Microbial contamination control method, device, computer equipment and storage medium

Abstract

The present application relates to a method, device, computer equipment, and storage medium for controlling microbial contamination. The method comprises: obtaining a first actual microbial contamination value at a filter in the No. 3 shaft seal water injection system of a nuclear main pump; determining the degree of microbial contamination of the No. 3 shaft seal water injection system of the nuclear main pump based on the first actual microbial contamination value and the first standard microbial contamination value at the filter; determining the replacement conditions for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump based on the degree of microbial contamination, and replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump based on the replacement conditions, so as to achieve microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump. The use of this method can ensure the long-term and reliable operation of the No. 3 shaft seal of the nuclear main pump, thereby ensuring the safety of nuclear reactor operation.

Description

Technical Field

[0001] The present application relates to the technical field of nuclear power plants, and in particular to a method, apparatus, computer equipment, and storage medium for controlling microbial contamination. Background Art

[0002] The No. 3 shaft seal water injection system for the nuclear main pump (i.e., the reactor coolant pump) consists of a filter, valves, piping, and a water tank. The seal injection function relies on the weight of desalted water in a high-mounted tank. If the filter in the No. 3 shaft seal water injection system becomes clogged, the seal water injection flow will be interrupted, potentially leading to seal degradation and compromising the safety of nuclear reactor operations. Analysis and research have determined that microbial contamination in the No. 3 shaft seal water injection system is the root cause of the filter blockage.

[0003] Currently, the method for controlling microbial contamination in the No. 3 shaft seal water injection system for the nuclear main pump is to directly replace the filter in the system. However, simply replacing the filter to control microbial contamination in the No. 3 shaft seal water injection system for the nuclear main pump cannot guarantee the long-term reliability of the No. 3 shaft seal, and therefore cannot guarantee the safety of nuclear reactor operation. Summary of the Invention

[0004] Based on this, it is necessary to provide a microbial contamination control method, device, computer equipment and storage medium to address the above technical problems, which can ensure the long-term reliable operation of the No. 3 shaft seal of the nuclear main pump and thus ensure the safety of nuclear reactor operation.

[0005] In a first aspect, the present application provides a method for controlling microbial contamination, the method comprising:

[0006] Obtain the first actual microbial contamination value at the filter in the No. 3 shaft seal water injection system of the nuclear main pump;

[0007] Determine the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump based on the first actual microbial contamination value and the first standard microbial contamination value at the filter;

[0008] According to the degree of microbial contamination, determine the replacement conditions for the filter in the No. 3 shaft seal water injection system of the nuclear main pump, and replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions to achieve microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump.

[0009] In one embodiment, determining the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump according to the first actual microbial contamination value and the first standard microbial contamination value at the filter includes:

[0010] determining a difference between a first actual microbial contamination value and a first standard microbial contamination value at the filter;

[0011] If the difference is less than the first threshold, it is determined that the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump is slightly contaminated;

[0012] If the difference is greater than a first threshold value and less than a second threshold value, the degree of microbial contamination is determined to be moderate contamination; wherein the second threshold value is greater than the first threshold value;

[0013] If the difference is greater than the second threshold, the microbial contamination level is determined to be severe contamination.

[0014] In one embodiment, the conditions for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump are determined based on the degree of microbial contamination, including:

[0015] If the microbial contamination level is light contamination, the replacement condition for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump is determined to be that the water flow rate of the pipeline in the No. 3 shaft seal water injection system of the nuclear main pump is less than the water flow rate threshold of the pipeline;

[0016] If the degree of microbial contamination is moderate or severe, the replacement condition is determined to be that the second actual microbial contamination values ​​obtained at the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump are all less than the second standard microbial contamination value.

[0017] In one embodiment, if the microbial contamination level is moderate, the filter in the No. 3 shaft seal water injection system of the nuclear main pump is replaced according to the replacement conditions, including:

[0018] Control the flushing system to flush the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump;

[0019] After flushing, control the purge system to purge the water tank, pipelines and valves;

[0020] After the purging is completed, a second actual microbial contamination value is obtained at the water tank, pipeline and valve;

[0021] If any of the second actual microbial contamination values ​​obtained is greater than the second standard microbial contamination value, the process returns to flushing the water tank, pipelines, and valves in the No. 3 shaft seal water injection system of the nuclear main pump until the replacement conditions are met;

[0022] Replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0023] In one embodiment, if the microbial contamination level is severe, the filter in the No. 3 shaft seal water injection system of the nuclear main pump is replaced according to the replacement conditions, including:

[0024] Control the disinfection system to disinfect the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump;

[0025] After the disinfection is completed, the purge system is controlled to purge the water tank, pipelines and valves;

[0026] After the purge is completed, obtain the second actual microbial contamination value at the water tank, pipeline and valve;

[0027] If any of the second actual microbial contamination values ​​obtained is greater than the second standard microbial contamination value, the process returns to executing microbial disinfection of the water tank, pipelines, and valves in the No. 3 shaft seal water injection system of the nuclear main pump until the second actual microbial contamination value of the replacement condition is met;

[0028] Replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0029] In one embodiment, controlling the purge system to purge the water tank, pipelines, and valves includes:

[0030] A pre-set volume of gas is used to purge the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump.

[0031] In one embodiment, the control and disinfection system performs microbial disinfection on the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump, including:

[0032] Use gas with a pre-set temperature, concentration and volume to disinfect the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump for more than the specified time.

[0033] In a second aspect, the present application further provides a microbial contamination control device, comprising:

[0034] A value acquisition module is used to obtain a first actual microbial contamination value at the filter in the No. 3 shaft seal water injection system of the nuclear main pump;

[0035] a degree determination module, for determining the degree of microbial contamination of the No. 3 shaft seal water injection system of the nuclear main pump according to the first actual microbial contamination value and the first standard microbial contamination value at the filter;

[0036] The pollution control module is used to determine the replacement conditions of the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the degree of microbial contamination, and replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions to achieve microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump.

[0037] In a third aspect, the present application further provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0038] Obtain the first actual microbial contamination value at the filter in the No. 3 shaft seal water injection system of the nuclear main pump;

[0039] Determine the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump based on the first actual microbial contamination value and the first standard microbial contamination value at the filter;

[0040] According to the degree of microbial contamination, determine the replacement conditions for the filter in the No. 3 shaft seal water injection system of the nuclear main pump, and replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions to achieve microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump.

[0041] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the following steps:

[0042] Obtain the first actual microbial contamination value at the filter in the No. 3 shaft seal water injection system of the nuclear main pump;

[0043] Determine the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump based on the first actual microbial contamination value and the first standard microbial contamination value at the filter;

[0044] According to the degree of microbial contamination, determine the replacement conditions for the filter in the No. 3 shaft seal water injection system of the nuclear main pump, and replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions to achieve microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump.

[0045] In a fifth aspect, the present application further provides a computer program product, the computer program product comprising a computer program, which, when executed by a processor, implements the following steps:

[0046] Obtain the first actual microbial contamination value at the filter in the No. 3 shaft seal water injection system of the nuclear main pump;

[0047] Determine the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump based on the first actual microbial contamination value and the first standard microbial contamination value at the filter;

[0048] According to the degree of microbial contamination, determine the replacement conditions for the filter in the No. 3 shaft seal water injection system of the nuclear main pump, and replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions to achieve microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump.

[0049] The above-mentioned microbial contamination control method, device, computer equipment and storage medium obtain the first actual microbial contamination value at the filter in the No. 3 shaft seal water injection system of the nuclear main pump, and judge the microbial contamination degree of the No. 3 shaft seal water injection system of the nuclear main pump based on the obtained first actual microbial contamination value and the first standard microbial contamination value; further, according to the microbial contamination degree, determine the replacement conditions for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump, and then replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions, thereby achieving microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump. Compared with the scheme of directly replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump in the related art, the above scheme introduces the microbial contamination degree and uses the microbial contamination degree as a bridge to further introduce the replacement conditions for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump. Only when the replacement conditions are met, the filter in the No. 3 shaft seal water injection system of the nuclear main pump is replaced, thereby ensuring the long-term reliable operation of the No. 3 shaft seal of the nuclear main pump, thereby ensuring the safety of nuclear reactor operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A diagram of an application environment of a microbial contamination control method in one embodiment;

[0051] Figure 2 Schematic diagram of a process for controlling microbial contamination in one embodiment;

[0052] Figure 3 A schematic diagram of a process for controlling microbial contamination in the No. 3 shaft seal water injection system of a nuclear main pump according to an embodiment;

[0053] Figure 4 This is a schematic diagram of a process for controlling microbial contamination in the No. 3 shaft seal water injection system of a nuclear main pump in another embodiment;

[0054] Figure 5 A schematic flow chart of a method for controlling microbial contamination in another embodiment;

[0055] Figure 6 is a structural block diagram of a microbial contamination control device in one embodiment;

[0056] Figure 7 is a structural block diagram of a microbial contamination control device in another embodiment;

[0057] Figure 8 is a structural block diagram of a microbial contamination control device in yet another embodiment;

[0058] Figure 9 is a structural block diagram of a microbial contamination control device in yet another embodiment;

[0059] Figure 10 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0061] The microbial contamination control method provided in the embodiments of the present application can be applied to Figure 1 In the application environment shown. Among them, the operation and maintenance terminal 102 communicates with the server 104 through the network. Specifically, the server 104 determines the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump by obtaining the first actual microbial contamination value collected by the sensor at the filter of the No. 3 shaft seal water injection system of the nuclear main pump, combined with the first standard microbial contamination value; based on the determined microbial contamination level, the replacement condition of the filter in the No. 3 shaft seal water injection system of the nuclear main pump is determined; according to the replacement condition, combined with the control of the microbial contamination control system, the filter in the No. 3 shaft seal water injection system of the nuclear main pump is replaced to achieve microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump; wherein the microbial contamination control system can be a flushing system or a disinfection system; further, in this embodiment, the server 104 can interact with the operation and maintenance terminal 102 through the network, send a replacement instruction to the operation and maintenance terminal 102, and instruct the operation and maintenance personnel to replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump through the operation and maintenance terminal 102 to complete the microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump.

[0062] The operation and maintenance terminal 102 may be, but is not limited to, various personal computers, laptops, smartphones, tablets, IoT devices, and portable wearable devices. IoT devices may include smart speakers, smart TVs, smart air conditioners, and smart car devices. Portable wearable devices may include smart watches, smart bracelets, and head-mounted devices. The server 104 may be implemented as a standalone server or a server cluster consisting of multiple servers.

[0063] In one embodiment, Figure 2 As shown, a method for controlling microbial contamination is provided, which is applied to Figure 1 Taking the server 104 in the example as an example, the following steps are included:

[0064] S201, obtaining a first actual microbial contamination value at a filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0065] In this embodiment, the nuclear main pump is the reactor coolant pump in the primary circuit system of a nuclear power plant. The No. 3 shaft seal water injection system of the nuclear main pump consists of filters, valves, pipes, a water tank, and other components. The filter is the filtering device in the No. 3 shaft seal water injection system. The first actual microbial contamination value is the actual microbial contamination value collected at the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0066] Specifically, sampling can be carried out at the filter in the No. 3 shaft seal water injection system of the nuclear main pump, and the samples obtained at the filter in the No. 3 shaft seal water injection system of the nuclear main pump can be measured to obtain the microbial contamination value at the filter in the No. 3 shaft seal water injection system of the nuclear main pump, and the obtained microbial contamination value is used as the first actual microbial contamination value.

[0067] S202, determining the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump according to the first actual microbial contamination value and the first standard microbial contamination value at the filter.

[0068] In this embodiment, the so-called first standard microbial contamination value is a preset maximum tolerable microbial contamination value at the filter.

[0069] Specifically, after obtaining the first actual microbial contamination value, the first actual microbial contamination value can be compared with a preset first standard microbial contamination value, and the degree of microbial contamination of the No. 3 shaft seal water injection system of the nuclear main pump can be determined based on the comparison result. For example, if the first actual microbial contamination value is determined to be less than the preset first standard microbial contamination value, the degree of microbial contamination of the No. 3 shaft seal water injection system of the nuclear main pump can be determined to be moderately contaminated; if the first actual microbial contamination value is determined to be greater than the preset first standard microbial contamination value, the degree of microbial contamination of the No. 3 shaft seal water injection system of the nuclear main pump can be determined to be severely contaminated.

[0070] Alternatively, the difference between the first actual microbial contamination value and the first standard microbial contamination value at the filter can be determined; if the difference is less than the first threshold, the degree of microbial contamination of the No. 3 shaft seal water injection system of the nuclear main pump is determined to be lightly contaminated; if the difference is greater than the first threshold and less than the second threshold, the degree of microbial contamination is determined to be moderately contaminated; if the difference is greater than the second threshold, the degree of microbial contamination is determined to be heavily contaminated.

[0071] In this embodiment, the first threshold and the second threshold are both preset microbial contamination numerical thresholds, wherein the second threshold is greater than the first threshold.

[0072] Specifically, after obtaining the first actual microbial contamination value, the first actual microbial contamination value can be subtracted from the first standard microbial contamination value at the filter to determine the difference between the first actual microbial contamination value and the first standard microbial contamination value at the filter; further, the determined difference is compared with the first threshold; if the difference is less than the first threshold, the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump is determined to be slightly contaminated; if the difference is greater than the first threshold, the difference is further compared with the second threshold; if the difference is greater than the first threshold and less than the second threshold, the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump is determined to be moderately contaminated; if the difference is greater than the second threshold, the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump is determined to be heavily contaminated.

[0073] For example, the first standard microbial contamination value N1 at the filter is set to 500ppm..., and the difference between the obtained first actual microbial contamination value N0 and the first standard microbial contamination value N1 at the filter is obtained to obtain the difference ΔN = N0-N1. Further, the difference ΔN is compared with the pre-set first threshold value 0ppm. If ΔN≤0ppm, the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump is determined to be lightly contaminated; if ΔN>0ppm, the difference ΔN is compared with the pre-set second threshold value 10000ppm. If 0ppm<ΔN≤10000ppm, the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump is determined to be moderately contaminated; if ΔN>10000ppm, the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump is determined to be heavily contaminated.

[0074] The first standard microbial contamination value, the first threshold value, and the second threshold value can be set according to the needs of the operation and maintenance personnel. Optionally, the first standard microbial contamination value N1 can be determined from the range of 500ppm to 1000ppm; the preset first threshold value can be determined from the range of -1000ppm to 0ppm; the preset second threshold value can be determined from the range of 10000ppm to 10 8 Determined in the ppm range.

[0075] S203, based on the degree of microbial contamination, determine the replacement conditions for the filter in the No. 3 shaft seal water injection system of the nuclear main pump, and replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump based on the replacement conditions to achieve microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump.

[0076] In this embodiment, different microbial contamination levels correspond to different replacement conditions. Optionally, a correspondence between the microbial contamination levels and the replacement conditions can be pre-established.

[0077] Furthermore, after determining the degree of microbial contamination of the No. 3 shaft seal water injection system of the nuclear main pump, based on the established correspondence between the degree of microbial contamination and the replacement conditions, the corresponding replacement conditions for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump are determined according to the degree of microbial contamination; based on the determined replacement conditions, corresponding microbial contamination control measures are taken for the No. 3 shaft seal water injection system of the nuclear main pump; further, after determining that the No. 3 shaft seal water injection system of the nuclear main pump meets the corresponding replacement conditions after microbial contamination control, the filter in the No. 3 shaft seal water injection system of the nuclear main pump is replaced.

[0078] In one embodiment, a replacement instruction may be sent to the operation and maintenance terminal to instruct the operation and maintenance personnel to replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0079] Specifically, after determining that the second actual microbial contamination values ​​obtained at the water tanks, pipelines and valves are all smaller than the second standard microbial contamination values, a replacement instruction can be sent to the operation and maintenance terminal through the server, such as by controlling the indicator light to flash, or by causing a prompt dialog box to pop up on the display, to instruct the operation and maintenance personnel to replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0080] The above-mentioned microbial contamination control method obtains the first actual microbial contamination value at the filter in the No. 3 shaft seal water injection system of the nuclear main pump, and judges the microbial contamination degree of the No. 3 shaft seal water injection system of the nuclear main pump based on the obtained first actual microbial contamination value and the first standard microbial contamination value; further, according to the microbial contamination degree, determines the replacement conditions for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump, and then replaces the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions, thereby achieving microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump. Compared with the scheme of directly replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump in the related art, the above scheme introduces the microbial contamination degree and uses the microbial contamination degree as a bridge to further introduce the replacement conditions for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump. Only when the replacement conditions are met, the filter in the No. 3 shaft seal water injection system of the nuclear main pump is replaced, thereby ensuring the long-term reliable operation of the No. 3 shaft seal of the nuclear main pump, thereby ensuring the safety of nuclear reactor operation.

[0081] Furthermore, after completing microbial contamination control of the No. 3 shaft seal water injection system for the nuclear main pump, the No. 3 shaft seal water injection system can be restored to operation to verify its functional integrity. Specifically, the water tank in the No. 3 shaft seal water injection system can be refilled with water. By observing the frequency of water tank refilling, the normal operation of the No. 3 shaft seal water injection system can be verified.

[0082] For example, if the water tank replenishment frequency f is less than 2 times / week, it means that the operation of the No. 3 shaft seal water injection system of the nuclear main pump is abnormal, and the filter in the No. 3 shaft seal water injection system of the nuclear main pump can be replaced again, and the water tank replenishment frequency can be observed to verify whether the operation of the No. 3 shaft seal water injection system of the nuclear main pump is normal; if the water tank replenishment frequency f is greater than or equal to 2 times / week, it means that the operation of the No. 3 shaft seal water injection system of the nuclear main pump is normal, and after the No. 3 shaft seal water injection system of the nuclear main pump has been running for 18 months, the first actual microbial contamination value at the filter in the No. 3 shaft seal water injection system of the nuclear main pump can be collected again to control the microbial contamination of the No. 3 shaft seal water injection system of the nuclear main pump.

[0083] It is understandable that after completing the microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump, by observing the water tank replenishment frequency, it is verified whether the operation of the No. 3 shaft seal water injection system of the nuclear main pump is normal, ensuring the long-term operation reliability of the No. 3 shaft seal of the nuclear main pump, and thus ensuring the safety of the nuclear reactor operation.

[0084] Optionally, the replacement conditions for the filter in the No. 3 shaft seal water injection system of the nuclear main pump are different for different degrees of microbial contamination.

[0085] For example, if the degree of microbial contamination is light contamination, the replacement condition for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump is determined to be that the actual water flow rate of the pipeline in the No. 3 shaft seal water injection system of the nuclear main pump is less than the water flow threshold of the pipeline; if the degree of microbial contamination is moderate or heavy contamination, the replacement condition is determined to be that the second actual microbial contamination values ​​obtained at the water tank, pipeline and valve in the No. 3 shaft seal water injection system of the nuclear main pump are all less than the second standard microbial contamination value.

[0086] Specifically, if it is determined that the degree of microbial contamination of the No. 3 shaft seal water injection system of the nuclear main pump is lightly contaminated, the actual water flow rate of the pipeline in the No. 3 shaft seal water injection system of the nuclear main pump can be observed to determine the actual water flow rate of the pipeline in the No. 3 shaft seal water injection system of the nuclear main pump; further, the determined actual water flow rate is compared with the pre-set pipeline water flow threshold to determine whether the replacement conditions are met.

[0087] Alternatively, if the water flow rate in the pipeline of the No. 3 shaft seal water injection system of the nuclear main pump is observed to be less than a preset pipeline water flow threshold, the replacement condition is determined to be met, and the filter in the No. 3 shaft seal water injection system of the nuclear main pump can be replaced. If the water flow rate in the pipeline of the No. 3 shaft seal water injection system of the nuclear main pump is observed to be not less than the preset pipeline water flow threshold, the replacement condition is determined to be not met, and the filter can be left unchanged. Furthermore, after a preset period of time, the No. 3 shaft seal water injection system of the nuclear main pump is tested again to determine the degree of microbial contamination in the No. 3 shaft seal water injection system of the nuclear main pump.

[0088] Optionally, if it is determined that the degree of microbial contamination of the No. 3 shaft seal water injection system of the nuclear main pump is moderate or severe, corresponding microbial contamination control measures can be taken for moderate or severe contamination, and the second actual microbial contamination values ​​of the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump can be obtained. If the second actual microbial contamination values ​​of the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump obtained are all less than the second standard microbial contamination values, that is, the replacement conditions are met, at this time, the filter in the No. 3 shaft seal water injection system of the nuclear main pump can be replaced to achieve microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump.

[0089] It can be understood that the corresponding replacement conditions are determined according to the degree of microbial contamination; further, based on the corresponding replacement conditions, when the replacement conditions are met, the filter in the No. 3 shaft seal water injection system of the nuclear main pump is replaced to achieve microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump, thereby improving the flexibility of microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump with different microbial contamination degrees, thereby ensuring the long-term reliable operation of the No. 3 shaft seal of the nuclear main pump, thereby ensuring the safety of nuclear reactor operation.

[0090] Based on the above embodiment, in one embodiment, Figure 3 As shown, if the degree of microbial contamination is moderate, further refine the replacement of the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the above replacement conditions, which may include the following steps:

[0091] S301, control the flushing system to flush the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump.

[0092] In this embodiment, the flushing system is a system for flushing the No. 3 shaft seal water injection system of the nuclear main pump.

[0093] Specifically, after determining that the No. 3 shaft seal water injection system of the nuclear main pump is moderately contaminated, the server controls the flushing system and uses a pre-set liquid to flush the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump for more than the specified time.

[0094] For example, after determining that the No. 3 shaft seal water injection system of the nuclear main pump is moderately contaminated, the server controls the flushing system and uses desalted water to flush the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump for more than 30 minutes.

[0095] S302, after flushing is completed, control the purge system to purge the water tank, pipelines and valves.

[0096] Specifically, after flushing the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump, the server controls the purge system and uses a pre-set volume of gas to purge the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump.

[0097] For example, after flushing the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump, the server controls the purge system and uses dry 0.2MPa compressed air to purge the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump.

[0098] S303, after the purging is completed, obtaining a second actual microbial contamination value at the water tank, pipeline and valve.

[0099] Specifically, after the water tank, pipeline and valve in the No. 3 shaft seal water injection system of the nuclear main pump are purged, sampling can be carried out at the water tank, pipeline and valve in the No. 3 shaft seal water injection system of the nuclear main pump, and the samples obtained from the three sampling locations are measured to obtain the microbial contamination values ​​at the water tank, pipeline and valve, and the microbial contamination values ​​obtained at the three locations are used as the second actual microbial contamination values.

[0100] S304, determining whether the second actual microbial contamination values ​​are all smaller than the second standard microbial contamination values; if not, returning to S301; if so, executing S305.

[0101] In this embodiment, the second actual microbial contamination value is the preset microbial contamination value standard at the water tank, pipeline, and valve.

[0102] Specifically, after obtaining the second actual microbial contamination values ​​at the three locations, the obtained second actual microbial contamination values ​​are compared with the pre-set second standard microbial contamination values. Optionally, if any second actual microbial contamination value is greater than the second standard microbial contamination value, the server can be used to control the flushing system to flush the water tank, pipelines, and valves in the No. 3 shaft seal water injection system of the nuclear main pump again; after the flushing is completed, the purge system is controlled to purge the water tank, pipelines, and valves in the No. 3 shaft seal water injection system of the nuclear main pump again; further, the second actual microbial contamination values ​​at the water tank, pipeline, and valve are obtained again and compared with the second standard microbial contamination value, until the second actual microbial contamination values ​​at the three locations are all less than the second standard microbial contamination value.

[0103] For example, the second standard microbial contamination value N2 is set to 50ppm, and the second actual microbial contamination values ​​N3, N4, and N5 obtained at the three locations are compared with the second standard microbial contamination value. If any of the second actual microbial contamination values ​​N3, N4, and N5 is greater than the second standard microbial contamination value N2, then the water tanks, pipelines, and valves in the No. 3 shaft seal water injection system of the nuclear main pump are repeatedly flushed and purged, and the second actual microbial contamination value is obtained and compared with the second standard microbial contamination value. Among them, the second standard microbial contamination value can be set according to the needs of the operation and maintenance personnel. If the operation and maintenance personnel have a need, it can be set to a value consistent with the first standard microbial contamination value.

[0104] S305, replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0105] Specifically, after determining that the second actual microbial contamination values ​​collected at the three locations are all smaller than the second standard microbial contamination values, the filter in the No. 3 shaft seal water injection system of the nuclear main pump is replaced.

[0106] It is understandable that after determining that the No. 3 shaft seal water injection system of the nuclear main pump is moderately contaminated, the replacement conditions for the filter are introduced, that is, the second actual microbial contamination values ​​of the water tank, pipeline and valve in the No. 3 shaft seal water injection system of the nuclear main pump are all less than the second standard microbial contamination value, and only when the replacement conditions are met, the filter in the No. 3 shaft seal water injection system of the nuclear main pump is replaced, ensuring that the water tank, pipeline and valve in the No. 3 shaft seal water injection system of the nuclear main pump are not in a microbial contamination state before and after replacement, thereby ensuring the long-term operation reliability of the No. 3 shaft seal of the nuclear main pump after the filter is replaced, thereby ensuring the safety of nuclear reactor operation.

[0107] Based on the above embodiment, in one embodiment, Figure 4 As shown, if the degree of microbial contamination is severe, further refine the replacement of the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the above replacement conditions, which may include the following steps:

[0108] S401, control the disinfection system to carry out microbial disinfection on the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump.

[0109] In this embodiment, the disinfection system is a system for disinfecting and sterilizing the No. 3 shaft seal water injection system of the nuclear main pump.

[0110] Specifically, after determining that the No. 3 shaft seal water injection system of the nuclear main pump is severely contaminated, the server controls the disinfection system and uses a pre-set temperature, concentration and volume of gas to disinfect the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump for more than the specified time.

[0111] For example, after determining that the No. 3 shaft seal water injection system of the nuclear main pump is severely contaminated, the server controls the disinfection system and uses hydrogen peroxide vapor with a temperature exceeding 80°C, a concentration exceeding 100 ppm and a pressure of 0.2 MPa to disinfect the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump for more than 40 minutes.

[0112] S402: After the disinfection is completed, the purge system is controlled to purge the water tank, pipelines and valves.

[0113] Specifically, after the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump are disinfected, the server controls the purge system and uses a pre-set volume of gas to purge the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump.

[0114] For example, after the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump are disinfected, the server controls the purge system and uses dry 0.2MPa compressed air to purge the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump for more than 2 minutes to remove residual hydrogen peroxide gas.

[0115] S403, after the purge is completed, obtain the second actual microbial contamination value at the water tank, pipeline and valve.

[0116] Specifically, after the water tank, pipeline and valve in the No. 3 shaft seal water injection system of the nuclear main pump are purged, sampling can be carried out at the water tank, pipeline and valve in the No. 3 shaft seal water injection system of the nuclear main pump, and the samples obtained from the three sampling locations are measured to obtain the microbial contamination values ​​at the water tank, pipeline and valve, and the microbial contamination values ​​obtained at the three locations are used as the second actual microbial contamination values.

[0117] S404, determining whether the second actual microbial contamination values ​​are all smaller than the second standard microbial contamination values; if not, returning to S401; if so, executing S405.

[0118] Specifically, after obtaining the second actual microbial contamination values ​​at the three locations, the obtained second actual microbial contamination values ​​are compared with the pre-set second standard microbial contamination values. Optionally, if any second actual microbial contamination value is greater than the second standard microbial contamination value, the server can be used to control the disinfection system to disinfect the water tanks, pipelines, and valves in the No. 3 shaft seal water injection system of the nuclear main pump again; after the disinfection is completed, the purge system is controlled to purge the water tanks, pipelines, and valves in the No. 3 shaft seal water injection system of the nuclear main pump again; further, the second actual microbial contamination values ​​at the water tanks, pipelines, and valves are collected again and compared with the second standard microbial contamination values, until the second actual microbial contamination values ​​at the three locations are all less than the second standard microbial contamination values.

[0119] For example, the obtained second actual microbial contamination values ​​N3, N4, and N5 at three locations are compared with the second standard microbial contamination value. If any of N3, N4, and N5 is greater than the second standard microbial contamination value N2, the water tank, pipelines, and valves in the No. 3 shaft seal water injection system of the nuclear main pump are repeatedly flushed and purged, and the second actual microbial contamination value is obtained and compared with the second standard microbial contamination value.

[0120] S405, replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0121] Specifically, after determining that the second actual microbial contamination values ​​obtained at the three locations are all smaller than the second standard microbial contamination values, the filter in the No. 3 shaft seal water injection system of the nuclear main pump is replaced.

[0122] It is understandable that after determining that the No. 3 shaft seal water injection system of the nuclear main pump is heavily contaminated, the replacement conditions for the filter are introduced, that is, the second actual microbial contamination values ​​of the water tank, pipeline and valve in the No. 3 shaft seal water injection system of the nuclear main pump are all less than the second standard microbial contamination value, and only when the replacement conditions are met, the filter in the No. 3 shaft seal water injection system of the nuclear main pump is replaced, ensuring that the water tank, pipeline and valve in the No. 3 shaft seal water injection system of the nuclear main pump are not in a microbial contamination state before and after replacement, thereby ensuring the long-term operation reliability of the No. 3 shaft seal of the nuclear main pump after the filter is replaced, thereby ensuring the safety of nuclear reactor operation.

[0123] In one embodiment, Figure 5 As shown, a preferred embodiment of a microbial contamination control method is provided, which specifically includes:

[0124] S501, obtaining a first actual microbial contamination value at a filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0125] S502 : Determine a difference between a first actual microbial contamination value and a first standard microbial contamination value at the filter.

[0126] S503, determine whether the difference is greater than a first threshold; if so, execute S504; if not, execute S513.

[0127] S504, determine whether the difference is greater than a second threshold; if so, execute S505; if not, execute S509.

[0128] The second threshold is greater than the first threshold.

[0129] S505, determine that the degree of microbial contamination is severe contamination.

[0130] S506, using a gas of a pre-set temperature, concentration and volume, to sterilize the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump for a period exceeding the prescribed time.

[0131] S507: Use a pre-set volume of gas to purge the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump.

[0132] S508, obtain the second actual microbial contamination value at the water tank, pipeline and valve, compare the second actual microbial contamination value with the second standard microbial contamination value, and determine whether the second actual microbial contamination value is less than the second standard microbial contamination value; if so, execute S515; if not, return to execute S506.

[0133] S509, determine that the degree of microbial contamination is moderate contamination.

[0134] S510, control the flushing system to flush the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump.

[0135] S511: Use a pre-set volume of gas to purge the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump.

[0136] S512, obtain the second actual microbial contamination value at the water tank, pipeline and valve, compare the second actual microbial contamination value with the second standard microbial contamination value, and determine whether the second actual microbial contamination value is less than the second standard microbial contamination value; if so, execute S515; if not, return to execute S510.

[0137] S513, determine that the degree of microbial contamination is mild contamination.

[0138] S514: Determine whether the actual water flow rate of the pipeline in the No. 3 shaft seal water injection system of the nuclear main pump is less than the water flow rate threshold of the pipeline; further, execute S515.

[0139] S515, replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0140] The specific process of the above S501-S515 can be found in the description of the above method embodiment. The implementation principle and technical effects are similar and will not be repeated here.

[0141] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0142] Based on the same inventive concept, the present application also provides a microbial contamination control device for implementing the aforementioned microbial contamination control method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more microbial contamination control device embodiments provided below can be found in the aforementioned limitations of the microbial contamination control method and will not be further elaborated here.

[0143] In one embodiment, Figure 6 As shown, a microbial contamination control device 1 is provided, comprising: a value acquisition module 10, a degree determination module 20 and a contamination control module 30, wherein:

[0144] The value acquisition module 10 is used to obtain the first actual microbial contamination value at the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0145] The degree determination module 20 is used to determine the microbial contamination degree of the No. 3 shaft seal water injection system of the nuclear main pump based on the first actual microbial contamination value and the first standard microbial contamination value at the filter.

[0146] The pollution control module 30 is used to determine the replacement conditions of the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the degree of microbial contamination, and replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions to achieve microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump.

[0147] In one embodiment, in the above Figure 6 On the basis of Figure 7 As shown, the degree determination module 20 may include:

[0148] a difference determination unit 21 for determining a difference between a first actual microbial contamination value and a first standard microbial contamination value at the filter;

[0149] The degree determination unit 22 is used to determine that the degree of microbial contamination in the No. 3 shaft seal water injection system of the nuclear main pump is lightly contaminated if the difference is less than a first threshold value; if the difference is greater than the first threshold value and less than a second threshold value, the degree of microbial contamination is determined to be moderately contaminated; wherein the second threshold value is greater than the first threshold value; if the difference is greater than the second threshold value, the degree of microbial contamination is determined to be heavily contaminated.

[0150] In one embodiment, the pollution control module 30 may be used to:

[0151] If the degree of microbial contamination is mild, the replacement condition for the filter in the No. 3 shaft seal water injection system of the nuclear main pump is determined to be that the actual water flow rate of the pipeline in the No. 3 shaft seal water injection system of the nuclear main pump is less than the water flow threshold of the pipeline; if the degree of microbial contamination is moderate or severe, the replacement condition is determined to be that the second actual microbial contamination values ​​obtained at the water tank, pipeline and valve in the No. 3 shaft seal water injection system of the nuclear main pump are all less than the second standard microbial contamination value.

[0152] In one embodiment, in the above Figure 6 or Figure 7 On the basis of, if the degree of microbial contamination is moderate, such as Figure 8 As shown, the pollution control module 30 may include:

[0153] Flushing unit 31, used to control the flushing system to flush the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump;

[0154] The first purge unit 32 is used to control the purge system to purge the water tank, pipelines and valves after flushing is completed;

[0155] The first value collecting unit 33 is used to collect the second actual microbial contamination value at the water tank, pipeline and valve after the purging is completed;

[0156] The first value comparison unit 34 is configured to compare the collected second actual microbial contamination value with the second standard microbial contamination value; if any of the collected second actual microbial contamination values ​​is greater than the second standard microbial contamination value, the process returns to flushing the water tank, pipelines, and valves in the No. 3 shaft seal water injection system of the nuclear main pump until replacement conditions are met;

[0157] The first filter replacement unit 35 is used to replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0158] In one embodiment, in the above Figure 6 or Figure 7 On the basis of, if the degree of microbial contamination is severe, such as Figure 9 As shown, the pollution control module 30 may further include:

[0159] The disinfection unit 36 ​​is used to control the disinfection system to disinfect the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump to perform microbial disinfection;

[0160] The second purge unit 37 is used to control the purge system to purge the water tank, pipelines and valves after the disinfection is completed;

[0161] A second value collection unit 38 is used to collect a second actual microbial contamination value at the water tank, pipeline and valve after the purge is completed;

[0162] The second value comparison unit 39 is configured to compare the collected second actual microbial contamination value with the second standard microbial contamination value. If any of the collected second actual microbial contamination values ​​is greater than the second standard microbial contamination value, the process returns to executing microbial disinfection of the water tank, pipelines, and valves in the No. 3 shaft seal water injection system of the nuclear main pump until replacement conditions are met.

[0163] The second filter replacement unit 310 is used to replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0164] In one embodiment, the first purge unit 32 and the second purge unit 37 may be used to:

[0165] Use a pre-set volume of gas to purge the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump.

[0166] In one embodiment, the disinfection unit 36 ​​can be used to:

[0167] Use gas with a pre-set temperature, concentration and volume to disinfect the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump for more than the specified time.

[0168] Each module in the aforementioned microbial contamination control device may be implemented in whole or in part through software, hardware, or a combination thereof. Each module may be embedded in or independent of a processor in a computer device in the form of hardware, or may be stored in a computer device memory in the form of software, so that the processor can call and execute the corresponding operations of each module.

[0169] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 10 As shown. The computer device includes a processor, a memory and a network interface connected via a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data such as a first standard microbial contamination value and a second standard microbial contamination value. The network interface of the computer device is used to communicate with an external terminal via a network connection. When the computer program is executed by the processor, a method for controlling microbial contamination is implemented.

[0170] Those skilled in the art will understand that Figure 10 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0171] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0172] Obtain the first actual microbial contamination value at the filter in the No. 3 shaft seal water injection system of the nuclear main pump;

[0173] Determine the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump based on the first actual microbial contamination value and the first standard microbial contamination value at the filter;

[0174] According to the degree of microbial contamination, determine the replacement conditions for the filter in the No. 3 shaft seal water injection system of the nuclear main pump, and replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions to achieve microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump.

[0175] In one embodiment, when the processor executes the computer program to determine the logic of the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump based on the first actual microbial contamination value and the first standard microbial contamination value at the filter, the processor further implements the following steps:

[0176] Determine the difference between the first actual microbial contamination value and the first standard microbial contamination value at the filter; if the difference is less than the first threshold, determine that the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump is slightly contaminated; if the difference is greater than the first threshold and less than the second threshold, determine that the microbial contamination level is moderately contaminated; wherein the second threshold is greater than the first threshold; if the difference is greater than the second threshold, determine that the microbial contamination level is severely contaminated.

[0177] In one embodiment, when the processor executes the computer program to determine the logic of the replacement condition for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump based on the degree of microbial contamination, the processor further implements the following steps:

[0178] If the degree of microbial contamination is mild, the replacement condition for the filter in the No. 3 shaft seal water injection system of the nuclear main pump is determined to be that the actual water flow rate of the pipeline in the No. 3 shaft seal water injection system of the nuclear main pump is less than the water flow threshold of the pipeline; if the degree of microbial contamination is moderate or severe, the replacement condition is determined to be that the second actual microbial contamination values ​​obtained at the water tank, pipeline and valve in the No. 3 shaft seal water injection system of the nuclear main pump are all less than the second standard microbial contamination value.

[0179] In one embodiment, if the microbial contamination level is moderate, when the processor executes the computer program to replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions, the following steps are also implemented:

[0180] Control the flushing system to flush the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump; after the flushing is completed, control the purge system to purge the water tank, pipelines and valves; after the purge is completed, obtain the second actual microbial contamination value at the water tank, pipeline and valve; if any of the second actual microbial contamination values ​​obtained is greater than the second standard microbial contamination value, return to execute the flushing of the water tank, pipeline and valves in the No. 3 shaft seal water injection system of the nuclear main pump until the replacement conditions are met; replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0181] In one embodiment, if the microbial contamination level is severe, when the processor executes the computer program to replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions, the following steps are also implemented:

[0182] Control the disinfection system to perform microbial disinfection on the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump; after the disinfection is completed, control the purge system to purge the water tanks, pipelines and valves; after the purge is completed, obtain the second actual microbial contamination value at the water tanks, pipelines and valves; if any of the collected second actual microbial contamination values ​​is greater than the second standard microbial contamination value, return to execute microbial disinfection on the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump until the replacement conditions are met; replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0183] In one embodiment, when the processor executes the logic of the computer program to control the purge system to purge the water tank, pipelines, and valves, the processor further implements the following steps:

[0184] A pre-set volume of gas is used to purge the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump.

[0185] In one embodiment, when the processor executes the logic of the computer program to control the disinfection system to perform microbial disinfection on the water tank, pipelines, and valves in the No. 3 shaft seal water injection system of the nuclear main pump, the processor also implements the following steps:

[0186] Use gas with a pre-set temperature, concentration and volume to disinfect the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump for more than the specified time.

[0187] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0188] Obtain the first actual microbial contamination value at the filter in the No. 3 shaft seal water injection system of the nuclear main pump;

[0189] Determine the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump based on the first actual microbial contamination value and the first standard microbial contamination value at the filter;

[0190] According to the degree of microbial contamination, determine the replacement conditions for the filter in the No. 3 shaft seal water injection system of the nuclear main pump, and replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions to achieve microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump.

[0191] In one embodiment, when the computer program is executed by a processor, the logic for determining the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump based on the first actual microbial contamination value and the first standard microbial contamination value at the filter further implements the following steps:

[0192] Determine the difference between the first actual microbial contamination value and the first standard microbial contamination value at the filter; if the difference is less than the first threshold, determine that the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump is slightly contaminated; if the difference is greater than the first threshold and less than the second threshold, determine that the microbial contamination level is moderately contaminated; wherein the second threshold is greater than the first threshold; if the difference is greater than the second threshold, determine that the microbial contamination level is severely contaminated.

[0193] In one embodiment, when the computer program is executed by a processor, the logic for determining the replacement condition of the filter in the No. 3 shaft seal water injection system of the nuclear main pump based on the degree of microbial contamination further implements the following steps:

[0194] If the degree of microbial contamination is mild, the replacement condition for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump is determined to be that the actual water flow rate of the pipeline in the No. 3 shaft seal water injection system of the nuclear main pump is less than the water flow threshold of the pipeline; if the degree of microbial contamination is moderate or severe, the replacement condition is determined to be that the second actual microbial contamination values ​​obtained at the water tank, pipeline and valve in the No. 3 shaft seal water injection system of the nuclear main pump are all less than the second standard microbial contamination value.

[0195] In one embodiment, if the microbial contamination level is moderate, when the computer program is executed by the processor for logic for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions, the following steps are also implemented:

[0196] Control the flushing system to flush the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump; after the flushing is completed, control the purge system to purge the water tank, pipelines and valves; after the purge is completed, obtain the second actual microbial contamination value at the water tank, pipeline and valve; if any of the second actual microbial contamination values ​​obtained is greater than the second standard microbial contamination value, return to execute the flushing of the water tank, pipeline and valves in the No. 3 shaft seal water injection system of the nuclear main pump until the replacement conditions are met; replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0197] In one embodiment, if the microbial contamination level is severe, when the computer program is executed by the processor for logic for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions, the following steps are also implemented:

[0198] Control the disinfection system to perform microbial disinfection on the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump; after the disinfection is completed, control the purge system to purge the water tanks, pipelines and valves; after the purge is completed, obtain the second actual microbial contamination value at the water tanks, pipelines and valves; if any of the second actual microbial contamination values ​​obtained is greater than the second standard microbial contamination value, return to execute microbial disinfection on the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump until the replacement conditions are met; replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0199] In one embodiment, when the computer program is executed by the processor according to the logic of controlling the purge system to purge the water tank, pipelines and valves, the computer program further implements the following steps:

[0200] A preset volume of gas is used to purge the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump.

[0201] In one embodiment, when the computer program is executed by a processor according to the logic of controlling the disinfection system to perform microbial disinfection on the water tank, pipelines, and valves in the No. 3 shaft seal water injection system of the nuclear main pump, the following steps are also implemented:

[0202] Use gas with a pre-set temperature, concentration and volume to disinfect the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump for more than the specified time.

[0203] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0204] Obtain the first actual microbial contamination value at the filter in the No. 3 shaft seal water injection system of the nuclear main pump;

[0205] Determine the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump based on the first actual microbial contamination value and the first standard microbial contamination value at the filter;

[0206] According to the degree of microbial contamination, determine the replacement conditions for the filter in the No. 3 shaft seal water injection system of the nuclear main pump, and replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions to achieve microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump.

[0207] In one embodiment, when the computer program is executed by a processor, the logic for determining the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump based on the first actual microbial contamination value and the first standard microbial contamination value at the filter further implements the following steps:

[0208] Determine the difference between the first actual microbial contamination value and the first standard microbial contamination value at the filter; if the difference is less than the first threshold, determine that the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump is slightly contaminated; if the difference is greater than the first threshold and less than the second threshold, determine that the microbial contamination level is moderately contaminated; wherein the second threshold is greater than the first threshold; if the difference is greater than the second threshold, determine that the microbial contamination level is severely contaminated.

[0209] In one embodiment, when the computer program is executed by a processor, the logic for determining the replacement condition of the filter in the No. 3 shaft seal water injection system of the nuclear main pump based on the degree of microbial contamination further implements the following steps:

[0210] If the degree of microbial contamination is mild, the replacement condition for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump is determined to be that the water flow rate of the pipeline in the No. 3 shaft seal water injection system of the nuclear main pump is less than the water flow rate threshold of the pipeline; if the degree of microbial contamination is moderate or severe, the replacement condition is determined to be that the second actual microbial contamination values ​​obtained at the water tank, pipeline and valve in the No. 3 shaft seal water injection system of the nuclear main pump are all less than the second standard microbial contamination value.

[0211] In one embodiment, if the microbial contamination level is moderate, when the computer program is executed by the processor for logic for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions, the following steps are also implemented:

[0212] Control the flushing system to flush the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump; after the flushing is completed, control the purge system to purge the water tank, pipelines and valves; after the purge is completed, obtain the second actual microbial contamination value at the water tank, pipeline and valve; if any of the second actual microbial contamination values ​​obtained is greater than the second standard microbial contamination value, return to execute the flushing of the water tank, pipeline and valves in the No. 3 shaft seal water injection system of the nuclear main pump until the replacement conditions are met; replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0213] In one embodiment, if the microbial contamination level is severe, when the computer program is executed by the processor for logic for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump according to the replacement conditions, the following steps are also implemented:

[0214] Control the disinfection system to perform microbial disinfection on the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump; after the disinfection is completed, control the purge system to purge the water tanks, pipelines and valves; after the purge is completed, obtain the second actual microbial contamination value at the water tanks, pipelines and valves; if any of the second actual microbial contamination values ​​obtained is greater than the second standard microbial contamination value, return to execute microbial disinfection on the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump until the replacement conditions are met; replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

[0215] In one embodiment, when the computer program is executed by the processor according to the logic of controlling the purge system to purge the water tank, pipelines and valves, the computer program further implements the following steps:

[0216] A pre-set volume of gas is used to purge the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump.

[0217] In one embodiment, when the computer program is executed by a processor according to the logic of controlling the disinfection system to perform microbial disinfection on the water tank, pipelines, and valves in the No. 3 shaft seal water injection system of the nuclear main pump, the following steps are also implemented:

[0218] Use gas with a pre-set temperature, concentration and volume to disinfect the water tanks, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump for more than the specified time.

[0219] It should be noted that the data involved in this application (including but not limited to the first standard microbial contamination value, the second standard microbial contamination value and other data) are all information and data that have been authorized or fully authorized by all parties.

[0220] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processor involved in the various embodiments provided herein may be, but are not limited to, a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, and the like.

[0221] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0222] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A method for controlling microbial contamination, characterized in that: The method comprises: Obtain the first actual microbial contamination value at the filter in the No. 3 shaft seal water injection system of the nuclear main pump; determining the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump according to the first actual microbial contamination value and the first standard microbial contamination value at the filter; If the microbial contamination level is light contamination, determining that a replacement condition for the filter in the No. 3 shaft seal water injection system of the nuclear main pump is that the actual water flow rate of the pipeline in the No. 3 shaft seal water injection system of the nuclear main pump is less than the water flow rate threshold of the pipeline; If the microbial contamination level is moderate or severe, the replacement condition is determined to be that the second actual microbial contamination values ​​obtained for the water tank, pipeline, and valve in the No. 3 shaft seal water injection system of the nuclear main pump are all less than the second standard microbial contamination value; According to the replacement conditions, the filter in the No. 3 shaft seal water injection system of the nuclear main pump is replaced to achieve microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump.

2. The method according to claim 1, characterized in that Determining the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump according to the first actual microbial contamination value and the first standard microbial contamination value at the filter includes: determining a difference between the first actual microbial contamination value and a first standard microbial contamination value at the filter; If the difference is less than the first threshold, it is determined that the microbial contamination level of the No. 3 shaft seal water injection system of the nuclear main pump is slightly contaminated; If the difference is greater than the first threshold and less than a second threshold, the microbial contamination level is determined to be moderate; wherein the second threshold is greater than the first threshold; If the difference is greater than the second threshold, the microbial contamination level is determined to be severe contamination.

3. The method according to claim 1, characterized in that If the microbial contamination level is moderate, then according to the replacement conditions, the filter in the No. 3 shaft seal water injection system of the nuclear main pump is replaced, including: Control the flushing system to flush the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump; After flushing is completed, controlling the purge system to purge the water tank, pipelines and valves; After the purging is completed, obtaining a second actual microbial contamination value at the water tank, pipeline, and valve; If any second actual microbial contamination value obtained is greater than the second standard microbial contamination value, the process returns to flushing the water tank, pipelines, and valves in the No. 3 shaft seal water injection system of the nuclear main pump until the replacement condition is met; Replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

4. The method according to claim 1, wherein If the microbial contamination level is severe, then according to the replacement conditions, the filter in the No. 3 shaft seal water injection system of the nuclear main pump is replaced, including: Control the disinfection system to perform microbial disinfection on the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump; After the disinfection is completed, the purge system is controlled to purge the water tank, pipelines and valves; After the purging is completed, obtaining a second actual microbial contamination value at the water tank, pipeline, and valve; If any second actual microbial contamination value obtained is greater than the second standard microbial contamination value, the process returns to executing microbial disinfection of the water tank, pipelines, and valves in the No. 3 shaft seal water injection system of the nuclear main pump until the replacement condition is met; Replace the filter in the No. 3 shaft seal water injection system of the nuclear main pump.

5. The method according to claim 3 or 4, characterized in that The control purge system is used to purge the water tank, pipelines and valves, including: A preset volume of gas is used to purge the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump.

6. The method according to claim 4, characterized in that The control and disinfection system performs microbial disinfection on the water tank, pipelines and valves in the No. 3 shaft seal water injection system of the nuclear main pump, including: The water tank, pipeline and valve in the No. 3 shaft seal water injection system of the nuclear main pump are disinfected for more than the specified time using a gas of a predetermined temperature, concentration and volume.

7. A microbial contamination control device, characterized in that: The device comprises: A value acquisition module is used to obtain a first actual microbial contamination value at the filter in the No. 3 shaft seal water injection system of the nuclear main pump; a degree determination module, configured to determine the degree of microbial contamination of the No. 3 shaft seal water injection system of the nuclear main pump according to the first actual microbial contamination value and the first standard microbial contamination value at the filter; The pollution control module is used to determine that if the degree of microbial contamination is light pollution, the replacement condition for replacing the filter in the No. 3 shaft seal water injection system of the nuclear main pump is that the actual water flow rate of the pipeline in the No. 3 shaft seal water injection system of the nuclear main pump is less than the water flow threshold of the pipeline; if the degree of microbial contamination is moderate pollution or heavy pollution, the replacement condition is determined to be that the second actual microbial contamination values ​​obtained at the water tank, pipeline and valve in the No. 3 shaft seal water injection system of the nuclear main pump are all less than the second standard microbial contamination value, and according to the replacement condition, the filter in the No. 3 shaft seal water injection system of the nuclear main pump is replaced to achieve microbial contamination control of the No. 3 shaft seal water injection system of the nuclear main pump.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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