CN106816191A - The inspection method of neutron temperature Measurement channel and cable connection correctness - Google Patents
The inspection method of neutron temperature Measurement channel and cable connection correctness Download PDFInfo
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- CN106816191A CN106816191A CN201510867697.7A CN201510867697A CN106816191A CN 106816191 A CN106816191 A CN 106816191A CN 201510867697 A CN201510867697 A CN 201510867697A CN 106816191 A CN106816191 A CN 106816191A
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- measurement channel
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
- G21C17/112—Measuring temperature
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
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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
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention belongs to nuclear power station reactor core Nuclear measurement system technical field, the inspection method of a kind of neutron temperature Measurement channel and cable connection correctness is specifically disclosed, including：(1) position of the multicolumn neutron temperature Measurement channel of each hole is determined；(2) the first post neutron temperature Measurement channel in each hole is heated, judges that whether correct the first post neutron temperature Measurement channel is connected with loop cable；(3) the second post neutron temperature Measurement channel in each hole is heated, judges that whether correct the second post neutron temperature Measurement channel is connected with loop cable；(4) the 3rd post neutron temperature Measurement channel in each hole is heated, judges that whether correct the 3rd post neutron temperature Measurement channel is connected with loop cable；So as to complete the inspection of neutron temperature Measurement channel and cable connection correctness.The method can be checked neutron temperature measuring channel before unit opens heap with the connection correctness of cable, so as to ensure the correctness of its connection.
Description
Technical field
The invention belongs to nuclear power station reactor core Nuclear measurement system technical field, and in particular to a kind of neutron temperature measurement is logical
The inspection method in road and cable connection correctness.
Background technology
Nuclear power station reactor core Nuclear measurement system (ICIS), for accidental conditions, deviation accidental conditions, sets
The monitoring and safeguard protection of reactor assembly after meter accident conditions and accident, the instrument on the spot of system is neutron
Temperature measuring channel, is the combined probe for integrating neutron-flux detector and temperature sensor, 54
Neutron temperature Measurement channel (3 one group, installed by 18 reserving holes on pressure vessel top)
Installed in reactor core, linear power density (QL) and deviation bubble that system gathers signal of change fuel element by it
Nuclear boiling ratio (DNBR), and realize the Reactor trip function of reactor.It is connected with neutron temperature Measurement channel
54 altogether, supporting cable, is mainly used in completing the linkage function of neutron temperature Measurement channel and cement wall side,
Transmission is sent outside for signal.
During major overhaul, staff is right according to 54 neutron temperature Measurement channels and 54 cable KKS yards
Should be related to carries out one-to-one connection work.After the completion of the two connection, before unit starting, do not connect accordingly
Correctness checking measure is connect, the complete correct of connection work is not ensured that.Tested according to Correctness checking and pacified
Row, only in unit starting to 40%Nnom power levels, tests to check that cable connects by underthrust control rod
The correctness for connecing.But it is as wrong in found cable connection during unit operation at power, due to work on the spot bar
Part is limited, and will be unable to be corrected to connecting wrong situation in reactor core side.To ensure the monitoring of reactor core Nuclear measurement system
And the complete realization of defencive function is, it is necessary to set state recession could be carried out to the situation of cabling error
Correct, the normal startup of unit will be directly affected, the economic benefit and social benefit of unit will be affected.
In conventional major overhaul, there is no inspection method to check the connection correctness of cable before unit starting,
Once occurred without neutron temperature Measurement channel and cabling error is found in time, when set state is dropped back,
Cabling error is just corrected.
Based on case above, it is necessary to take measures to ensure neutron temperature Measurement channel with the correctness of cable connection.
The content of the invention
It is an object of the invention to provide a kind of neutron temperature Measurement channel and the reviewing party of cable connection correctness
Method, the method can be entered to neutron temperature measuring channel before unit opens heap with the connection correctness of cable
Row is checked, so as to ensure the correctness of its connection.
Realize the technical scheme of the object of the invention：A kind of inspection of neutron temperature Measurement channel and cable connection correctness
Checking method, the method specifically includes following steps：Step (1) determines the multicolumn neutron temperature measurement of each hole
The position of passage；Step (2) is heated to the first post neutron temperature Measurement channel in each hole, is judged
Whether correct first post neutron temperature Measurement channel is connected with loop cable；Step (3) is in each hole
Two post neutron temperature Measurement channels are heated, and judge that the second post neutron temperature Measurement channel connects with loop cable
Whether correct connect；Step (4) is heated to the 3rd post neutron temperature Measurement channel in each hole, is judged
Whether correct 3rd post neutron temperature Measurement channel is connected with loop cable；It is logical so as to complete neutron temperature measurement
The inspection in road and cable connection correctness.
Described step (1) is specific as follows：It is straight with what the side of equipment gate I was connected according to the side of access lock III
Line determine and mark the 3rd post neutron temperature Measurement channel of 1-9 holes and the second post of 10-18 holes in
The position of sub- temperature measuring channel, further according to the arrangement of three post neutron measurement passage inverse time needle sorts in hole,
The first post neutron temperature Measurement channel, the second post neutron temperature Measurement channel of 1-9 holes are determined and marked respectively
With the position of the first post neutron temperature Measurement channel, the 3rd post neutron temperature Measurement channel in 10-18 holes.
Described step (2) is specific as follows：Step (2.1) using heating plate to 1 to 9 hole and 10 to
The first post neutron temperature Measurement channel in 18 holes is heated；Step (2.2) is if the first post neutron
The resistance and temperature of temperature measuring channel rises, then illustrate the first post neutron temperature Measurement channel and loop cable
Connection is correct；Step (2.3) if the resistance and temperature of the first post neutron temperature Measurement channel does not rise,
Illustrate that the first post neutron temperature Measurement channel is true with loop cable malunion；Step (2.4) is if according to step
Rapid above-mentioned (2.3) judge the true with loop cable malunion of the first post neutron temperature Measurement channel, in execution
Step (2.1) to step (2.2) is stated, until judging that the first post neutron temperature Measurement channel connects with loop cable
Connect correct.
Described step (3) is specific as follows：Step (3.1) using heating plate to 1 to 9 hole and 10 to
The second post neutron temperature Measurement channel in 18 holes is heated；Step (3.2) is if the second post neutron
The resistance and temperature of temperature measuring channel rises, then illustrate the second post neutron temperature Measurement channel and loop cable
Connection is correct；Step (3.3) if the resistance and temperature of the second post neutron temperature Measurement channel does not rise,
Illustrate that the second post neutron temperature Measurement channel is true with loop cable malunion；Step (3.4) is if according to step
Rapid above-mentioned (2.3) judge the true with loop cable malunion of the second post neutron temperature Measurement channel, in execution
Step (2.1) to step (2.2) is stated, until judging that the second post neutron temperature Measurement channel connects with loop cable
Connect correct.
Described step (4) is specific as follows：Step (4.1) using heating plate to 1 to 9 hole and 10 to
The 3rd post neutron temperature Measurement channel in 18 holes is heated；Step (4.2) is if the 3rd post neutron
The resistance and temperature of temperature measuring channel rises, then illustrate the 3rd post neutron temperature Measurement channel and loop cable
Connection is correct；Step (4.3) if the resistance and temperature of the 3rd post neutron temperature Measurement channel does not rise,
Illustrate that the 3rd post neutron temperature Measurement channel is true with loop cable malunion；Step (4.4) is if according to step
Rapid above-mentioned (2.3) sentence the true with loop cable malunion of the 3rd post neutron temperature Measurement channel, perform above-mentioned
Step (2.1) is to step (2.2), until sentence the 3rd post neutron temperature Measurement channel being connected just with loop cable
Really；So as to complete the inspection of neutron temperature Measurement channel and cable connection correctness.
Advantageous Effects of the invention：The method of the present invention is carried out misaligning sub- temperature measuring channel structure
The situation of transformation, using simple effective method, the purpose of verification experimental verification is realized by changing temperature, should
Equipment heating-up temperature used by method is relatively low, and it is unfavorable that neutron temperature measuring channel inner detector will not be produced
Influence, the operating time is short, meets radiation protection ALARA principles, and the checking drawn by the method
It is visual result, effective and rapid, solve and open before heap i.e. to neutron temperature measuring channel and cable connection correctness
The requirement of inspection, it is to avoid check that cable connection is wrong by test method after unit starting, causes unit shape
The adverse effect of state recession.The method has very for the inspection checking of integrated detector and cable connection correctness
Good reference.
Surveyed by the actual inspection in scene after the completion of neutron temperature measuring channel and cable connection, neutron temperature
Measure passage internal structure research, scene with regard to earth signal can be used etc. analysis, find neutron temperature measurement leads to
After the completion of road and cable connection, it is feasible that cable connection Correctness checking is carried out immediately.Surveyed in neutron temperature
After the completion of amount passage and cable connection, the neutron temperature Measurement channel beyond reactor pressure vessel faying face
Height in 40cm, in this altitude range, at neutron temperature Measurement channel inner distance top 20cm pacify
Equipped with thermal resistance sensor, after the completion of cable connection, can in real time to 54 neutron temperature measurements in system
Temperature signal in passage is monitored, by way of outside is heated successively, the survey to thermal resistance sensor
Amount temperature is changed, and confirms whether the corresponding temperature of the thermal resistance sensor of heating rises in systems, from
And realize the judgement of cable connection correctness.
Brief description of the drawings
Fig. 1 is 1-9 hole neutron temperature Measurement channel mounting arrangement precedence diagrams
Fig. 2 is 10-18 hole neutron temperature Measurement channel mounting arrangement precedence diagrams
Fig. 3 is the reviewing party of a kind of neutron temperature Measurement channel provided by the present invention and cable connection correctness
Method temperature after heating rises and cable connection correction judgement flow chart.
In figure：1. the first post neutron temperature Measurement channel, 2. the second post neutron temperature Measurement channel, 3. the 3rd post
Neutron temperature Measurement channel.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
As shown in Figure 1, 2, 3, a kind of neutron temperature Measurement channel provided by the present invention is correct with cable connection
The inspection method of property, the method specifically includes following steps：
Step (1) determines the position of the middle multicolumn neutron temperature Measurement channel of each hole
It is (right according to access lock according to Fig. 1 and Fig. 2 after the completion of neutron temperature Measurement channel and cable connection
Answer III side) during the straight line that is connected with equipment gate (corresponding I side) determines and marks the 3rd post of 1-9 holes
The position of the second post neutron temperature Measurement channel 2 of sub- temperature measuring channel 3 and 10-18 holes, then root
According to the arrangement of three post neutron measurement passage inverse time needle sorts in hole, the first of 1-9 holes is determined and marked respectively
Post neutron temperature Measurement channel 1, the second post neutron temperature Measurement channel 2 and in 10-18 holes in the first post
The position of sub- temperature measuring channel 1, the 3rd post neutron temperature Measurement channel 3.
3rd post neutron temperature Measurement channel 3 of 1-9 holes is located at access lock III, and the first of 1-9 holes
Post neutron temperature Measurement channel 1, the second post neutron temperature Measurement channel 2, the 3rd post neutron temperature Measurement channel
3 circumferences formed with the side line of equipment gate I along the side of access lock III are uniformly distributed.
Second post neutron temperature Measurement channel 2 of 10-18 holes is located at equipment gate I, 10-18 holes
The first post neutron temperature Measurement channel 1 in hole, the second post neutron temperature Measurement channel 2, the 3rd post neutron temperature
Measurement channel 3 is uniformly distributed along the circumference that the side of access lock III is formed with the side line of equipment gate I.
Step (2) is heated to the first post neutron temperature Measurement channel 1 in each hole, judges the first post
Whether correct neutron temperature Measurement channel 1 is connected with loop cable, and the step is specific as follows：
Heating plate is fixed on neutron temperature Measurement channel top thermal resistance temperature by step (2.1) with U-shaped geometrical clamp
Degree meter installation site (position is at neutron temperature Measurement channel top 20cm), to 1 to 9 hole and 10
The first post neutron temperature Measurement channel 1 in 18 holes is heated, 3 minutes heat times.
Step (2.2) illustrates first if the resistance and temperature of the first post neutron temperature Measurement channel 1 rises
Post neutron temperature Measurement channel 1 is connected correctly with loop cable；
Step (2.3) illustrates if the resistance and temperature of the first post neutron temperature Measurement channel 1 does not rise
One post neutron temperature Measurement channel 1 is true with loop cable malunion；
Step (2.4) if according to step above-mentioned (2.3) judge the first post neutron temperature Measurement channel 1 with
Loop cable malunion really, is connected with loop cable to the first post neutron temperature Measurement channel 1 and corrects,
Above-mentioned steps (2.1) are performed to step (2.2), until judge the first post neutron temperature Measurement channel 1 and
Loop cable connection is correct.
Step (3) is heated to the second post neutron temperature Measurement channel 2 in each hole, judges the second post
Whether correct neutron temperature Measurement channel 2 is connected with loop cable, and the step is specific as follows：
Heating plate is fixed on neutron temperature Measurement channel top thermal resistance temperature by step (3.1) with U-shaped geometrical clamp
Degree meter installation site (position is at neutron temperature Measurement channel top 20cm), to 1 to 9 hole and 10
The second post neutron temperature Measurement channel 2 in 18 holes is heated, 3 minutes heat times.
Step (3.2) illustrates second if the resistance and temperature of the second post neutron temperature Measurement channel 2 rises
Post neutron temperature Measurement channel 2 is connected correctly with loop cable；
Step (3.3) illustrates if the resistance and temperature of the second post neutron temperature Measurement channel 2 does not rise
Two post neutron temperature Measurement channels 2 are true with loop cable malunion；
Step (3.4) if according to step above-mentioned (2.3) judge the second post neutron temperature Measurement channel 2 with
Loop cable malunion really, is connected with loop cable to the second post neutron temperature Measurement channel 2 and corrects,
Above-mentioned steps (3.1) are performed to step (3.2), until judge the second post neutron temperature Measurement channel 2 and
Loop cable connection is correct.
Step (4) is heated to the 3rd post neutron temperature Measurement channel 3 in each hole, judges the 3rd post
Whether correct neutron temperature Measurement channel 3 is connected with loop cable, and the step is specific as follows：
Heating plate is fixed on neutron temperature Measurement channel top thermal resistance temperature by step (4.1) with U-shaped geometrical clamp
Degree meter installation site (position is at neutron temperature Measurement channel top 20cm), to 1 to 9 hole and 10
The 3rd post neutron temperature Measurement channel 3 in 18 holes is heated, 3 minutes heat times.
Step (4.2) illustrates the 3rd if the resistance and temperature of the 3rd post neutron temperature Measurement channel 3 rises
Post neutron temperature Measurement channel 3 is connected correctly with loop cable；
Step (4.3) illustrates if the resistance and temperature of the 3rd post neutron temperature Measurement channel 3 does not rise
Three post neutron temperature Measurement channels 3 are true with loop cable malunion；
Step (4.4) if according to step above-mentioned (2.3) judge the 3rd post neutron temperature Measurement channel 3 with
Loop cable malunion really, is connected with loop cable to the 3rd post neutron temperature Measurement channel 3 and corrects,
Above-mentioned steps (4.1) are performed to step (4.2), until judge the 3rd post neutron temperature Measurement channel 3 and
Loop cable connection is correct.
So far the inspection of neutron temperature Measurement channel and cable connection correctness is completed.
By judging cable connection correctness method using heating of the invention, can be fast before unit starting
Speed and intuitive judgment goes out the correctness of neutron temperature Measurement channel and cable connection, and rises in the power of the assembling unit
During 40% rated power, the checking again of neutron temperature Measurement channel connection Correctness checking experiment is also obtained, not
There is the situation of cabling error, meet needs of expected design.
The present invention is explained in detail above in conjunction with drawings and Examples, but the present invention be not limited to it is above-mentioned
Embodiment, in the ken that those of ordinary skill in the art possess, can also not depart from the present invention
Various changes can be made on the premise of objective.The content not being described in detail in the present invention can use existing skill
Art.
Claims (5)
1. the inspection method of a kind of neutron temperature Measurement channel and cable connection correctness, it is characterised in that should
Method specifically includes following steps：
Step (1) determines the position of the multicolumn neutron temperature Measurement channel of each hole；
Step (2) is heated to the first post neutron temperature Measurement channel (1) in each hole, judges first
Whether correct post neutron temperature Measurement channel (1) is connected with loop cable；
Step (3) is heated to the second post neutron temperature Measurement channel (2) in each hole, judges second
Whether correct post neutron temperature Measurement channel (2) is connected with loop cable；
Step (4) is heated to the 3rd post neutron temperature Measurement channel (3) in each hole, judges the 3rd
Whether correct post neutron temperature Measurement channel (3) is connected with loop cable；
So as to complete the inspection of neutron temperature Measurement channel and cable connection correctness.
2. the inspection of a kind of neutron temperature Measurement channel according to claim 1 and cable connection correctness
Method, it is characterised in that：Described step (1) is specific as follows：
The straight line being connected with the side of equipment gate I according to the side of access lock III determines and marks the of 1-9 holes
Second post neutron temperature Measurement channel (2) of three post neutron temperatures Measurement channel (3) and 10-18 holes
Position, further according to the arrangement of three post neutron measurement passage inverse time needle sorts in hole, determine respectively and mark
First post neutron temperature Measurement channel (1) of 1-9 holes, the second post neutron temperature Measurement channel (2) and
First post neutron temperature Measurement channel (1) in 10-18 holes, the 3rd post neutron temperature Measurement channel (3)
Position.
3. the inspection of a kind of neutron temperature Measurement channel according to claim 2 and cable connection correctness
Method, it is characterised in that：Described step (2) is specific as follows：
Step (2.1) is surveyed using heating plate to the first post neutron temperature in 1 to 9 hole and 10 to 18 holes
Amount passage (1) is heated；
Step (2.2) is illustrated if the resistance and temperature of the first post neutron temperature Measurement channel (1) rises
First post neutron temperature Measurement channel (1) is connected correctly with loop cable；
Step (2.3) is said if the resistance and temperature of the first post neutron temperature Measurement channel (1) does not rise
Bright first post neutron temperature Measurement channel (1) is true with loop cable malunion；
Step (2.4) according to step above-mentioned (2.3) if judge the first post neutron temperature Measurement channel (1)
With loop cable malunion really, above-mentioned steps (2.1) are performed to step (2.2), until judging the first post
Neutron temperature Measurement channel (1) is connected correctly with loop cable.
4. the inspection of a kind of neutron temperature Measurement channel according to claim 3 and cable connection correctness
Method, it is characterised in that：Described step (3) is specific as follows：
Step (3.1) is surveyed using heating plate to the second post neutron temperature in 1 to 9 hole and 10 to 18 holes
Amount passage (2) is heated；
Step (3.2) is illustrated if the resistance and temperature of the second post neutron temperature Measurement channel (2) rises
Second post neutron temperature Measurement channel (2) is connected correctly with loop cable；
Step (3.3) is said if the resistance and temperature of the second post neutron temperature Measurement channel (2) does not rise
Bright second post neutron temperature Measurement channel (2) is true with loop cable malunion；
Step (3.4) according to step above-mentioned (2.3) if judge the second post neutron temperature Measurement channel (2)
With loop cable malunion really, above-mentioned steps (2.1) are performed to step (2.2), until judging the second post
Neutron temperature Measurement channel (2) is connected correctly with loop cable.
5. the inspection of a kind of neutron temperature Measurement channel according to claim 4 and cable connection correctness
Method, it is characterised in that：Described step (4) is specific as follows：
Step (4.1) is surveyed using heating plate to the 3rd post neutron temperature in 1 to 9 hole and 10 to 18 holes
Amount passage (3) is heated；
Step (4.2) is illustrated if the resistance and temperature of the 3rd post neutron temperature Measurement channel (3) rises
3rd post neutron temperature Measurement channel (3) is connected correctly with loop cable；
Step (4.3) is said if the resistance and temperature of the 3rd post neutron temperature Measurement channel (3) does not rise
Bright 3rd post neutron temperature Measurement channel (3) is true with loop cable malunion；
Step (4.4) if according to step above-mentioned (2.3) sentence the 3rd post neutron temperature Measurement channel (3) with
Loop cable malunion really, performs above-mentioned steps (2.1) to step (2.2), until sentencing the 3rd post neutron
Temperature measuring channel (3) is connected correctly with loop cable；
So as to complete the inspection of neutron temperature Measurement channel and cable connection correctness.
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| CN201510867697.7A CN106816191A (en) | 2015-11-30 | 2015-11-30 | The inspection method of neutron temperature Measurement channel and cable connection correctness |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108562371A (en) * | 2018-03-21 | 2018-09-21 | 东莞中子科学中心 | A kind of remote operating multiconductor automatic butt structure under radiation environment |
| CN108801483A (en) * | 2018-03-21 | 2018-11-13 | 合肥聚能电物理高技术开发有限公司 | It is a kind of that remote-operated multiconductor arrangements of electric connection is convenient for using soft graphite |
| WO2020186776A1 (en) * | 2019-03-15 | 2020-09-24 | 中广核核电运营有限公司 | Nuclear power plant reactor control rod addressing apparatus and method |
| CN111799006A (en) * | 2020-06-05 | 2020-10-20 | 江苏核电有限公司 | Method for checking software and hardware connection correctness of neutron temperature measurement channel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108562371A (en) * | 2018-03-21 | 2018-09-21 | 东莞中子科学中心 | A kind of remote operating multiconductor automatic butt structure under radiation environment |
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Application publication date: 20170609 |
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