CN111595788A - Risk monitoring system for buried pipe of nuclear power plant - Google Patents
Risk monitoring system for buried pipe of nuclear power plant Download PDFInfo
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Abstract
The invention belongs to the technical field of nuclear power maintenance, and particularly relates to a risk monitoring system for a buried pipe of a nuclear power plant. The embodiment of the disclosure determines the failure possibility of the pipeline from a plurality of dimensions such as the material of the buried pipeline, the water quality of liquid in the pipeline, the soil quality of soil around the pipeline, the cathode protection state of the pipeline and the like, fully considers the influence factors of the failure of the buried pipeline, and enables the determined failure possibility of the region to be detected to be capable of more effectively reflecting the actual state of the buried pipeline.
Description
Technical Field
The invention belongs to the technical field of nuclear power maintenance, and particularly relates to a risk monitoring system for a buried pipe of a nuclear power plant.
Background
Buried pipes are an important component of nuclear power plant process systems, which assume an important medium transport function. The buried pipes of the nuclear power plant are widely distributed and exist in different systems, the functions of the systems are different, the different pipe sections are located in different internal and external environments, and the possibility of degradation failure and the consequences caused by failure of the different buried pipe sections are greatly different due to the factors. The problem of aging and degradation of the buried pipe is one of important challenges facing a nuclear power plant, common buried pipe management strategies are passive, the position where leakage occurs is excavated usually after the leakage of the buried pipe occurs, or detection and maintenance work is selectively developed by experience, the work lacks systematicness and pertinence, and the efficiency of buried pipe management activities is not high. Therefore, how to effectively manage the risk of buried pipes becomes an urgent problem to be solved.
Disclosure of Invention
In order to overcome the problems in the related art, a nuclear power plant buried pipe risk monitoring system is provided.
According to an aspect of the disclosed embodiment, a nuclear power plant buried pipe risk monitoring system is provided, the nuclear power plant buried pipe risk monitoring system includes: the system comprises a control device, component detection equipment, a water quality detection subsystem, a soil detection subsystem and a plurality of potential acquisition subsystems;
the component detection equipment is connected with the control device and is used for detecting the material components of the buried pipeline;
the water quality detection subsystem is connected with the control device and is used for detecting the water quality of the liquid in the buried pipeline;
the buried pipeline comprises a plurality of areas to be detected, and the soil detection subsystem is connected with the control device and is used for detecting the soil quality of the soil around each area to be detected;
a potential acquisition subsystem is arranged around each region to be detected, each potential acquisition subsystem is connected with the control device, and each potential acquisition subsystem is used for detecting the cathode protection potential of the corresponding region to be detected;
the control device can acquire material composition data of the buried pipeline from the composition detection equipment, acquire water quality data of liquid in the buried pipeline from the water quality detection subsystem, acquire soil quality data of soil around each region to be detected from the soil detection subsystem, and acquire cathode protection potential data corresponding to the region to be detected from each potential acquisition subsystem;
and aiming at each area to be detected, the control device determines the failure possibility of the area to be detected according to the acquired material composition data of the buried pipeline, the soil quality data of the soil around the area to be detected, the water quality data of the liquid in the buried pipeline and the cathode protection potential data of the area to be detected.
In one possible implementation, the component detection device is a spectrum analyzer.
In one possible implementation, the water quality detection subsystem includes: a first pH meter;
the first pH meter is connected with the control device and used for detecting a first pH value of the liquid in the buried pipeline;
the control means is capable of obtaining first pH data for the liquid within the buried pipeline from the first pH meter.
In one possible implementation, the water quality detection subsystem further includes: a first ion chromatograph;
the first ion chromatograph is connected with the control device and used for detecting components of liquid in the buried pipeline;
the control means is capable of obtaining composition data of the liquid within the buried pipeline from the first ion chromatograph.
In one possible implementation, the soil detection subsystem includes: an oxidation-reduction potential tester;
the oxidation-reduction potential tester is connected with the control device and is used for detecting the oxidation-reduction potential of the soil around each region to be detected;
the control device can acquire oxidation-reduction potential data of soil around each region to be tested from the oxidation-reduction potential tester.
In one possible implementation, the soil detection subsystem further includes: a corrosion tester;
the corrosion tester is connected with the control device and is used for detecting the corrosion rate of the soil around each region to be detected to the metal;
the control device can acquire the data of the metal corrosion rate of the soil around each region to be tested from the corrosion tester.
In one possible implementation, the soil detection subsystem further includes: a second ion chromatograph;
the second ion chromatograph is connected with the control device and is used for detecting the components of the soil around each area to be detected;
the control device is capable of acquiring composition data of soil around each area to be measured from the second ion chromatograph.
In one possible implementation, the soil detection subsystem further includes: a plurality of ground resistance meters;
one or more grounding resistance meters are arranged around each area to be detected, and the one or more grounding resistance meters are connected with the control device and used for detecting the resistivity of the soil around the area to be detected;
the control device can acquire resistivity data of soil around each region to be measured from a plurality of grounding resistance meters.
In one possible implementation, the soil detection subsystem further includes: a plurality of second pH meters;
one or more second pH meters are arranged around each area to be detected, and the one or more second pH meters are connected with the control device and used for detecting a second pH value of soil around the area to be detected;
the control device can acquire second pH data of the soil around each region to be measured from the plurality of second pH meters.
In one possible implementation, the pipe section between the valves exposed out of the ground on the buried pipeline is an area to be measured.
In one possible implementation, for each area to be measured, the control device performs the following operations:
determining a first score corresponding to the material component of the obtained buried pipeline according to a preset corresponding relation between the material component of the buried pipeline and the score;
determining a second value corresponding to the obtained water quality data of the liquid in the buried pipeline according to the preset corresponding relation between the water quality data of the liquid in the buried pipeline and the value;
judging whether the soil property data of the soil around the area to be detected is matched with a plurality of preset first conditions or not, and determining a third score corresponding to the first condition matched with the soil property data of the soil around the area to be detected;
judging whether the cathodic protection potential data of the area to be detected is matched with a plurality of preset second conditions or not, and determining a fourth score corresponding to the second conditions matched with the cathodic protection potential data of the area to be detected;
and determining the failure possibility of the area to be detected according to the first score, the second score, the third score and the fourth score.
In a possible implementation manner, the control device prestores the detection completion degree of the buried pipeline, the quality defect number of the buried pipeline and the service life of the buried pipeline, wherein the detection completion degree is used for indicating the proportion of a detection plan of the buried pipeline, which is completed in the last detection, to a total detection plan;
aiming at each area to be detected, the control device determines the failure possibility of the area to be detected according to the acquired material composition data of the buried pipeline, the soil quality data of the soil around the area to be detected and the water quality data of the liquid in the buried pipeline, the cathode protection potential data of the area to be detected, the detection completion degree of the buried pipeline, the quality defect quantity of the buried pipeline and the service duration of the buried pipeline.
In one possible implementation form of the method,
the control device determines a fifth value corresponding to the type of the buried pipeline according to the security level of the buried pipeline and the corresponding relation between the security level of each pipeline and the value;
the control device determines the environmental pollution level of the liquid in the buried pipeline according to the liquid component data in the buried pipeline, and determines a sixth score corresponding to the environmental pollution level of the liquid in the buried pipeline according to the corresponding relation between the environmental pollution level and the score;
the control device determines a seventh score corresponding to the buried pipeline failure influence type according to the failure influence type of the buried pipeline and the corresponding relation between the failure influence type and the score;
the control device determines the grade of the buried pipeline failure consequence according to the fifth value, the sixth value and the seventh value;
and the control device determines the risk level of each area to be tested according to the failure possibility of each area to be tested and the failure consequence level of the buried pipeline.
The invention has the beneficial effects that: the embodiment of the disclosure determines the failure possibility of the pipeline from a plurality of dimensions such as the material of the buried pipeline, the water quality of liquid in the pipeline, the soil quality of soil around the pipeline, the cathode protection state of the pipeline and the like, fully considers the influence factors of the failure of the buried pipeline, and enables the determined failure possibility of the region to be detected to be capable of more effectively reflecting the actual state of the buried pipeline.
Drawings
FIG. 1 is a block diagram illustrating a nuclear power plant buried pipe risk monitoring system according to an exemplary embodiment.
FIG. 2 is a schematic diagram illustrating risk classification imaging in a nuclear power plant buried pipe risk monitoring system according to an exemplary embodiment.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
FIG. 1 is a block diagram illustrating a nuclear power plant buried pipe risk monitoring system according to an exemplary embodiment. As shown in fig. 1, the risk monitoring system for buried pipes in nuclear power plant includes: the system comprises a control device, component detection equipment, a water quality detection subsystem, a soil detection subsystem and a plurality of potential acquisition subsystems;
as an example of this embodiment, the composition detection device may be, for example, a spectrum analyzer, and the composition detection device may detect a portion of the buried pipeline exposed to the outside (for example, the buried pipeline in a valve well), and may determine a composition of a material of the buried pipeline (for example, a material of a pipe body, an outer wall anticorrosive coating, and an inner wall anticorrosive coating of the buried pipeline may be detected using the spectrum analyzer, and material compositions of the pipe body, the outer wall anticorrosive coating, and the inner wall anticorrosive coating of the buried pipeline may be determined), and the control apparatus may be connected to the composition detection device and acquire material composition data of the buried pipeline.
The water quality detection subsystem is connected with the control device and is used for detecting the water quality of liquid in the buried pipeline. The control device may obtain water quality data of the liquid in the buried pipeline from a water quality detection subsystem.
For example, the water quality detection subsystem may include: a first pH meter and a first ion chromatograph. Generally speaking, a buried pipeline may have a liquid sampling port, and a liquid sample may be collected at the liquid sampling port and detected using a first pH meter and a first ion chromatograph, respectively, to obtain first pH data and liquid composition data of a liquid in the buried pipeline. The water quality data acquired by the control means from the water quality detection subsystem may include the control means acquiring first pH data of the liquid within the buried pipeline from the first pH meter and the control means acquiring composition data of the liquid within the buried pipeline (e.g. chloride ions, sulphate ions, sulphur ions, etc. in the liquid) from the first ion chromatograph.
The buried pipeline can be divided into a plurality of regions to be detected (for example, a pipeline section between valves exposed out of the ground on the pipeline can be divided into one region to be detected, the buried pipeline can also be divided into a plurality of equal-length pipeline sections, and each pipeline section is one region to be detected), and the soil detection subsystem is connected with the control device and is used for detecting the soil quality of soil around each region to be detected. The control device can acquire soil property data of soil around each area to be detected from the soil detection subsystem.
For example, the soil detection subsystem may include: the device comprises an oxidation-reduction potential tester, a corrosion tester, a second ion chromatograph, a plurality of grounding resistance meters and a plurality of second pH meters;
for example, soil samples can be taken around each area to be tested, and the soil samples around each area to be tested can be tested by using an oxidation-reduction potential tester to obtain oxidation-reduction potential data of the soil around each area to be tested.
A corrosion tester can be used for detecting soil samples around each region to be detected, and the rate data of metal corrosion of soil around each region to be detected is obtained.
The second ion chromatograph may also be used to detect soil samples around each area to be detected, and obtain data of the composition of the soil around each area to be detected (e.g., chloride ions, sulfate ions, and sulfide ions in the soil).
One or more grounding resistance meters are arranged around each region to be detected, and the one or more grounding resistance meters can detect the resistivity data of the soil around the region to be detected, for example, a plurality of grounding resistance meters can be arranged in each region to be detected, and the resistivity data mean value collected by the plurality of grounding resistance meters can be used as the resistivity data of the soil around the region to be detected.
One or more second pH meters may be further disposed around each region to be measured, and the one or more second pH meters may detect the pH value of the soil around the region to be measured, for example, a plurality of second pH meters may be disposed in each region to be measured, and the average value of the pH values collected by the plurality of second pH meters may be used as the second pH value of the soil around the region to be measured.
The soil property data acquired by the control device from the soil detection subsystem may include: the data of the oxidation-reduction potential of the soil around each region to be measured, the data of the metal corrosion rate of the soil around each region to be measured, the composition data of the soil around each region to be measured, the resistivity data of the soil around each region to be measured, and the second pH value data of the soil around each region to be measured.
A potential acquisition subsystem may be provided around each region to be measured, and the potential acquisition subsystem may include, for example, a potential acquisition recorder and a reference electrode. Each potential acquisition subsystem can be connected with the control device and can be used for detecting the cathodic protection potential of the corresponding region to be detected;
and aiming at each area to be detected, the control device determines the failure possibility of the area to be detected according to the acquired material composition data of the buried pipeline, the soil quality data of the soil around the area to be detected, the water quality data of the liquid in the buried pipeline and the cathode protection potential data of the area to be detected.
For example, the control device may prestore a corresponding relationship between the plurality of groups of material components and the scores, and determine a first score corresponding to the material of the buried pipeline (for example, if the detected pipe body material of the buried pipeline is carbon steel, the outer wall anticorrosive layer material is asphalt glass cloth, the inner wall anticorrosive layer material is epoxy resin, and the carbon steel corresponds to 10 scores, the asphalt glass cloth corresponds to 4 scores, and the epoxy resin anticorrosive layer corresponds to 4 scores, the first score corresponding to the buried pipeline material may be 18 scores).
The control device can determine a second value corresponding to the acquired water quality data of the liquid in the buried pipeline according to the preset corresponding relation between the water quality data of the liquid in the buried pipeline and the value.
For example, the control device may preset a correspondence between a plurality of groups of first pH intervals and the scores, and the control device may determine a first pH interval to which the acquired first pH belongs, and determine the score corresponding to the first pH interval as the second score;
for another example, the control device may preset a correspondence between the plurality of groups of liquid components and the score, and determine the score corresponding to the liquid component in the buried pipeline as the second score.
In a possible implementation, the control device may also use as the second score the mean or weighted sum of the score corresponding to the first pH value and the score corresponding to the liquid component.
The control device can also judge whether the soil property data of the soil around the area to be detected is matched with a plurality of preset first conditions or not, and determine a third score corresponding to the first condition matched with the soil property data of the soil around the area to be detected;
for example, the control device may preset a corresponding relationship between a plurality of sets of oxidation-reduction potential value intervals and the score, and the control device may determine an oxidation-reduction potential value interval to which the obtained oxidation-reduction potential value of the soil around the region to be measured belongs, and determine that the score corresponding to the oxidation-reduction potential value interval is a third score.
For example, the control device may preset a corresponding relationship between a plurality of groups of corrosion rate intervals and the scores, and the control device may determine the corrosion rate interval to which the obtained rate value of the soil around each region to be detected corrodes the metal belongs, and determine the score corresponding to the corrosion rate interval as the third score.
For example, the control device may preset a correspondence relationship between the plurality of groups of soil components and the score, and determine the score corresponding to the components of the soil around the region to be measured as a third score.
For example, the control device may preset a corresponding relationship between a plurality of groups of resistivity value intervals and the scores, and the control device may determine the resistivity value interval to which the resistivity values of the soil around the area to be measured belong, and determine the score corresponding to the resistivity value interval as the third score.
For example, the control device may preset a correspondence between a plurality of groups of second pH value intervals and the score, and the control device may determine a second pH value interval to which the second pH value of the soil around the region to be detected belongs, and determine that the score corresponding to the second pH value interval is a third score.
In a possible implementation manner, the control device may further apply a score corresponding to an oxidation-reduction potential value of soil around the area to be measured and a score corresponding to a rate value of metal corrosion of the soil around the area to be measured. And taking an average value or a weighted sum of the scores corresponding to the components of the soil around the area to be detected, the scores corresponding to the resistivity values of the soil around the area to be detected and the scores corresponding to the second pH values of the soil around the area to be detected as a third score.
The control device can also judge whether the cathodic protection potential data of the area to be detected is matched with a plurality of preset second conditions or not, and determine a fourth score corresponding to the second condition matched with the cathodic protection potential data of the area to be detected;
for example, the control device may preset a correspondence relationship between a plurality of sets of cathodic protection potential value intervals and the score, and the control device may determine a cathodic protection potential value interval to which the cathodic protection potential value acquired to the region to be measured belongs, and determine that the score corresponding to the cathodic protection potential value interval is the fourth score.
The control means may set a weighted sum of the first score, the second score, the third score, and the fourth score as the probability of failure of the region to be measured (wherein the weighted sum between the scores may be set empirically).
In a possible implementation mode, the control device can prestore the detection completion degree of the buried pipeline, and the detection completion degree is used for representing the proportion of a detection plan of the buried pipeline, which is completed in the last detection, in the total detection plan; the control device may preset a correspondence relationship between a plurality of groups of detection completion intervals and the score, and the control device may determine the detection completion interval to which the last detection completion belongs, and determine that the score corresponding to the detection completion interval is the tenth score. The control device can also prestore the quality defect quantity and the service duration of the buried pipeline, and determine the eleventh score corresponding to the quality defect quantity of the buried pipeline and the twelfth score corresponding to the service duration of the buried pipeline. The control means may set a weighted sum of the first score, the second score, the third score, the fourth score, the tenth score, the eleventh score, and the twelfth score as the probability of failure of the region to be measured. Therefore, on the basis of factors such as the material of the buried pipeline, the surrounding soil quality, the quality of liquid in the pipeline and the like, the failure possibility of the buried pipeline is determined jointly through factors such as the detection completion degree, the service duration, the quality defect quantity and the like of the area to be detected, and the accuracy of the failure evaluation of the buried pipeline can be further improved.
And aiming at each area to be detected, the control device determines the failure possibility of the area to be detected according to the acquired material composition data of the buried pipeline, the soil quality data of the soil around the area to be detected, the water quality data of the liquid in the buried pipeline, the cathode protection potential data of the area to be detected and the detection completion degree of the buried pipeline.
The embodiment of the disclosure can determine the failure probability of the pipeline from multiple dimensions such as the material composition of the buried pipeline, the water quality of liquid in the pipeline (for example, the composition of the liquid, the pH value of the liquid and the like), the soil quality of soil around the pipeline (for example, the composition of the soil, the oxidation-reduction potential of the soil, the corrosion rate of the soil to metal, the resistivity of the soil, the pH value of the soil and the like), the cathode protection state of the pipeline and the like, and fully considers the influence factors of the failure of the buried pipeline, so that the determined failure probability of the area to be detected can more effectively reflect the actual state of the buried pipeline.
In one possible implementation mode, the control device determines a fifth value corresponding to the type of the buried pipeline according to the safety level of the buried pipeline and the corresponding relation between the safety level of each pipeline and the value (for example, the pipeline is 10 points corresponding to more than 2 levels of nuclear safety, 8 points corresponding to 3 levels of nuclear safety, 6 points corresponding to non-nuclear safety but connected with a nuclear safety level system pipeline, 5 points corresponding to a fire-fighting pipeline, and the other 4 points corresponding to 4 points);
the control device determines the environmental pollution level of the liquid in the buried pipeline according to the liquid component data in the buried pipeline, and determines a sixth score corresponding to the environmental pollution level of the liquid in the buried pipeline according to the corresponding relation between the environmental pollution level and the score; (e.g., 10 points for components with radioactive environmental contamination; 8 points for oil contamination or other toxic substance contamination; 6 points for non-environmental contaminant contamination; 4 points for general environmental influences, such as influences on normal work or the environment of the same trip).
The control device determines a seventh value corresponding to the failure influence type of the buried pipeline according to the failure influence type of the buried pipeline and the corresponding relation between the multiple groups of failure influence types and the values, for example, the value corresponds to 10 points when the buried pipeline fails and leads to unplanned shutdown and shutdown of a unit; the buried pipeline failure has certain influence on the operation of the unit, but does not cause shutdown and shutdown, and may cause large-scale engineering reconstruction (the reconstruction expense scale is more than 500 ten thousand), corresponding to 8 minutes; the buried pipeline failure needs to be treated in 1 fuel circulation period, but the treatment can be finished through ordinary daily maintenance; correspondingly 6 points; the buried pipeline is not urgent but needs to be disposed of when failing, and can be carried out by selecting a proper time according to the opportunity, which corresponds to 4 minutes.
The control means may determine a weighted sum of the fifth, sixth and seventh scores and determine the rating corresponding to the weighted sum of the threshold interval and the rating (e.g. high, medium or low) as the level of the consequences of failure of the buried pipeline based on the correspondence between the threshold interval and the rating. According to the embodiment of the invention, in the evaluation of the to-be-detected region of the buried pipeline, the judgment on the influence of failure is added on the basis of failure factors, so that the potential risk of the to-be-detected region can be reflected more accurately.
And the control device determines the risk level of each region to be tested according to the failure possibility of each region to be tested and the failure consequence level of the buried pipeline.
For example, the control device may prestore a plurality of sets of correspondence between the failure possibility, the failure consequence level, and the risk level, and determine the failure possibility of each region to be measured and the risk level of the region to be measured corresponding to the failure consequence level of the buried pipeline.
FIG. 2 is a schematic diagram illustrating risk classification imaging in a nuclear power plant buried pipe risk monitoring system according to an exemplary embodiment. As shown in fig. 2, in a possible implementation, the control device may further include a display device, and the display device may graphically display the risk level of each region to be measured. The buried pipe risk rating can be presented visually.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (13)
1. The utility model provides a risk monitoring system for buried pipe of nuclear power plant which characterized in that, the risk monitoring system for buried pipe of nuclear power plant includes: the system comprises a control device, component detection equipment, a water quality detection subsystem, a soil detection subsystem and a plurality of potential acquisition subsystems;
the component detection equipment is connected with the control device and is used for detecting the material components of the buried pipeline;
the water quality detection subsystem is connected with the control device and is used for detecting the water quality of the liquid in the buried pipeline;
the buried pipeline comprises a plurality of areas to be detected, and the soil detection subsystem is connected with the control device and is used for detecting the soil quality of the soil around each area to be detected;
a potential acquisition subsystem is arranged around each region to be detected, each potential acquisition subsystem is connected with the control device, and each potential acquisition subsystem is used for detecting the cathode protection potential of the corresponding region to be detected;
the control device can acquire material composition data of the buried pipeline from the composition detection equipment, acquire water quality data of liquid in the buried pipeline from the water quality detection subsystem, acquire soil quality data of soil around each region to be detected from the soil detection subsystem, and acquire cathode protection potential data corresponding to the region to be detected from each potential acquisition subsystem;
and aiming at each area to be detected, the control device determines the failure possibility of the area to be detected according to the acquired material composition data of the buried pipeline, the soil quality data of the soil around the area to be detected, the water quality data of the liquid in the buried pipeline and the cathode protection potential data of the area to be detected.
2. The nuclear power plant buried pipe risk monitoring system of claim 1, wherein the composition detection device is a spectrum analyzer.
3. The nuclear power plant buried pipe risk monitoring system of claim 1, wherein the water quality detection subsystem includes: a first pH meter;
the first pH meter is connected with the control device and used for detecting a first pH value of the liquid in the buried pipeline;
the control means is capable of obtaining first pH data for the liquid within the buried pipeline from the first pH meter.
4. The nuclear power plant buried pipe risk monitoring system of claim 1, wherein the water quality detection subsystem further comprises: a first ion chromatograph;
the first ion chromatograph is connected with the control device and used for detecting components of liquid in the buried pipeline;
the control means is capable of obtaining composition data of the liquid within the buried pipeline from the first ion chromatograph.
5. A nuclear power plant buried pipe risk monitoring system as claimed in claim 1, wherein the soil detection subsystem includes: an oxidation-reduction potential tester;
the oxidation-reduction potential tester is connected with the control device and is used for detecting the oxidation-reduction potential of the soil around each region to be detected;
the control device can acquire oxidation-reduction potential data of soil around each region to be tested from the oxidation-reduction potential tester.
6. The nuclear power plant buried pipe risk monitoring system of claim 1, wherein the soil detection subsystem further comprises: a corrosion tester;
the corrosion tester is connected with the control device and is used for detecting the corrosion rate of the soil around each region to be detected to the metal;
the control device can acquire the data of the metal corrosion rate of the soil around each region to be tested from the corrosion tester.
7. The nuclear power plant buried pipe risk monitoring system of claim 1, wherein the soil detection subsystem further comprises: a second ion chromatograph;
the second ion chromatograph is connected with the control device and is used for detecting the components of the soil around each area to be detected;
the control device is capable of acquiring composition data of soil around each area to be measured from the second ion chromatograph.
8. The nuclear power plant buried pipe risk monitoring system of claim 1, wherein the soil detection subsystem further comprises: a plurality of ground resistance meters;
one or more grounding resistance meters are arranged around each area to be detected, and the one or more grounding resistance meters are connected with the control device and used for detecting the resistivity of the soil around the area to be detected;
the control device can acquire resistivity data of soil around each region to be measured from a plurality of grounding resistance meters.
9. The nuclear power plant buried pipe risk monitoring system of claim 1, wherein the soil detection subsystem further comprises: a plurality of second pH meters;
one or more second pH meters are arranged around each area to be detected, and the one or more second pH meters are connected with the control device and used for detecting a second pH value of soil around the area to be detected;
the control device can acquire second pH data of the soil around each region to be measured from the plurality of second pH meters.
10. A nuclear power plant buried pipe risk monitoring system as claimed in claim 1, wherein the section of pipe between the valves exposed to the ground on the buried pipeline is an area to be measured.
11. The nuclear power plant buried pipe risk monitoring system of claim 1, wherein for each area to be tested, the control device:
determining a first score corresponding to the material component of the obtained buried pipeline according to a preset corresponding relation between the material component of the buried pipeline and the score;
determining a second value corresponding to the obtained water quality data of the liquid in the buried pipeline according to the preset corresponding relation between the water quality data of the liquid in the buried pipeline and the value;
judging whether the soil property data of the soil around the area to be detected is matched with a plurality of preset first conditions or not, and determining a third score corresponding to the first condition matched with the soil property data of the soil around the area to be detected;
judging whether the cathodic protection potential data of the area to be detected is matched with a plurality of preset second conditions or not, and determining a fourth score corresponding to the second conditions matched with the cathodic protection potential data of the area to be detected;
and determining the failure possibility of the area to be detected according to the first score, the second score, the third score and the fourth score.
12. The nuclear power plant buried pipe risk monitoring system according to claim 1, wherein the control device prestores detection completion degree of the buried pipeline, quality defect number of the buried pipeline and service life of the buried pipeline, wherein the detection completion degree is used for indicating a proportion of a detection plan of the buried pipeline, which is completed in the last detection, to a total detection plan;
aiming at each area to be detected, the control device determines the failure possibility of the area to be detected according to the acquired material composition data of the buried pipeline, the soil quality data of the soil around the area to be detected and the water quality data of the liquid in the buried pipeline, the cathode protection potential data of the area to be detected, the detection completion degree of the buried pipeline, the quality defect quantity of the buried pipeline and the service duration of the buried pipeline.
13. The risk monitoring system for buried pipes in nuclear power plants according to claim 1 or 11,
the control device determines a fifth value corresponding to the type of the buried pipeline according to the security level of the buried pipeline and the corresponding relation between the security level of each pipeline and the value;
the control device determines the environmental pollution level of the liquid in the buried pipeline according to the liquid component data in the buried pipeline, and determines a sixth score corresponding to the environmental pollution level of the liquid in the buried pipeline according to the corresponding relation between the environmental pollution level and the score;
the control device determines a seventh score corresponding to the buried pipeline failure influence type according to the failure influence type of the buried pipeline and the corresponding relation between the failure influence type and the score;
the control device determines the grade of the buried pipeline failure consequence according to the fifth value, the sixth value and the seventh value;
and the control device determines the risk level of each area to be tested according to the failure possibility of each area to be tested and the failure consequence level of the buried pipeline.
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| CN202010395021.3A CN111595788A (en) | 2020-05-12 | 2020-05-12 | Risk monitoring system for buried pipe of nuclear power plant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113359200A (en) * | 2021-06-25 | 2021-09-07 | 中国矿业大学 | Nuclear waste landfill water body monitoring system and method based on nuclear magnetic sensor |
| CN117821984A (en) * | 2024-03-04 | 2024-04-05 | 成都秦川物联网科技股份有限公司 | Intelligent gas pipeline cathode protection intelligent detection method and Internet of things system |
-
2020
- 2020-05-12 CN CN202010395021.3A patent/CN111595788A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113359200A (en) * | 2021-06-25 | 2021-09-07 | 中国矿业大学 | Nuclear waste landfill water body monitoring system and method based on nuclear magnetic sensor |
| CN117821984A (en) * | 2024-03-04 | 2024-04-05 | 成都秦川物联网科技股份有限公司 | Intelligent gas pipeline cathode protection intelligent detection method and Internet of things system |
| CN117821984B (en) * | 2024-03-04 | 2024-05-24 | 成都秦川物联网科技股份有限公司 | Intelligent gas pipeline cathode protection intelligent detection method and Internet of things system |
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