inspection process, the driver drives slowly through the inspection area. According to the design speed, the X-ray machine emits 2s normally every time, the longest does not exceed 10s, and the driver does not need to get out of the car. 

 
Workflow diagram

Description of pollution source terms
1. Ionizing radiation
When the X-ray device is turned on and working, it can produce X-rays with energy, and does not produce radiation when not turned on.
2. Waste gas
The X-ray device will ionize oxygen in the air during the beam output process to produce ozone. The amount of ozone generated by this project is small and located outdoors, and the chemical properties of ozone are active, so the environmental impact of the generated ozone can be ignored.
3. Wastewater
This system adopts a digital terminal imaging system, which does not involve the use of fixing solution or developing solution, and does not generate cleaning wastewater.
4. Solid waste
This system adopts a digital terminal imaging system and does not involve the generation of solid waste and hazardous waste.
5. Noise
The noise impact during the operation of the equipment in this project is minimal.
Therefore, based on the pollution characteristics of the project, the main evaluation factor is determined to be X during the start-up period- γ Radiation dose rate.

   

Radiation safety and protection

1. Project workplace layout

The radiation box is located on the south safety island of the inspection channel, and the inspection door frame of the detector is located on the north safety island opposite the source box. The linear distance between the radiation box and the column detector is about 5m. The entrance section of the inspection door frame is provided with automatic railings, and the rear is provided with traffic light.

2. Zoning principles and regional division

The unit provides guidance for the zoning management division of the inspection site of the inspection system, and refers to the relevant provisions of the radiation protection Requirements of the Cargo/Vehicle Radiation Inspection System (GBZ143-2015) on the radiation workplace "The inspection system of freight vehicles with drivers, The area on both sides of the radiation source room and the useful harness area that is not less than 1m away from the central axis should be designated as the control area. Areas outside the control area where the ambient dose equivalent rate is greater than 2.5μSv/h are designated as surveillance areas." Determine the zoning of the inspection site of this project: the inspection site shall be managed by zoning, divided into control area and supervision area, and set corresponding marks.

(1) Control area: the detection area between the radiation source and the detector and the detection channel area within the range of 0.5m on both sides, and the radiation dose rate at the boundary of the control area is controlled to be no more than 10μGy•h-1. No personnel shall enter the control area when the system is in working condition.

(2) Supervision area: Check any area within the lane range of 3m on both sides of the door frame, except the control area. The radiation dose rate at the boundary of the surveillance area is controlled to be no more than 2.5μGy•h-1. No person other than the driver of the inspected vehicle and radiation workers shall enter the supervision area when the inspection system is in working condition. Staff should remain outside the supervision area unless required for testing.
 

3, workplace radiation protection shield design

(1) The relevant radiation protection shield design of the X-ray source room is as follows:

Cabinet dimensions: 2400 x 1400 x 2400mm. Cabinet wall: 1-2mm lead equivalent; Collimator: 30mm thick lead drum, center open 2mm wide uniform gap; Shutter: 20mm thick L-type lead-shielded shutter.

(2) Related radiation protection shield design of detector subsystem

The detector subsystem receives the rays after passing through the object being detected, including the column part and the beam part. The back of the detector is shielded by a "J" type lead plate, the width of the shielding body is about 655mm, the back of the detector column is shielded by 30mm lead plate, and the protection on both sides of the column is shielded by 10mm lead plate, and the lead plate is interlaced. The beam protection adopts 5mm lead plate, and the lead plate adopts interlaced form. Ray sector beam Angle: 600. The ray beam is perpendicular to the cabinet shield. The width of the arch is 1000mm, and the arch can effectively shield the fan beam.

 

Radiation safety measures

1. System self-test

Only when the vehicle enters the detection area and the driver's cockpit passes through the fan-beam scanning area, after being induced by the vehicle automatic sensing system on the ground, the safety shutter automatically opens, the fan-beam is emitted, the truck moves in the fan-beam, and the ray beam scans the entire vehicle body.

2. Shielded chamber

Check the system design shielding chamber and install a safety door on the shielding chamber.

3, automatic training machine Settings

Check the system design. The continuous X-ray beam time should not exceed 10s, and the machine should enter the training state regularly. The system must be restarted before it can continue to work.

4. Vehicle position sensing system

Composed of four ground induction coils, it is responsible for detecting the position of the vehicle and ensuring the coordinated and safe operation of the system.

5. Other inherent safety features

When the system is damaged by accidental impact, the X-ray transmitter automatically stops working; When the system automatically detects a lane stop or a broken car, the X-ray transmitter automatically stops working.

6, safety interlock device

1, automatic interlock

The main console has a key switch interlock, and the X-ray machine can emit X-rays only when the key is inserted and in the "work" position. The system design can effectively prevent personnel from straying into the control area under the detection state of the security interlock facilities, personnel straying into the control area automatically cut off the high-voltage power supply, automatically stop the beam. The system is designed with an automatic interlocking device, when the fault occurs, the high pressure is automatically cut off, and the X-ray beam is stopped, effectively avoiding the additional exposure of the staff or the public. When the ground sensing system does not sense the passing of the vehicle, the device cannot be started normally, and the fault details are displayed in the terminal.

2. X-ray safety shutter

The X-ray tube beam exit window is equipped with a lead-shielded safety shutter. If the shutter is not opened when the X-ray beam is emitted, the X-ray is completely enclosed in the X-ray tube without any radiation leakage. When running, the head collision avoidance device detects that the cab of the vehicle passes through the X-ray beam window, the safety shutter opens, and the X-ray beam begins to scan the carriage. When the vehicle leaves the detection area, the safety shutter closes and the X-ray beam stops at the same time to ensure the safety of the driver.

3. Emergency stop switch

The cabinet of the green channel equipment is equipped with a safety switch, and the cabinet and distribution box are equipped with multiple emergency stop switches. The high-voltage power supply, oil cooler, X-ray detector and other equipment have fault alarm signals, and there are emergency stop buttons on the main interface of the operating software. These alarm signals are connected to the hardware, and any abnormal one will cut off the power supply of the high-voltage power supply and stop the X-ray beam. The master will monitor all these abnormal alarm signals and display the alarm cause on the operating software. The emergency stop switch can cut off the impact of X-rays on the environment in an emergency.

4. Video surveillance device

The system has a license plate automatic recognition system, including video surveillance devices, embedded, integrated structure, lighting, image capture, recognition algorithm integration, stop recognition system can effectively identify and record license plates, personnel activities and other information. System installation of anti-theft alarm system, the inspection system to implement 24-hour monitoring.

The monitoring camera device is set up in the radiation workplace to observe the presence of personnel and the operation status of equipment in the radiation workplace.

Through the above safety interlock system can effectively avoid radiation exposure.

5. Safety warning signs

At the entrance of the inspection lane of the inspection system, an eye-catching ionizing radiation warning sign is set on the surface of the radiation source box to warn the surrounding personnel not to approach.

6. Warning system

Install a set of green, red and yellow alarm lights and alarm bells on the inspection system gantry. When the system is powered on, the green alarm light is on; When the X-ray machine is ready to beam out, the yellow alarm light is on and the alarm light is ringing; When the X-ray machine comes out, the red alarm light goes on and the alarm bell rings.

Voice broadcasting equipment

Voice broadcasting equipment should be set up on the inspection system operating platform, and loudspeakers should be set up in the radiation workplace to remind on-site personnel to pay attention to and evacuate the radiation workplace.

Additional requirements for inspection systems for chauffeur-driven freight vehicles

1. The inspection system should set up avoidance and protective measures to avoid the driver from being irradiated by useful wiring harnesses. These measures should include:

a) To determine whether the access inspection channel is a vehicle facility; Only when the permitted type of inspected vehicles enter the inspection channel, the inspection system can be out of the beam; When pedestrians pass through the inspection channel, the inspection system can not be out of the beam;

b) Automatic vehicle position detection facility: check the system process and ensure that the driver's driving position has moved away from the control area before the system can be released;

c) Automatic vehicle speed detection, parking, reversing protection facilities: when the vehicle speed is lower than the minimum speed of uniform speed, as well as parking, reversing, the inspection system can not emit or immediately stop the beam;

d) Beam out time protection measures: Check the continuous beam out time of the system to reach a predetermined value, should automatically stop the beam out.

2. Warning signs

The following warning signs should be conspicuously set up in radiation workplaces:

a) Warning of detectable vehicles or prohibited vehicles: to remind and correctly guide drivers, detectable vehicles can pass normally, and other vehicles are prohibited to pass;

b) Speed limit sign: specify the upper and lower limits of vehicle speed;

c) Keep distance warning: remind the driver of the vehicle to keep a certain distance from the vehicle in front to avoid accidents;

d) "No parking, no reversing", "no people in the box" and other warnings: warn the driver to prevent the personnel in the container from being irradiated by mistake;

e) No walking warning: no irrelevant personnel are allowed to walk through or enter the inspection channel with the car.

In strict accordance with the above radiation protection measures, the project can meet the protection requirements of "Radiation Protection Requirements for Cargo/Vehicle Radiation Inspection Systems" (GBZ143-2015).

Governance of the three wastes

1. Exhaust gas

The X-ray device produces ozone by ionizing oxygen in the air during beam production. The environment of the project is outdoor, and the amount of ozone generated is small, and due to the chemical activity of ozone, the environmental impact of the ozone generated is negligible.

2. Waste liquid

The system adopts digital terminal imaging system, which is displayed on the display terminal immediately after scanning, and does not involve the use of fixing solution and developer solution. The existing office and living facilities of Tongguan toll station shall be utilized.

3, solid waste

The X-ray device of this project adopts digital terminal imaging system, computer imaging, no film development process, no waste X-ray film, equipment maintenance and replacement of waste X-ray tube, by the equipment manufacturer recycling disposal.

Therefore, there is no solid waste, liquid waste and waste gas pollution in this project.

Environmental impact analysis

1. Construction content

IWILDT 48002800 Vehicle inspection system shall be located 50m from the front of the inspection booth. The project adopts the layout of the front square, which includes the embedded pipeline and equipment foundation, the excavation of the existing road surface, the construction of the detection island and the matching of mirrors at the head and tail of the island, the improvement of the detection pavilion equipment, and the corresponding protection facilities.

The construction period of the project is mainly for the installation and safety debugging of the equipment. The installation and debugging of the testing equipment should be carried out by the professional personnel of the equipment supplier. The main pollutants produced during the construction period are construction waste water and domestic waste water of construction personnel, construction dust and construction waste gas, construction waste and domestic waste, noise, soil erosion. Due to the small scale of the project, the amount of civil engineering during the installation of the equipment is small, which will only cause impact in a short time, and the environmental impact of the construction project is limited.

2. Waste water

Wastewater during construction period includes construction wastewater and domestic sewage of construction personnel. The construction wastewater mainly comes from the mud and sand water that washes the site, vehicles and equipment, etc. The construction wastewater contains sediment and solid waste.

In order to reduce the concentration of suspended matter in the construction wastewater and reduce the pollution load of surface water, it is necessary to set up a temporary wastewater sedimentation tank at the construction site to greatly reduce the suspended matter in the sewage, and reuse the supernatant after precipitation of the construction wastewater.

During the construction period, the domestic wastewater generated by the construction personnel's accommodation and accommodation is relying on the toll station management area.

3. Air pollutants

The air pollutants during the construction period mainly come from construction dust and construction waste gas. The amount of dust generated by construction dust is related to many factors, including foundation excavation, backfill, material transportation and construction, and building construction. Construction exhaust gas mainly comes from transport vehicles, and its main pollutants are HC, CO, NOX and so on.

During the construction period, necessary dust suppression measures should be formulated, water should be sprayed regularly, and covering measures should be taken on the surface of the storage yard to reduce the amount of dust. Construction units should standardize the construction and strengthen the management of the construction period.

4, solid waste

The solid waste during the construction period mainly comes from excavation earthwork, construction waste and household waste of construction personnel.

During the construction period, the management of waste should be strengthened, and all earth and rock excavation should be used for backfilling.

Solid waste generated during the construction period shall be collected, stored and disposed of separately. The construction waste and recyclable waste materials and waste packaging bags generated during the construction period should be collected and stored separately, the construction waste shall be transported to the designated place of the construction department, and the waste materials and waste packaging bags shall be sold to the waste recycling company for processing in time.

The disposal of domestic waste generated by construction personnel relies on the toll station management area.

5. Noise

Construction noise mainly comes from construction machinery noise, construction operation noise and transport vehicle noise. Construction machinery noise is generated by construction machinery, such as lifts, excavators, etc., most of which are point sound sources. The noise of construction operation mainly refers to the knocking sound and banging sound in the process of construction, reinforcement and land consolidation, and most of them are instantaneous noise. The noise of transport vehicles belongs to traffic noise.

The main measures to prevent noise during the construction period are as follows: the construction site should use low-noise equipment as much as possible; Choose the time reasonably when the high-noise equipment is used to reduce the impact on the surrounding noise; Strengthen the maintenance and management of construction machinery to ensure that construction machinery is in a good working state of low noise and high efficiency; Measures such as shock absorption, sound insulation and reasonable layout are taken to reduce the impact of mechanical noise on the surrounding sound environment. High noise construction operations at night are prohibited.

6. Soil erosion

During the construction period, the temporary storage yard is set up, and the surface of the storage yard is covered. At the same time, soil backfill should be carried out in time, and surface vegetation cultivation should be carried out on bare land to prevent soil erosion.

During the excavation of earth and rock, it is easy to form soil and water loss in case of rainfall, which will affect the receiving water body. Therefore, the construction party is required to take the following measures when excavating earth and rock: (1) Set drains and sedimentation tanks around the temporary stacking site; In the rainy season, no excavation operations or only small-scale operations are carried out to minimize the accumulation of soil.

The project party shall take the following measures when stacking and removing the earth and rock: (1) The construction contractor shall require the contractor to provide the certification materials of the whereabouts of the abandoned soil when signing the contract with the waste removal company; (2) The excavated earth and rock should be strengthened fence, the surface should be covered, and the project must be strictly required in the transportation process, not dumping the earth at will, and not causing dust to spill and drift.

Impact on the environment during operation

The project IWILDT 48002800 vehicle inspection system, which uses an X-ray machine as the radiation source, the maximum tube current of the X-ray machine is 10mA. The environmental impact generated during the operation of the project is mainly the radiation effect caused by the X-rays generated during the system inspection.

1. Predictive analysis of radiation shielding

IWILDT 48002800 Detector door frame of vehicle inspection system adopts lead plate for X-ray shielding, the back of detector column adopts 30mm, both sides adopt 10mm lead plate for shielding, and the lead plate adopts interlaced form; The cross beams are interlaced with 5mm lead plates.

 
Detector shielding diagram (main view)
 
Detector shielding diagram (top view)
 

The IWILDT 48002800 Vehicle inspection system is designed as a useful harness for shielding X-rays from detector door frames. According to the Radiation Protection Manual, the weekly exposure in the protected area can be calculated as follows:

- X-ray exposure rate at 1m per mA tube current, R/mA▪min; The maximum dose of the main beam is 5000μGy/h when the device is 1m away from the target center.

Weekly working load of W - X-ray machine, mA▪min/ week; W=It, where I is the tube current, mA, t is the weekly working time, min/ week; μ - utilization factor, indicating the extent to which the ray is used, that is, the working coincidence fraction of the useful ray beam pointing to and changing the irradiation point, in the case of horizontal irradiation without changing the direction, the value is 1; η - Occupation factor of the protected area, indicating the time that people stay or live in the protected area. In the case of "full residence", the value is 1; f - Transmittance of the shielding wall to the primary X-ray beam; dp - Distance of X-ray machine to focus, m. In this project, the distance between the X-ray machine and the back of the column is about 5m. For a given shielding material thickness X, the corresponding radiation shielding transmission factor f is calculated according to the formula (11-2) :

X - Thickness of shielding material, the same unit as TVL; The back of the detector column in this project is 30mmpb lead plate; TVL - The thickness of the shielding material, from the Radiation Protection Manual (Part I) can be found: the approximate value of the lead corresponding to the X-ray detection system is about 9.2mm. After the X-ray useful wire harness emitted by the vehicle inspection system is shielded by the detector, the radiation dose rate on the back of the detector column is 0.110μSv/h, and the prediction point there is located at the border of the supervision area. According to the theoretical prediction results, the shielding effect of the detector shield on the useful wire harness can meet the requirement of the radiation dose rate control value of the border of the supervision area is 2.5μGy/h.

As for the X-ray scattered rays and leaked rays, the theoretical calculation is more complicated and difficult due to the influence of parameters such as the shape, distance and location of the passing vehicle, so the radiation level of the environment around the workplace is investigated and inspected by analog monitoring.

3 year effective dose

According to Appendix A of the report of the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) -2000, the annual per capita effective dose equivalent of external exposure from X-ray gamma rays is calculated according to the following formula:

Among them: HEr: per capita annual effective dose equivalent of external exposure to gamma rays, mSv;

Dr: Air absorbed dose rate of gamma rays, nGy/h;

t: Annual irradiation time of gamma rays, hours;

1: Dose conversion factor, Sv/Gy. Take 1.0.

According to the preliminary statistics and expected workload of the construction unit, after the system is put into use, it will be used continuously throughout the year, with an average annual inspection number of 300,000 cars. Each exposure time does not exceed 10s, the maximum annual exposure time is 3000000s, or 833.3h.

1. Staff

Radiation personnel for this project include operators of the IWILDT 48002800 vehicle inspection system and surrounding guidance safety officers. Radiation workers are outside the monitoring area during normal operation, so the maximum value of analog monitoring data (122nSv/h) at the boundary of the inspection system is used to calculate the radiation dose to radiation workers and members of the public. The additional annual exposure dose for staff after the operation of the project is: The maximum value of analog monitoring × working time ×1×10-6=122×36.5×1×10-6=0.004mSv/a, which is lower than the dose limit of 20mSv required by the Basic Standard for Ionizing Radiation Protection and Radiation Source Safety (GB18871-2002) and the dose constraint value of 5mSv implemented in this report form.

The IWILDT 48002800 Vehicle inspection system and the existing Green Channel inspection system have a maximum annual exposure dose of 1.604 mSv/a, This is lower than the dose limit of 20mSv required by the Basic Standard for Protection against Ionizing Radiation and Safety of Radiation Sources (GB18871-2002) for workers and the dose constraint value of 5mSv implemented in this report form.

2. Public personnel

The areas for public activities are outside the supervision area, and there are basically no fixed activity personnel. They are temporary residents, and the resident factor is 1/16. After the operation of this project, the annual additional dose of exposure to the public is as follows: Analog monitoring maximum × working time ×1×10-6× (1/16) =122×833.3×1×10-6× (1/16) =0.006mSv/a, This is lower than the dose limit of 1mSv required by the General Standard for Protection against Ionizing Radiation and Safety of Radiation Sources (GB18871-2002) and the dose constraint value of 0.25mSv implemented in this report form.

3. Vehicle driver

The system ensures the safety of the driver of the vehicle under test through the linkage work of the ground induction coil and the X-ray safety shutter. When the passing vehicle presses the ground induction coil 3, the front of the vehicle has passed the monitoring area at this time, and the inspection system sends out a beam instruction X-ray machine to start the high voltage to generate X-rays, and then the inspection system opens the X-ray safety shutter to scan the truck compartment. According to the analog monitoring data, when the X-ray shutter is opened, the highest radiation dose rate of the driver's position is 63.7nSv/h. As the vehicle continues to move forward and the distance increases, the radiation dose rate of the driver's position gradually decreases until the shutter is closed, a process of about 10s, then every time the driver passes through the inspection channel, the driver will be exposed to the radiation. The maximum dose received by individuals is about 0.18×10-3μSv, which meets the standard limit requirements of the "Radiation protection requirements for cargo/Vehicle radiation inspection Systems" (GBZ143-2015) "For the inspection system of freight vehicles with drivers, the ambient dose equivalent passed by the driver should not be greater than 0.1μSv". If a driver passes the lane 30 times a month, 360 times a year, the driver's annual exposure dose is 0.06mSv/a. The maximum annual radiation dose received by the vehicle driver during the use of the green channel vehicle inspection system is 0.06mSv according to the design dose. This is lower than the dose limit of 1mSv required by the General Standard for Protection against Ionizing Radiation and Safety of Radiation Sources (GB18871-2002) and the dose constraint value of 0.25mSv implemented in this report form.

The above estimation is only theoretical calculation. In practical application, the exposed dose of the staff shall be based on the test result of the personal dose worn.Radiation safety management
 

1. Setting of radiation safety and environmental protection management agencies

In order to do a good job of radiation safety and protection management in the process of work, prevent radiation pollution of the environment, protect public health, and reduce the occurrence of accidental exposure accidents caused by human factors, In accordance with the relevant provisions of the Regulations on the Safety and Protection of Radioactive Isotopes and Radiation Devices, the Measures for the Administration of Safety Licensing of Radioactive Isotopes and Radiation Devices, the Measures for the Safety and Protection of Radioactive Isotopes and Radiation Devices, and the requirements on "operation management" in the Basic Standards for Ionizing Radiation Protection and Radiation Source Safety, The construction unit shall formulate the corresponding radiation safety management system.

Regulatory agency for radiation safety and environmental protection

In accordance with the Environmental Protection Law of the People's Republic of China, the Regulations on the Safety and Protection of Radioactive Isotopes and Radiological Devices and other relevant laws and regulations and national standards, in order to strengthen the supervision and management of the safety and protection of radiological devices, promote the safe application of radiological devices, and correctly respond to sudden radiation accidents, To ensure that on-site emergency treatment and disposal can be carried out quickly and effectively after the accident, and to maintain and protect the life safety and property of the staff and the public, a relevant radiation protection leading agency should be established, with a radiation safety and protection management team under it, which is fully responsible for the management and leadership of radiation work, unified leadership and unified command.

The main responsibilities of the Radiation Protection Leading Group are:

(1) Be fully responsible for radiation safety management;

(2) Conscientiously study and implement relevant national laws, regulations and standards, formulate safety rules and regulations combined with the characteristics of the actual work, and inspect and supervise the implementation;

(3) Responsible for the regulation education and safety and environmental protection knowledge training of all radiation workers; Arrange radiation workers engaged in radiation installation work to participate in the assessment of radiation safety and protection training organized by the provincial Nuclear Safety Administration;

(4) Inspect radiation safety facilities, carry out radiation safety and environmental protection monitoring, and conduct an annual assessment of the safety and protection of the use of radiation devices;

(5) Carry out the health examination of radiation workers and do a good job in the file management of medical data;

(6) Establish and improve post responsibilities, emergency plans for radiation accidents and other relevant radiation safety management systems, prepare emergency plans for radiation accidents, and properly deal with all possible radiation accidents;

(7) Regularly report safety work to environmental protection and competent authorities, and accept the inspection guidance of environmental protection supervision and monitoring departments.

 

2. Staffing and functions

According to the requirements of Article 16, paragraph 2, of the Measures for the Safety Licensing of Radioactive Isotopes and radiation Devices, personnel engaged in radiation work must pass the training and assessment of professional knowledge of radiation safety and protection and relevant laws and regulations. According to the requirements of Article 28 of the Regulations on the Safety and Protection of Radioactive Isotopes and Radiation Devices, units that produce, sell and use radioactive isotopes and radiation devices shall educate and train the professional personnel directly engaged in the production, sale and use of safety and protection knowledge, and conduct assessment; Those who fail the assessment shall not be allowed to take up their posts.

The construction unit shall arrange radiation workers to receive relevant radiation safety and protection knowledge training and obtain corresponding certificates before taking up their posts. Radiation workers should have professional knowledge of radiation protection, be familiar with the rules and regulations of radiation protection, be familiar with the working process of the equipment, be serious and responsible for the work, and follow the safe operating procedures in actual operation.

3, radiation protection facilities, equipment and protective supplies and monitoring instruments

The construction unit has equipped the project with 35 personal dosimeters, 1 lead protective suit, 1 lead glasses, 1 lead cap, 1 lead gloves, 1 lead neck, 1 lead pants, and 3 RAD-35 personal radiation dose alarm meters. The equipped monitoring instrument is one NT6101 xis-gamma radiation dose rate meter/inspection meter. The equipment whose model has been clearly defined is the equipment that the construction unit has reached the purchase intention with the equipment manufacturer.

In the specific work, the construction unit also needs to do:

(1) Regularly monitor the dose in the radiation workplace, mainly in the demarcated supervision area and control area, and find out the cause in time and improve radiation protection measures once the X-γ dose is found to be too high;

(2) Equipped with appropriate protective equipment, check the protective effect of personal protective equipment once a month, and replace the protective equipment in time if the protective equipment is damaged;

(3) Radiation workers must wear a personal dosimeter and a personal dose alarm device at work, and those who do not wear a personal dosimeter cannot work;

(4) Regularly check the dose monitor so that it is in good working condition.

(5) At least one personal dosimeter for each radiation worker.

4、辐射安全管理规章制度

根据《放射性同位素与射线装置安全许可管理办法》中第十六条第六款的要求，使用射线装置的单位应当具备有健全的操作规程、岗位职责、辐射安全和安全保卫制度、设备检修维护制度、人员培训计划、监测方案等。
建设单位已制定《辐射安全岗位职责》，《辐射防护与安全保卫制度》、《安全操作规程》、《辐射工作人员安全培训制度》、《辐射事故预防措施及应急处理预案》，这些制度具有实际操作性，但还应根据国家相关法律法规，并结合项目内容情况，进行完善。建设单位还需制定《辐射安全与环境保护管理机构》、《设备检修维护制度》、《人员培训计划》、《监测方案》等规章制度。

5、辐射监测

根据国家相关法律法规要求，开展辐射工作的单位应当对其设备性能、工作场所防护以及放射工作人员职业受照情况定期开展自主或者委托监测，以保障辐射工作的正常开展以及人员的健康和安全。建设单位根据要求制定以下辐射监测计划，能够满足国家相关要求。

6、个人剂量监测

从事放射工作的人员须佩戴个人剂量计，记录个人受照射剂量情况。建设单位应定期委托有资质的单位对辐射工作人员进行个人剂量监测（监测周期一般为30天，最长不应超过90天），并按照《放射性同位素与射线装置安全和防护管理办法》和《职业性外照射个人监测规范》的要求建立个人剂量记录及监测档案管理制度，并对职业照射个人监测档案终生保存。
建设单位应定期对辐射工作人员进行职业健康体检（1次/年），建立职业健康监护档案，并为工作人员保存职业照射记录。

7、辐射环境监测

（1）自行监测
建设单位需利用自备的辐射剂量检测仪对辐射源箱泄露辐射水平和场所进行定期定制度监测，并建立档案。
（2）委托监测
建设单位应委托有资质的单位定期（每年常规监测一次）对设备周围环境进行辐射环境监测，并建立监测技术档案。监测数据每年年底向当地环保局上报备案。
（3）监测报告
1）监测范围：射线装置50m范围内、人员活动位置处等。
2）监测项目：X-γ辐射剂量率。
3）监测记录应清晰、准确、完整并纳入档案进行保存。

8、设备性能监测

根据国家标准要求，建设单位应委托有资质的技术服务机构对车辆检查系统进行设备性能检验，设备投入运行前进行一次验收监测，投入运行后每年进行一次状态检测。
建设单位应制定严格的设备定期检查和安全检查及维修管理制度，并严格执行，以确保设备能正常的运行。设备检查维修制度中应包括每天检查出束控制开关，门联锁，紧急停束装置，监视、声光报警安全装置和辐射监测仪表；并包括适时检查其他安全装置，如设备性能，监视和通讯装置等内容。
9、辐射事故应急
为有效防护、及时控制放射事故所致的伤害，加强射线装置安全监测和控制等管理工作，保障放射相关工作人员以及装置周围人员的健康安全，避免环境辐射污染，根据《放射性同位素与射线装置安全和防护条例》（国务院令第449号）、其它有关法律、法规的规定和职能管理部门要求，建设单位需结合系统的实际情况，完善《放射事故应急预案》。
对突发放射性事故，建设单位需坚持以预防为主，常备不懈的方针，建立和加强相应的监测、应急制度，做到及时发现、及时报告、快速反应、及时控制。建设单位同时应具备应急反应机制和应急处理能力，实现应急工作的科学化、规范化。管理中心应从经费、物资、人员和技术人员方面做好准备工作，定期进行培训，演练以应急时之需。辐射事故应急救援预案应根据本报告表对事故分析情况，进行有针对性的补充完善。今后在预案的实施中，建设单位应根据国家发布的新的相关法律法规内容，结合检查工作的实际情况对预案做补充修改，使之更能辐射实际需要。

 十四、建议和承诺

建议单位认真做好以下几项工作：
（1）建设单位应完善并落实各项管理制度，加强工作人员管理；建立作业运行、辐射环境监测记录、个人剂量管理及维修记录制度，并存档备查。
（2）从事辐射工作的工作人员要做到持证上岗，建设单位应定期对工作人员进行辐射防护知识的培训和安全教育。建设单位应委托有资质的单位定期监测辐射工作人员的个人剂量。从事辐射工作的工作人员应定期进行身体健康体检并形成制度。
（3）作业时至少2名操作人员同时在场，从事辐射工作人员需配备个人剂量计和个人剂量报警仪；建设单位应配备辐射环境监测仪器，对射线装置周围的辐射剂量进行定期监测。
（4）建设单位应不断提高工作人员素质，增强其辐射防护意识，尽量避免发生意外事故；应加强对工作人员和公众的辐射防护知识宣传教育，提高其自身安全防护意识。
（5）建设单位应加强对仪器设施的日常管理、维护保养工作，保证其功能有效可靠。建设单位应定期对系统的配件、机电设备和监测仪器，特别是安全连锁装置、报警系统进行检查、维护并及时更换部件。
（6）建设单位应定期进行事故应急演练，检验应急预案的可行性、可靠性、可操作性，不断的完善事故应急预案。
（7）建设单位应根据国家及地方最新出台的法律法规，对辐射相关制度进行更新完善。

十五、技术培训方案

培训的目的是训练系统操作员,通过训练后使他们能够熟练的操作本系统，并能处理一些基本故障。培训分两个阶段进行，培训人员约2人。对此次工程进行2人/次的免费培训。培训的两个阶段分别为:
1、 基础培训
这项培训在贵单位进行，培训的主要内容包括:
·安检软件系统操作基础知识

1. 操作系统
2. 系统基本原理、总体设计、组成
3. 系统操作程序及管理
4. 系统软件操作
5. 各种相关设备的技术条件、使用、操作

·基本工作原理
·监控软件的工作系统的操作程序
·系统的日常维护与安全注意事项
这项培训安排在模拟系统组建完成后进行。
2 、现场培训
这项培训着重培训操作员对系统的操作与问题的处理，培训的主要内容包括:
·设备在系统中的作用及正确使用方法
·设备的检查、调整及测试，常用测量仪表和仪器的使用方法
·设备的接地与防雷
·显示信息的日常维护
·简单的软件故障处理
·简单的硬件故障处理
·遇故障无法自行处理的应急措施
·系统日常维护、保养、管理、使用
·参加安装
3 、培训实用的设施、培训教材、资料
（1）培训使用的设施包括：计算机、车辆检测系统所有设备；
（2）培训教材及资料包括：
          a、设备及系统说明书、原理图
b、系统连线图
c、软件系统说明书
d、操作维护说明书
e、产品说明书
f、非本公司生产的设备原厂说明书
培训地点在施工现场，培训内容随系统安装调试一起进行，要求系统操作员一起参与系统软硬件的安装与调试。
4、 培训效果与考核
考察培训效果将由两方面组成：
（1）学员提供培训报告，详细说明培训内容及掌握程度；
（2）独立实际操作车辆安检系统及处理故障。
整个技术培训最终目的是：保证IWILDT™ AN-48002800大型车辆安检系统安全、正常地运行。
 
 

十六、工程进度及验收

1．待甲乙双方签定合同，乙方收到甲方预付款后，乙方应在90日内按甲方要求完成全部的安装、调试工作，并交付甲方初步验收。
2．IWILDT™ AN-48002800大型车辆安检系统现场安装、调试完毕后的两天内，甲方应对整个IWILDT™ AN-48002800大型车辆安检系统工程进行验收，验收标准依据本合同各项条款规定及固定式车辆检测系统技术规范。
3．IWILDT™ AN-48002800大型车辆安检系统验收合格以前的所有控制操作必须由乙方完成，X光实时安检采集的图像仅限于测试，不作为它用。
4．验收合格后应填写IWILDT™ AN-48002800大型车辆安检系统工程验收报告，并由双方代表在验收报告上签字盖章。
5．甲方无正当理由在IWILDT™ AN-48002800大型车辆安检系统安装调试完毕后的七天内不对工程进行验收，视为验收合格。
6．若甲方未按合同规定的工程期限提供安装场地和条件，造成工程不能按期完成，乙方不承担工程逾期的责任。待合同规定工期期满后，视为安装完毕，甲方应按合同有关条款向乙方支付工程费用。
   
 

十七、售后服务承诺及方案

1 . 承诺

1. 乙方负责对IWILDT™ AN-48002800大型车辆安检系统进行终身维护、X光探测系统硬件免费维修一年（自IWILDT™ AN-48002800大型车辆安检系统安装并验收合格后起算），质保期之后乙方只收取维修成本费；IWILDT™ AN-48002800大型车辆安检系统外围设备的质保期执行供应商的相应规定。
2. 若IWILDT™ AN-48002800大型车辆安检系统本身出现问题，乙方在接到甲方通知1小时内响应，承诺在2小时内到达并在4小时内解决问题；发生故障时可以在1小时内响应，承诺在3小时内到达并在6小时内解决所有问题。此前甲方应向乙方以书面形式（传真）说明所出现问题的基本情况，以便乙方进行准备。
3. IWILDT™ AN-48002800大型车辆安检系统使用中由于甲方使用不当造成的问题及意外情况造成的损失，乙方可协助甲方进行解决，但相关费用由甲方负责。

对于贵单位IWILDT™ AN-48002800大型车辆安检系统来讲，我们为满足其高可靠性要求，和在保证工程高质量的同时，更重要的是对于在系统完成后如何向用户提供全面的技术支持和完善的售后服务，如快捷的响应、现场维护、定期检修保养、充足的备品备件以及专业技术服务队伍等各方面。对此，我们做了充分的安排。

2. Scheme

1, professional on-site service

According to the actual situation of your unit, we promise to provide on-site service as far as possible during the system warranty period, regardless of the size of the fault, and send experienced professional and technical personnel to the site, responsible for on-site engineering design and equipment installation, debugging and fault diagnosis and elimination.

 

2, provide free equipment warranty service

We promise to provide one year free warranty and lifetime tracking service for the equipment we provide. During the warranty period, for any non-human causes of equipment defects or damage, we are responsible for timely replacement or repair free of charge. After the warranty period, we only charge the cost.

3, hotline contact and quick response

After receiving the notice from your unit, we require the after-sales service personnel to respond within one hour and rush to the scene within two hours. In case of special circumstances, the project leader must also arrive at the scene for command and coordination. Shorten the time from fault reporting to normal operation as much as possible. For the damaged parts replaced by spare parts, repair or replace them within no more than 6 hours, so that they are in good standby state.

4, spare parts supply

In order to ensure the implementation of effective warranty maintenance services for the system and minimize system downtime, we keep a certain number of spare parts and spare parts in stock at all times. During the service life of the equipment, ensure that the buyer can buy the necessary wearing parts and other spare parts within 2 days.

5, regular maintenance services

In addition to timely response to the failure notification of your management department, we will also develop a regular maintenance service system, regular inspection: ensure that no less than 4 times a year on-site maintenance service.

 

6, the company's after-sales service commitment

In order to enable users to obtain active, quality system guaranteed services and technical support, our company has a localized service agency, has the ability to provide a stronger guarantee for the after-sales service of this project and makes the following commitments:

 

After-sales service

1. Our company implements "three guarantees" for the goods provided by ourselves. 2, the free warranty period is one year after the completion of the project acceptance; 3, During the warranty period, we are responsible for the maintenance and maintenance of all equipment stipulated in the contract, any equipment or parts caused by product design, installation process, materials, product quality and parts damage, after receiving the buyer's notice, free replacement and repair; 24 Service hotline: 400-090-3790 4, provide lifelong maintenance, failure outside the warranty period only charge cost; 5, our company to provide users with spare parts, accessories, special tools at prices lower than the market price; 6, our company is equipped with quality maintenance hotline, reliable and convenient contact; If the display fails, our company's technical personnel ensure that the timely departure to the scene maintenance, to provide users with efficient quality service. Our company guarantees the supply of maintenance spare parts within 5 years. 7, During the "three guarantees" period, the user in normal use, due to the quality of the components selected by the display screen and its supporting equipment caused damage to the display screen and can not be used normally, we promise to replace the new screen free of charge. 8. During and after the "three guarantees" period, our company carries out a follow-up maintenance and maintenance of the goods in the first ten days of each month, and only charges the cost of production. 9, When the display system has major activities, we send enough technical personnel to the site for maintenance services to ensure the normal operation of the system. During the warranty period, free maintenance; After the warranty period, only the cost of maintenance is charged. 10, goods delivery acceptance, if similar goods have been upgraded, our company timely feedback to users, according to user requirements of the system software for free upgrade services.