CN104134472A - Manual dosing and cleidoic dosing control system and method for containment vessel spray system - Google Patents
Manual dosing and cleidoic dosing control system and method for containment vessel spray system Download PDFInfo
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- CN104134472A CN104134472A CN201410305325.0A CN201410305325A CN104134472A CN 104134472 A CN104134472 A CN 104134472A CN 201410305325 A CN201410305325 A CN 201410305325A CN 104134472 A CN104134472 A CN 104134472A
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- dosing
- button
- containment
- chemical reagent
- isolation valve
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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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- Monitoring And Testing Of Nuclear Reactors (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention belongs to the technology of control and design of a nuclear power plant process system, and in particular relates to a manual dosing and cleidoic dosing control system and method for a containment vessel spray system; the manual dosing and cleidoic dosing control system includes a dosing button and a cleidoic dosing button arranged on a backup disc, the dosing button and the cleidoic dosing button are sued for control of a chemical reagent adding electric isolation valve, a radioactivity monitor is used for monitoring the irradiation dose condition in a containment vessel, according to the irradiation dose condition in the containment vessel, the dosing button is triggered to control the chemical reagent adding electric isolation valve to open, or the cleidoic dosing button is triggered to control the chemical reagent adding electric isolation valve to close, and dosing of the containment vessel spray system is controlled. The manual dosing button is triggered for dosing, iodine and granular fission products in the containment vessel can be absorbed, at the same time, error spray can be avoided by the cleidoic dosing button, and losses caused by error spray starting can be reduced.
Description
Technical field
The invention belongs to nuclear power plant technique design of system control technology, be specifically related to the manual dosing of a kind of containment spray system and locking control system for adding drugs and method, control system for adding drugs is optimized.
Background technology
Containment spray system is the ad hoc system of the important safety in pressurized-water reactor nuclear power plant.It is when reactor occurs under the accident conditions of LOCA or the pipeline breaking of containment inner vapor, by spray, make containment internal pressure and temperature ease down to the level that can receive, simultaneously by dosing, take away the fission product (being mainly iodine) in atmosphere in containment, reduce the corrosion of spray liquid to equipment.
In the design of the containment spray system before improvement, chemical reagent adds electronic isolation valve, closes under normal circumstances, and container spray signal produced after 5 minutes, and valve open directly adds chemical reagent, sees accompanying drawing 1.Container spray signal is triggered by high 4 signals of containment pressure (0.24Mpa), if now in containment in atmosphere fission product concentration not high, still can start dosing motorized valve and carry out dosing, equipment is caused to corrosion.In addition,, when containment pressure does not reach high 4 value, if need dosing, cannot open dosing motorized valve.
Summary of the invention
The object of the invention is to the defect for prior art, the manual dosing of a kind of containment spray system and locking control system for adding drugs and method are provided, increase security and the availability of containment spray system.
Technical scheme of the present invention is as follows: the manual dosing of a kind of containment spray system and locking control system for adding drugs, comprise the dosing button and the locking dosing button that are arranged on back-up disk, described dosing button and locking dosing button are used for controlling chemical reagent and add electronic isolation valve, radiation monitor is for monitoring the situation of containment internal irradiation dosage, according to the situation of containment internal irradiation dosage, trigger dosing button control chemical reagent and add electronic isolation valve unlatching, or by locking dosing button, making chemical reagent add electronic isolation valve closes, dosing to containment spray system is controlled.
The control method of the manual dosing of containment spray system as above and locking control system for adding drugs, when containment pressure does not reach high 4 value, if containment internal irradiation dosage reaches dosing requirement, by triggering dosing button control chemical reagent, add electronic isolation valve and open, carry out dosing; At container spray signal, produce after 5 minutes, can make chemical reagent add electronic isolation valve by locking dosing button closes, when radiation monitor monitoring containment internal irradiation dosage reaches dosing requirement, chemical reagent adds electronic isolation valve unlatching and carries out dosing.
Beneficial effect of the present invention is as follows: control method provided by the present invention and system can trigger dosing by manual dosing button, with iodine and the graininess fission product in absorption containment, simultaneously, can also avoid the spray of mistake peace by locking dosing button, to reduce peace spray error starting, bring loss and the corrosion to equipment.
Accompanying drawing explanation
Fig. 1 is the dosing control method process flow diagram of containment spray system in prior art;
Fig. 2 is containment spray system dosing of the present invention and locking dosing control method process flow diagram.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
According to " French 900MWe pressurized-water reactor nuclear power plant system and construction rule " (RCC-P; 1991 the 4th editions; nineteen ninety-five revision) about the safety classification requirement of electric instrument control equipment, all under accident conditions, the participation protective public's electric instrument control system belongs to 1E level.In the present invention, the function of manual dosing and locking dosing is under loop minor break accident conditions, manual triggers dosing or manual block medicine charging function, with this functional classification, it is all 1E level, by dosing button being set on the back-up disk in 1E level (BUP) and locking dosing button is realized, and the button on BUP power plant's computerized information and control system (KIC) is available and unavailable situation under, can operate.
The manual dosing of containment spray system provided by the present invention and locking control system for adding drugs, comprise the dosing button and the locking dosing button that are arranged on back-up disk, described dosing button and locking dosing button are used for controlling chemical reagent and add electronic isolation valve, radiation monitor is for monitoring the situation of containment internal irradiation dosage, according to the situation of containment internal irradiation dosage, trigger dosing button control chemical reagent and add electronic isolation valve unlatching, or by locking dosing button, making chemical reagent add electronic isolation valve closes, dosing to containment spray system is controlled.The monitoring equipment that containment radioactive dosage measuring instrument is 1E, its chain medicine charging function is also 1E, when radioactive dosage is low, locking dosing valve.
As shown in Figure 2, grug feeding jar liquid level represents in grug feeding jar, whether have the NAOH solution that can add, the low expression of liquid level NAOH solution is not enough, dosing valve should be closed, and only has and when grug feeding jar liquid level is not low, just has NAOH solution to add.
When NAOH solution is sufficient, according to containment internal state, while not reaching high 4 values (0.24MPa) as containment pressure, but containment internal irradiation dosage reaches dosing requirement, can manual unlocking chemical reagent adds electronic isolation valve and carries out dosing.
Under loop minor break accident conditions, in order to prevent mistake dosing, container spray signal produced after 5 minutes, can pass through manual block dosing button locking dosing, and, when containment internal irradiation dosage high by (3 * 10
2while Gy/h) not meeting, chemical reagent adds electronic isolation valve can not opened yet, and prevents that like this spray system from producing after 5 minutes with regard to dosing, causes mistake dosing, etching apparatus.So, under loop minor break accident conditions, only have in the high situation of full shell internal irradiation dosage and just start dosing, in dosing process, find that process conditions meet design requirement, at any time can locking dosing signal, stop dosing.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if of the present invention these are revised and within modification belongs to the scope of the claims in the present invention and equivalent technology thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (2)
1. the manual dosing of containment spray system and locking control system for adding drugs, it is characterized in that: comprise the dosing button and the locking dosing button that are arranged on back-up disk, described dosing button and locking dosing button are used for controlling chemical reagent and add electronic isolation valve, radiation monitor is for monitoring the situation of containment internal irradiation dosage, according to the situation of containment internal irradiation dosage, trigger dosing button control chemical reagent and add electronic isolation valve unlatching, or by locking dosing button, making chemical reagent add electronic isolation valve closes, dosing to containment spray system is controlled.
2. the control method of the manual dosing of containment spray system claimed in claim 1 and locking control system for adding drugs, it is characterized in that: when containment pressure does not reach high 4 value, if containment internal irradiation dosage reaches dosing requirement, by triggering dosing button control chemical reagent, add electronic isolation valve and open, carry out dosing; At container spray signal, produce after 5 minutes, can make chemical reagent add electronic isolation valve by locking dosing button closes, when radiation monitor monitoring containment internal irradiation dosage reaches dosing requirement, chemical reagent adds electronic isolation valve unlatching and carries out dosing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410305325.0A CN104134472B (en) | 2014-06-30 | 2014-06-30 | The manual dosing of containment spray system and locking control system for adding drugs and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410305325.0A CN104134472B (en) | 2014-06-30 | 2014-06-30 | The manual dosing of containment spray system and locking control system for adding drugs and method |
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| Publication Number | Publication Date |
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| CN104134472A true CN104134472A (en) | 2014-11-05 |
| CN104134472B CN104134472B (en) | 2016-10-12 |
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| CN201410305325.0A Active CN104134472B (en) | 2014-06-30 | 2014-06-30 | The manual dosing of containment spray system and locking control system for adding drugs and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863169A (en) * | 2017-11-15 | 2018-03-30 | 中广核工程有限公司 | The startup method and apparatus of nuclear power plant containment shell spray system |
| CN113707347A (en) * | 2021-07-12 | 2021-11-26 | 中国核电工程有限公司 | Method for preventing mistaken dosing of nuclear power plant containment spraying system and judgment module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5255296A (en) * | 1992-06-24 | 1993-10-19 | Westinghouse Electric Corp. | Collecting and recirculating condensate in a nuclear reactor containment |
| US20100232560A1 (en) * | 2007-12-27 | 2010-09-16 | Mitsubishi Heavy Industries, Ltd. | Ph adjusting system and ph adjusting method |
| CN102146936A (en) * | 2010-12-30 | 2011-08-10 | 上海阿波罗机械股份有限公司 | Chemical additive mixing pump for nuclear power station |
| CN102881342A (en) * | 2012-09-27 | 2013-01-16 | 中国核电工程有限公司 | Active and passive combined heat removal device for containment |
-
2014
- 2014-06-30 CN CN201410305325.0A patent/CN104134472B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5255296A (en) * | 1992-06-24 | 1993-10-19 | Westinghouse Electric Corp. | Collecting and recirculating condensate in a nuclear reactor containment |
| US20100232560A1 (en) * | 2007-12-27 | 2010-09-16 | Mitsubishi Heavy Industries, Ltd. | Ph adjusting system and ph adjusting method |
| CN102146936A (en) * | 2010-12-30 | 2011-08-10 | 上海阿波罗机械股份有限公司 | Chemical additive mixing pump for nuclear power station |
| CN102881342A (en) * | 2012-09-27 | 2013-01-16 | 中国核电工程有限公司 | Active and passive combined heat removal device for containment |
Non-Patent Citations (2)
| Title |
|---|
| 国家核安全局: "《核安全法规》", 19 May 1990, article "《安全导则：核电厂反应堆安全壳系统的设计》", pages: 1-15 * |
| 朱杰 等: "国内压水堆核电厂安全壳喷淋试验的比较分析", 《核安全》, vol. 12, no. 4, 31 December 2013 (2013-12-31), pages 89 - 91 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863169A (en) * | 2017-11-15 | 2018-03-30 | 中广核工程有限公司 | The startup method and apparatus of nuclear power plant containment shell spray system |
| CN113707347A (en) * | 2021-07-12 | 2021-11-26 | 中国核电工程有限公司 | Method for preventing mistaken dosing of nuclear power plant containment spraying system and judgment module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104134472B (en) | 2016-10-12 |
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