Large-scale sodium-cooled fast reactor DCS alarm method

Abstract

The invention belongs to the technical field of nuclear power plant instrument control and operation, and particularly relates to a large sodium-cooled fast reactor DCS alarm method. Comprising the following steps: step 1, alarm classification; step 2, process alarm; step 3, alarm management; step 4, alarm display; 5, an alarm calling mode is set; and 6, instrument control faults are set. The method has the beneficial effects that multiple alarm modes such as an alarm list, combined alarm and an alarm photon row are set to display the unit alarm state based on the power plant function zoning and grouping requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of instrumentation and control and operation of nuclear power plants, and in particular relates to a DCS alarm method for a large sodium-cooled fast reactor. Background Art

[0002] Alarms are one of the most core functions of a distributed control system (DCS). Through alarms, operators and maintenance personnel can understand fault alarms generated by processes and equipment throughout the entire system. The primary function of the alarm system is to issue visual or audible alarm signals to operators when undesirable or unsafe changes occur in nuclear power plant operating conditions, prompting them to closely monitor the situation and take appropriate measures. Advanced alarm systems should provide as much relevant information as possible about the development of the situation as well as the supporting information necessary to correct the nuclear power plant's operating status.

[0003] The rationality of the alarm function design is very important to avoid unnecessary alarms interfering with the operator's judgment of the unit status. Traditional alarm methods often only display the current alarm list and alarm display by system, which is not conducive to the operator to quickly locate important alarms. Summary of the Invention

[0004] The purpose of the present invention is to provide a DCS alarm method for a large sodium-cooled fast reactor, which reduces the interference of some alarms on the main control operator and does not affect the judgment and response of the operating personnel to important fault alarms. Based on the functional zoning and grouping requirements of the power plant, multiple alarm configurations such as alarm lists, combined alarms, and alarm photon rows are set.

[0005] The technical solution of the present invention is as follows: A large sodium-cooled fast reactor DCS fast reactor alarm method comprises the following steps:

[0006] Step 1: Alarm classification;

[0007] Step 2: Process alarm;

[0008] Step 3: Alarm management;

[0009] Step 4: Alarm display;

[0010] Step 5: Alarm calling method;

[0011] Step 6: Instrument and control failure.

[0012] In step 1, the alarm functions are divided into three categories, including process alarms, temporary variable monitoring, and instrumentation and control faults. Process alarms use offline configuration software to define alarm parameters, including analog alarm limits / alarm levels, switch alarm attributes, and alarm levels. Temporary variable monitoring is an alarm generated by the operator temporarily defining alarm parameters when the DCS system is running online. Instrumentation and control faults include fault information of equipment related to the instrumentation and control system.

[0013] The step 2 includes:

[0014] Step 21: Set up the alarm list as follows:

[0015] The process alarms are classified and managed according to the status and attributes of the alarm objects, specifically divided into: Red / Yellow / White / Green / Purple Alarm List: used to display alarms of five alarm levels respectively; Alarm Summary List: all alarms except suppression alarms, storage alarms, temporary variable monitoring and first-out alarms; Suppression Alarm Table: used to display all suppressed alarms; Test Alarm Table: alarms triggered when a device is in a test state should be displayed in the test alarm list; Storage Alarm Table: stored alarms disappear from the original list and are transferred to the storage alarm list; after cancellation, alarms are transferred from the storage alarm list to other corresponding alarm lists; Accident Diagnosis Alarm Table: some alarms are defined as accident diagnosis alarms; First-out Alarm Table: causes of the two safety action commands, shutdown and reactor shutdown, in chronological order of events, and identification of the initial causes of these actions;

[0016] Step 22: Alarm Variable Type

[0017] All input, communication and calculated variables can be used as objects for alarm monitoring;

[0018] Step 23: Analog alarm limit definition

[0019] For analog points, eight limit values can be defined: high 4 limit, high 3 limit, high 2 limit, high 1 limit, low 1 limit, low 2 limit, low 3 limit, and low 4 limit alarm. The legality of the limit values can be checked through the configuration software. The check conditions are: upper limit of range > high 4 limit > high 3 limit > high 2 limit > high 1 limit > low 1 limit > low 2 limit > low 3 limit > low 4 limit > lower limit of range;

[0020] Step 24: Analog alarm level definition

[0021] Define the corresponding alarm level for each analog alarm limit. The alarm level is divided into 5 levels. Different levels of alarm information are distinguished by different colors when displayed.

[0022] Step 25: Analog alarm recovery dead zone

[0023] The alarm recovery dead zone is the recovery range set for the alarm limit. When the signal value has recovered from the limit state to within the limit but is still within the dead zone, the alarm recovery will not be performed until it leaves the dead zone.

[0024] Step 26: Definition of switch alarm value

[0025] Switch value 0->1 alarm,

[0026] Step 27: Definition of switch alarm level

[0027] The definition of alarm level is the same as analog alarm level. Only one alarm level is defined for switch quantity. When defining, the alarm level of switch quantity signal jump and the alarm color to be displayed need to be set.

[0028] Step 28: Alarm Suppression Conditions

[0029] For each alarm of each database point, its alarm suppression condition can be defined. When the suppression condition switch value is 1, the suppression condition is established.

[0030] Step 29: Combined Alarm

[0031] Combined alarm refers to the alarm of an internal switch point, which has multiple trigger conditions. When any of the sub-conditions is met, the point will alarm;

[0032] Step 210: The number of combined alarm conditions, the maximum number of combined alarm conditions is 150;

[0033] Step 211: Alarm card and alarm association

[0034] For each analog limit alarm or switch alarm in the process alarm, a corresponding alarm card can be set. When an alarm occurs, the relevant alarm card can be called out in the alarm list.

[0035] The step 3 includes:

[0036] Step 31: Alarm occurs;

[0037] When the analog / switch quantity status meets the following alarm conditions:

[0038] (1) The analog value changes to exceed the alarm limit;

[0039] (2) The switch quantity changes to the set alarm state;

[0040] (3) Define the allowed alarms in the database;

[0041] (4) The point value is a valid collection value;

[0042] If the analog quantity meets the above three conditions (1), (3) and (4), an analog quantity alarm occurs. If the switch quantity meets the above three conditions (2), (3) and (4), a switch quantity alarm occurs. The alarm information is recorded in the log and the alarm information is recorded in the process alarm table.

[0043] Step 32: Alarm recovery

[0044] When an alarm occurs or is confirmed, the analog / switch value changes and does not meet the alarm conditions:

[0045] The switch state changes to the set non-alarm state; an alarm recovery message is generated and written into the process alarm table, overwriting the alarm message. After the alarm recovery message is confirmed, the alarm message is deleted and the alarm recovery message is recorded in the log;

[0046] Step 33: Alarm Delete

[0047] After the restored alarm information is confirmed, the alarm information will be deleted;

[0048] Step 34: Combined alarm occurs

[0049] The condition of the combined alarm is a combination of a series of physical switch quantities and intermediate switch quantities. If the condition is 1, it means the condition is met.

[0050] Step 35: Automatic Alarm Suppression

[0051] When the alarm suppression conditions are met: the alarm information that has occurred or been confirmed is transferred to the alarm suppression list, and the transferred alarm information is marked with a new time stamp. When the alarm suppression conditions are not met: the alarm information in the alarm suppression list is transferred to the alarm summary table and alarm sub-table, and the transferred alarm information is marked with a new time stamp.

[0052] Step 36: Restoring the alarm information in the suppression alarm table

[0053] When a suppressed alarm is restored, the alarm automatically disappears from the suppressed alarm list;

[0054] Step 37: Effect of Signal Validity on Alarm

[0055] After the alarm, the variable point becomes invalid, the point value is still in alarm, the alarm information is retained, and the display is marked with "invalid state"; after the alarm, the variable point becomes invalid, the point value becomes restored, the alarm information becomes restored information, and the display is marked with "invalid state". Before the alarm condition is met, the variable is invalid and the variable does not generate an alarm;

[0056] Step 38: Functional combination alarm

[0057] Function combination alarm means grouping multiple process alarms into a function combination alarm block according to equipment or operation function. This block corresponds to one function combination alarm. When the status of a single alarm information in the function combination changes, the combination alarm information is updated. By clicking the combination alarm name, all the alarm information contained in the combination alarm is displayed in the list.

[0058] Step 39: Function combination alarm priority

[0059] The color and flashing status of each function group alarm block depends on the color and status of the highest priority alarm among the single alarms triggered within the group.

[0060] The step 4 includes:

[0061] Step 41: Display management;

[0062] Step 42: Alarm operation group, divide the alarm into three operation groups: stack operation, machine operation and sodium operation;

[0063] Step 43: Alarm summary list button: an alarm summary list indicator button is placed on the interface to indicate the number of alarm information. The alarm summary list is called up through this button;

[0064] Step 44: Define alarm colors at each level

[0065] Step 45: Alarm Page

[0066] All types of alarm windows are divided into the following five parts: system alarm area; function combination alarm area; operation area; alarm display area; alarm list selection area;

[0067] Step 46: Information Statistics

[0068] Step 47: Alarm Information Area

[0069] It includes the alarm monitoring area and the alarm display area. The alarm monitoring area monitors the latest unconfirmed alarms. The alarm display area should be able to view all the alarm information in the system. Each alarm information occupies one line and is displayed in order of alarm occurrence / recovery time. The oldest information on the current screen is displayed at the bottom of the screen.

[0070] Step 48: Query the Management Button Area

[0071] Step 49: Alarm list information content

[0072] The alarm list information includes legend, time, real-time value of the source point, identification, alarm name, description, alarm limit type, and the operation group to which the variable belongs;

[0073] Step 410: Sound alarm;

[0074] Step 411: Silencing the alarm;

[0075] Step 412: Alarm recovery sound;

[0076] Step 413: Sound when the CRU is in monitoring mode;

[0077] Step 414: restrike of the combined alarm;

[0078] Step 415: Information display mode

[0079] Alarm display mode is divided into tracking and freezing. Tracking mode: display according to the alarm time label, the latest alarm is displayed at the first item in the list, and the display moves down line by line. When the screen is full, the bottom item moves out of the current screen, the displayed information automatically scrolls down, and then tracking continues; Freeze mode: click the "Freeze" button in tracking mode to switch to history mode display;

[0080] Step 416: Alarm query function

[0081] Set single query conditions and combined query conditions to filter and query alarm information;

[0082] Step 417: Alarm query conditions

[0083] Query information within a specified range using the following query conditions:

[0084] (1) Query by basic system;

[0085] (2) Query by alarm roll call;

[0086] (3) Query by start and end time;

[0087] (4) Query by alarm level;

[0088] (5) Query by partition;

[0089] (6) Combine multiple selection queries according to the above methods (1) to (6);

[0090] Step 418: Alarm query function is queried according to the basic system;

[0091] Step 419: Alarm query function queries by alarm name;

[0092] Step 420: Alarm query function queries by alarm level;

[0093] Step 421: Alarm query function query by area;

[0094] Step 422: Alarm query function query by status

[0095] Step 423: Alarm query function combination query;

[0096] Step 424: alarm operation function;

[0097] Provides the following operating functions for the alarm summary table: "Mute", "Line Confirm / Reset", "Page Confirm", "Page Reset", and "Alarm Card";

[0098] Step 425: Alarm operation function mute function;

[0099] After the alarm message appears, the alarm sound will be emitted. Press the "mute" button to mute it until a new alarm message appears again.

[0100] Step 426: confirm the alarm operation function;

[0101] Select a line of information from the alarm information area and click the "Line Confirm" button. After the alarm information is confirmed, the legend in front of the alarm information stops flashing; the restored alarm will be deleted after confirmation;

[0102] Step 427: Confirm the alarm operation function page;

[0103] Page confirmation is to confirm the alarm information in the current display screen range. Click the "Page Confirmation" button, and the operator needs to make a second confirmation. After the alarm information in the current display page is confirmed, the legend before the alarm information stops flashing;

[0104] Step 428: reset the alarm operation function page;

[0105] Step 429: Alarm operation function alarm card link function.

[0106] The step 5 comprises:

[0107] Step 51: The total alarm list on the alarm page is opened by the alarm total list indicator button in the page header. The indicator is displayed in the normal background color;

[0108] Step 52: First alarm on the alarm page. A first alarm button is set on the main panel to indicate whether there is a first alarm. Click the first alarm button to call up the first alarm interface.

[0109] Step 53: The red alarm list on the alarm page is opened by pressing the "R" button on the alarm indicator;

[0110] Step 54: Red alarm information content. The red alarm list is a subset of the alarm list. All information in the red alarm list is alarm or recovery information with an alarm level of red.

[0111] Step 55: The yellow alarm list on the alarm page is opened by the alarm indicator "Y" button;

[0112] Step 56: Yellow alarm information content. The yellow alarm list is a subset of the alarm list. All information in the yellow alarm list is alarm or recovery information with an alarm level of yellow.

[0113] Step 57: The white alarm list on the alarm page is opened by the alarm indicator "W" button;

[0114] Step 58: White alarm information content. The white alarm list is a subset of the alarm list. All information in the white alarm list is alarm or recovery information with an alarm level of white.

[0115] Step 59: The green alarm list on the alarm page is opened by the alarm indicator "G" button;

[0116] Step 510: Green alarm information content. The green alarm list is a subset of the alarm list. All information in the green alarm list is alarm or recovery information with an alarm level of green.

[0117] Step 511: The purple alarm list on the alarm page is opened by pressing the alarm indicator "M" button;

[0118] Step 512: Purple alarm information content. The purple alarm list is a subset of the alarm list. All information in the purple alarm list is alarm or recovery information with an alarm level of purple.

[0119] Step 513: Alarm suppression list on the alarm page;

[0120] Step 514: alarm suppression list display, query, and operation;

[0121] Step 515: alarm page alarm storage list;

[0122] Step 516: Test alarm list on alarm page;

[0123] Step 517: alarm page accident diagnosis alarm list;

[0124] Step 518: Overhaul the alarm list on the alarm page;

[0125] Step 519: Function combination alarm;

[0126] Step 520: Alarm operation function printing function.

[0127] The step 6 includes:

[0128] Step 61: I&C Fault Definition

[0129] Device type variables are used as objects for I&C fault monitoring. Use the configuration tool to assign one or more attributes to each device variable.

[0130] Step 62: Instrument and control fault monitoring objects. All equipment in the DCS system are objects of instrument and control fault monitoring.

[0131] Step 63: Instrument and control fault configuration requirements;

[0132] Step 64: I&C troubleshooting requirements;

[0133] Step 65: 1I&C Button;

[0134] Step 66: I&C fault list, opened via the "I&C" button on the page header;

[0135] Step 67: I&C fault list information content, saves I&C fault information and recovery information, each information consists of several fields;

[0136] Step 68: I&C fault list display mode;

[0137] Step 69: I&C fault list operation function print;

[0138] Step 610: I&C fault list operation function fault confirmation;

[0139] Step 611: I&C fault information query;

[0140] Step 612: I&C equipment fault query fault query condition display;

[0141] Step 613: I&C fault query combination query.

[0142] The beneficial effects of the present invention are as follows: based on the functional zoning and grouping requirements of the power plant, multiple alarm modes such as alarm list, combined alarm, alarm photon row, etc. are set to display the alarm status of the unit. DETAILED DESCRIPTION

[0143] The present invention is further described in detail below with reference to specific embodiments.

[0144] A large sodium-cooled fast reactor DCS fast reactor alarm method comprises the following steps:

[0145] Step 1: Alarm classification

[0146] The alarm functions are divided into three categories: process alarm, temporary variable monitoring, and instrumentation failure.

[0147] Process alarms are defined using offline configuration software to define alarm parameters, including analog alarm limits / alarm levels, switch alarm attributes and alarm levels. When the DCS system is online, it determines and processes alarms based on the configured alarm parameters. Alarms generated in this way are called process alarms.

[0148] Temporary variable monitoring refers to the alarm generated by the operator temporarily defining alarm parameters when the DCS system is running online.

[0149] I&C faults include fault information of equipment related to the I&C system.

[0150] Step 2: Process Alarm

[0151] Step 21: Set up the alarm list as follows:

[0152] The process alarms are classified and managed according to the status and properties of the alarm objects, specifically divided into: red / yellow / white / green / purple alarm lists: used to display alarms of five alarm levels respectively.

[0153] Alarm summary table: All alarms except suppression alarms, storage alarms, variable temporary monitoring and first-out alarms.

[0154] Suppressed alarm table: used to display all suppressed alarms. The appearance and disappearance of suppressed alarms do not require confirmation by the operator.

[0155] Test alarm list: Alarms triggered when a device is in a test state should be displayed in the test alarm list (when displayed in other alarm lists, corresponding identifiers should be added), and the system automatically handles them without engineering design.

[0156] Storage alarm table: The operator can store alarms, and the stored alarms will disappear from the original list and be transferred to the storage alarm list; the operator can also cancel the storage of alarms, and after cancellation, the alarms will be transferred from the storage alarm list to other corresponding alarm lists; only alarms confirmed by the operator are allowed to be stored.

[0157] Accident Diagnosis Alarm List: Some alarms are defined as accident diagnosis alarms. When such alarms occur, the operator should immediately identify and invoke diagnostic procedures. Therefore, an accident diagnosis alarm list is set up. Accident diagnosis alarms cannot be suppressed or stored.

[0158] Overhaul alarm list: During overhaul, some important alarms require the operator's special attention, so an overhaul alarm list is set. These alarms are displayed in this list only under overhaul conditions. This alarm list is not available under other conditions. Under any conditions, overhaul alarms need to be displayed in other corresponding lists according to their attributes.

[0159] First-out Alarm List: This list provides the operator with a chronological list of the causes that led to the safety actions of trip and shutdown, identifying the initial causes of these actions. The first-out alarm list is intended for informational purposes only and does not require any operator action. The presence of first-out alarms, the presence of non-first-out alarms, and the disappearance of alarms are displayed in different colors.

[0160] Step 22: Alarm Variable Type

[0161] All variables generated by input, communication and calculation of the system can be used as objects of alarm monitoring.

[0162] Step 23: Analog alarm limit definition

[0163] For analog points, eight limit values can be defined, including high 4 limit, high 3 limit, high 2 limit, high 1 limit, low 1 limit, low 2 limit, low 3 limit, and low 4 limit alarm. The legality of the limit values can be checked through the configuration software. The inspection conditions are: upper limit of range > high 4 limit > high 3 limit > high 2 limit > high 1 limit > low 1 limit > low 2 limit > low 3 limit > low 4 limit > lower limit of range.

[0164] Step 24: Analog alarm level definition

[0165] The corresponding alarm level can be defined for each analog alarm limit. The alarm level is divided into 5 levels. Different levels of alarm information are distinguished by different colors (red, yellow, white, green, purple) when displayed. The alarm level is also used as a condition for filtering and querying alarm information.

[0166] Step 25: Analog alarm recovery dead zone

[0167] The alarm recovery dead zone is the recovery range set for the alarm limit. When the signal value has recovered from the limit-out state to within the limit but is still within the dead zone, the alarm recovery will not be performed until it leaves the dead zone. The alarm recovery event is generated. The dead zone judgment is used to avoid frequent alarm / alarm recovery information when the signal value is near the limit.

[0168] Step 26: Definition of switch alarm value

[0169] Switch value 0->1 alarm.

[0170] Step 27: Definition of switch alarm level

[0171] The definition of alarm level is the same as that of analog alarm level. For switch quantity, only one alarm level needs to be defined. When defining, the alarm level of switch quantity signal jump needs to be set, that is, the alarm color to be displayed.

[0172] Step 28: Alarm Suppression Conditions

[0173] For each alarm at each database point, you can define an alarm suppression condition. The suppression condition is a Boolean value, such as an external acquisition switch value or an internal switch value. When using an external switch value or an internal switch value as a suppression condition, simply set the value of the external switch value or internal switch value as the suppression condition.

[0174] When the suppression condition switch value is 1, the suppression condition is met.

[0175] There are five general inhibition principles:

[0176] (1) Operating condition suppression (or operating mode / sub-mode);

[0177] (2) Suppression under specific operating conditions;

[0178] (3) Related equipment / system status suppression;

[0179] (4) Alarm cause / consequence suppression;

[0180] (5) Alarm redundancy suppression.

[0181] The suppression condition of an alarm is the result of "OR" of the above five types of suppression principles.

[0182] When an alarm signal is in the suppressed, invalid, test, isolated or stored state, other alarms cannot be suppressed.

[0183] The operator can select the alarm suppression principle online, that is, the operator can select one or more alarm suppression principles, or choose not to apply alarm suppression. The suppression principle setting can be achieved through the submenu under "System" in the header.

[0184] Step 29: Combined Alarm

[0185] A combined alarm refers to an alarm at an internal switch point with multiple trigger conditions. When any of the sub-conditions is met, the point will alarm.

[0186] Combined alarms can effectively reduce the number of alarms.

[0187] Combined alarm configuration process: Use internal calculation tools to assign the calculation results of each monitoring condition to internal switch quantities; and associate these switch quantities with combined alarm points.

[0188] Step 210: Combine the number of alarm conditions

[0189] The maximum number of combined alarm conditions is 150.

[0190] Step 211: Alarm card and alarm association

[0191] For each analog limit alarm or switch alarm in the process alarm, a corresponding alarm card can be set. When an alarm occurs, the relevant alarm card can be called out in the alarm list.

[0192] The alarm card contains the cause of the alarm, the required operations and the consequences, etc. It is a procedural document for analyzing alarms and guiding operations.

[0193] Step 3: Alarm Management

[0194] Step 31: Alarm occurs

[0195] When the analog / switch quantity status meets the following alarm conditions:

[0196] (1) The analog value changes to exceed the alarm limit;

[0197] (2) The switch quantity changes to the set alarm state;

[0198] (3) Define the allowed alarms in the database;

[0199] (4) The point value is a valid collection value;

[0200] If the analog quantity meets the above three conditions (1), (3), and (4), the system will generate an analog quantity alarm occurrence information; if the switch quantity meets the above three conditions (2), (3), and (4), the system will generate a switch quantity alarm occurrence information; the alarm information is recorded in the log. The alarm information is recorded in the process alarm table.

[0201] Step 32: Alarm recovery

[0202] When an alarm occurs or is confirmed, the analog / switch value changes and does not meet the alarm conditions:

[0203] The analog value returns to the limit, and dead zone processing is taken into account. Dead zone processing must support percentages and specific values;

[0204] The switch state changes to the set non-alarm state;

[0205] The system generates an alarm recovery message and writes it into the process alarm table, overwriting the alarm information. After the alarm recovery message is confirmed, the alarm information is deleted.

[0206] Alarm recovery information is recorded in the log.

[0207] Step 33: Alarm Delete

[0208] After the restored alarm information is confirmed, the alarm information will be deleted;

[0209] Step 34: Combined alarm occurs

[0210] The conditions for the combined alarm can be a combination of a series of physical switch quantities and intermediate switch quantities. A condition of 1 indicates that the condition is met.

[0211] When one of the conditions of the combination alarm is met, and the combination alarm has not occurred before, the combination alarm is triggered, the display status is fast flashing, and the alarm level character does not flash;

[0212] When a combination alarm has been triggered but not confirmed, if another condition of the combination alarm is met, the alarm indicator will still flash, but the time scale will change;

[0213] When a combination alarm has been triggered and confirmed, if another condition of the combination alarm is met, the combination alarm will flash again and change the time scale; when all the conditions of a combination alarm disappear, the combination alarm will return to slow flashing.

[0214] The occurrence, confirmation, recovery and disappearance of the combined alarm are recorded in the alarm log.

[0215] Step 35: Automatic Alarm Suppression

[0216] When the alarm suppression conditions are met: the alarm information that has occurred or been confirmed is transferred to the alarm suppression list, and the transferred alarm information is marked with a new time stamp.

[0217] When the alarm suppression conditions are not met: the alarm information in the alarm suppression list is transferred to the alarm summary table and the alarm sub-table, and the transferred alarm information is marked with a new time stamp.

[0218] Step 36: Restoring the alarm information in the suppression alarm table

[0219] When a suppressed alarm is restored, the alarm automatically disappears from the suppressed alarm list and does not appear in the alarm summary table.

[0220] Step 37: Effect of Signal Validity on Alarm

[0221] After the alarm, the variable point becomes invalid, the point value is still an alarm, the alarm information is retained, and the display is marked with "invalid state".

[0222] After the alarm, the variable point becomes invalid and the point value becomes restored. The alarm information becomes recovery information and the "invalid state" mark is added to the display.

[0223] Before the alarm condition is met, if the variable is invalid, no alarm will be generated for the variable.

[0224] Step 38: Functional combination alarm

[0225] Functional combination alarm is a way to optimize the alarm management system. Functional combination alarm refers to grouping multiple process alarms into a functional combination alarm block according to the equipment or operation function. The block corresponds to a functional combination alarm. When a single alarm information state in the functional combination

[0226] When the combined alarm information changes, it will be updated. By clicking on the combined alarm name, all the alarm information contained in the combined alarm will be displayed in the list.

[0227] Step 39: Function combination alarm priority

[0228] The color and flashing status of each function combination alarm block depends on the color and status of the highest priority alarm among the single alarms triggered in the group. The priority of the single alarm information is as follows from high to low:

[0229] Priority 1: Purple alarm;

[0230] Priority 2: Green alarm;

[0231] Priority 3: Red Alarm;

[0232] Priority 4: Yellow alarm;

[0233] Priority 5: White alarm.

[0234] If no alarm is triggered within the function combination, the normal status is displayed.

[0235] The status priority order of alarms of the same level is:

[0236] Priority 1: Flash;

[0237] Priority 2: Flat light;

[0238] Priority 3: Slow flash.

[0239] Step 4: Alarm display

[0240] Step 41: Display Management

[0241] The display part includes: alarm summary table indicator.

[0242] Indicator / Legend flashing status description:

[0243] Fast flashing (frequency 2Hz) means: unconfirmed alarm;

[0244] Slow flashing (frequency 0.5Hz) means: the alarm is restored.

[0245] The alarm information is displayed on the alarm page and will only be displayed when the operator opens the corresponding alarm page.

[0246] Step 42: Alarm Operation Group

[0247] The alarms can be divided into three operating groups: stack operation, machine operation and sodium operation.

[0248] Step 43: Alarm Summary Button

[0249] An alarm summary indicator button needs to be placed on the interface.

[0250] Indicates the number of alarm messages. ∑=R+Y+W+G+M.

[0251] Use this button to call up the alarm list.

[0252] Step 44: Define alarm colors at each level

[0253] Color codes for each level of alarm:

[0254] R(255,0,0)

[0255] Y(255,255,0)

[0256] W(255,255,255)

[0257] G(0,200,0)

[0258] M(255,0,255)

[0259] Step 45: Alarm Page

[0260] All types of alarm windows are divided into the following five parts:

[0261] System alarm area;

[0262] Function combination alarm area;

[0263] Operation area;

[0264] Alarm display area: This area is implemented using a scroll bar;

[0265] Alarm list selection area;

[0266] The alarm interface should have the function of hiding and displaying the system alarm area and the function combination alarm area, and have an indication of the normal operation of the alarm system (i.e. self-diagnosis).

[0267] Step 46: Information Statistics

[0268] The page should be able to indicate the total number of alarm messages in the current list and the number of messages in each status (New, Acknowledged, Cleared).

[0269] Step 47: Alarm Information Area

[0270] The system should include an alarm monitoring area and an alarm display area. The alarm monitoring area should always monitor the latest unconfirmed alarms in the system and operators cannot operate in this area. The alarm display area should be able to view all alarm information in the system, with each alarm information occupying one line and displayed in order of alarm occurrence / recovery time, with the oldest information currently on the screen displayed at the bottom of the screen.

[0271] Step 48: Query the Management Button Area

[0272] Each alarm table has its own button area.

[0273] Step 49: Alarm list information content

[0274] The alarm list information consists of the following information:

[0275] Legend: Located at the front of each alarm message, it identifies the alarm level and status of the alarm message: fast flashing legend (frequency 2Hz) indicates unconfirmed alarm, static legend display indicates confirmed alarm, slow flashing legend (frequency 0.5Hz) indicates alarm recovery.

[0276] Time: The time precision is displayed in milliseconds, and the format is: YYYY-MM-DD HH:mm:ss.mmm;

[0277] Real-time value of source point;

[0278] Identification: such as signs indicating hanging, invalid status, accident procedures, etc.

[0279] Alarm name;

[0280] Description: description information corresponding to the alarm name;

[0281] Alarm limit type: such as H1, H2, L1, L2, True, False, etc.;

[0282] The runtime group to which the variable belongs (region ID)

[0283] Step 410: Sound alarm

[0284] The alarm sound is not limited by the operation group monitored by OWP. When any alarm arrives or is restored, the main control room speaker will emit a corresponding sound.

[0285] All OWPs can be muted. After muting, the sound stops.

[0286] After the alarm recovery message appears, a sound is also emitted. The sounds emitted by the alarm message and the alarm recovery message are different.

[0287] Step 411: Silencing the alarm

[0288] For recovery alarms, the operator can mute the sound by pressing the mute button, or the sound can disappear automatically after a certain time interval. This time period can be configured on the configuration engineer station.

[0289] Step 412: Alarm recovery sound

[0290] For different alarms, only one sound prompt is needed when the alarm disappears, and it will automatically stop sounding after a certain period of time; it can also be manually muted.

[0291] Step 413: Sound when CRU is in monitoring mode

[0292] When switching to the backup disk (BUP), the alarm cannot be confirmed when the power plant computer information and control system (CRU) is in browsing mode, the status remains the real status, and the sound is disabled.

[0293] Step 414: Re-flashing of the combined alarm

[0294] illustrate:

[0295] 1) In the initial state, when all the combined alarm sub-conditions are 0, the combined alarm will not be generated;

[0296] 2) When at least one of the sub-conditions is 1, and the combined alarm has not occurred before, the combined alarm is triggered and the alarm is highlighted and flashes quickly;

[0297] 3) After the combined alarm is confirmed, the alarm is displayed in plain light;

[0298] 4) When a sub-condition that has not been triggered before is 1, the alarm will be highlighted and flash quickly;

[0299] If the combined alarm is confirmed at this time, the alarm will be flat; if the sub-conditions of the confirmed combined alarm (the sub-conditions of steps 3 and 4) are 0, the alarm will flash slowly;

[0300] If the combination alarm is not confirmed at this time, the alarm will flash quickly after the sub-conditions of the previously confirmed combination alarm (the sub-conditions of step 3) are 0; the alarm will flash slowly after the sub-conditions of the unconfirmed combination alarm (the sub-conditions of step 4) are all 0; if confirmed again, the alarm will turn flat.

[0301] There is no new sub-condition alarm and the status has not changed, so there is no need to set a new time stamp.

[0302] Step 415: Information display mode

[0303] The alarm display mode is divided into two modes: tracking and freezing. Regardless of the previous operating status, as long as you switch to the alarm monitoring screen, the tracking mode is implicitly selected. You can also switch to tracking mode in the freezing mode.

[0304] Tracking mode display:

[0305] In tracking mode, the alarms are displayed according to their time tags, with the latest alarm displayed first in the list and moving down line by line. When the screen is full, the bottom alarm is removed from the current screen, the displayed information automatically scrolls down, and then tracking continues.

[0306] Freeze mode display:

[0307] In the tracking mode, click the "Freeze" button to switch to the history mode display. In the freeze mode, new fault information will no longer be included in the list display, and the previous information can be viewed.

[0308] Step 416: Alarm query function

[0309] You can set single query conditions and combined query conditions to filter and query alarm information. The system should indicate whether the currently displayed alarm is the result of alarm filtering, and the alarm query conditions should be displayed.

[0310] Step 417: Alarm query conditions

[0311] The operator can query information within a specified range according to the following query conditions:

[0312] (1) Query by basic system;

[0313] (2) Query by alarm name (supports fuzzy query);

[0314] (3) Query by start and end time;

[0315] (4) Query by alarm level;

[0316] (5) Query by partition;

[0317] (6) Combine the multiple-select queries in the manner of (1) to (6) above.

[0318] All query conditions are cleared each time the alarm page is reopened or other alarm lists are called up.

[0319] Step 418: Alarm query function - query by basic system

[0320] The interface provides a "System" button for implementing basic system query functions.

[0321] Select the basic system name in the "Basic System" list and click the left mouse button. The basic system name is selected. After the selection is completed, click "OK" and the page will automatically close. With the check box selected, click the query button and the alarm information area will display the alarm or recovery information of the selected basic system.

[0322] When you query again, the system automatically records and displays the last query conditions.

[0323] The system provides three text boxes for basic system queries.

[0324] Step 419: Alarm query function - query by alarm name

[0325] The interface provides an "alarm name" input box and a "query" button for querying by name, and supports fuzzy query.

[0326] When you query again, the system automatically records and displays the last query conditions.

[0327] Step 420: Alarm query function - query by alarm level

[0328] The system can support query functions according to 5 alarm levels.

[0329] When you query again, the system automatically records and displays the last query conditions.

[0330] Step 421: Alarm query function - query by area

[0331] The system provides query buttons for 3 areas.

[0332] Under default conditions, all buttons are in the lifted state, and the alarm information area displays the alarm or recovery information of all areas. The operator can select a button or several buttons to display the alarm or recovery information of the corresponding one or several areas in the alarm information area, and the selected button is in the pressed state.

[0333] When the check box is selected, the area query will take effect. When you query again, the system will automatically record and display the last query conditions.

[0334] Step 422: Alarm query function - query by status

[0335] The system provides query function based on alarm status, including three types: unconfirmed alarm, confirmed alarm, and restored alarm.

[0336] The operator can select one or several states for alarm query, and the alarm information area will display the information of the selected alarm state.

[0337] Step 423: Alarm query function - combined query

[0338] The system supports the combination of the above five query conditions for query, and the alarm or recovery information that meets all the conditions can be queried at the operator station.

[0339] Step 424: Alarm operation function

[0340] The system provides the following operating functions for the alarm summary table: "Mute", "Row Confirm / Reset", "Page Confirm", "Page Reset", and "Alarm Card".

[0341] Not all users at all operation levels have the authority to operate the buttons in this area. The system will automatically determine whether the currently logged-in user has the authority to operate based on the user's level. If the user does not have the authority, the button will be gray and invalid.

[0342] Step 425: Alarm operation function - silencing function

[0343] After the alarm message appears, an alarm sound is emitted. The operator can silence the sound by pressing the "mute" button until a new alarm message appears again.

[0344] Step 426: Alarm operation function - line confirmation function

[0345] Select a line of information from the alarm information area and click the "Line Confirm" button. After the alarm information is confirmed, the legend in front of the alarm information stops flashing; the restored alarm is deleted after confirmation.

[0346] Confirm that the operation is recorded in the log line.

[0347] Step 427: Alarm operation function - page confirmation function

[0348] Page confirmation is to confirm the alarm information in the current display screen. Click the "Page Confirmation" button, the operator needs to make a second confirmation, after the alarm information in the current display page is confirmed, the legend before the alarm information stops flashing;

[0349] The page confirmation operation is recorded in the log, and there is a separate log message for each confirmed alarm record.

[0350] Step 428: Alarm operation function - page reset function

[0351] Confirm all recovery information on the current page. A second confirmation is required.

[0352] Step 429: Alarm operation function - alarm card link function

[0353] Select a line of information from the alarm information area to call up the alarm card corresponding to the alarm point.

[0354] Step 5: Alarm call method

[0355] Step 51: Alarm Page - Total Alarm List

[0356] The alarm summary indicator button in the header is turned on and the indicator is displayed with the normal background color.

[0357] Step 52: Alarm Page - First Alarm

[0358] The main panel is equipped with a first-out alarm button to indicate whether there is a first-out alarm. Click the first-out alarm button to call up the first-out alarm interface.

[0359] Step 53: Alarm Page - Red Alarm List

[0360] Open via the alarm indicator "R" button.

[0361] Step 54: Red Alarm Information Content

[0362] The red alarm list is a subset of the alarm list. All the information in the red alarm list is alarm or recovery information with an alarm level of red.

[0363] Step 55: Alarm Page - Yellow Alarm List

[0364] Open via the alarm indicator "Y" button.

[0365] Step 56: Yellow Alarm Information Content

[0366] The yellow alarm list is a subset of the total alarm list. All information in the yellow alarm list is alarm or recovery information with an alarm level of yellow.

[0367] Step 57: Alarm Page - White Alarm List

[0368] The alarm indicator is turned on by pressing the "W" button.

[0369] Step 58: White Alarm Information Content

[0370] The white alarm list is a subset of the total alarm list. All information in the white alarm list is alarm or recovery information with an alarm level of white.

[0371] Step 59: Alarm Page - Green Alarm List

[0372] Open via alarm indicator "G" button.

[0373] Step 510: Green alarm information content

[0374] The green alarm list is a subset of the alarm list. All information in the green alarm list is alarm or recovery information with an alarm level of green.

[0375] Step 511: Alarm Page - Purple Alarm List

[0376] Open via the alarm indicator "M" button.

[0377] Step 512: Purple alarm information content

[0378] The purple alarm list is a subset of the total alarm list. All information in the purple alarm list is alarm or recovery information with an alarm level of purple.

[0379] Step 513: Alarm Page - Alarm Suppression List

[0380] Open the alarm suppression list via the corresponding button.

[0381] Step 514: Alarm suppression list display, query, and operation

[0382] The display is in the form of a general table. The information content is displayed in the same way as the alarm summary table, and the operation area is not confirmed. The query method is basically the same as the alarm summary table, except that there is no query by alarm status.

[0383] The first column of the display interface is the alarm level legend, including: R, Y, W, G, M.

[0384] Step 515: Alarm page - alarm storage list

[0385] Open the alarm storage list via the corresponding button.

[0386] Step 516: Alarm Page - Test Alarm List

[0387] Open the test alarm list via the corresponding button.

[0388] Step 517: Alarm page - accident diagnosis alarm list

[0389] Open the accident diagnosis alarm list by clicking the corresponding button.

[0390] Step 518: Alarm Page - Overhaul Alarm List

[0391] Open the overhaul alarm list via the corresponding button

[0392] Step 519: Function combination alarm

[0393] Open the function combination alarm interface through the corresponding button.

[0394] Step 520: Alarm operation function - print function

[0395] Provides alarm printing function, which includes "Start" and "Stop" function buttons.

[0396] Step 6: Instrumentation and Control (I&C) Failure

[0397] Step 61: I&C Fault Definition

[0398] The variables of the device type defined by the system are used as the objects of I&C fault monitoring, and one or more attributes (referred to as F fault) are assigned to each device variable using the configuration tool.

[0399] Step 62: Instrument and control fault monitoring object

[0400] All equipment in the DCS system is subject to instrumentation and control fault monitoring.

[0401] Step 63: Instrument and control fault configuration requirements

[0402] Engineers do not need to configure I&C fault attributes and alarm level parameters.

[0403] Step 64: I&C Troubleshooting Requirements

[0404] The I&C fault list contains fault occurrence information and recovery information. After a fault occurs, a fault row information is generated in the I&C fault list, and the legend in the row information flashes at 2Hz. After confirmation, the legend stops flashing. After the fault disappears, the indicator flashes at 0.5Hz. After confirmation, the fault row information is deleted from the I&C fault table.

[0405] Step 65: 1I&C Button

[0406] The I&C fault indicator shows the number of faults in the I&C fault list (including unconfirmed, confirmed, and disappeared but not reset faults). The fault type "I&C" is displayed on the left, and the number of faults is displayed on the right, with a maximum of four digits displayed. When there is unconfirmed fault information in the I&C fault list, the indicator flashes quickly; when all fault information in the I&C fault list is confirmed, the indicator background is displayed flat; when all I&C faults have disappeared, the I&C fault indicator flashes slowly. After all the slow flashing states are confirmed, the I&C fault indicator is displayed flat with a normal color background, and the count is 0. Click this indicator to enter the I&C fault list. The instrumentation and control fault indicator on the header is "I&C", and the color is defined as orange RGB (255 / 144 / 17).

[0407] Step 66: I&C Fault List

[0408] It can be opened via the "I&C" button in the header.

[0409] Operators and maintenance levels monitor I&C faults, display I&C fault information and recovery information, and can confirm and reset I&C faults;

[0410] Users of other levels can monitor the instrumentation and control fault information and recovery information displayed in the instrumentation and control fault list, but cannot confirm or reset instrumentation and control faults.

[0411] Step 67: I&C Fault List Information Content

[0412] Saves I&C fault information and recovery information. Each piece of information consists of several fields:

[0413] Fault status legend: Located at the front of each fault message, it identifies the type and status of the fault message. A fast flashing legend (2 Hz frequency) indicates an unconfirmed arrival fault, a flat display indicates a confirmed arrival fault, and a slow flashing legend (0.5 Hz frequency) indicates an unreset recovery fault.

[0414] Step 68: I&C Fault List Display Mode

[0415] The display mode is divided into tracking mode and freezing mode, and the specific form is the same as the process alarm.

[0416] Step 69: I&C Fault List Operation Function - Print

[0417] Press the "Print" button to choose to output one or more screens of content starting from the current screen to a text printer.

[0418] Step 610: I&C fault list operation function - fault confirmation

[0419] The I&C fault confirmation operation method is the same as the alarm summary table, including row / page confirmation operation.

[0420] The confirmation operation is performed by the operator or maintenance engineer.

[0421] Step 611: I&C fault information query

[0422] Fault information can be filtered and queried by single conditions and combined conditions.

[0423] Supports query by basic system, roll call, and time.

[0424] Step 612: I&C equipment fault query - fault query condition display

[0425] The interface information should indicate whether the currently displayed fault is the result of filtering, and the query conditions should indicate it. When printing, the query conditions should be printed.

[0426] Step 613: I&C Fault Query - Combined Query

[0427] The system supports multiple query condition combinations for querying, and the fault or recovery information that meets all the conditions can be queried at the operator station.

Claims

1. A large sodium-cooled fast reactor DCS fast reactor alarm method, characterized in that: The steps include: Step 1: Alarm classification; Step 2: Process alarm; Step 3: Alarm management; Step 4: Alarm display; Step 5: Alarm calling method; Step 6: Instrument and control failure.

2. A large sodium-cooled fast reactor DCS fast reactor alarm method according to claim 1, characterized in that: In step 1, the alarm functions are divided into three categories, including process alarms, temporary variable monitoring, and instrumentation and control faults. Process alarms use offline configuration software to define alarm parameters, including analog alarm limits / alarm levels, switch alarm attributes, and alarm levels. Temporary variable monitoring is an alarm generated by the operator temporarily defining alarm parameters when the DCS system is running online. Instrumentation and control faults include fault information of equipment related to the instrumentation and control system.

3. A large sodium-cooled fast reactor DCS fast reactor alarm method according to claim 1, characterized in that: The step 2 includes: Step 21: Set up the alarm list as follows: The process alarms are classified and managed according to the status and attributes of the alarm objects, specifically divided into: Red / Yellow / White / Green / Purple Alarm List: used to display alarms of five alarm levels respectively; Alarm Summary List: all alarms except suppression alarms, storage alarms, temporary variable monitoring and first-out alarms; Suppression Alarm Table: used to display all suppressed alarms; Test Alarm Table: alarms triggered when a device is in a test state should be displayed in the test alarm list; Storage Alarm Table: stored alarms disappear from the original list and are transferred to the storage alarm list; after cancellation, alarms are transferred from the storage alarm list to other corresponding alarm lists; Accident Diagnosis Alarm Table: some alarms are defined as accident diagnosis alarms; First-out Alarm Table: causes of the two safety action commands, shutdown and reactor shutdown, in chronological order of events, and identification of the initial causes of these actions; Step 22: Alarm Variable Type All input, communication and calculated variables can be used as objects for alarm monitoring; Step 23: Analog alarm limit definition For analog points, eight limit values can be defined: high 4 limit, high 3 limit, high 2 limit, high 1 limit, low 1 limit, low 2 limit, low 3 limit, and low 4 limit alarm. The legality of the limit values can be checked through the configuration software. The check conditions are: upper limit of range > high 4 limit > high 3 limit > high 2 limit > high 1 limit > low 1 limit > low 2 limit > low 3 limit > low 4 limit > lower limit of range; Step 24: Analog alarm level definition Define the corresponding alarm level for each analog alarm limit. The alarm level is divided into 5 levels. Different levels of alarm information are distinguished by different colors when displayed. Step 25: Analog alarm recovery dead zone The alarm recovery dead zone is the recovery range set for the alarm limit. When the signal value has recovered from the limit state to within the limit but is still within the dead zone, the alarm recovery will not be performed until it leaves the dead zone. Step 26: Definition of switch alarm value Switch value 0->1 alarm, Step 27: Definition of switch alarm level The definition of alarm level is the same as analog alarm level. Only one alarm level is defined for switch quantity. When defining, the alarm level of switch quantity signal jump and the alarm color to be displayed need to be set. Step 28: Alarm Suppression Conditions For each alarm of each database point, its alarm suppression condition can be defined. When the suppression condition switch value is 1, the suppression condition is established. Step 29: Combined Alarm Combined alarm refers to the alarm of an internal switch point, which has multiple trigger conditions. When any of the sub-conditions is met, the point will alarm; Step 210: The number of combined alarm conditions, the maximum number of combined alarm conditions is 150; Step 211: Alarm card and alarm association For each analog limit alarm or switch alarm in the process alarm, a corresponding alarm card can be set. When an alarm occurs, the relevant alarm card can be called out in the alarm list.

4. A large sodium-cooled fast reactor DCS fast reactor alarm method according to claim 1, characterized in that: The step 3 includes: Step 31: Alarm occurs; When the analog / switch quantity status meets the following alarm conditions: (1) The analog value changes to exceed the alarm limit; (2) The switch quantity changes to the set alarm state; (3) Define the allowed alarms in the database; (4) The point value is a valid collection value; If the analog quantity meets the above three conditions (1), (3), and (4), an analog quantity alarm occurs. If the switch quantity meets the above three conditions (2), (3), and (4), a switch quantity alarm occurs. The alarm information is recorded in the log and the alarm information is recorded in the process alarm table. Step 32: Alarm recovery When an alarm occurs or is confirmed, the analog / switch value changes and does not meet the alarm conditions: The switch state changes to the set non-alarm state; an alarm recovery message is generated and written into the process alarm table, overwriting the alarm message; after the alarm recovery message is confirmed, the alarm message is deleted and the alarm recovery message is recorded in the log; Step 33: Alarm Delete After the restored alarm information is confirmed, the alarm information will be deleted; Step 34: Combined alarm occurs The condition of the combined alarm is a combination of a series of physical switch quantities and intermediate switch quantities. If the condition is 1, it means the condition is met. Step 35: Automatic Alarm Suppression When the alarm suppression conditions are met: the alarm information that has occurred or been confirmed is transferred to the alarm suppression list, and the transferred alarm information is marked with a new time stamp. When the alarm suppression conditions are not met: the alarm information in the alarm suppression list is transferred to the alarm summary table and alarm sub-table, and the transferred alarm information is marked with a new time stamp. Step 36: Restoring the alarm information in the suppression alarm table When a suppressed alarm is restored, the alarm automatically disappears from the suppressed alarm list; Step 37: Effect of Signal Validity on Alarm After the alarm, the variable point becomes invalid, the point value is still in alarm, the alarm information is retained, and the display is marked with "invalid state"; after the alarm, the variable point becomes invalid, the point value becomes restored, the alarm information becomes restored information, and the display is marked with "invalid state". Before the alarm condition is met, if the variable is invalid, the variable will not generate an alarm; Step 38: Functional combination alarm Function combination alarm means grouping multiple process alarms into a function combination alarm block according to equipment or operation function. This block corresponds to one function combination alarm. When the status of a single alarm information in the function combination changes, the combination alarm information is updated. By clicking the combination alarm name, all the alarm information contained in the combination alarm is displayed in the list. Step 39: Function combination alarm priority The color and flashing status of each function group alarm block depends on the color and status of the highest priority alarm among the single alarms triggered within the group.

5. A large sodium-cooled fast reactor DCS fast reactor alarm method according to claim 1, characterized in that: The step 4 includes: Step 41: Display management; Step 42: Alarm operation group, divide the alarm into three operation groups: stack operation, machine operation and sodium operation; Step 43: Alarm summary list button: an alarm summary list indicator button is placed on the interface to indicate the number of alarm information. The alarm summary list is called up through this button; Step 44: Define alarm colors at each level Step 45: Alarm Page All types of alarm windows are divided into the following five parts: system alarm area; function combination alarm area; operation area; alarm display area; alarm list selection area; Step 46: Information Statistics Step 47: Alarm Information Area It includes the alarm monitoring area and the alarm display area. The alarm monitoring area monitors the latest unconfirmed alarms. The alarm display area should be able to view all the alarm information in the system. Each alarm information occupies one line and is displayed in order of alarm occurrence / recovery time. The oldest information on the current screen is displayed at the bottom of the screen. Step 48: Query the Management Button Area Step 49: Alarm list information content The alarm list information includes legend, time, real-time value of the source point, identification, alarm name, description, alarm limit type, and the operation group to which the variable belongs; Step 410: Sound alarm; Step 411: Silencing the alarm; Step 412: Alarm recovery sound; Step 413: Sound when the CRU is in monitoring mode; Step 414: restrike of the combined alarm; Step 415: Information display mode Alarm display mode is divided into tracking and freezing. Tracking mode: display according to alarm time label, the latest alarm is displayed at the first item in the list, and the display moves down line by line. When the screen is full, the bottom item moves out of the current screen, the displayed information automatically scrolls down, and then tracking continues; Freeze mode: click the "Freeze" button in tracking mode to switch to history mode display; Step 416: Alarm query function Set single query conditions and combined query conditions to filter and query alarm information; Step 417: Alarm query conditions Query information within a specified range using the following query conditions: (1) Query by basic system; (2) Query by alarm roll call; (3) Query by start and end time; (4) Query by alarm level; (5) Query by partition; (6) Combine multiple selection queries according to the above methods (1) to (6); Step 418: Alarm query function is queried according to the basic system; Step 419: Alarm query function queries by alarm name; Step 420: Alarm query function queries by alarm level; Step 421: Alarm query function query by area; Step 422: Alarm query function query by status Step 423: Alarm query function combination query; Step 424: alarm operation function; The following operating functions are provided for the alarm summary table: "Mute", "Row Confirm / Reset", "Page Confirm", "Page Reset", and "Alarm Card"; Step 425: Alarm operation function mute function; After the alarm message appears, the alarm sound will be emitted. You can press the "Mute" button to mute it until a new alarm message appears again. Step 426: confirm the alarm operation function; Select a line of information from the alarm information area and click the "Line Confirm" button. After the alarm information is confirmed, the legend in front of the alarm information stops flashing; the restored alarm is deleted after confirmation; Step 427: Confirm the alarm operation function page; Page confirmation is to confirm the alarm information in the current display screen. Click the "Page Confirmation" button, and the operator needs to make a second confirmation. After the alarm information in the current display page is confirmed, the legend before the alarm information stops flashing. Step 428: reset the alarm operation function page; Step 429: Alarm operation function alarm card link function.

6. A large sodium-cooled fast reactor DCS fast reactor alarm method according to claim 1, characterized in that: The step 5 comprises: Step 51: The total alarm list on the alarm page is opened by the alarm total list indicator button in the page header. The indicator is displayed in the normal background color; Step 52: First alarm on the alarm page. A first alarm button is set on the main panel to indicate whether there is a first alarm. Click the first alarm button to call up the first alarm interface. Step 53: The red alarm list on the alarm page is opened by pressing the "R" button on the alarm indicator; Step 54: Red alarm information content. The red alarm list is a subset of the alarm list. All information in the red alarm list is alarm or recovery information with an alarm level of red. Step 55: The yellow alarm list on the alarm page is opened by pressing the "Y" button on the alarm indicator; Step 56: Yellow alarm information content. The yellow alarm list is a subset of the alarm list. All information in the yellow alarm list is alarm or recovery information with an alarm level of yellow. Step 57: The white alarm list on the alarm page is opened by pressing the alarm indicator "W" button; Step 58: White alarm information content. The white alarm list is a subset of the alarm list. All information in the white alarm list is alarm or recovery information with an alarm level of white. Step 59: Green alarm list on the alarm page, opened by the alarm indicator "G" button; Step 510: Green alarm information content. The green alarm list is a subset of the alarm list. All information in the green alarm list is alarm or recovery information with an alarm level of green. Step 511: The purple alarm list on the alarm page is opened by pressing the alarm indicator "M" button; Step 512: Purple alarm information content. The purple alarm list is a subset of the alarm list. All information in the purple alarm list is alarm or recovery information with an alarm level of purple. Step 513: Alarm suppression list on the alarm page; Step 514: alarm suppression list display, query, and operation; Step 515: alarm page alarm storage list; Step 516: Test alarm list on alarm page; Step 517: alarm page accident diagnosis alarm list; Step 518: Overhaul the alarm list on the alarm page; Step 519: Function combination alarm; Step 520: Alarm operation function printing function.

7. A large sodium-cooled fast reactor DCS fast reactor alarm method according to claim 1, characterized in that: The step 6 includes: Step 61: I&C Fault Definition Device type variables are used as objects for I&C fault monitoring. Use the configuration tool to assign one or more attributes to each device variable. Step 62: Instrument and control fault monitoring objects. All equipment in the DCS system are objects of instrument and control fault monitoring. Step 63: Instrument and control fault configuration requirements; Step 64: I&C troubleshooting requirements; Step 65: 1I&C Button; Step 66: I&C fault list, opened via the "I&C" button on the page header; Step 67: I&C fault list information content, saves I&C fault information and recovery information, each information consists of several fields; Step 68: I&C fault list display mode; Step 69: I&C fault list operation function print; Step 610: I&C fault list operation function fault confirmation; Step 611: I&C fault information query; Step 612: I&C equipment fault query fault query condition display; Step 613: I&C fault query combination query.