CN104574884B - Leak the detection method of chlorine alarm warning function - Google Patents
Leak the detection method of chlorine alarm warning function Download PDFInfo
- Publication number
- CN104574884B CN104574884B CN201510056074.1A CN201510056074A CN104574884B CN 104574884 B CN104574884 B CN 104574884B CN 201510056074 A CN201510056074 A CN 201510056074A CN 104574884 B CN104574884 B CN 104574884B
- Authority
- CN
- China
- Prior art keywords
- chlorine
- leakage
- warning function
- alarm
- detection method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The present invention relates to the maintenance field of nuclear power water chlorination equipment.For solve prior art detection leakage chlorine alarm warning function it is whether normal when, the problem of process of the test brought is not accurate enough and staff is easily poisoned, the present invention proposes a kind of detection method of leakage chlorine alarm warning function, including：(1) preparation：Open the detection function of leakage chlorine alarm；(2) process of the test：Escape the ammonia in ammoniacal liquor；If producing a large amount of white cigarettes near the sensor probe for leaking chlorine alarm, illustrate that chlorine is leaked, reaction equation is 8NH3+3Cl2=6NH4Cl+N2↑；If not occurring a large amount of white cigarettes during ammonia effusion, chlorine is generated using reagent reacting：NaClO+2HCl=NaCl+H2O+Cl2↑；(3) agent treatment：Reagent dilutions are discharged.When being detected using the detection method of present invention leakage chlorine alarm warning function to the warning function for leaking chlorine alarm, can be quickly detected whether Lou chlorine alarm is normal, reaction controllability is higher, and detection process is fast, and testing result is accurate, and staff is difficult poisoning.
Description
Technical field
The present invention relates to the field of the nuclear power water factory plant maintenance safety inspection in nuclear power station maintenance process, more particularly to inspection
Check the method for leaking chlorine alarm warning function that electric water factory used during chlorination.
Background technology
Nuclear power is carried out disinfection with water using chlorination in nuclear power water factory, because chlorine is hypertoxic gas, therefore in chlorination
Chlorine leakage warning device-leakage chlorine alarm is provided with equipment, the alarm principle of leakage chlorine alarm is by leaking chlorine sensor
Chlorine content in probe detection air, then feeds back to alarm, and alarm is sent by warning device.And once leak chlorine alarm and go out
Existing failure, during warning function cisco unity malfunction, once leakage too high, the influence that may result in chlorine content in factory building occurs for chlorine
Staff's is healthy, occurs chlorine poisoning event.Therefore, the season of nuclear power water factory in repair and maintenance project, leaks chlorine report
Alert instrument warning function is detected as pressure and must survey project.
Because chlorine is nuclear power to be entered with water using bottled chlorine as chlorine gas source in toxic gas, therefore nuclear power water factory
Row sterilization, chlorine cylinder was used after one month (summer) to three months (winter), and the chlorine in chlorine cylinder is not enough to support chlorination to set
Standby normal work, but now still have remaining chlorine in bottle.In conventional operating process, staff can change bottled chlorine
When, the chlorine cylinder removed is placed near the leakage chlorine sensor probe of Lou chlorine alarm, remaining chlorine in bottle is freely expanded
Shed and, so as to detect whether the warning function of Lou chlorine alarm is normal.However, when making to be detected in this way, work
Make personnel need to leakage chlorine alarm near be operated, without obvious phenomenon determine chlorine whether out of chlorine cylinder loss comes out,
Process of the test is not accurate enough, and staff is placed oneself in the midst of in the higher environment of chlorine gas concentration, chlorine poisoning phenomenon easily occurs.
The content of the invention
When detecting whether leakage chlorine alarm warning function is normal to solve prior art, the process of the test brought is not accurate enough
The problem of being easily poisoned with staff, the present invention proposes a kind of detection method for leaking chlorine alarm warning function, the detection method
Comprise the following steps：
(1) preparation
Check wiring and the energization situation of leakage chlorine alarm, it is ensured that leakage chlorine alarm is in holding state, and adjusts reset
Button, opens the chlorine detection function of leakage chlorine alarm；
(2) checkout procedure
Ammoniacal liquor is contained in open-top receptacle, and the open-top receptacle is placed on to the leakage chlorine sensor probe of Lou chlorine alarm
Near, then open-top receptacle is gently rocked, ammonia is escaped, white cigarette shape material whether is produced near observation leakage chlorine sensor probe；
If there are a large amount of white cigarettes to produce near the leakage chlorine sensor probe for leaking chlorine alarm, and leak chlorine alarm and never sent out from on-test
Go out alarm, then illustrate that the chlorine in chlorination equipment has been leaked, leakage chlorine alarm warning function breaks down, and reaction equation is
8NH3+3Cl2=6NH4Cl+N2↑；If not occurring a large amount of white cigarettes during leak detection, staff need to using reagent sodium hypochlorite and
Whether watery hydrochloric acid reaction generation chlorine is normal with the warning function for detecting Lou chlorine alarm, and reaction equation is：NaClO+2HCl
=NaCl+H2O+Cl2↑；
(3) agent treatment
After leakage chlorine alarm warning function detection terminates, discharged after reaction reagent is diluted.
The warning function for leaking chlorine alarm is detected using the detection method of present invention leakage chlorine alarm warning function
When, whether normal, and reaction has higher controllability if can be quickly detected Lou chlorine alarm, reagent starts reaction just at once
Produce chlorine so that detection process can be completed in very short time, and testing result is more accurate.
Preferably, during the leak detection, the time that ammoniacal liquor is exposed in factory building is 3s~10s (second).Ammoniacal liquor is opened light
Light rock can produce ammonia, and ammonia is toxic gas, and exposure in atmosphere can be to the healthy of neighbouring staff for a long time
Produce high risks.Meanwhile, the reaction speed of ammonia and chlorine quickly, if there is chlorine leakage in factory building, connects in ammonia with chlorine
Within tactile 1s, ammonia will generate white cigarette shape material ammonium chloride with chlorine reaction at once, and reaction is acutely and reacting phenomenon is easily seen
Examine, reaction result is waited without time-consuming.
Preferably, the sodium hypochlorite used in checkout procedure is that concentration range is molten in 4%~8% sodium hypochlorite
Liquid.When liquor natrii hypochloritis's concentration is too low, the course of reaction of liquor natrii hypochloritis and hydrochloric acid is more slow, the amount of chlorine produced compared with
It is low, it is impossible to the detecting concentration scope of the leakage chlorine sensor probe of leakage chlorine alarm is reached in moment, one section of reagent reacting is needed to wait for
Time can complete detection, but staff's supervisory instrument nearby is needed during due to experiment, and suction chlorine can be right for a long time
The body of staff produces injury, or even triggers poisoning.The excessive concentration of sodium hypochlorite can cause reaction excessively acute again
It is strong, produce amount of chlorine excessive, although detecting step can be quickly completed, but because reagent concentration is higher, after detecting step terminates
Reagent still can the sustained response long period, staff after diluting reaction during reagent still can suction part chlorine, to work
Considerable influence can be produced by making the personal safety of personnel.
Further, the concentration of the liquor natrii hypochloritis is 6%.Sodium hypochlorite using sodium hypochlorite content 6%
Solution during the course of the reaction, the leakage chlorine sensor probe detection of leakage chlorine alarm enough can be produced in time as reaction reagent
After the completion of the chlorine gas concentration arrived, and detection, the dilution work of reagent is relatively easy to.
Further, the volume of the liquor natrii hypochloritis used in checkout procedure is 3mL~5mL.Only need 3mL~5mL dense
The liquor natrii hypochloritis 4%~8% is spent, is reacted with watery hydrochloric acid, obtained chlorine is enough by the leakage chlorine of leakage chlorine alarm
Sensor probe is detected.
Preferably, the concentration range of the watery hydrochloric acid is 8%~15%.The watery hydrochloric acid reacted with liquor natrii hypochloritis
Excess is needed, this causes course of reaction more rapidly and sufficiently.
Further, the concentration of the watery hydrochloric acid is 12%.Concentration is relatively easy to for 12% watery hydrochloric acid preparation, and in examination
Chlorine can be comparatively fast produced in agent course of reaction, it is to avoid the peace caused by the chlorine that staff's long-time haptoreaction is produced
Full problem.
Preferably, the volume for the watery hydrochloric acid used in checkout procedure is 3mL~5mL.The chlorine that reaction reagent is obtained only is used
Whether there is obstacle in the warning function of detection leakage chlorine alarm, therefore, as long as the amount for the chlorine that reaction is produced can be by leakage chlorine
The leakage chlorine sensor probe of alarm is detected, and the amount of reaction reagent is without excessive.
Preferably, the volume for the water of diluting reaction reagent is more than 100 times of reaction reagent volume.More than hundred times waters
After being diluted to reaction reagent, reagent will not continue to react after detection terminates, and can pass through the pumping equipments such as sewer
Naturally drain, environment or water quality will not be impacted.
Use the detection method of present invention leakage chlorine alarm warning function so that the warning function of leakage chlorine alarm was detected
Journey is more quick, accurate, and reaction reagent is readily available, and course of reaction is more rapid, and detection can be completed within a short period of time,
So that the time that staff is exposed under chlorine gas environment greatly shortens, the person peace of staff has largely been ensured
Entirely.
Embodiment
Embodiment 1：
A kind of detection method for leaking chlorine alarm warning function, the detection method comprises the following steps：
(1) preparation
Check wiring and the energization situation of leakage chlorine alarm, it is ensured that leakage chlorine alarm is in holding state, and adjusts reset
Button, opens the chlorine detection function of leakage chlorine alarm；
(2) checkout procedure
Ammoniacal liquor is contained in open-top receptacle, and the open-top receptacle is placed on to the leakage chlorine sensor probe of Lou chlorine alarm
Near, then open-top receptacle 5s is gently rocked, so that the ammonia in ammoniacal liquor is fully escaped, reaction equation isWhite cigarette shape material whether is produced near observation leakage chlorine sensor probe；If leaking chlorine alarm
There are a large amount of white cigarettes to produce near leakage chlorine sensor probe, and leak chlorine alarm and alarm is never sent from on-test, then illustrate
Chlorine in chlorination equipment has been revealed, and leakage chlorine alarm warning function breaks down, and reaction equation is 8NH3+3Cl2=
6NH4Cl+N2↑；If not occurring a large amount of white cigarettes during leak detection, staff need to use concentration for 6% liquor natrii hypochloritis
3mL, reaction reagent is made with concentration for 12% watery hydrochloric acid 3mL, after both reagents are mixed reaction generation chlorine with
Whether detection leakage chlorine alarm warning function is normal, and reaction equation is：NaClO+2HCl=NaCl+H2O+Cl2↑；If now leaking
Chlorine alarm does not send alarm yet, then illustrates that obstacle occurs in the warning function of the leakage chlorine alarm；If leakage chlorine alarm sends police
Report, then illustrate that the warning function of the leakage chlorine alarm is normal；
(3) agent treatment
After leakage chlorine alarm warning function detection terminates, after reaction reagent plus 1L water are diluted by sewer certainly
So discharge.
Embodiment 2：
A kind of detection method for leaking chlorine alarm warning function, the detection method comprises the following steps：
(1) preparation
Check wiring and the energization situation of leakage chlorine alarm, it is ensured that leakage chlorine alarm is in holding state, and adjusts reset
Button, opens the chlorine detection function of leakage chlorine alarm；
(2) checkout procedure
Ammoniacal liquor is contained in open-top receptacle, and the open-top receptacle is placed on to the leakage chlorine sensor probe of Lou chlorine alarm
Near, then open-top receptacle 3s is gently rocked, so that the ammonia in ammoniacal liquor is fully escaped, reaction equation isWhite cigarette shape material whether is produced near observation leakage chlorine sensor probe；If leaking chlorine alarm
There are a large amount of white cigarettes to produce near leakage chlorine sensor probe, and leak chlorine alarm and alarm is never sent from on-test, then illustrate
Chlorine in chlorination equipment has been revealed, and leakage chlorine alarm warning function breaks down, and reaction equation is 8NH3+3Cl2=
6NH4Cl+N2↑；If not occurring a large amount of white cigarettes during leak detection, staff need to use concentration for 8% liquor natrii hypochloritis
3mL, reaction reagent is made with concentration for 8% watery hydrochloric acid 5mL, and reaction generates chlorine to examine after both reagents are mixed
Leaking hunting, whether chlorine alarm warning function is normal, and reaction equation is：NaClO+2HCl=NaCl+H2O+Cl2↑；If now leaking chlorine
Alarm does not send alarm yet, then illustrates that obstacle occurs in the warning function of the leakage chlorine alarm；If leakage chlorine alarm sends alarm,
Then illustrate that the warning function of the leakage chlorine alarm is normal；
(3) agent treatment
After leakage chlorine alarm warning function detection terminates, after reaction reagent plus 1L water are diluted by sewer certainly
So discharge.
Embodiment 3：
A kind of detection method for leaking chlorine alarm warning function, the detection method comprises the following steps：
(1) preparation
Check wiring and the energization situation of leakage chlorine alarm, it is ensured that leakage chlorine alarm is in holding state, and adjusts reset
Button, opens the chlorine detection function of leakage chlorine alarm；
(2) checkout procedure
Ammoniacal liquor is contained in open-top receptacle, and the open-top receptacle is placed on to the leakage chlorine sensor probe of Lou chlorine alarm
Near, then open-top receptacle 10s is gently rocked, so that the ammonia in ammoniacal liquor is fully escaped, reaction equation isWhite cigarette shape material whether is produced near observation leakage chlorine sensor probe；If leaking chlorine alarm
There are a large amount of white cigarettes to produce near leakage chlorine sensor probe, and leak chlorine alarm and alarm is never sent from on-test, then illustrate
Chlorine in chlorination equipment has been revealed, and leakage chlorine alarm warning function breaks down, and reaction equation is 8NH3+3Cl2=
6NH4Cl+N2↑；If not occurring a large amount of white cigarettes during leak detection, staff need to use concentration for 4% liquor natrii hypochloritis
5mL, reaction reagent is made with concentration for 15% watery hydrochloric acid 3mL, after both reagents are mixed reaction generation chlorine with
Whether detection leakage chlorine alarm warning function is normal, and reaction equation is：NaClO+2HCl=NaCl+H2O+Cl2↑；If now leaking
Chlorine alarm does not send alarm yet, then illustrates that obstacle occurs in the warning function of the leakage chlorine alarm；If leakage chlorine alarm sends police
Report, then illustrate that the warning function of the leakage chlorine alarm is normal；
(3) agent treatment
After leakage chlorine alarm warning function detection terminates, after reaction reagent plus 1L water are diluted by sewer certainly
So discharge.
The leakage chlorine of chlorination equipment in nuclear power water is alarmed using the detection method of present invention leakage chlorine alarm warning function
The warning function of instrument detected, whether normal, and reaction has higher controllability, makes if being enough quickly detected Lou chlorine alarm
Obtaining detection process can complete in very short time, and testing result is more accurate.Also reducing staff simultaneously and being exposed to has
Time in chlorine gas environment, it is ensured that staff's is healthy.
Claims (9)
1. a kind of detection method for leaking chlorine alarm warning function, it is characterised in that the detection method comprises the following steps：
(1) preparation
Check wiring and the energization situation of leakage chlorine alarm, it is ensured that leakage chlorine alarm is in holding state, and adjust SR,
Open the chlorine detection function of leakage chlorine alarm；
(2) checkout procedure
Ammoniacal liquor is contained in open-top receptacle, and the leakage chlorine sensor probe that the open-top receptacle is placed on into Lou chlorine alarm is attached
Closely, then gently open-top receptacle is rocked, ammonia is escaped, white cigarette shape material whether is produced near observation leakage chlorine sensor probe；If
There are a large amount of white cigarettes to produce near the leakage chlorine sensor probe for leaking chlorine alarm, and leak chlorine alarm and never sent from on-test
Alarm, then illustrate that the chlorine in chlorination equipment has been leaked, and leakage chlorine alarm warning function breaks down, and reaction equation is 8NH3
+3Cl2=6NH4Cl+N2↑；If not occurring a large amount of white cigarettes during ammonia effusion, staff need to use reagent sodium hypochlorite
Whether normal with the warning function for detecting Lou chlorine alarm with watery hydrochloric acid reaction generation chlorine, reaction equation is：NaClO+
2HCl=NaCl+H2O+Cl2↑；
(3) agent treatment
After leakage chlorine alarm warning function detection terminates, discharged after reaction reagent is diluted.
2. the detection method of leakage chlorine alarm warning function according to claim 1, it is characterised in that the checkout procedure
In, the time that ammoniacal liquor is exposed in factory building is 3s~10s.
3. the detection method of leakage chlorine alarm warning function according to claim 1, it is characterised in that in checkout procedure
Using to sodium hypochlorite be liquor natrii hypochloritis of the concentration range 4%~8%.
4. the detection method of leakage chlorine alarm warning function according to claim 3, it is characterised in that the sodium hypochlorite
The concentration of solution is 6%.
5. the detection method of leakage chlorine alarm warning function according to claim 3, it is characterised in that used in checkout procedure
The volume of the liquor natrii hypochloritis arrived is 3mL~5mL.
6. the detection method of leakage chlorine alarm warning function according to claim 1, it is characterised in that the watery hydrochloric acid
Concentration range is 8%~15%.
7. the detection method of leakage chlorine alarm warning function according to claim 6, it is characterised in that the watery hydrochloric acid
Concentration is 12%.
8. the detection method of leakage chlorine alarm warning function according to claim 6, it is characterised in that used in checkout procedure
The volume of the watery hydrochloric acid arrived is 3mL~5mL.
9. the detection method of leakage chlorine alarm warning function according to claim 1, it is characterised in that for diluting reaction
The volume of the water of reagent is more than 100 times of reaction reagent volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510056074.1A CN104574884B (en) | 2015-02-03 | 2015-02-03 | Leak the detection method of chlorine alarm warning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510056074.1A CN104574884B (en) | 2015-02-03 | 2015-02-03 | Leak the detection method of chlorine alarm warning function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104574884A CN104574884A (en) | 2015-04-29 |
| CN104574884B true CN104574884B (en) | 2017-08-25 |
Family
ID=53090833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510056074.1A Active CN104574884B (en) | 2015-02-03 | 2015-02-03 | Leak the detection method of chlorine alarm warning function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104574884B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105225435A (en) * | 2015-09-18 | 2016-01-06 | 云南大红山管道有限公司 | A kind of nitric acid leakage warning device |
| CN105225587B (en) * | 2015-10-29 | 2017-12-19 | 苏州热工研究院有限公司 | A kind of popular science teaching aid and science popularization method on nuclear power plant reactor safety |
| CN109856311A (en) * | 2018-10-31 | 2019-06-07 | 国家电网公司 | Ground end cable is anti-to dig disconnected prior-warning device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4464653A (en) * | 1981-12-09 | 1984-08-07 | The Bendix Corporation | Combustible gas detection system |
| CN2101291U (en) * | 1991-09-03 | 1992-04-08 | 重庆市市中区柯原燃油仪表厂 | Detecting and warning instrument for chlorine |
| CN202795664U (en) * | 2012-04-13 | 2013-03-13 | 南宁同展拓电子科技有限责任公司 | Chlorine leakage detecting alarm system based on zigbee technology |
| CN102915624B (en) * | 2012-09-27 | 2014-09-17 | 淄博贝林电子有限公司 | Detecting device and detecting method of fuel gas alarm |
| CN203204809U (en) * | 2013-03-26 | 2013-09-18 | 滨州市计量测试检定所 | Gas alarm on-line detecting comprehensive device |
| CN203498481U (en) * | 2013-09-17 | 2014-03-26 | 天津市郁峰化工有限公司 | Chlorine leaking recycling reproduction system |
-
2015
- 2015-02-03 CN CN201510056074.1A patent/CN104574884B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104574884A (en) | 2015-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104574884B (en) | Leak the detection method of chlorine alarm warning function | |
| KR102443718B1 (en) | System for producing 3-dimensional diffusion prediction map based on cyber physical for monitoring air pollution gas diffusion of environmental facilities, and method for the same | |
| CN111325455B (en) | Limited space operation safety risk assessment system | |
| RU2019108800A (en) | SYSTEM PLATFORM AND METHOD FOR PERMANENT ONLINE MONITORING Water quality and safety of the entire system fluid using blocks With a plurality of sensors with online ANALYSIS OF CROSS-checking of data on remote servers 5 USING THE SOFTWARE AND artificial intelligence algorithms | |
| CN103513637A (en) | Laboratory environment safety control system | |
| KR101774105B1 (en) | a remote detecting system of dangerous material | |
| KR101530374B1 (en) | A storage apparatus of sodium hypochlorite | |
| CN107421877B (en) | Simulate the concrete durability experiment apparatus and method of stray electrical current and tunnel air environment | |
| NL2016828A (en) | Method for monitoring gas concentrations at a site | |
| CN109816912A (en) | Fire evacuation method, apparatus and readable storage medium storing program for executing | |
| CN111539579A (en) | Method and device for determining emergency escape route | |
| CN114424050B (en) | Detection of total chlorine in seawater | |
| JP2000035372A (en) | Inspection method through foaming by infrared ray | |
| CN111599246B (en) | Training system for simulating dangerous chemical pollution | |
| CN117455243A (en) | Gas leakage detection system based on chemical tail gas storage tank | |
| KR102654940B1 (en) | Portable system for measuring gases inside manholes | |
| CL2007002205A1 (en) | Device for measuring the concentration of chlorine dioxide or a gas solube in water in an aqueous solution comprising a gas monitoring device and a gas releasing device; and procedure to measure the concentration of a water soluble gas. | |
| TWI472736B (en) | Air leak detection apparatus and method thereof | |
| Karthika et al. | Realtime Embedded Smart Jacket System for Coal Miners | |
| CN108827958A (en) | For quickly detecting the kit and its detection method of magnesium chloride in edible mushroom | |
| CN205678420U (en) | A kind of novel ammonia district Water curtain wall | |
| KR101645077B1 (en) | A safety supplie including sulfuration compound detector | |
| CN215953440U (en) | Remote monitor for hydrogen sulfide concentration | |
| KR102388471B1 (en) | The gas deodorization and inside environment detection system of a sewage disposal plant | |
| Khan | Dap-1 ammonia tank explosion: Safety and security concerns in chemical process plant in bangladesh |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 518124 Guangdong city of Shenzhen province Luohu District Buxin East Garden Building 37 Applicant after: Center maintenance Co., Ltd Address before: 518124 Guangdong city of Shenzhen province Luohu District Buxin East Garden Building 37 Applicant before: CHINA NATIONAL NUCLEAR CORPORATION SHENZHEN 23 NUCLEAR POWER INSPECTION AND MAINTENANCE CO., LTD. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: CHINA NATIONAL NUCLEAR CORPORATION SHENZHEN 23 NUCLEAR POWER INSPECTION AND MAINTENANCE CO., LTD. TO: CHINA NUCLEAR INDUSTRY MAINTENANCE CO., LTD. |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |