CN108091409B - A kind of comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence - Google Patents
A kind of comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence Download PDFInfo
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- CN108091409B CN108091409B CN201711219056.6A CN201711219056A CN108091409B CN 108091409 B CN108091409 B CN 108091409B CN 201711219056 A CN201711219056 A CN 201711219056A CN 108091409 B CN108091409 B CN 108091409B
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/04—Safety arrangements
- G21D3/06—Safety arrangements responsive to faults within the plant
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
Abstract
The present invention is suitable for the emergence technology field at million kilowatt nuclear power station, provide the comprehensive estimation method of a kind of nuclear emergency set state diagnosis and damage sequence, nuclear emergency unit is divided into N ring since the reactor core from inside to outside, the described method comprises the following steps: judge second ring whether cut, it is in this way then perform the next step rapid, otherwise reinforce monitoring；Judge whether the cut occurs in containment, then performs the next step in this way suddenly, otherwise judge that Fourth Ring to N ring has exception；Persistently judge whether the third ring has abnormal leakage, then directly warning Fourth Ring to N ring has exception in this way, and reinforces monitoring；Otherwise containment pressure parameter is paid close attention to, until pressure reaches preset value, containment leak rate is set, warns Fourth Ring to N ring to have exception from this moment on, while reinforcing monitoring.The present invention realizes polycyclic joint and derives, while realizing energy automatic error-correcting after a ring or polycyclic mistaken diagnosis, has greatly reinforced the analysis and early warning of nuclear accident consequence.
Description
Technical field
The invention belongs to the emergence technology field at million kilowatt nuclear power station, in particular to a kind of nuclear emergency set state is examined
The disconnected comprehensive estimation method with damage sequence.
Background technique
In the prior art, the condition diagnosing of PWR nuclear power plant unit and damage sequence comprehensive assessment only from respective level into
The assessment of row part, assessment result is more unilateral, there are certain limiting, can not effectively analyze nuclear accident consequence
And early warning, and then not can guarantee the safe and stable operation of PWR nuclear power plant unit.
Summary of the invention
The purpose of the present invention is to provide a kind of comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence, purports
In the condition diagnosing and damage sequence comprehensive assessment for solving PWR nuclear power plant unit in the prior art because only from respective level
It carries out the assessment of part and there is technical issues that.
The invention is realized in this way a kind of comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence, it will
Nuclear emergency unit is divided into N ring since the reactor core from inside to outside, wherein and N is positive integer and N is greater than 3, and the first ring is reactor core, second
Ring is primary Ioops pressure boundary, and third ring is containment；The comprehensive assessment of nuclear emergency the set state diagnosis and damage sequence
Method the following steps are included:
Step A, judge second ring whether cut, then perform the next step in this way rapid, otherwise reinforce monitoring；
Step B, judge whether the cut occurs in containment, then perform the next step in this way suddenly, otherwise judge the 4th
Ring to N ring has exception；
Step C, persistently judge whether the third ring has abnormal leakage, then directly warning Fourth Ring to N ring has in this way
It is abnormal, and reinforce monitoring；Otherwise containment pressure parameter is paid close attention to, until pressure reaches preset value, while containment leak is set
Rate warns Fourth Ring to N ring to have exception from this moment on, while reinforcing monitoring.
Further, in the step C, persistently judge that first ring is while the lasting monitoring third ring
It is no to have exception.
Further, if reaching reactor core breakage rank according to core exit temperature and the judgement of containment dosage rate measured value
Section, then no matter whether the third ring is abnormal, and directly warning Fourth Ring to N ring, which is strengthened, monitors, monitored results and described the
Tricyclic linkage judgement；If core exit temperature and the judgement of containment dosage rate measured value reach the core meltdown stage, directly set
Setting containment pressure is 5bar, and directly early warning Fourth Ring is or at once abnormal to N ring.
Further, if it is comprehensive pre- according to break size, primary Ioops injection, dehydrating speed and safety devices operating condition
It surveys first ring and reaches dew naked stage, then from directly predicting that Fourth Ring is normal to N ring to from exposed time point this moment, but need
It need to strengthen monitoring, monitored results and third ring linkage judge；From exposed time point to future, directly Fourth Ring is predicted extremely
N ring is abnormal.
Further, the linkage judgment rule are as follows: if the third ring leaks extremely, Fourth Ring to N ring can
It can be abnormal；If Fourth Ring to N ring surveys exception, the third ring must be leaked.
Further, the linkage judgment rule are as follows: if the third ring leaks extremely, Fourth Ring to N ring can
It can be abnormal；If Fourth Ring to N ring surveys exception, the third ring must be leaked.
Further, using the degree of impairment of the first ring described in rational judgment, judgment method are as follows: if primary Ioops iodine 131
Equivalent activity value is less than 4.4GBq/t, then judges clean primary Ioops；If primary Ioops iodine 131 equivalent activity value is equal to 4.4GBq/
T then judges ten fuel rod breakages；If primary Ioops iodine 131 equivalent activity value is equal to 37GBq/t, 100 fuel are judged
Stick is damaged.
Further, the method in reactor core damaged stage is judged according to core exit temperature are as follows: if core exit temperature is small
In 700 DEG C, then judge that no reactor core is damaged；If core exit temperature is greater than 700 DEG C and less than 1100 DEG C, judge that involucrum is broken
Damage；If core exit temperature is greater than 1100 DEG C and less than 1200 DEG C, core meltdown is judged.
Further, the method in reactor core damaged stage is judged according to containment dosage rate measured value are as follows: if full shell dosage
Rate is less than 0.02Gy/h, then judges that no reactor core is damaged；If full shell dosage rate is greater than 0.02Gy/h in 1h and is less than 500Gy/
H then judges clad failure；If full shell dosage rate is greater than 0.02Gy/h in 1h to 6h and is less than 100Gy/h, involucrum is judged
It is damaged；If full shell dosage rate is greater than 0.02Gy/h in 6h to 5d and is less than 50Gy/h, clad failure is judged；If full shell
Dosage rate is greater than 0.02Gy/h in 5d to one month and is less than 10Gy/h, then judges clad failure；If full shell dosage rate exists
It is greater than 0.02Gy/h after one month and is less than 5Gy/h, then judges clad failure；If full shell dosage rate is greater than in 1h
500Gy/h then judges core meltdown；If full shell dosage rate is greater than 100Gy/h in 1h to 6h, core meltdown is judged；Such as
The full shell dosage rate of fruit is greater than 50Gy/h in 6h to 5d, then judges core meltdown；If full shell dosage rate is in 5d to one month
Greater than 10Gy/h, then core meltdown is judged；If full shell dosage rate is greater than 5Gy/h after one month, core meltdown is judged.
Further, the N is equal to 7.
Further, Fourth Ring is 500 meters of reactor building periphery, by way of manual measurement, in the reactor
500 meters of workshop periphery monitors its radioactivity, derives the reliability of the third ring and the journey of radioactive transfer with measurement data
Degree.
Further, five rings is 500 meters to 5 kilometers of the reactor building periphery, by using fixed r probe, thing
Therefore consequences analysis system supplements the deficiency of the Fourth Ring personal monitoring with the form for monitoring vehicle patrol on-line.
Further, the 6th ring is 5 kilometers to 10 kilometers of the reactor building periphery, by the way of fixed r probe
And the accident consequence analysis network analysis radiates diffusion process, is popped one's head in by the fixed r of the five rings and the 6th ring
It counter can also push away the radioactive transfer degree at the third ring and Fourth Ring.
Further, the 7th ring is except 10 kilometers of the reactor building periphery, using the accident consequence analysis system
System analyzing radiation diffusion process.
The comprehensive estimation method for implementing a kind of nuclear emergency set state diagnosis and damage sequence of the invention, has with following
Beneficial effect: it by being divided into N ring since the reactor core for nuclear emergency unit from inside to outside, wherein and N is positive integer and N is greater than 3, the
One ring is reactor core, and the second ring is primary Ioops pressure boundary, and third ring is containment；Following steps are used simultaneously: judging described the
Two rings whether cut, then perform the next step in this way rapid, otherwise reinforce monitoring；Judge whether the cut occurs in containment,
It is in this way then perform the next step rapid, otherwise judge that Fourth Ring to N ring has exception；Persistently judge whether the third ring has abnormal let out
Leakage, then directly warning Fourth Ring to N ring has exception in this way, and reinforces monitoring；Otherwise containment pressure parameter is paid close attention to, until pressure
Power reaches preset value, while containment leak rate is arranged, and warns Fourth Ring to N ring to have exception from this moment on, reinforces simultaneously
Monitoring has greatly reinforced core thing it is thus achieved that polycyclic joint derives, while realizing energy automatic error-correcting after a ring or polycyclic mistaken diagnosis
Therefore the analysis of consequence and early warning.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the comprehensive estimation method process of nuclear emergency set state diagnosis and damage sequence provided in an embodiment of the present invention
Figure.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
It should be noted that when component is referred to as " being fixed on " or " being set to " another component, it can directly or
It connects on another component.When a component referred to as " is connected to " another component, it, which can be, directly or indirectly connects
It is connected on another component.The orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right" is based on attached drawing institute
The orientation or positional relationship shown is merely for convenience of describing, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore should not be understood as the limitation to this patent.Term " first ", " the
Two " are used merely to facilitate description purpose, are not understood to indicate or imply relative importance or implicitly indicate technical characteristic
Quantity.The meaning of " plurality " is two or more, unless otherwise specifically defined.
As shown in Figure 1, the comprehensive assessment side of nuclear emergency set state diagnosis and damage sequence provided in an embodiment of the present invention
Nuclear emergency unit is divided into N ring since the reactor core by method from inside to outside, wherein N is positive integer and N is greater than 3, and the first ring is heap
Core, the second ring are primary Ioops pressure boundary, and third ring is containment.The nuclear emergency set state of the embodiment of the present invention diagnoses and thing
Therefore the comprehensive estimation method of consequence the following steps are included:
S1, judge the second ring whether cut, then perform the next step in this way rapid, otherwise reinforce monitoring；
S2, judge whether cut occurs in containment, then perform the next step in this way suddenly, otherwise judge Fourth Ring to N
Ring has exception；
S3, persistently judge whether third ring has abnormal leakage, then directly warning Fourth Ring to N ring has exception in this way, and
Reinforce monitoring；Otherwise containment pressure parameter is paid close attention to, until pressure reaches preset value, while containment leak rate is set, from this
Start at quarter that Fourth Ring to N ring is warned to have exception, while reinforcing monitoring.
The embodiment of the present invention analyzes this all need of N ring by the way that nuclear emergency unit is divided into N ring since the reactor core from inside to outside
The attribute and data wanted are divided into the data that can be acquired with the data of automatic collection and manually, by the attribute of this N ring and data into
Row joint assessment realizes that polycyclic joint derives, while realizing energy automatic error-correcting after a ring or polycyclic mistaken diagnosis, has greatly reinforced core thing
Therefore the analysis of consequence and early warning.
Preferably, in one embodiment of the invention, N is equal to 7, i.e., by nuclear emergency unit since the reactor core from inside to outside
It is divided into 7 rings.Specifically, in the present embodiment, the first ring, the second ring and third ring are in the development process of initial event, usually
Triggering cut by the second ring, break location can be in containment, at the top of hot pipe section, cold tube section and voltage-stablizer；Cut
Position may be outside containment, such as steam generator.Wherein, 10 kinds of common initial events of presurized water reactor include: various dehydrations
Accident, the anticipated transient for failing emergency shut-down, reactor coolant loop transient state, secondary coolant circuit system transient state, secondary coolant circuit system pipe
Road rupture, steam generator tube rupture lose power source (power supply, compressed air source), lose whole hot traps, all lose
Steam generator water supply and the whole AC power sources of forfeiture.
Further, in the present embodiment, first determine whether the second ring whether cut, if it is judge whether cut occurs
In containment, otherwise reinforce monitoring.
Further, if the second ring cut occurs in containment, whole process shows radioactive transfer with animation form
And prealarming process, while persistently judging whether third ring has abnormal leakage.If third ring has abnormal leak and directly to atmosphere
Leakage, then directly warning Fourth Ring, five rings, the 6th ring and the 7th ring have exception, while reinforcing monitoring；If third ring has different
It often leaks and is leaked to auxiliary plant, then monitoring is strengthened in early warning, and directly warns auxiliary plant, Fourth Ring, five rings, the 6th ring
There is exception with the 7th ring.Wherein, the feature of third circumferential direction auxiliary plant leakage is the second ring cut, and containment pressure is not up to
5bar.If the leakage without exception of third ring, pays close attention to containment pressure parameter, until pressure reaches 5bar, setting containment is let out
Leak rate is 0.3%, and Fourth Ring, five rings, the 6th ring and the 7th ring is warned to have exception from this moment on, while reinforcing monitoring.
In addition, persistently judging whether the first ring has exception while lasting monitoring third ring.If according to core exit
Temperature and the judgement of containment dosage rate measured value reach the reactor core damaged stage, then no matter whether third ring is abnormal, directly warning the
Fourth Ring, five rings, the 6th ring and the 7th ring strengthen monitoring, and monitored results and the linkage of third ring judge.Link judgment rule are as follows:
If third ring leaks extremely, Fourth Ring, five rings, the 6th ring and the 7th ring may be abnormal；If Fourth Ring, five rings,
6th ring and the actual measurement of the 7th ring are abnormal, then third ring must leak.If core exit temperature and containment dosage rate measured value are sentenced
Disconnected to reach the core meltdown stage, then directly setting containment pressure is 5bar, and directly early warning Fourth Ring, five rings, the 6th ring
It is or at once abnormal with the 7th ring.
If according to integrated forecastings first such as break size, primary Ioops injection, dehydrating speed and safety devices operating conditions
Ring reaches dew naked stage, then from directly predicting Fourth Ring, five rings, the 6th ring and the 7th ring just to from exposed time point this moment
Often, but need to strengthen monitoring, monitored results and the linkage of third ring judge.Link judgment rule are as follows: if third ring is let out extremely
Leakage, then Fourth Ring, five rings, the 6th ring and the 7th ring may be abnormal；If Fourth Ring, five rings, the 6th ring and the 7th ring are real
Exception is surveyed, then third ring must leak.From exposed time point to future, Fourth Ring, five rings, the 6th ring and the 7th ring are directly predicted
It is abnormal.
Further, if cut occurs outside containment, whole process shows that radioactivity is moved with animation form in upper figure
Shifting and prealarming process.When the auxiliary plant outside containment occurs for cut, direct animation form is shown in auxiliary plant region
Monitoring is strengthened in radioactivity disperse and early warning, while directly auxiliary plant, Fourth Ring, five rings, the 6th ring and the 7th ring being warned to have
It is abnormal.If cut occurs in steam generator, direct animated show secondary circuit radioactivity disperse, and directly prison is strengthened in warning
Control.If steam generator cut and superposition steam line break, direct early warning Fourth Ring, five rings, the 6th ring and the 7th
Ring is abnormal.
Further, in the present embodiment, using primary Ioops iodine 131 equivalent activity, which is given by daily chemical sampling
Out, the daily sampled data is utilized in nuclear accident, for the degree of impairment of current first ring of rational judgment, judgment method
Are as follows: if primary Ioops iodine 131 equivalent activity value is less than 4.4GBq/t, judges clean primary Ioops；If primary Ioops iodine 131 equivalent
Activity value is equal to 4.4GBq/t, then judges ten fuel rod breakages；If primary Ioops iodine 131 equivalent activity value is equal to 37GBq/t,
Then judge 100 fuel rod breakages.
Further, in another embodiment of the present invention, when the alarm of equipment level-one and secondary alarm and reactor core temperature
Degree can be qualitatively judged less than 650 degree, and fuel begins with breakage, and further rational judgment passes through in the case of chemical sampling accident
Primary Ioops iodine 131 equivalent activity and according to above-described embodiment qualitatively judge degree of injury.
Further, in another embodiment of the present invention, reactor core damaged stage, tool are judged according to core exit temperature
Body method are as follows: if core exit temperature less than 700 DEG C, judges that no reactor core is damaged；If core exit temperature is greater than 700 DEG C
And less than 1100 DEG C, then clad failure is judged；If core exit temperature is greater than 1100 DEG C and less than 1200 DEG C, reactor core is judged
Fusing.
Further, in another embodiment of the present invention, reactor core breakage is judged according to containment dosage rate measured value
Stage, method particularly includes: if full shell dosage rate is less than 0.02Gy/h, judge that no reactor core is damaged；If full shell dosage rate exists
It is greater than 0.02Gy/h in 1h and is less than 500Gy/h, then judges clad failure；If full shell dosage rate is greater than in 1h to 6h
0.02Gy/h and be less than 100Gy/h, then judge clad failure；If full shell dosage rate is greater than 0.02Gy/h and small in 6h to 5d
In 50Gy/h, then clad failure is judged；If full shell dosage rate is greater than 0.02Gy/h in 5d to one month and is less than 10Gy/h,
Then judge clad failure；If full shell dosage rate is greater than 0.02Gy/h after one month and is less than 5Gy/h, judge that involucrum is broken
Damage；If full shell dosage rate is greater than 500Gy/h in 1h, core meltdown is judged；If full shell dosage rate is big in 1h to 6h
In 100Gy/h, then core meltdown is judged；If full shell dosage rate is greater than 50Gy/h in 6h to 5d, core meltdown is judged；Such as
The full shell dosage rate of fruit is greater than 10Gy/h in 5d to one month, then judges core meltdown；If full shell dosage rate one month it
It is greater than 5Gy/h afterwards, then judges core meltdown.
Further, judge method of the cut in containment are as follows: reactor coolant loop pressure reduction；Underheat degree subtracts
It is small；Voltage-stablizer water level decreasing；Pressure vessel water level may decline；Pressure and temperature increases in reactor building；Reactor building
Then increasing occurs in water level in melt pit；Reactor Spent Fuel Pool is cooling and handles water level reduction in water tank；In fuel degradation feelings
Dosage rate increases in reactor building under condition.
Further, judge method of the cut in voltage-stablizer discharge line are as follows: the temperature of voltage-stablizer discharge line upstream
Rise rapidly or be equal to the temperature of voltage-stablizer (liquid phase or vapour phase).Judge method of the cut on voltage-stablizer are as follows: each in voltage-stablizer
The probe of measurement water level may cause water level measurements to occur relatively large deviation between each other because of the interference of vapor.
Further, judge method of the cut outside containment are as follows: underheat degree reduces；Voltage-stablizer water level decreasing；Pressure is held
Device water level may decline；The ginseng of parameter (pressure, temperature, dosage rate and melt pit water level) or secondary coolant circuit system in reactor building
Number does not change；The increase of the melt pit water level of possible impacted position (such as fuel plant or nuclear auxiliary building) and the increasing of dosage rate
Add, it can be identified that the rupture outside reactor building.
Further, judge method of the cut on steam generator heat-transfer pipe are as follows: on steam generator steam pipe line
Activity increases；Activity before reactor building isolation stage 2 in steam generator blowdown system increases；Condenser vacuum system
Activity increases.
It further, in one embodiment of the invention, is natural leak if containment is complete.If
Leak path is directly leaked to environment from reactor building, then not collect leakage, such as reactor building penetration piece (penetration piece
Compartment) isolated failure；Or cause being switched to the cooling of recirculation mode reactor Spent Fuel Pool and handling isolated part failure
Radioactive substance is discharged by water tank exhaust pipe；Or the steam generator valve event in steam generator tube rupture
Barrier or possible steam line break.If it is factory in ventilation and filtration system treated reactor building and around reactor
Leakage between room, then to collect leakage, such as one penetration piece isolated failure of reactor building；Or it is connected with primary Ioops system
A circuit on there is cut.
Further, the assessment of reactor building leakproofness and determining for leakage paths are established: reactor building isolation
The 1st stage of system and the 2nd stage isolation signals reactor building penetration piece are isolated the detailed analysis of situation；Consider ventilation blower fortune
To the analysis of the activity measurement value in relation to system under row operating condition；Systematicness monitoring to " sensitive penetration piece "；It is radiated using plant area
Property monitoring system and environment measurement obtain the monitoring data that measured value and related equipment provide.
Further, in one embodiment of the invention, right using online probe and thermal-hydraulic parameter judgment method
The degree and radioactive transfer mistake that first ring, the second ring and third ring use dynamic animation effect real-time exhibition nuclear accident to occur
Journey.
Wherein, Fourth Ring is 500 meters of reactor building periphery, by way of manual measurement, on reactor building periphery
500 monitor its radioactivity, derive the reliability of third ring and the degree of radioactive transfer with measurement data.Five rings is reaction
500 meters to 5 kilometers of heap workshop periphery, by using fixed r probe, accident consequence analysis system and on-line monitoring vehicle patrol
Form supplements the deficiency of Fourth Ring personal monitoring.6th ring is 5 kilometers to 10 kilometers of reactor building periphery, using fixed r
The mode of probe and accident consequence analysis network analysis radiate diffusion process, are popped one's head in by the fixation r of five rings and the 6th ring
It counter can push away the radioactive transfer degree at third ring and Fourth Ring.7th ring is to use except 10 kilometers of reactor building periphery
Accident consequence analysis network analysis radiates diffusion process, belongs to pure prediction content.
The embodiment of the present invention passes through the method that seven rings are verified mutually, can more accurately judge the shape of the preceding tricyclic of nuclear accident
State and radioactive transfer process.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (12)
1. a kind of comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence, which is characterized in that by nuclear emergency unit
It is divided into N ring from inside to outside since the reactor core, wherein N is positive integer and N is greater than 3, and the first ring is reactor core, and the second ring is primary Ioops
Pressure boundary, third ring are containment；The comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence include with
Lower step:
Step A, judge second ring whether cut, then perform the next step in this way rapid, otherwise reinforce monitoring；
Step B, judge whether the cut occurs in containment, then perform the next step in this way suddenly, otherwise judge Fourth Ring extremely
N ring has exception；
Step C, persistently judge whether the third ring has abnormal leakage, then directly warning Fourth Ring to N ring has exception in this way,
And reinforce monitoring；Otherwise containment pressure parameter is paid close attention to, until pressure reaches preset value, while containment leak rate is set, from
Start that Fourth Ring to N ring is warned to have exception this moment, while reinforcing monitoring, persistently sentences while the lasting monitoring third ring
Whether first ring that breaks has exception；
If according to the first ring described in break size, primary Ioops injection, dehydrating speed and safety devices operating condition integrated forecasting
Reach dew naked stage, then from directly predicting that Fourth Ring is normal to N ring to from exposed time point this moment, but need to strengthen monitoring,
Its monitored results and third ring linkage judge；From exposed time point to future, directly prediction Fourth Ring is abnormal to N ring.
2. the comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence as described in claim 1, which is characterized in that
If reaching the reactor core damaged stage according to core exit temperature and the judgement of containment dosage rate measured value, no matter the third ring
Whether abnormal, directly warning Fourth Ring to N ring, which is strengthened, monitors, and monitored results and third ring linkage judge；If heap
Core outlet temperature and the judgement of containment dosage rate measured value reach the core meltdown stage, and directly setting containment pressure is 5bar,
And directly early warning Fourth Ring is or at once abnormal to N ring.
3. the comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence as claimed in claim 2, which is characterized in that
The linkage judgment rule are as follows: if the third ring leaks extremely, Fourth Ring to N ring may be abnormal；If Fourth Ring
Exception is surveyed to N ring, then the third ring must leak.
4. the comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence as described in claim 1, which is characterized in that
The linkage judgment rule are as follows: if the third ring leaks extremely, Fourth Ring to N ring may be abnormal；If Fourth Ring
Exception is surveyed to N ring, then the third ring must leak.
5. the comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence as claimed in claim 2, which is characterized in that
Using the degree of impairment of the first ring described in rational judgment, judgment method are as follows: if primary Ioops iodine 131 equivalent activity value is less than
4.4GBq/t then judges clean primary Ioops；If primary Ioops iodine 131 equivalent activity value is equal to 4.4GBq/t, ten combustions are judged
Charge bar is damaged；If primary Ioops iodine 131 equivalent activity value is equal to 37GBq/t, 100 fuel rod breakages are judged.
6. the comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence as claimed in claim 2, which is characterized in that
The method in reactor core damaged stage is judged according to core exit temperature are as follows: if core exit temperature judges no heap less than 700 DEG C
Core is damaged；If core exit temperature is greater than 700 DEG C and less than 1100 DEG C, clad failure is judged；If core exit temperature
Greater than 1100 DEG C and less than 1200 DEG C, then core meltdown is judged.
7. the comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence as claimed in claim 2, which is characterized in that
The method in reactor core damaged stage is judged according to containment dosage rate measured value are as follows: if full shell dosage rate is less than 0.02Gy/h,
Judge that no reactor core is damaged；If full shell dosage rate is greater than 0.02Gy/h in 1h and is less than 500Gy/h, clad failure is judged；
If full shell dosage rate is greater than 0.02Gy/h in 1h to 6h and is less than 100Gy/h, clad failure is judged；If full shell dosage
Rate is greater than 0.02Gy/h in 6h to 5d and is less than 50Gy/h, then judges clad failure；If full shell dosage rate is at 5d to one
It is greater than 0.02Gy/h in month and is less than 10Gy/h, then judges clad failure；If full shell dosage rate is greater than after one month
0.02Gy/h and be less than 5Gy/h, then judge clad failure；If full shell dosage rate is greater than 500Gy/h in 1h, reactor core is judged
Fusing；If full shell dosage rate is greater than 100Gy/h in 1h to 6h, core meltdown is judged；If full shell dosage rate 6h extremely
It is greater than 50Gy/h in 5d, then judges core meltdown；If full shell dosage rate is greater than 10Gy/h in 5d to one month, heap is judged
Core fusing；If full shell dosage rate is greater than 5Gy/h after one month, core meltdown is judged.
8. the comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence as described in any one of claim 1 to 7,
It is characterized in that, the N is equal to 7.
9. the comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence as claimed in claim 8, which is characterized in that
Fourth Ring is 500 meters of reactor building periphery, by way of manual measurement, in the monitoring of 500 meters of the reactor building periphery
Its radioactivity derives the reliability of the third ring and the degree of radioactive transfer with measurement data.
10. the comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence as claimed in claim 9, feature exist
In five rings is 500 meters to 5 kilometers of the reactor building periphery, by using fixed r probe, accident consequence analysis system
The deficiency of the Fourth Ring personal monitoring is supplemented with the form of on-line monitoring vehicle patrol.
11. the comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence as claimed in claim 10, feature exist
In, the 6th ring be 5 kilometers to 10 kilometers of the reactor building periphery, by the way of fixed r probe and the damage sequence
Analysis system analyzing radiation diffusion process counter can also be pushed away described by the fixed r probe at the five rings and the 6th ring
The radioactive transfer degree at third ring and Fourth Ring.
12. the comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence as claimed in claim 11, feature exist
In the 7th ring is to be radiated and spread using the accident consequence analysis network analysis except 10 kilometers of the reactor building periphery
Process.
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| CN109215286B (en) * | 2018-08-27 | 2020-08-28 | 中广核工程有限公司 | Fire monitoring device and fire monitoring circuit of nuclear power station |
| CN110689973B (en) * | 2019-09-18 | 2023-04-28 | 上海电力大学 | Nuclear power station primary loop depressurization control method under heat transfer pipe rupture accident |
| CN110991006B (en) * | 2019-11-06 | 2024-01-23 | 中国辐射防护研究院 | Pressurized water reactor large LOCA accident reactor core damage evaluation method based on exposure time |
| CN112652415B (en) * | 2020-12-01 | 2022-10-21 | 中国辐射防护研究院 | Post-processing plant emergency state grading determination method based on characteristic parameter analysis |
| CN112414472B (en) * | 2020-12-03 | 2022-09-13 | 深圳中广核工程设计有限公司 | Safety barrier integrity judging method, device, control equipment and storage medium |
| CN112687410A (en) * | 2021-01-26 | 2021-04-20 | 三门核电有限公司 | Diagnosis method for large-range damage accident of passive pressurized water reactor nuclear power plant |
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