Nuclear power station operation radiation risk monitoring system and method

Abstract

The invention discloses a nuclear power station operation radiation risk monitoring system and method, and relates to the technical field of nuclear power station radiation protection, and the system comprises a server which is used for automatically loading nuclear power station operation data of which the work permission takes effect, and carrying out the screening according to the radiation risk level and the time priority, and obtaining the nuclear power station operation which needs to be emphatically supervised; the supervision device is electrically connected with the server, is installed on a nuclear power station operation site needing to be intensively supervised, and is used for collecting site supervision information of nuclear power station operation needing to be intensively supervised and uploading the collected site supervision information to the server; and the server is also used for judging the collected field supervision information according to the protection measures corresponding to the field supervision information to obtain corresponding rectification requirements. The nuclear power station field operation radiation safety risk can be supervised in real time, field radiation protection personnel are reminded to pay attention and prepare, key radiation work supervision links cannot be omitted, and the radiation safety supervision work efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power plant radiation protection, and in particular to a nuclear power plant operation radiation risk monitoring system and method. Background Art

[0002] Safety is the lifeline of the nuclear industry. During the entire operation cycle of a nuclear power plant, it is very important to ensure that radiation safety is under control. Factors such as management defects, unsafe conditions of objects, unsafe conditions of the environment, and unsafe behavior of people will bring risks and challenges to the safe, stable and reliable operation of nuclear power plants and the health of personnel. Therefore, it is extremely important to further strengthen radiation risk monitoring in power plants.

[0003] In the radiation safety supervision and management of currently operating nuclear power plants, the main way for radiation protection personnel at power plants to obtain on-site radiation information is to query the ongoing nuclear power plant operation data. This method has shortcomings such as missing key radiation work supervision links, low efficiency of radiation safety supervision, and failure to promptly rectify the situation at the maintenance site. Summary of the invention

[0004] The embodiment of the present invention provides a nuclear power plant operation radiation risk monitoring system and method, which solves the problems of missing key radiation work supervision links, low radiation safety supervision efficiency and failure to timely rectify the maintenance site conditions in the existing method of obtaining radiation information.

[0005] The present invention provides a nuclear power plant operation radiation risk monitoring system, comprising:

[0006] An operations database for storing data on nuclear power plant operations for which work permits have been issued;

[0007] The server is electrically connected to the operation database, and is used to automatically load the operation data of the nuclear power plant for which the work permit has taken effect, and screen according to the radiation risk level and time priority to obtain the nuclear power plant operations that need to be focused on supervision; the nuclear power plant operation data includes work content, unit number, risk level, planned start time, planned completion time, number of workers, working hours, personal daily dose, personal dose, collective dose, radiation control point, radiation risk, protective measures and team information;

[0008] A monitoring device, electrically connected to the server, installed at a nuclear power plant operation site that needs to be monitored, for collecting on-site monitoring information of the nuclear power plant operation that needs to be monitored, and uploading the collected on-site monitoring information to the server; the on-site monitoring information includes the layout information of the isolation area, the site dose rate information, the personnel safety behavior information, the personnel protection measures information, and the radiation risk work link information;

[0009] The server is further configured to judge the collected on-site supervision information according to the protection measures corresponding to the on-site supervision information, obtain corresponding rectification requirements, and send the rectification requirements to the supervision device.

[0010] Preferably, the radiation risk level is divided by radiation zoning, the predicted site dose rate R, the predicted individual daily dose D, and source-related operations, including Level 1 high risk, Level 2 high risk, Level 3 medium risk, and Level 4 low risk; among them,

[0011] For Level 1 high risk, the radiation zoning is the red zone, the predicted site dose rate is 10 < R ≤ 60, and the predicted individual daily dose is 2 ≤ D < 4;

[0012] For Level 2 high risk, the radiation zoning is the orange zone, the predicted site dose rate is 1 < R ≤ 10, the source-related operation is an operation using a mobile radiation source of Class IV or above, and the predicted individual daily dose is 0.5 ≤ D < 2;

[0013] For Level 3 medium risk, the radiation zoning is the red zone, the predicted site dose rate is 0.1 < R ≤ 1, the source-related operation is an operation using a Class V mobile radiation source, and the predicted individual daily dose is 0.1 ≤ D < 0.5;

[0014] For Level 4 low risk, the radiation zoning is the red zone, the predicted site dose rate is 0.001 < R ≤ 0.1, the source-related operation is an operation using an exempt source, and the predicted individual daily dose is D < 0.1.

[0015] Preferably, the supervision device includes:

[0016] A camera module for collecting video and picture information of the nuclear power plant operation site;

[0017] A radiation detection module for collecting the radiation level information of the nuclear power plant operation site;

[0018] A wireless router module for providing a wireless network signal to the nuclear power plant operation site;

[0019] An audible and visual alarm module for alarming abnormal radiation levels and abnormal behaviors;

[0020] A voice module for two-way communication regarding radiation safety reminders or radiation protection technical support during remote radiation safety supervision;

[0021] An operating system module for updating and iterating the built-in information of the supervision device.

[0022] Preferably, the server is further configured to judge the collected on-site supervision information according to the protection measures corresponding to the on-site supervision information, obtain corresponding rectification requirements, including:

[0023] When the layout of the isolation area does not meet the conditions for starting work, it needs to be rearranged;

[0024] When the site dose rate is greater than the set value, the radiation hotspots of the site need to be shielded or removed;

[0025] When there are irrelevant people staying near the hot spot or the standby personnel are on standby at the site, the irrelevant people need to be persuaded to leave or the standby personnel need to stand by in the low-dose area;

[0026] When there is a radiation risk in the work process, air pollution sampling is required to ensure normal operation.

[0027] Preferably, it also includes:

[0028] Staff database, used to provide staff information;

[0029] The AI ​​video behavior analysis module is electrically connected to the monitoring device and includes:

[0030] Object recognition system, used to identify items at the nuclear power plant operation site;

[0031] Behavior recognition system, used to identify whether the operation behavior of radiation maintenance workers at the nuclear power plant operation site complies with the regulations;

[0032] Face recognition systems, used to capture faces and analyze their identities;

[0033] When the behavior recognition system identifies that someone in the scene has triggered an abnormal behavior alarm, when the object recognition system identifies that someone in the scene has triggered an abnormal alarm, it immediately captures the person's face and analyzes their identity.

[0034] A method for monitoring radiation risk of nuclear power plant operations, comprising the following steps:

[0035] Automatically load the operation data of nuclear power plants with effective work permits, and screen them according to the radiation risk level and time priority to obtain the nuclear power plant operations that need to be focused on; the nuclear power plant operation data includes work content, unit number, risk level, planned start time, planned completion time, number of workers, working hours, personal daily dose, personal dose, collective dose, radiation control point, radiation risk, protective measures and team information;

[0036] Collecting on-site supervision information of nuclear power plant operations that require key supervision, and uploading the collected on-site supervision information to the server; the on-site supervision information includes isolation area layout information, site dose rate information, personnel safety behavior information, personnel protection measures information, and radiation risk work link information;

[0037] The collected on-site supervision information is judged according to the protective measures corresponding to the on-site supervision information to obtain corresponding rectification requirements.

[0038] Preferably, it also includes:

[0039] The nuclear power plant operation site shall carry out rectification according to the rectification requirements and confirm that the rectification is completed;

[0040] Make judgments on the nuclear power plant operation site after rectification;

[0041] Determine whether the current radiation control point is completed according to the work progress, and if completed, supervise the next radiation control point; the nuclear power plant operation includes multiple radiation control points.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] The present invention first constructs an operation database for storing nuclear power plant operation data for which work permits have been effective. Then, the server screens the nuclear power plant operations by radiation risk level, obtains the operations that need to be focused on, arranges radiation safety supervision devices on site, conducts real-time supervision of the situation on site, and uploads the supervision situation to the radiation protection supervision platform server. According to different radiation protection measures, the supervision situation of different radiation control points is judged, rectification requirements are obtained, and the completion of the overall operation is determined. The present invention realizes intelligent and real-time supervision of the radiation safety risks of nuclear power plant site operations, reminds on-site radiation protection personnel to pay attention and prepare, does not miss key radiation work supervision links, effectively improves the efficiency of radiation safety supervision work, can make timely rectifications according to the situation on site, reduces the radiation safety hazards of on-site operations, reduces the exposure dose of personnel, and improves the radiation safety management level of nuclear power plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 The present invention is a flow chart of a monitoring method of a nuclear power plant operation radiation risk monitoring system. DETAILED DESCRIPTION

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0047] The present invention provides a nuclear power plant operation radiation risk monitoring system, including: a radiation protection supervision platform server (server), a staff database, a radiation work permit database (operation database), an AI video behavior analysis module, and a radiation safety supervision device (supervision device).

[0048] The AI video behavior analysis module includes a behavior recognition system, a face recognition system, and an object recognition system. It is used to analyze and process the received video stream data, judge whether the monitored area meets the radiation safety standard requirements, and issue an alarm signal. When the behavior recognition technology recognizes an alarm for an abnormal behavior triggered by someone in the scene, and when the object recognition technology recognizes an alarm for an abnormal behavior triggered by someone in the scene, it immediately captures the face and analyzes its identity.

[0049] The operation database is used to store the nuclear power plant operation data for which the work permit has come into effect.

[0050] The server is electrically connected to the operation database. The server is used to automatically load the nuclear power plant operation data for which the work permit has come into effect, and screen according to the radiation risk level and time priority to obtain the nuclear power plant operations that need to be key supervised; the nuclear power plant operation data includes the work content of the operation, unit number, risk level, planned start time, planned completion time, number of workers (man), working hours (h), personal daily dose (mSv), personal dose (mSv), collective dose (man·mSv), radiation control points, radiation risks and protection measures, team information, etc., and transmits them to the supervision device.

[0051] The radiation risk levels are divided into high risk, medium risk, and low risk. The operations with high risk and medium risk are assigned to the radiation safety supervision device according to the radiation risk level. The radiation safety risk data includes: radiation zoning, expected site dose rate R (mSv / h), expected personal single-day dose D (mSv), source-related operations and other data.

[0052] The radiation safety risk judgment criteria are as follows:

[0053] (1) The following are the operations of Class 1 high risk that meet one of the following conditions: ① Radiation zoning: red zone; ② Expected site dose rate R (mSv / h): 10 < R ≤ 60; ③ Expected personal single-day dose D (mSv): 2 ≤ D < 4;

[0054] (2) Operations with a Level 2 high-risk are those that meet one of the following conditions: ① Radiation zoning: orange zone; ② Predicted site dose rate R (mSv / h): 1 < R ≤ 10; ③ Source-related operations: operations using mobile radiation sources of Class IV or above; ④ Predicted individual single-day dose D (mSv): 0.5 ≤ D < 2;

[0055] (3) Operations with a Level 3 medium-risk are those that meet one of the following conditions ① Predicted site dose rate R (mSv / h): 0.1 < R ≤ 1; ② Source-related operations: operations using Class V radiation sources; ③ Predicted individual single-day dose D (mSv): 0.1 ≤ D < 0.5;

[0056] (4) Operations with a Level 4 low-risk are those that meet one of the following conditions: ① Predicted site dose rate R (mSv / h): 0.001 < R ≤ 0.1; ② Source-related operations: operations using exempt sources; ③ Predicted individual single-day dose D (mSv): D < 0.1.

[0057] The supervision device is electrically connected to the server and installed at the nuclear power plant operation site that requires key supervision. It is used to collect on-site supervision information of the nuclear power plant operations that require key supervision and upload the collected on-site supervision information to the server; the on-site supervision information includes the layout information of the isolation area, the site dose rate information, the personnel safety behavior information, the personnel protection measures information, and the radiation risk work link information.

[0058] The radiation safety supervision device includes a camera module, a radiation detection module, a wireless router module, an audible and visual alarm module, a voice module, and an operating system module. It is used for functions such as collecting video and picture information, radiation level information within the monitored area, alarming for abnormal radiation levels and abnormal behaviors, two-way voice communication, confirming the progress of operations, and signing in for patrol inspections.

[0059] The supervision results and radiation protection measures are as follows: (1) If the layout and preparation of the work pollution isolation area do not meet the start-up conditions, such as insufficient preparation of protective equipment and incomplete isolation boundaries, etc., it is necessary to re-prepare the protective equipment and improve the isolation boundaries; (2) If the radiation level of the site is relatively high and there are radiation hotspots, it is necessary to shield the radiation hotspots or take measures to remove the hotspots, and re-evaluate this operation to confirm whether it meets the dose limit of this operation; (3) If there are irrelevant personnel staying near the hotspots or standby personnel staying in place at the site, it is necessary to persuade the irrelevant personnel to leave or let the standby personnel待命 in a low-dose area; (4) If the personnel protection measures are effective and the personnel behaviors are normal, it indicates that the protection measures are effective; (5) If there are work links with relatively high radiation risks, such as the opening of radioactive equipment, and it is confirmed that the air pollution sampling at the equipment opening is normal, the site dose rate level is normal, and the personnel protection measures are effective, etc., it indicates that the control measures are effective.

[0060] The radiation safety monitoring device can be expanded with multiple wireless control balls and wireless radiation probes to improve the radiation level and behavior monitoring capabilities.

[0061] The server is also used to judge the collected on-site supervision information according to the protective measures corresponding to the on-site supervision information, obtain the corresponding rectification requirements, and send the rectification requirements to the supervision device.

[0062] Reference Figure 1 Based on the above nuclear power plant operation radiation risk monitoring system, the present invention also provides a nuclear power plant operation radiation risk monitoring method, including the following steps:

[0063] Step 1: The radiation protection supervision platform server automatically loads the radiation work permit database data, filters it according to the radiation risk level and time priority, and provides a list of plans for operations that require key supervision.

[0064] Step 2: The work team begins work preparation. The radiation protection supervisor places the radiation safety supervision device at the work site, selects the work, starts the supervision process of the work, and records the supervision of the site, personnel work behavior, etc.

[0065] The layout of radiation safety monitoring devices can be expanded according to the size of the site, including wireless radiation meters, wireless electronic dosimeters, and wireless control balls, to conduct multi-faceted monitoring of the radiation isolation area or surface contamination isolation area at the work site, personnel safety behavior, wearing of protective equipment, site dose rate, and dose rate at the work location.

[0066] The radiation safety supervision device includes both remote monitoring of the radiation safety supervision device and the arrival of radiation protection supervision personnel at the site to conduct radiation safety supervision, check the layout and preparation of the contaminated isolation area of ​​the maintenance site, the dose rate of the site, whether there are radiation hotspots on the site, whether there are irrelevant personnel and standby personnel staying on the site, whether the protective measures of the personnel are in place, whether there are unsafe behaviors of the personnel, and inspection of work links with greater radiation risks, etc. The actual supervision results are recorded on the radiation safety supervision device and uploaded to the radiation protection supervision platform server.

[0067] Step 3: The radiation protection supervision platform server automatically judges the information sent back by the radiation safety supervision device based on the operation progress and corresponding radiation protection measures, and pushes the judgment results and rectification requirements to the radiation safety supervision device of the operation team. The operation team makes rectifications according to the rectification requirements and confirms the completion of the rectification on the radiation safety supervision device.

[0068] The work progress in step 3 is to set radiation protection control points for the work links with greater radiation risks in the maintenance work, and control the progress of the maintenance work according to the radiation control point list. There will be different radiation protection measures according to different work links.

[0069] The radiation protection supervision platform server automatically pushes the judgment results and rectification measures data to the radiation safety supervision device. The operation team makes rectifications according to the pushed rectification information and confirms the feedback on the radiation safety supervision device. The radiation protection supervision platform server automatically feeds back the rectification results to the background display.

[0070] Step 4: The radiation protection supervisor determines the status after rectification. If negative, step 3 is repeated until the radiation protection supervisor approves the safety measures after rectification.

[0071] Step 5: The work team determines the completion of the current radiation control point on the radiation safety monitoring device based on the work progress, and pushes the information to the radiation protection monitoring platform server.

[0072] Step 6: The radiation protection supervisor arrives on site to verify the completion status of the current radiation control point, and the radiation protection supervision platform server synchronously updates the radiation safety risk data.

[0073] Step 7: After the work is completed, the operation team will shut down the operation on the radiation safety supervision device. After the radiation protection supervisor has passed the on-site acceptance, the radiation safety supervision device will be taken back, and the radiation safety supervision work for this operation is completed.

[0074] Example

[0075] Taking a highly risky (RWP (radiation work permit) level 2) on-site operation (reactor coolant pump maintenance) as an example, a method for monitoring radiation risks in nuclear power plant operations provided by the present invention is introduced.

[0076] Step 8: The radiation safety supervision platform server automatically loads the radiation work permit database data, screens according to the radiation risk level and time priority, and gives a list of plans that need to be monitored, including the work content, unit number, risk level, planned start time, planned completion time, number of workers (man), working hours (h), personal daily dose (mSv), personal dose (mSv), collective dose (man·mSv), radiation control points, radiation risks and protection measures, team information, etc., which are transmitted to the radiation safety supervision device.

[0077] In this embodiment, the maintenance of a reactor coolant pump with high risk (RWP (radiation work permit) level 2) is taken as an example, and the operation site is a nuclear service building. This operation involves external exposure risk, surface contamination risk, and air contamination risk. The work links with greater radiation risks are: (1) Site layout and preparation of the reactor coolant pump maintenance area in the nuclear service building. (2) Before the removable parts of the reactor coolant pump are transferred to the decontamination site. (3) Before the removable parts are disassembled and inspected. (4) After the work is completed, the site is cleaned and inspected; these four work links are based on the radiation control point H. RP Take control.

[0078] The work team prepares radiation protection supplies according to the radiation risks and protection measures requirements.

[0079] Step 9: The work team starts the operation. The radiation protection supervisor arranges the radiation safety supervision device at the work site and selects the operation to determine the actual start time. At the same time, according to the radiation control point set (1) Site layout and preparation of reactor coolant pump maintenance area in nuclear service building, the work team is prompted to prepare the site layout and radiation protection supplies.

[0080] The operation team completes the site layout and prepares the protective equipment. They confirm that the radiation control point is ready on the radiation safety supervision device. The radiation safety supervision platform server is updated synchronously to remind the radiation protection personnel to verify and sign on site. According to the reminder information, the radiation protection supervisor arrives at the operation area and verifies according to the requirements of the radiation control point. After the verification is qualified, the acceptance is confirmed on the radiation safety supervision device. The radiation control point is released.

[0081] The conditions for judging the site layout and preparation of the reactor coolant pump maintenance area in the nuclear service building are as follows: (1) The person in charge of the work has organized and completed the site layout and preparation of the reactor coolant pump maintenance area. ① Lead sheets have been hung in the impeller storage area on the reactor coolant pump maintenance stand to shield and reduce the dose rate in the area. ② Relevant safety signs have been posted. ③ The detachable stainless steel protective fence has been erected. ④ Prepare the following items: paper clothes, rubber gloves, plastic shoe covers, high-top shoe covers, gas masks (2 sets of gas distributors, 6 gas supply pipes), some absorbent paper and some red, yellow and blue plastic bags, waste collection racks, contaminated thresholds, etc. (2) Special tools and racks have been stored in a classified manner, and tools used in the contaminated isolation area have been placed in the contaminated isolation area. (3) Surface contamination measurement instruments are placed in the low-dose rate area near the entrance and exit of the contaminated isolation area.

[0082] Step 10: The radiation protection supervision platform server automatically or manually judges the information sent back by the radiation safety supervision device according to the site layout and preparation judgment conditions of the reactor coolant pump maintenance area of ​​the nuclear service plant, and pushes the judgment results and rectification requirements to the radiation safety supervision device of the operating team. The operating team makes rectifications according to the rectification requirements and confirms the completion of the rectification on the radiation safety supervision device;

[0083] Step 11: The radiation protection supervisor determines the status after rectification. If negative, step 3 is repeated until the radiation protection supervisor approves the safety measures after rectification.

[0084] Step 12: The work team repeats steps 3 and 4 according to the work progress, confirms that the current radiation control point is completed on the radiation safety monitoring device, and pushes the information to the radiation protection monitoring platform server;

[0085] The following conditions must be met before the removable parts of the reactor coolant pump are transferred to the decontamination site: (1) The reactor coolant pump impeller decontamination site has been arranged and inspected to be qualified. (2) The following items are prepared as required: paper clothes, rubber gloves, plastic shoe covers, as well as a number of red, yellow and blue plastic bags, waste collection racks, contaminated thresholds, etc. (3) Workers in the isolation area have worn paper clothes, rubber gloves, and plastic shoe covers; (4) Before the removable parts of the reactor coolant pump are transferred to the decontamination site, the person in charge of the work has notified the radiation protection personnel to be on site for supervision. (5) Before the removable parts of the reactor coolant pump are transferred to the decontamination site, the person in charge of the work has notified the on-site service personnel to be in place.

[0086] The conditions for judging before disassembly inspection of the removable components of the reactor coolant pump are as follows: (1) The person in charge of the work has made clear the personnel protection requirements in the contaminated isolation area to all personnel of the work team: specific workers: rubber gloves, plastic shoe covers, waterproof paper clothes, gas masks; assisting personnel: rubber gloves, plastic shoe covers, paper clothes, splash masks;

[0087] After the work is completed, the site cleaning inspection and judgment conditions are as follows: (1) The person in charge of the work has completed the site cleaning and the waste has been removed; (2) The person in charge of the work has conducted a self-inspection of the ground for contamination and confirmed that there is no loose contamination; (3) The radiation protection personnel have verified the contamination situation and confirmed that there is no loose contamination.

[0088] The supervision results and radiation protection measures of this embodiment are as follows: (1) If the site layout and preparation do not meet the conditions for starting work, such as insufficient preparation of protective equipment and incomplete isolation boundaries, it is necessary to re-prepare protective equipment and improve isolation boundaries. (2) If the radiation level of the site is high and there are radiation hotspots, the radiation hotspots need to be shielded, and the operation needs to be re-evaluated to confirm whether the dose limit of the operation is met. (3) If there are irrelevant personnel staying at the site or standby personnel are on standby, the irrelevant personnel need to be persuaded to leave or the standby personnel need to stand by in a low-dose area. (4) If the personnel protection measures are effective and the personnel behavior is normal, it means that the protection measures are effective. (5) If there are work links with greater radiation risks, such as the opening of radioactive equipment, air pollution sampling at the equipment opening is carried out to confirm that it is normal, the site dose rate level is normal, and the personnel protection measures are effective, etc., it means that the control measures are effective.

[0089] Step 13: The radiation protection supervisor arrives on site to verify the completion status of the current radiation control point, and the radiation protection supervision platform server synchronously updates the radiation safety risk data.

[0090] Step 14: After the work team finishes the work, they will shut down the work on the radiation safety supervision device. After the radiation protection supervisor has passed the on-site acceptance, the radiation safety supervision device will be taken back, and the radiation safety supervision work for this operation will be completed.

[0091] In addition to grading the radiation risks of operations, the present invention can also be used to monitor high-dose rate areas and channels that require special attention. For example, the places involved in the VVER pressurized water reactor unit are: UKA08251 (nuclear auxiliary plant room), UJA07250 (nuclear reactor plant room), UJA16 main pipeline area, UJA16411 / 412 (nuclear reactor plant room), UJA19 meters, UJA34 meters reactor special operation sites and other high radiation level areas; the places involved in the M310 pressurized water reactor unit are nuclear reactor plant RX-3.4 meters R145 / R185, R146 / R186 rooms, RX5 meters inner ring corridor, RX8 meters inner ring, R448 / R488 rooms, RX11.5 meters / R512 / 522 / 532 / 552 / 562 / 572 rooms and other high radiation level areas, realizing full-process dynamic area management.

[0092] The present invention is applicable to on-site radiation maintenance work of various types of nuclear power plants, strengthens the ability to pre-perceive radiation risks in nuclear power plants, improves the level of radiation safety management in nuclear power plants, and reduces the collective dose of power plants and the exposure dose of personnel. Compared with the prior art, the present invention has the following advantages:

[0093] (1) It can cover the radiation risk control of all radiation work in the power plant, realize the functions of intelligent reminder and real-time update, and improve the radiation safety management level of the power plant.

[0094] (2) Establish a set of universal radiation safety risk level data and rules, and implement different safety management and supervision requirements according to different levels and rules.

[0095] (3) Reduce the risk of human error among radiation protection personnel and help improve their radiation safety supervision capabilities and levels.

[0096] (4) It realizes the effective connection between the power plant production planning platform and radiation work information, ensures that the radiation risk analysis of radiation work can be carried out in advance and work preparation can be carried out, and realizes the automatic identification of radiation risks, the selection of radiation protection optimization measures, and the radiation risk process control of maintenance operations.

[0097] (5) An intelligent radiation risk monitoring platform was established to effectively accumulate basic radiation risk information for radiation maintenance work, provide a reference for subsequent similar work, and facilitate the optimization of work preparation, personnel protection, and collective dose control of work.

[0098] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0099] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A nuclear power plant operation radiation risk monitoring system, characterized in that: Including: An operation database for storing nuclear power plant operation data with effective work permits; A server electrically connected to the operation database, used to automatically load nuclear power plant operation data with effective work permits, and screen according to the radiation risk level and time priority to obtain nuclear power plant operations that need to be key supervised; the nuclear power plant operation data includes work content, unit number, risk level, planned start time, planned completion time, number of workers, working hours, individual daily dose, individual dose, collective dose, radiation control points, radiation risk, protection measures, and team information; A supervision device electrically connected to the server, installed at the nuclear power plant operation site that needs to be key supervised, used to collect on-site supervision information of the nuclear power plant operation that needs to be key supervised, and upload the collected on-site supervision information to the server; the on-site supervision information includes isolation area layout information, site dose rate information, personnel safety behavior information, personnel protection measure information, and radiation risk work link information; The server is also used to judge the collected on-site supervision information according to the protection measures corresponding to the on-site supervision information, obtain corresponding rectification requirements, and send the rectification requirements to the supervision device.

2. A monitoring method for a nuclear power plant operation radiation risk monitoring system as claimed in claim 1, characterized in that: The radiation risk level is divided by radiation zone, expected site dose rate R, expected individual daily dose D, and source-related operations, including Level 1 high risk, Level 2 high risk, Level 3 medium risk, and Level 4 low risk; among them, For Level 1 high risk, the radiation zone is the red zone, the expected site dose rate is 10 < R ≤ 60, and the expected individual daily dose is 2 ≤ D < 4; For Level 2 high risk, the radiation zone is the orange zone, the expected site dose rate is 1 < R ≤ 10, the source-related operation is an operation using a mobile radiation source of Class IV or above, and the expected individual daily dose is 0.5 ≤ D < 2; For Level 3 medium risk, the radiation zone is the red zone, the expected site dose rate is 0.1 < R ≤ 1, the source-related operation is an operation using a Class V mobile radiation source, and the expected individual daily dose is 0.1 ≤ D < 0.5; For Level 4 low risk, the radiation zone is the red zone, the expected site dose rate is 0.001 < R ≤ 0.1, the source-related operation is an operation using an exempt source, and the expected individual daily dose is D < 0.

1.

3. A nuclear power plant operation radiation risk monitoring system as claimed in claim 1, characterized in that: The supervision device includes: A camera module for collecting video and picture information of the nuclear power plant operation site; A radiation detection module for collecting radiation level information of the nuclear power plant operation site; A wireless router module for providing wireless network signals to the nuclear power plant operation site; An audible and visual alarm module for alarming abnormal radiation levels and abnormal behaviors; A voice module for two-way communication regarding radiation safety reminders or radiation protection technical support during remote radiation safety supervision; An operating system module for updating and iterating the built-in information of the supervision device.

4. A nuclear power plant operation radiation risk monitoring system as claimed in claim 1, characterized in that: The server is also used to judge the collected on-site supervision information according to the protection measures corresponding to the on-site supervision information, obtain corresponding rectification requirements, including: When the layout of the isolation area does not meet the start-up conditions, it needs to be rearranged; When the site dose rate is greater than the set value, it is necessary to shield or remove the radiation hot spots on the site; When there are irrelevant people staying near the hot spot or the standby personnel are on standby at the site, the irrelevant people need to be persuaded to leave or the standby personnel need to stand by in the low-dose area; When there is a radiation risk in the work process, air pollution sampling is required to ensure normal operation.

5. A nuclear power plant operation radiation risk monitoring system as claimed in claim 1, characterized in that: Also includes: Staff database, used to provide staff information; The AI ​​video behavior analysis module is electrically connected to the monitoring device and includes: Object recognition system, used to identify items at the nuclear power plant operation site; Behavior recognition system, used to identify whether the operation behavior of radiation maintenance workers at the nuclear power plant operation site complies with the regulations; Face recognition systems, used to capture faces and analyze their identities; When the behavior recognition system identifies that someone in the scene has triggered an abnormal behavior alarm, when the object recognition system identifies that someone in the scene has triggered an abnormal alarm, it immediately captures the person's face and analyzes their identity.

6. A method for monitoring radiation risk in nuclear power plant operations, characterized in that: The following steps are involved: Automatically load the operation data of nuclear power plants with effective work permits, and screen them according to the radiation risk level and time priority to obtain the nuclear power plant operations that need to be focused on; the nuclear power plant operation data includes work content, unit number, risk level, planned start time, planned completion time, number of workers, working hours, personal daily dose, personal dose, collective dose, radiation control point, radiation risk, protective measures and team information; Collecting on-site supervision information of nuclear power plant operations that require key supervision, and uploading the collected on-site supervision information to the server; the on-site supervision information includes isolation area layout information, site dose rate information, personnel safety behavior information, personnel protection measures information, and radiation risk work link information; The collected on-site supervision information is judged according to the protective measures corresponding to the on-site supervision information to obtain corresponding rectification requirements.

7. A monitoring method for a nuclear power plant operation radiation risk monitoring system as claimed in claim 6, characterized in that: Also includes: The nuclear power plant operation site shall carry out rectification according to the rectification requirements and confirm that the rectification is completed; Make judgments on the nuclear power plant operation site after rectification; Determine whether the current radiation control point is completed according to the work progress, and if completed, supervise the next radiation control point; the nuclear power plant operation includes multiple radiation control points.

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