CN104347130B - Nuclear power station radiation alarm inhibition method, device and system - Google Patents
Nuclear power station radiation alarm inhibition method, device and system Download PDFInfo
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- CN104347130B CN104347130B CN201310320180.7A CN201310320180A CN104347130B CN 104347130 B CN104347130 B CN 104347130B CN 201310320180 A CN201310320180 A CN 201310320180A CN 104347130 B CN104347130 B CN 104347130B
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- 230000005855 radiation Effects 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000005764 inhibitory process Effects 0.000 title claims abstract description 27
- 238000012544 monitoring process Methods 0.000 claims abstract description 65
- 230000001629 suppression Effects 0.000 claims description 77
- 230000006872 improvement Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 230000002401 inhibitory effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/04—Safety arrangements
- G21D3/06—Safety arrangements responsive to faults within the plant
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention discloses a nuclear power station radiation alarm inhibition method comprising the steps that a nuclear power station radiation monitoring system transmits monitoring result information to a nuclear power station digital control system DCS; if the monitoring result information is early warning information, whether alarm operation is executed is confirmed by the DCS according to the preset alarm control state; and if the alarm control state is an alarm inhibition state, execution of alarm operation according to the early warning information is forbidden by the DCS. Therefore, remote alarm inhibition in a nuclear power station can be realized. Besides, the invention also discloses a nuclear power station radiation alarm inhibition device and system.
Description
Technical Field
The invention belongs to the field of nuclear power station security, and particularly relates to a method, equipment and a system for inhibiting nuclear power station radiation alarm.
Background
The primary function of a nuclear power Plant Radiation Monitoring System (KRT) is to realize Radiation Monitoring of safety barriers, effluents and workplaces in a nuclear power Plant, provide an alarm function, and take necessary measures, and an alarm signal is sent to a nuclear power Plant Digital Control System (DCS) to display or/and interlock equipment of a process System in a main Control room. According to the design condition of the current radiation monitoring system, the radiation monitoring equipment is generally designed to automatically trigger fault alarm and over-threshold alarm after power failure so as to realize fault safety. When maintenance is required due to a fault, a power supply is generally required to be cut off, and signals directly sent to the DCS through the relay switch can be restrained in a local junction box in order to prevent false triggering of the alarm exceeding a threshold value.
And an alarm signal sent to the DCS through the relay switch, and when the KRT junction box normally operates, the alarm suppression switch in the KRT junction box is closed. When the KRT equipment does not alarm, the alarm contact is opened, the input signal of the DCS signal acquisition circuit is at a low level, and the alarm is not triggered; when KRT equipment reports to the police, the warning contact is closed, and DCS signal acquisition circuit input signal is the high level, triggers the warning. During KRT equipment maintenance, the suppression switch in the junction box needs to be disconnected, and DCS signal input is forced to be low level, so that false triggering alarm is avoided. Because the relay alarm signal suppression needs to be operated by a worker on the spot, the worker needs to enter the spot to disconnect the suppression switch in the junction box, so that the DCS signal input is forced to be a low level to realize the alarm suppression, the worker needs to stay in a radiation place to realize the operation, the stay time of the worker in the radiation place is prolonged, the worker is exposed in the radiation place, the physical and mental health is influenced, and the reduction of the irradiated dose is not facilitated.
How to avoid the situation that the staff enters the place to operate and realize the alarm suppression is a problem to be solved urgently in the nuclear power operation safety.
Disclosure of Invention
The invention aims to: in the nuclear power operation radiation detection process, the method, the equipment and the system for inhibiting the radiation alarm of the nuclear power station are provided, the alarm control state is preset, so that whether the alarm operation is executed or not is determined, a remote alarm inhibition mechanism in the nuclear power station can be realized, an operator is prevented from being influenced by the irradiation dose to realize the alarm inhibition, and the requirement of the safety protection of the nuclear power station is effectively met.
In order to achieve the above object, the present invention provides a nuclear power station radiation alarm suppression method, which includes:
the nuclear power station radiation monitoring system sends monitoring result information to a nuclear power station Digital Control System (DCS);
if the monitoring result information is early warning information, the DCS determines whether to execute an alarm operation according to a preset alarm control state;
and if the alarm control state is an alarm inhibiting state, the DCS prohibits executing alarm operation according to the early warning information.
As an improvement of the method for suppressing a nuclear power station radiation alarm of the present invention, the method further includes:
and if the monitoring result information is early warning information and the alarm control state is an alarm non-inhibition state, the DCS executes alarm operation according to the early warning information.
As an improvement of the method for suppressing a nuclear power station radiation alarm of the present invention, the method further includes:
and if the monitoring result information is non-early warning information and the alarm control state is an alarm non-inhibition state, the DCS does not execute alarm operation.
As an improvement of the method for suppressing a nuclear power station radiation alarm of the present invention, the method further includes:
and if the monitoring result information is non-early warning information and the alarm control state is an alarm suppression state, the DCS does not execute alarm operation.
In order to achieve the above object, the present invention also provides a nuclear power plant radiation alarm suppression apparatus, including:
the receiving module is used for receiving monitoring result information sent by the nuclear power station radiation monitoring system;
the judging module is used for judging the monitoring result information, and if the monitoring result information is early warning information, whether to execute alarm operation is determined according to a preset alarm control state;
and the alarm control module is used for forbidding to execute alarm operation according to the early warning information if the alarm control state is an alarm suppression state.
As an improvement of the nuclear power plant radiation alarm suppression apparatus of the present invention, the apparatus further comprises:
the device comprises a setting module and a control module, wherein the setting module is used for presetting an alarm control state, and the alarm control state comprises an alarm suppression state and an alarm non-suppression state.
As an improvement of the nuclear power station radiation alarm suppression device of the present invention, the alarm control module is further configured to:
if the alarm control state is an alarm non-inhibition state, executing alarm operation according to the early warning information; or,
if the monitoring result information is non-early warning information and the alarm control state is an alarm non-inhibition state, not executing alarm operation; or
And if the monitoring result information is non-early warning information and the alarm control state is an alarm suppression state, not executing alarm operation.
In order to achieve the above object, the present invention further provides a nuclear power plant radiation alarm suppression system, including:
the nuclear power station radiation monitoring system is used for sending monitoring result information to the nuclear power station digital control system;
and the nuclear power station digital control system DCS is used for determining whether to execute alarm operation according to a preset alarm control state if the monitoring result information is early warning information, and forbidding to execute the alarm operation according to the early warning information if the alarm control state is an alarm suppression state.
As an improvement of the nuclear power station radiation alarm suppression system, the nuclear power station digital control system DCS is also used for presetting alarm control states, and the alarm control states comprise an alarm suppression state and an alarm non-suppression state.
As an improvement of the nuclear power station radiation alarm suppression system of the present invention, the digital control system DCS of the nuclear power station is further configured to:
if the alarm control state is an alarm non-inhibition state, executing alarm operation according to the early warning information; or,
if the monitoring result information is non-early warning information and the alarm control state is an alarm non-inhibition state, not executing alarm operation; or
And if the monitoring result information is non-early warning information and the alarm control state is an alarm suppression state, not executing alarm operation.
Compared with the prior art, the method, the equipment and the system for inhibiting the nuclear power station radiation alarm have the following beneficial technical effects: the alarm control state is preset, so that whether alarm operation is executed or not is determined, a remote alarm suppression mechanism in the nuclear power station is realized, an operator is prevented from being influenced by the irradiation dose to realize alarm suppression, and the requirement of safety protection of the nuclear power station is effectively met; in addition, only small change is needed to be carried out on hardware, remote alarm suppression is mainly realized in a software mode, a system does not need to be greatly changed, the cost is low, and a good technical effect is achieved.
Drawings
The following describes a method, a device and a system for suppressing a nuclear power plant radiation alarm in detail with reference to the accompanying drawings and specific embodiments, wherein:
FIG. 1 provides a flow chart of one embodiment of a nuclear power plant radiation alarm suppression method of the present invention.
FIG. 2 provides a schematic diagram of one embodiment of a nuclear power plant radiation alarm suppression method of the present invention.
FIG. 3 provides a schematic diagram of one embodiment of a nuclear power plant radiation alarm suppression apparatus of the present invention.
FIG. 4 provides a schematic diagram of one embodiment of a nuclear power plant radiation alarm suppression system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantageous technical effects of the present invention clearer, the present invention is described in further detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 provides a method for suppressing a nuclear power plant radiation alarm, which specifically includes:
step 101, the nuclear power station radiation monitoring system sends monitoring result information to a nuclear power station digital control system DCS.
The nuclear power station radiation monitoring system monitors gamma dose rate and neutron dose rate in related areas of a control area through two monitoring means, and avoids workers from being irradiated by high dose: continuously monitoring the place with higher risk by using a fixed KRT channel; and carrying out periodic patrol survey on the control area by utilizing the portable KRT instrument. The method comprises the following steps that a nuclear power station radiation monitoring system KRT periodically sends monitoring result information to a nuclear power station digital control system DCS, and the monitoring result information comprises: normal result information and early warning information.
And 103, if the monitoring result information is early warning information, the DCS determines whether to execute warning operation according to a preset warning control state.
And if the DCS judges that the monitoring result information is early warning information, the DCS determines whether to execute the warning operation according to a preset warning control state.
And 105, if the alarm control state is the alarm suppression state, the DCS prohibits executing the alarm operation according to the early warning information.
In this embodiment, do not pass through the KRT junction box with DCS signal collection box and nuclear power station KRT signal processing case, but DCS signal collection box directly links to each other with nuclear power station KRT signal processing case.
The alarm suppression function is arranged at the tail end of the signal output of the equipment, the alarm suppression function can be moved backwards and is realized in a DCS, hardware suppression is changed into software suppression, and local suppression is changed into remote suppression. When the equipment needs to be maintained, a worker can remotely suppress the alarm signal in the main control room, so that the working time can be shortened, and the irradiated dose can be reduced.
Further, if the alarm control state is an alarm non-inhibition state, the DCS executes alarm operation according to the early warning information; or,
if the monitoring result information is non-early warning information and the alarm control state is an alarm non-inhibition state, the DCS does not execute alarm operation; or,
and if the monitoring result information is non-early warning information and the alarm control state is an alarm suppression state, the DCS does not execute the alarm operation.
The alarm control state is preset, so that whether alarm operation is executed or not is determined, a remote alarm suppression mechanism in the nuclear power station can be realized, an operator is prevented from being influenced by the irradiation dose to realize alarm suppression, and the requirement of safety protection of the nuclear power station is effectively met; meanwhile, only the hardware needs to be slightly changed, the remote alarm suppression is mainly realized in a software mode, the system does not need to be greatly changed, and the cost is low.
FIG. 2 provides a schematic diagram of one embodiment of a nuclear power plant radiation alarm suppression method, wherein:
alarm suppression is realized by adding alarm suppression logic in the DCS system. For example, KRT001MA secondary alarm, 037KA is the alarm signal finally displayed. A control button KRT001TO is added in a DCS display picture, a control signal Inhibit (alarm suppression state) and a De-Inhibit (alarm non-suppression state) of an alarm control state are in a mutual exclusion relation, when the DCS display picture normally operates, the De-Inhibit signal is 1, the output of an RS trigger is 1, and the state of 037KA is only controlled by the state of a KRT001MA secondary alarm signal; when the Inhibit signal is 1, the output of the RS trigger is 0, and the state of 037KA is forced to be 0 after passing through the AND gate, thereby realizing alarm suppression.
Referring to fig. 3 in combination, fig. 3 provides a schematic diagram of an embodiment of a nuclear power plant radiation alarm suppression device, which includes: a receiving module 301, a judging module 303, an alarm control module 305, and a setting module 307, wherein the setting module 307 is an optional module. Specifically, the method comprises the following steps:
the receiving module 301 is configured to receive monitoring result information sent by a nuclear power plant radiation monitoring system KRT;
a judging module 303, configured to judge monitoring result information sent by the KRT, and if the monitoring result information is early warning information, determine whether to execute an alarm operation according to an alarm control state preset by a setting module 307;
and the alarm control module 305 is configured to prohibit execution of an alarm operation according to the early warning information if the alarm control state is an alarm suppression state.
A setting module 307, configured to preset an alarm control state, where the alarm control state includes an alarm suppression state and an alarm non-suppression state.
Further, if the alarm control state is an alarm non-suppression state, the alarm control module 305 executes an alarm operation according to the early warning information; or,
if the monitoring result information is non-early warning information and the alarm control state is an alarm non-inhibition state, the alarm control module 305 does not execute the alarm operation; or
If the monitoring result information is non-warning information and the alarm control state is an alarm suppression state, the alarm control module 305 does not execute the alarm operation.
The alarm control state is preset, so that whether alarm operation is executed or not is determined, a remote alarm suppression mechanism in the nuclear power station can be realized, an operator is prevented from being influenced by the irradiation dose to realize alarm suppression, and the requirement of safety protection of the nuclear power station is effectively met; in addition, only small change is needed to be carried out on hardware, remote alarm suppression is mainly realized in a software mode, a system does not need to be greatly changed, the cost is low, and a good technical effect is achieved.
Referring now to fig. 4 in combination, fig. 4 provides a schematic diagram of an embodiment of a nuclear power plant radiation alarm suppression system, the nuclear power plant radiation alarm suppression system comprising: a nuclear power station radiation monitoring system 401 and a nuclear power station digital control system DCS 403. Specifically, the method comprises the following steps:
the nuclear power station radiation monitoring system 401 is configured to send monitoring result information to the nuclear power station digital control system 403;
and the nuclear power station digital control system DCS403 is used for determining whether to execute the alarm operation according to a preset alarm control state if the monitoring result information is the early warning information, and forbidding to execute the alarm operation according to the early warning information if the alarm control state is the alarm suppression state.
Further, the nuclear power plant digital control system DCS403 is further configured to preset an alarm control state, where the alarm control state includes an alarm suppression state and an alarm non-suppression state.
Further, if the alarm control state is an alarm non-inhibition state, the nuclear power station digital control system DCS403 executes an alarm operation according to the early warning information; or,
optionally, if the monitoring result information is non-early warning information and the alarm control state is an alarm non-suppression state, the nuclear power station digital control system DCS403 does not perform an alarm operation; or
Optionally, if the monitoring result information is non-early warning information and the alarm control state is an alarm suppression state, the nuclear power plant digital control system DCS403 does not perform the alarm operation.
For the implementation method and the process of the system, reference may be made to the method embodiments described in the foregoing embodiments, and details are not described here.
In combination with the above detailed description of the present invention, it can be seen that the present invention has at least the following advantageous technical effects over the prior art: by presetting the alarm control state, whether alarm operation is executed or not can be determined, a remote alarm suppression mechanism in the nuclear power station is realized, the condition that an operator needs to be influenced by the irradiation dose to realize alarm suppression is avoided, and the requirement of safety protection of the nuclear power station is effectively met; in addition, only small change is needed to be carried out on hardware, remote alarm suppression is mainly realized in a software mode, a system does not need to be greatly changed, the cost is low, and a good technical effect is achieved.
The present invention can be modified and adapted appropriately from the above-described embodiments, according to the principles described above. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (8)
1. A method for alarm suppression of nuclear power plant radiation, the method comprising:
the nuclear power station radiation monitoring system sends monitoring result information to a nuclear power station Digital Control System (DCS);
if the monitoring result information is early warning information, the DCS determines whether to execute warning operation according to a preset warning control state; the DCS is used for presetting an alarm control state, and the alarm control state comprises an alarm inhibition state and an alarm non-inhibition state;
and if the alarm control state is an alarm suppression state, the DCS prohibits executing alarm operation according to the early warning information.
2. The method of claim 1, further comprising:
and if the monitoring result information is early warning information and the alarm control state is an alarm non-inhibition state, the DCS executes alarm operation according to the early warning information.
3. The method of claim 1, further comprising:
and if the monitoring result information is non-early warning information and the alarm control state is an alarm non-inhibition state, the DCS does not execute alarm operation.
4. The method of claim 1, further comprising:
and if the monitoring result information is non-early warning information and the alarm control state is an alarm suppression state, the DCS does not execute alarm operation.
5. An alarm suppression device for nuclear power plant radiation, the device comprising:
the receiving module is used for receiving monitoring result information sent by the nuclear power station radiation monitoring system;
the judging module is used for judging the monitoring result information, and if the monitoring result information is early warning information, whether to execute alarm operation is determined according to a preset alarm control state;
the alarm control module is used for forbidding to execute alarm operation according to the early warning information if the alarm control state is an alarm suppression state;
the device comprises a setting module and a control module, wherein the setting module is used for presetting an alarm control state, and the alarm control state comprises an alarm suppression state and an alarm non-suppression state.
6. The apparatus of claim 5, wherein the alarm control module is further configured to:
if the alarm control state is an alarm non-inhibition state, executing alarm operation according to the early warning information; or,
if the monitoring result information is non-early warning information and the alarm control state is an alarm non-inhibition state, not executing alarm operation; or
And if the monitoring result information is non-early warning information and the alarm control state is an alarm suppression state, not executing alarm operation.
7. An alarm suppression system for nuclear power plant emissions, the system comprising:
the nuclear power station radiation monitoring system is used for sending monitoring result information to the nuclear power station digital control system;
the nuclear power station digital control system DCS is used for determining whether to execute alarm operation according to a preset alarm control state if the monitoring result information is early warning information, and forbidding to execute the alarm operation according to the early warning information if the alarm control state is an alarm suppression state; the nuclear power station digital control system DCS is also used for presetting an alarm control state, wherein the alarm control state comprises an alarm inhibition state and an alarm non-inhibition state.
8. The system of claim 7, wherein the nuclear power plant Digital Control System (DCS) is further configured to:
if the alarm control state is an alarm non-inhibition state, executing alarm operation according to the early warning information; or,
if the monitoring result information is non-early warning information and the alarm control state is an alarm non-inhibition state, not executing alarm operation; or
And if the monitoring result information is non-early warning information and the alarm control state is an alarm suppression state, not executing alarm operation.
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| JP2927629B2 (en) * | 1992-12-25 | 1999-07-28 | 核燃料サイクル開発機構 | Nuclear power plant accident management support system |
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