CN108091409A - A kind of nuclear emergency set state diagnosis and the comprehensive estimation method of damage sequence - Google Patents
A kind of nuclear emergency set state diagnosis and the comprehensive estimation method of damage sequence Download PDFInfo
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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
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Abstract
The present invention is suitable for the emergence technology field at million kilowatt nuclear power station, provides a kind of diagnosis of nuclear emergency set state and the comprehensive estimation method of damage sequence, and nuclear emergency unit is divided into N rings from inside to outside since the reactor core, the described method comprises the following steps：Judge second ring whether cut, then perform next step in this way, otherwise strengthen monitoring；Judge whether the cut is happened in containment, then perform next step in this way, otherwise judge that Fourth Ring to N rings have exception；Persistently judge whether the tricyclic has abnormal leakage, then directly warning Fourth Ring to N rings have exception in this way, and strengthen monitoring；Otherwise containment pressure parameter is paid close attention to, until pressure reaches preset value, containment leak rate is set, Fourth Ring to N rings is warned to have exception from this moment on, while strengthen monitoring.The present invention realizes polycyclic joint and derives, while realizes 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, more particularly to a kind of nuclear emergency set state is examined
The disconnected comprehensive estimation method with damage sequence.
Background technology
In the prior art, the condition diagnosing of PWR nuclear power plant unit and damage sequence comprehensive assessment only from respective level into
The local assessment of row, assessment result is more unilateral, and there are certain limiting, effectively nuclear accident consequence can not be analyzed
And early warning, and then can not ensure the safe and stable operation of PWR nuclear power plant unit.
The content of the invention
It is an object of the invention to provide a kind of diagnosis of nuclear emergency set state and the comprehensive estimation method of damage sequence, purport
The condition diagnosing of PWR nuclear power plant unit of the prior art and damage sequence comprehensive assessment are being solved because only from respective level
It carries out local assessment and there is technical issues that.
The present invention is achieved in that a kind of nuclear emergency set state diagnosis and the comprehensive estimation method of damage sequence, will
Nuclear emergency unit is divided into N rings since the reactor core from inside to outside, wherein, N is more than 3 for positive integer and N, and the first ring is reactor core, and second
Ring is primary Ioops pressure boundary, and tricyclic is containment；The nuclear emergency set state diagnosis and the comprehensive assessment of damage sequence
Method comprises the following steps：
Step A, judge second ring whether cut, then perform next step in this way, otherwise strengthen monitoring；
Step B, judge whether the cut is happened in containment, then perform next step in this way, otherwise judge the 4th
Ring to N rings have exception；
Step C, persistently judge whether the tricyclic has abnormal leakage, then directly warning Fourth Ring to N rings have in this way
It is abnormal, and strengthen 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 rings to have exception from this moment on, while strengthens monitoring.
Further, in the step C, persistently judge that first ring is while the lasting monitoring tricyclic
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 tricyclic is abnormal, and Fourth Ring is directly warned to strengthen to N rings and is monitored, monitored results and described the
Tricyclic linkage judges；If core exit temperature and the judgement of containment dosage rate measured value reach the core meltdown stage, directly set
Containment pressure is put as 5bar, and directly early warning Fourth Ring is or at once abnormal to N rings.
Further, if integrated according to break size, primary Ioops injection, dehydrating speed and safety devices operating condition pre-
It surveys first ring and reaches dew naked stage, then from this moment to directly predicting that Fourth Ring is normal to N rings from exposed time point, but need
Monitoring is need to strengthen, monitored results judge with tricyclic linkage；From exposed time point to future, directly Fourth Ring is predicted extremely
N rings are abnormal.
Further, the linkage judgment rule is：If the tricyclic leaks extremely, Fourth Ring to N rings can
It can be abnormal；If Fourth Ring to N rings survey exception, the tricyclic must leak.
Further, the linkage judgment rule is：If the tricyclic leaks extremely, Fourth Ring to N rings can
It can be abnormal；If Fourth Ring to N rings survey exception, the tricyclic must leak.
Further, using the degree of impairment of the first ring described in rational judgment, determination methods are：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 for judging the reactor core damaged stage according to core exit temperature is：If core exit temperature is small
In 700 DEG C, then judge that no reactor core is damaged；If core exit temperature is more than 700 DEG C and less than 1100 DEG C, judge that involucrum is broken
Damage；If core exit temperature is more than 1100 DEG C and less than 1200 DEG C, core meltdown is judged.
Further, the method for judging the reactor core damaged stage according to containment dosage rate measured value is：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 more than 0.02Gy/h in 1h and less than 500Gy/
H then judges clad failure；If full shell dosage rate is more than 0.02Gy/h in 1h to 6h and less than 100Gy/h, involucrum is judged
It is damaged；If full shell dosage rate is more than 0.02Gy/h in 6h to 5d and less than 50Gy/h, clad failure is judged；If full shell
Dosage rate was more than 0.02Gy/h in 5d to one month and less than 10Gy/h, then judged clad failure；If full shell dosage rate exists
It is more than 0.02Gy/h after one month and less than 5Gy/h, then judges clad failure；If full shell dosage rate is more than in 1h
500Gy/h then judges core meltdown；If full shell dosage rate is more than 100Gy/h in 1h to 6h, core meltdown is judged；Such as
The full shell dosage rate of fruit is more than 50Gy/h in 6h to 5d, then judges core meltdown；If full shell dosage rate is in 5d to one month
More than 10Gy/h, then core meltdown is judged；If full shell dosage rate is more 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 the form of manual measurement, in the reactor
500 meters of workshop periphery monitors its radioactivity, and the journey of the reliability of the tricyclic and radioactive transfer is derived with measurement data
Degree.
Further, five rings is 500 meters to 5 kilometers of the reactor building periphery, is popped one's head in by using fixed r, thing
Therefore consequences analysis system and the form of on-line monitoring vehicle patrol supplement the deficiency of the Fourth Ring personal monitoring.
Further, the 6th ring is 5 kilometers to 10 kilometers of the reactor building periphery, by the way of fixed r probes
And the accident consequence analysis network analysis radiation diffusion process, it 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 tricyclic and the radioactive transfer degree at Fourth Ring.
Further, the 7th ring is outside 10 kilometers of the reactor building periphery, using the accident consequence analysis system
System analyzing radiation diffusion process.
Implement a kind of nuclear emergency set state diagnosis of the present invention and the comprehensive estimation method of damage sequence, have with following
Beneficial effect：Its by the way that nuclear emergency unit is divided into N rings from inside to outside since the reactor core, wherein, N is more than 3 for positive integer and N, the
One ring is reactor core, and the second ring is primary Ioops pressure boundary, and tricyclic is containment；Simultaneously using following steps：Judge described
Two rings whether cut, then perform next step in this way, otherwise strengthen monitoring；Judge whether the cut is happened in containment,
Next step is then performed in this way, otherwise judges that Fourth Ring to N rings have exception；Persistently judge whether the tricyclic has abnormal let out
Leakage, then directly warning Fourth Ring to N rings have exception in this way, and strengthen monitoring；Otherwise containment pressure parameter is paid close attention to, until pressure
Power reaches preset value, while sets containment leak rate, and Fourth Ring to N rings is warned to have exception from this moment on, are strengthened simultaneously
Monitoring it is thus achieved that polycyclic joint derives, while realizes energy automatic error-correcting after a ring or polycyclic mistaken diagnosis, has greatly reinforced core thing
Therefore the analysis of consequence and early warning.
Description of the drawings
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, the accompanying drawings in the following description is only some embodiments of the present 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 nuclear emergency set state diagnosis provided in an embodiment of the present invention and the comprehensive estimation method flow of damage sequence
Figure.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only 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 arranged at " another component, it can directly or
It is connected on another component.When a component is referred to as " being connected to " another component, it can directly or indirectly be connected
It is connected on another component.The orientation or position relationship of the instructions such as term " on ", " under ", "left", "right" is based on attached drawing institutes
The orientation or position relationship shown is for only for ease of description rather than instruction or implies that signified device or element must have
Specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to this patent.Term " first ", " the
Two " are used merely to facilitate description purpose, and it is not intended that instruction or implying relative importance or implicit indicating technical characteristic
Quantity." multiple " are meant that two or more, unless otherwise specifically defined.
As shown in Figure 1, nuclear emergency set state diagnosis provided in an embodiment of the present invention and the comprehensive assessment side of damage sequence
Nuclear emergency unit is divided into N rings since the reactor core by method from inside to outside, wherein, N is more than 3 for positive integer and N, and the first ring is heap
Core, the second ring are primary Ioops pressure boundary, and tricyclic is containment.The nuclear emergency set state diagnosis of the embodiment of the present invention and thing
Therefore the comprehensive estimation method of consequence comprises the following steps：
S1, judge the second ring whether cut, then perform next step in this way, otherwise strengthen monitoring；
S2, judge whether cut is happened in containment, then perform next step in this way, otherwise judge Fourth Ring to N
Ring has exception；
S3, persistently judge whether tricyclic has abnormal leakage, then directly warning Fourth Ring to N rings have exception in this way, and
Strengthen 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 rings is warned to have exception, while strengthen monitoring.
The embodiment of the present invention analyzes this all need of N rings by the way that nuclear emergency unit is divided into N rings since the reactor core from inside to outside
The attribute and data wanted, be divided into can with the data of automatic collection and the data manually gathered, by the attribute of this N ring and data into
Row joint assessment realizes that polycyclic joint derives, while realizes 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 tricyclic are in the evolution of initial event, usually
Triggering cut by the second ring, break location can be in containment, at the top of heat pipe section, cold leg and voltage-stablizer；Cut
Outside position or 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, total loss
Steam generator feeds water and the whole AC powers 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 strengthen monitoring.
Further, if the second ring cut is happened in containment, whole process shows radioactive transfer with animation form
And prealarming process, while persistently judge whether tricyclic has abnormal leakage.If tricyclic has abnormal leak and directly to air
Leakage, then directly warning Fourth Ring, five rings, the 6th ring and the 7th ring have exception, while strengthen monitoring；If tricyclic 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 the 3rd circumferential auxiliary plant leakage is the second ring cut, and containment pressure is not up to
5bar.If containment pressure parameter is paid close attention in tricyclic leakage without exception, until pressure reaches 5bar, containment is set to 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 strengthens monitoring.
In addition, persistently judge whether the first ring has exception while lasting monitoring tricyclic.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 tricyclic is abnormal, directly warn the
Fourth Ring, five rings, the 6th ring and the 7th ring strengthen monitoring, and monitored results judge with tricyclic linkage.Linkage judgment rule be：
If tricyclic 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 tricyclic must leak.If core exit temperature and containment dosage rate measured value are sentenced
Disconnected to reach the core meltdown stage, then it is 5bar directly to set containment pressure, 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 judge with tricyclic linkage.Linkage judgment rule be：If tricyclic 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 tricyclic 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 is happened at outside containment, whole process shows that radioactivity is moved with animation form in upper figure
Shifting and prealarming process.When cut is happened at the auxiliary plant outside containment, 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 is warned to have
It is abnormal.If cut is happened at 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
Go out, in nuclear accident using the daily sampled data, for the degree of impairment of current first ring of rational judgment, determination methods
For：If primary Ioops iodine 131 equivalent activity value is less than 4.4GBq/t, clean primary Ioops are judged；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 is less than 650 degree, can qualitatively judge, fuel begins with breakage, in the case of further rational judgment is by 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 is：If core exit temperature is less than 700 DEG C, judge that no reactor core is damaged；If core exit temperature is more than 700 DEG C
And less than 1100 DEG C, then judge clad failure；If core exit temperature is more 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, specific method are：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 more than 0.02Gy/h in 1h and less than 500Gy/h, then judges clad failure；If full shell dosage rate is more than in 1h to 6h
0.02Gy/h and less than 100Gy/h, then judge clad failure；If full shell dosage rate is more than 0.02Gy/h and small in 6h to 5d
In 50Gy/h, then clad failure is judged；If full shell dosage rate was more 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 more than 0.02Gy/h and after one month less than 5Gy/h, judge that involucrum is broken
Damage；If full shell dosage rate is more 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 more than 50Gy/h in 6h to 5d, core meltdown is judged；Such as
The full shell dosage rate of fruit was more than 10Gy/h in 5d to one month, then judged core meltdown；If full shell dosage rate one month it
It is more than 5Gy/h afterwards, then judges core meltdown.
Further, judge that method of the cut in containment is：Reactor coolant loop pressure reduces；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
Water level occurs and then increases in melt pit；Reactor Spent Fuel Pool cools down and handles water level in water tank and reduces；In fuel degradation feelings
Dosage rate increases in reactor building under condition.
Further, judge that method of the cut in voltage-stablizer discharge line is：The temperature of voltage-stablizer discharge line upstream
Rapid rising or the temperature equal to voltage-stablizer (liquid phase or vapour phase).Judge that method of the cut on voltage-stablizer is：It is 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 that method of the cut outside containment is：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；It may the increase of melt pit water level of 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 that method of the cut on steam generator heat-transfer pipe is：On steam generator steam pipe line
Activity increases；Activity increase before reactor building isolation stage 2 in steam generator blowdown system；Condenser vacuum system
Activity increases.
Further, in one embodiment of the invention, it 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 discharge duct；Or in the event of steam generator tube rupture steam generator valve
Barrier or possible steam line break.If ventilation and filtration system treated reactor building is interior and reactor around factory
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 the definite foundation of leakage paths exist：Reactor building is isolated
The 1st stage of system and the 2nd stage isolation signals isolate reactor building penetration piece the detailed analysis of situation；Consider ventilation blower fortune
To the analysis of the activity measurement value in relation to system under row operating mode；The systematicness of " sensitive penetration piece " is monitored；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, it is right using online probe and thermal-hydraulic parameter determination methods
First ring, the second ring and tricyclic use the degree and radioactive transfer mistake of dynamic animation effect real-time exhibition nuclear accident generation
Journey.
Wherein, Fourth Ring is 500 meters of reactor building periphery, by the form of manual measurement, on reactor building periphery
500 monitor its radioactivity, and the degree of the reliability of tricyclic and radioactive transfer is derived with measurement data.Five rings is reaction
500 meters to 5 kilometers of heap workshop periphery, by using fixed r probes, 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 radiation diffusion process, are popped one's head in by the fixation r of five rings and the 6th ring
It can the anti-radioactive transfer degree for pushing away tricyclic and Fourth Ring.7th ring is outside 10 kilometers of reactor building periphery, is used
Accident consequence analysis network analysis radiates diffusion process, belongs to pure prediction content.
The method that the embodiment of the present invention is verified mutually by seven rings 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 essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (14)
1. a kind of nuclear emergency set state diagnosis and the comprehensive estimation method of damage sequence, which is characterized in that by nuclear emergency unit
It is divided into N rings from inside to outside since the reactor core, wherein, N is more than 3 for positive integer and N, and the first ring is reactor core, and the second ring is primary Ioops
Pressure boundary, tricyclic 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 next step in this way, otherwise strengthen monitoring；
Step B, judge whether the cut is happened in containment, then perform next step in this way, otherwise judge Fourth Ring extremely
N rings have exception；
Step C, persistently judge whether the tricyclic has abnormal leakage, then directly warning Fourth Ring to N rings have exception in this way,
And strengthen 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 rings is warned to have exception this moment, while strengthen monitoring.
2. nuclear emergency set state diagnosis as described in claim 1 and the comprehensive estimation method of damage sequence, which is characterized in that
In the step C, persistently judge whether first ring has exception while the lasting monitoring tricyclic.
3. nuclear emergency set state diagnosis as claimed in claim 2 and the comprehensive estimation method of damage sequence, 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 tricyclic
It is whether abnormal, Fourth Ring is directly warned to strengthen to N rings and is monitored, monitored results judge with tricyclic linkage；If heap
Core outlet temperature and the judgement of containment dosage rate measured value reach the core meltdown stage, and it is 5bar directly to set containment pressure,
And directly early warning Fourth Ring is or at once abnormal to N rings.
4. nuclear emergency set state diagnosis as claimed in claim 2 and the comprehensive estimation method of damage sequence, which is characterized in that
If reached according to the first ring described in break size, primary Ioops injection, dehydrating speed and safety devices operating condition integrated forecasting
Reveal the naked stage, then from this moment to directly predicting that Fourth Ring is normal to N rings from exposed time point, but need to strengthen monitoring, prison
Result is controlled with tricyclic linkage to judge；From exposed time point to future, directly predict that Fourth Ring is abnormal to N rings.
5. nuclear emergency set state diagnosis as claimed in claim 3 and the comprehensive estimation method of damage sequence, which is characterized in that
It is described linkage judgment rule be：If the tricyclic leaks extremely, Fourth Ring to N rings may be abnormal；If Fourth Ring
Exception is surveyed to N rings, then the tricyclic must leak.
6. nuclear emergency set state diagnosis as claimed in claim 4 and the comprehensive estimation method of damage sequence, which is characterized in that
It is described linkage judgment rule be：If the tricyclic leaks extremely, Fourth Ring to N rings may be abnormal；If Fourth Ring
Exception is surveyed to N rings, then the tricyclic must leak.
7. nuclear emergency set state diagnosis as claimed in claim 3 and the comprehensive estimation method of damage sequence, which is characterized in that
Using the degree of impairment of the first ring described in rational judgment, determination methods are：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.
8. nuclear emergency set state diagnosis as claimed in claim 3 and the comprehensive estimation method of damage sequence, which is characterized in that
The method for judging the reactor core damaged stage according to core exit temperature is：If core exit temperature is less than 700 DEG C, no heap is judged
Core is damaged；If core exit temperature is more than 700 DEG C and less than 1100 DEG C, clad failure is judged；If core exit temperature
More than 1100 DEG C and less than 1200 DEG C, then core meltdown is judged.
9. nuclear emergency set state diagnosis as claimed in claim 3 and the comprehensive estimation method of damage sequence, which is characterized in that
The method for judging the reactor core damaged stage according to containment dosage rate measured value is：If full shell dosage rate is less than 0.02Gy/h,
Judge that no reactor core is damaged；If full shell dosage rate is more than 0.02Gy/h in 1h and less than 500Gy/h, clad failure is judged；
If full shell dosage rate is more than 0.02Gy/h in 1h to 6h and less than 100Gy/h, clad failure is judged；If full shell dosage
Rate is more than 0.02Gy/h in 6h to 5d and less than 50Gy/h, then judges clad failure；If full shell dosage rate is at 5d to one
It is more than 0.02Gy/h in month and less than 10Gy/h, then judges clad failure；If full shell dosage rate is more than after one month
0.02Gy/h and less than 5Gy/h, then judge clad failure；If full shell dosage rate is more than 500Gy/h in 1h, reactor core is judged
Fusing；If full shell dosage rate is more than 100Gy/h in 1h to 6h, core meltdown is judged；If full shell dosage rate in 6h extremely
It is more than 50Gy/h in 5d, then judges core meltdown；If full shell dosage rate was more than 10Gy/h in 5d to one month, heap is judged
Core melts；If full shell dosage rate is more than 5Gy/h after one month, core meltdown is judged.
10. nuclear emergency set state diagnosis as described in any one of claim 1 to 9 and the comprehensive estimation method of damage sequence,
It is characterized in that, the N is equal to 7.
11. nuclear emergency set state diagnosis as claimed in claim 10 and the comprehensive estimation method of damage sequence, feature exist
In Fourth Ring is 500 meters of reactor building periphery, by the form of manual measurement, in described 500 meters of prisons in reactor building periphery
Its radioactivity is controlled, the degree of the reliability of the tricyclic and radioactive transfer is derived with measurement data.
12. nuclear emergency set state diagnosis as claimed in claim 11 and the comprehensive estimation method of damage sequence, feature exist
In five rings is 500 meters to 5 kilometers of the reactor building periphery, is popped one's head in by using fixed r, accident consequence analysis system
The deficiency of the Fourth Ring personal monitoring is supplemented with the form of on-line monitoring vehicle patrol.
13. nuclear emergency set state diagnosis as claimed in claim 12 and the comprehensive estimation method of damage sequence, feature exist
In, the 6th ring be 5 kilometers to 10 kilometers of the reactor building periphery, by the way of fixed r probes and the damage sequence
Analysis system analyzing radiation diffusion process counter can also be pushed away described by the fixed r probes at the five rings and the 6th ring
Tricyclic and the radioactive transfer degree at Fourth Ring.
14. nuclear emergency set state diagnosis as claimed in claim 13 and the comprehensive estimation method of damage sequence, feature exist
In the 7th ring is outside 10 kilometers of the reactor building periphery, is radiated and spread using the accident consequence analysis network analysis
Process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711219056.6A CN108091409B (en) | 2017-11-28 | 2017-11-28 | A kind of comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence |
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| CN108989744A (en) * | 2018-06-29 | 2018-12-11 | 岭东核电有限公司 | Million kilowatt nuclear power station emergency command monitoring method, device and terminal device |
| CN109215286A (en) * | 2018-08-27 | 2019-01-15 | 中广核工程有限公司 | The fire-disaster monitoring device and its fire hazard monitoring circuit of nuclear power station |
| CN110689973A (en) * | 2019-09-18 | 2020-01-14 | 上海电力大学 | Nuclear power station primary circuit pressure reduction control method under heat transfer pipe fracture accident |
| CN110991006A (en) * | 2019-11-06 | 2020-04-10 | 中国辐射防护研究院 | Core damage evaluation method for large LOCA accident of pressurized water reactor based on exposure time |
| CN112414472A (en) * | 2020-12-03 | 2021-02-26 | 深圳中广核工程设计有限公司 | Safety barrier integrity judging method, device, control equipment and storage medium |
| CN112652415A (en) * | 2020-12-01 | 2021-04-13 | 中国辐射防护研究院 | Post-processing plant emergency state grading determination method based on characteristic parameter analysis |
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| CN108989744A (en) * | 2018-06-29 | 2018-12-11 | 岭东核电有限公司 | Million kilowatt nuclear power station emergency command monitoring method, device and terminal device |
| CN109215286A (en) * | 2018-08-27 | 2019-01-15 | 中广核工程有限公司 | The fire-disaster monitoring device and its fire hazard monitoring circuit of nuclear power station |
| CN110689973A (en) * | 2019-09-18 | 2020-01-14 | 上海电力大学 | Nuclear power station primary circuit pressure reduction control method under heat transfer pipe fracture accident |
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| 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 |
| CN112652415A (en) * | 2020-12-01 | 2021-04-13 | 中国辐射防护研究院 | Post-processing plant emergency state grading determination method based on characteristic parameter analysis |
| 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 |
| CN112414472A (en) * | 2020-12-03 | 2021-02-26 | 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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