CN108665185A - A kind of design method of nuclear power plant's malfunction protocol scope of application - Google Patents
A kind of design method of nuclear power plant's malfunction protocol scope of application Download PDFInfo
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- 230000007257 malfunction Effects 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 21
- 238000004458 analytical method Methods 0.000 claims description 31
- 230000001052 transient effect Effects 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 5
- 230000000116 mitigating effect Effects 0.000 claims description 5
- 238000004088 simulation Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 230000007123 defense Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 101100533323 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) SFM1 gene Proteins 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The invention belongs to nuclear power plant's running technology fields, are related to a kind of design method of nuclear power plant's malfunction protocol scope of application.The design method in turn includes the following steps：(1) it is formed and originates accident inventory；(2) superposition accident library is formed；(3) it forms covering accident and blocks probability；(4) malfunction protocol and upstream document scope of application accident inventory are formed.Utilize the design method of nuclear power plant's malfunction protocol scope of application of the present invention, it can obtain and the design method of single accident that clear nuclear power plant's malfunction protocol and upstream document should cover and superposition accident inventory, to provide foundation for the malfunction protocol and upstream document for formulating new nuclear power factory, and it can be used for assessing the ability and reasonability of in-service Power Plant Accident regulation.
Description
Technical field
The invention belongs to nuclear power plant's running technology fields, are related to a kind of design side of nuclear power plant's malfunction protocol scope of application
Method.
Background technology
Nuclear power plant system is complicated, operating parameter is various, when there is subsystem or equipment fault, can cause to deviate normal fortune
Row operating mode.Nuclear power plant deviate it is more important in accidental conditions may trigger automatic shutdown, such operating mode is known as event,
There may be the referred to as accidents of Radiological Consequences outside reactor core damage and/or factory in event.Once there is event or accident in nuclear power plant
Operating mode is considered as entering the state of emergency, it is desirable that operator responds rapidly to, and corrects operating mode and deviates, and takes necessary action to keep away
Exempt from or mitigate possible consequence.
To ensure npp safety, trying to avert accidents or mitigating its consequence as possible after accident, depth defense is nuclear power
Most basic concept in factory's design, and in the specific implementation of depth defense, the correct operation of operator and response are most important.
The Experience Feedback of previous nuclear power plant accident has shown that correct accident operating standard is to ensure the successful key factor of depth defense
One of.
The general accident operating standard of nuclear power industry is included mainly the malfunction protocol being oriented to based on event, is based on state at present
The malfunction protocol of guiding and the malfunction protocol three categories being oriented to based on sign.These malfunction protocols are at the place of nuclear power plant's accident conditions
There is respective and specific aim in reason, but copes with accident range without clearly respective, it is also not scientific and reasonable
Design method determines the respective scope of application.This makes these malfunction protocols in true nuclear power plant runs to accident mitigation
Depth defense ability lacks assessment foundation, can not find the weakness for simultaneously targetedly strengthening malfunction protocol.
Invention content
The object of the present invention is to provide a kind of design method of nuclear power plant's malfunction protocol scope of application, can obtain and bright
The design method of single accident and superposition accident inventory that true nuclear power plant's malfunction protocol and upstream document should cover, to be to formulate
The malfunction protocol and upstream document of new nuclear power factory provide foundation, and can be used for assessing ability and the conjunction of in-service Power Plant Accident regulation
Rationality.
In order to achieve this, in the embodiment on basis, the present invention provides a kind of nuclear power plant's malfunction protocol scope of application
Design method, the design method in turn includes the following steps：
(1) it is formed and originates accident inventory；
(2) superposition accident library is formed；
(3) it forms covering accident and blocks probability；
(4) malfunction protocol and upstream document scope of application accident inventory are formed.
Nuclear power plant's malfunction protocol is used to cope with the event that can trigger emergency shut-down or the ad hoc action of triggering, by determining opinion point
Analysis can determine that malfunction protocol and upstream document be considered as originates accident, and clearly originate the security function of accident impact and slow
Related system and equipment necessary to solution accident, based on this determination superposition accident library.Due to design of nuclear power plant complexity, only by true
The determining superposition accident library of final conclusion analysis may be very huge, and which part accident sequence probability of happening is extremely low, can be by general
The analysis of rate opinion is screened out, to realize that malfunction protocol and upstream document in design take into account safety and economy.Therefore
Nuclear power plant's malfunction protocol and the upstream document scope of application, which should fully consider, determines two aspect of opinion analysis and probability theory analysis.
In a preferred embodiment, the present invention provides a kind of design side of nuclear power plant's malfunction protocol scope of application
The accident inventory that originates formed in method, wherein step (1) includes：
Consider in the npp safety analysis determined based on the npp safety analytical conclusions and associated safety analysis report
Design basis accident inventory；
The transient state inventory being considered as determined based on nuclear power plant's transient analysis；
Based on operating experience, the event that other same type nuclear power plants occurred both at home and abroad is assessed, through combing determining accident
Inventory；
In conjunction with domestic and international relevant laws and regulations standard, chooses in regulation and be distinctly claimed the single accident considered in design of nuclear power plant
Inventory.
In a preferred embodiment, the present invention provides a kind of design side of nuclear power plant's malfunction protocol scope of application
In method, wherein step (1), various types of originate is determined that summarizes originates accident inventory after the collated analysis of accident inventory
list-IA。
In a preferred embodiment, the present invention provides a kind of design side of nuclear power plant's malfunction protocol scope of application
Method, wherein step (2) include following sub-step：
1) it is directed to and each originates accident, carry out simulation and calculate analysis, determine that this originates nuclear power plant's key of accident impact and pacifies
Global function is aggregated to form impacted security function inventory list-SF；
2) influence and threat degree of each security function to unit nuclear safety in list-SF is combined to carry out priority arrangement；
3) it is directed to each security function in list-SF, is designed in conjunction with nuclear power plant system, determines that alleviation originates accident impact safety
The corresponding system of function and equipment, and the positioning and fail-safe analysis of related system and equipment are combined, determining be directed to originates accident
The sequence matrix of the corresponding mitigation strategy of each security function in inventory；
4) according to associated safety function SFx in the list-SF for respectively originating accident impact in accident inventory is originated, beginning
Consider that different SFMxy, SFMxz ... failures occurs for superposition on the basis of hair accident, to form superposition accident library list-
MA。
In a preferred embodiment, the present invention provides a kind of design side of nuclear power plant's malfunction protocol scope of application
Method, wherein step (3) include following sub-step：
1) it is based on PSA (Probabilistic Safety Analysis, probabilistic safety analysis) to analyze, determination originates thing
Therefore probability of happening and key security functionality alleviate the failure probability inventory of system and equipment；
CDF (Core damage frequency, core damage frequency) general objective requirement in being analyzed based on nuclear power plant PSA,
The superposition contingency occurrence probability that determination need to consider blocks probability TP (Truncate Probabilistic), for being less than this
The sequence of probability, it is believed that its possibility occurrence is too low, and CDF total to nuclear power plant contributes very little, can not consider, and is higher than the probability
Sequence should be included in malfunction protocol coverage area.
In a preferred embodiment, the present invention provides a kind of design side of nuclear power plant's malfunction protocol scope of application
Method, wherein step (4) include following sub-step：
1) it is based on contingency occurrence probability and system equipment failure probability inventory, determines each accident sequence in superposition accident library
Probability of happening；
2) by fixed TP, the superposition accident inventory being considered as in interception accidents happened regulation and upstream document is formed
The scope of application list-EA of malfunction protocol.
The beneficial effects of the present invention are utilize the design method of nuclear power plant's malfunction protocol scope of application of the present invention, energy
It accesses and the design method of single accident that clear nuclear power plant's malfunction protocol and upstream document should cover and superposition accident inventory,
To provide foundation for the malfunction protocol and upstream document for formulating new nuclear power factory, and it can be used for assessing in-service Power Plant Accident regulation
Ability and reasonability.
The present invention based on opinion and probability theory analysis is determined, proposes for the first time and specifies nuclear power plant's malfunction protocol and upstream document
The design method of the single accident and superposition accident inventory that should cover.Design method provided by the present invention can be used for instructing novel
The malfunction protocol and upstream document of nuclear power type design, it can also be used to which in-service nuclear power plant determines that its malfunction protocol and upstream document are answered
Coverage area has found that it is likely that defect is gone forward side by side the hand-manipulating of needle pair as early as possible for assessing in the reasonability with malfunction protocol and upstream document
The improvement of property.In addition, malfunction protocol and upstream document coverage area that the design method provided in the present invention determines are alternatively newly
It builds and in-service nuclear power plant's accident treatment is simulated and training provides guidance.The malfunction protocol that the design method of the present invention determines is applicable in model
It encloses and also provides guidance for design of nuclear power plant, and can be used for assessing the reasonability and completeness of existing design.
Beneficial effects of the present invention are embodied in：
(1) design method through the invention, it may be determined that the accident inventory that new nuclear power factory malfunction protocol should cover, i.e., it is bright
The really scope of application of newly-built malfunction protocol, which ensure that the completeness of malfunction protocol, and then further ensure new nuclear power factory
Safety；
(2) design method through the invention, it may be determined that the accident inventory that in-service nuclear power plant's malfunction protocol should cover can be used
In assessing in-service nuclear power plant's malfunction protocol completeness, the weakness and specific aim that can be used for instructing to find in-service nuclear power plant's malfunction protocol
It improves, and then can further improve the safety of in-service nuclear power plant；
(3) design method through the invention can determine that nuclear power plant system is designed by identified accident inventory analysis
Reasonability and completeness, to which sophisticated systems design further increases safety and the economy of nuclear power plant；
(4) design method through the invention, it may be determined that the malfunction protocol scope of application, and for operator rehearsal provide according to
According to, and then the possibility that human-equation error occurs in process accident for operator is reduced, improve the safety of nuclear power plant.
Description of the drawings
Fig. 1 is the flow chart of the design method of nuclear power plant's malfunction protocol scope of application of the illustrative present invention.
Specific implementation mode
The specific implementation mode of the present invention is further illustrated below in conjunction with attached drawing.
The flow of the design method of nuclear power plant's malfunction protocol scope of application of the illustrative present invention is as shown in Figure 1, include
Following steps.
(1) it is formed and originates accident inventory
1) it is determined in npp safety analysis and is examined based on the npp safety analytical conclusions and associated safety analysis report
The design basis accident inventory of worry.
2) the transient state inventory being considered as is determined based on nuclear power plant's transient analysis.
3) it is based on operating experience, assesses the event that other same type nuclear power plants occurred both at home and abroad, it is clear to comb the accident of determination
It is single.
4) domestic and international relevant laws and regulations standard is combined, chooses and is distinctly claimed the single thing considered in design of nuclear power plant in regulation
Therefore inventory.
5) in summary the determination of accident inventory finishing analysis originates accident inventory (list-IA).
(2) superposition accident library is formed
1) it is directed in each list-IA the accident that originates, carries out simulation and calculates analysis, determine that this originates the nuclear power of accident impact
Factory's key security functionality forms impacted security function inventory (list-SF).
2) influence and threat degree of each security function to unit nuclear safety in list-SF is combined to carry out priority arrangement.
| SF1 | SF2 | SF3 | SF4 | SF5 | …… | SFx |
3) it is directed to each security function in list-SF, is designed in conjunction with the power plant system, determines that alleviation originates accident impact safety
The corresponding system of function and equipment.Since nuclear power plant has fully considered single failure and depth defense in design, to a certain
Specific key security functionality, usually there are many alleviate means (SFM) for power plant design.In conjunction with related system and equipment positioning and can
It analyzes, is determined for the corresponding mitigation strategy sequence matrix of each security function in list-SF by property.
| SF1 | SF2 | SF3 | SF4 | SF5 | …… | SFx |
| SFM11 | SFM21 | SFM31 | SFM41 | SFM51 | …… | SFMx1 |
| SFM12 | SFM22 | SFM32 | SFM42 | SFM52 | …… | SFMx2 |
| SFM13 | SFM23 | SFM33 | SFM43 | SFM53 | …… | SFMx3 |
| …… | …… | …… | …… | …… | …… | …… |
| SFM1a | SFM1b | SFM3c | SFM4d | SFM5e | …… | SFMxy |
4) according to associated safety function SFx in the list-SF for respectively originating accident impact in list-IA, thing is being originated
Consider that different SFMxy, SFMxz ... failures occurs for superposition on the basis of therefore, to form superposition accident library list-MA.
(3) it forms covering accident and blocks probability
1) it is based on PSA to analyze, determines that originating contingency occurrence probability and key security functionality alleviates the mistake of system and equipment
Imitate probability inventory.
2) it is based on CDF general objectives in nuclear power plant PSA analyses to require, the superposition contingency occurrence probability that determination need to consider, i.e.,
Block probability.For the sequence less than the probability, it is believed that its possibility occurrence is too low, and CDF total to nuclear power plant contributes very little, can not
Give consideration.
(4) malfunction protocol and upstream document scope of application accident inventory are formed
1) it is based on contingency occurrence probability and system equipment failure probability inventory, determines each accident sequence in superposition accident library
Probability of happening.
2) by fixed TP, the superposition accident inventory being considered as in interception accidents happened regulation and upstream document, i.e. shape
At the scope of application (list-EA) of malfunction protocol.
The specific implementation content of the design method of nuclear power plant's malfunction protocol scope of application of the present invention of above-mentioned example is lifted
Under such as.
1) according to npp safety analysis, transient analysis, and the operational experience feedback of other nuclear power generating sets is combined, and
Domestic and international relevant laws and regulations standard, determination originate accident inventory.
2) analysis is calculated by simulating, determination respectively originates the corresponding security function of accident, and according to it to unit safety
It influences and threat degree carries out priority ranking.
The npp safety function of for the rupture of main feed water pipe road originates accident, influencing occurs by certain new nuclear power factory
Including primary Ioops temperature, containment integrity and primary Ioops pressure etc..The influence degree of wherein primary Ioops temperature is higher than peace
Full shell integrality.
3) it is based on unit design, determines the corresponding alleviation means of each security function, and determine according to system and equipment positioning
The alleviation sequence of security function forms alleviation means matrix.
By taking the alleviation sequence of certain new nuclear power factory steam generator water loading amount key security functionality as an example, restores and control is steamed
The alleviation means of vapour generator water loading amount include auxiliary feedwater system, start water supply system, main feed system, condensate system
Deng.In conjunction with related system Design Orientation and equipment dependability, the alleviation sequence of steam generator water loading amount key security functionality is
SFM1：Auxiliary feedwater system；SFM2：Start water supply system；SFM3：Main feed system；SFM4：Condensate system.
4) combine the accident that originates and alleviate means matrix and determines superposition accident library, and combine originate contingency occurrence probability and
The failure probability of alleviation means system and equipment determines superposition contingency occurrence probability.
Include such as main water supply to originating the superposition accident that accident is main feedwater piping cut in above-mentioned determining superposition accident library
Pipeline breaking is superimposed auxiliary feedwater forfeiture, main feed water pipe road ruptures superposition startup and is superimposed greatly to water depletion, the rupture of main feed water pipe road
Gas relief valve is unavailable, main feed water pipe road rupture superposition voltage-stablizer spray is unavailable, the rupture superposition emergency shut-down of main feed water pipe road
Failure, main feed water pipe road rupture superposition peace note unavailable, main feed water pipe road rupture superposition and lose cooling water etc..
5) power plant's CDF general objectives in PSA are based on, the superposition accident that determination need to consider blocks probability, and is blocked generally based on this
Rate determines the accident inventory that malfunction protocol need to cover, that is, determines the malfunction protocol scope of application.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.If in this way, belonging to the model of the claims in the present invention and its equivalent technology to these modifications and changes of the present invention
Within enclosing, then the present invention is also intended to include these modifications and variations.The above embodiment is illustrating to the present invention
Bright, the present invention can also be implemented with other ad hoc fashions or other particular forms, without departing from the gist of the invention or originally
Matter feature.Therefore, it is regarded as from the point of view of the embodiment of description is in terms of any illustrative and non-limiting.The model of the present invention
Enclosing should be illustrated by appended claims, and any variation equivalent with the intention and range of claim should also be included in the present invention
In the range of.
Claims (6)
1. a kind of design method of nuclear power plant's malfunction protocol scope of application, which is characterized in that the design method includes successively
Following steps：
(1) it is formed and originates accident inventory；
(2) superposition accident library is formed；
(3) it forms covering accident and blocks probability；
(4) malfunction protocol and upstream document scope of application accident inventory are formed.
2. design method according to claim 1, which is characterized in that originate accident inventory packet formed in step (1)
It includes：
What is considered in the npp safety analysis determined based on the npp safety analytical conclusions and associated safety analysis report is set
Count basis accident inventory；
The transient state inventory being considered as determined based on nuclear power plant's transient analysis；
Based on operating experience, the event that other same type nuclear power plants occurred both at home and abroad is assessed, through combing determining accident inventory；
It is clear it to be distinctly claimed the single accident considered in design of nuclear power plant in conjunction with domestic and international relevant laws and regulations standard, in selection regulation
It is single.
3. design method according to claim 1, it is characterised in that：In step (1), to originate accident clear by various types of
Determine that summarizes originates accident inventory list-IA after single collated analysis.
4. design method according to claim 1, which is characterized in that step (2) includes following sub-step：
1) it is directed to and each originates accident, carry out simulation and calculate analysis, determine that this originates nuclear power plant's key safety work(of accident impact
Can, it is aggregated to form impacted security function inventory list-SF；
2) influence and threat degree of each security function to unit nuclear safety in list-SF is combined to carry out priority arrangement；
3) it is directed to each security function in list-SF, is designed in conjunction with nuclear power plant system, determines that alleviation originates accident impact security function
Corresponding system and equipment, and the positioning and fail-safe analysis of related system and equipment are combined, determining be directed to originates accident inventory
In the corresponding mitigation strategy of each security function sequence matrix；
4) according to associated safety function SFx in the list-SF for respectively originating accident impact in accident inventory is originated, thing is being originated
Consider that different SFMxy, SFMxz ... failures occurs for superposition on the basis of therefore, to form superposition accident library list-MA.
5. design method according to claim 1, which is characterized in that step (3) includes following sub-step：
1) it is based on PSA to analyze, determines that the failure for originating contingency occurrence probability and key security functionality alleviation system and equipment is general
Rate inventory；
2) it is based on the requirement of CDF general objectives, the superposition contingency occurrence probability that determination need to consider in nuclear power plant PSA analyses, that is, is blocked general
Rate TP, for the sequence less than the probability, it is believed that its possibility occurrence is too low, and CDF total to nuclear power plant contributes very little, can not examine
Consider, and the sequence higher than the probability should be included in malfunction protocol coverage area.
6. design method according to claim 1, which is characterized in that step (4) includes following sub-step：
1) it is based on contingency occurrence probability and system equipment failure probability inventory, determines the generation of each accident sequence in superposition accident library
Probability；
2) by fixed TP, the superposition accident inventory being considered as in interception accidents happened regulation and upstream document forms accident
The scope of application list-EA of regulation.
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| CN109597393A (en) * | 2018-11-15 | 2019-04-09 | 中国核电工程有限公司 | The design implement method of key security functionality in a kind of nuclear power plant's accident treatment strategy |
| CN110188973A (en) * | 2019-03-26 | 2019-08-30 | 苏州热工研究院有限公司 | A kind of nuclear power station fire safety evaluating comprehensive estimation method |
| CN110009228A (en) * | 2019-04-04 | 2019-07-12 | 中国核动力研究设计院 | Probability theory is the same as the nuclear power plant's Protection of Diversity design method for determining that opinion combines |
| CN110009228B (en) * | 2019-04-04 | 2021-04-02 | 中国核动力研究设计院 | Design method of nuclear power plant diversity protection system combining probability theory and determinism |
| CN113972019A (en) * | 2020-07-23 | 2022-01-25 | 华龙国际核电技术有限公司 | Nuclear power plant accident handling strategy generation method and device and electronic equipment |
| CN113972019B (en) * | 2020-07-23 | 2024-04-16 | 华龙国际核电技术有限公司 | Nuclear power plant accident handling strategy generation method and device and electronic equipment |
| CN112598223A (en) * | 2020-12-03 | 2021-04-02 | 中广核工程有限公司 | Nuclear power state oriented law accident rule completeness inspection method and system, electronic equipment and storage medium |
| CN113887886A (en) * | 2021-09-14 | 2022-01-04 | 中国核电工程有限公司 | Method for identifying design expansion working condition list without melting in heap based on risk importance degree |
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Application publication date: 20181016 |