CN103870716B - A kind of building fire protection facility fault impact grading determination method - Google Patents
A kind of building fire protection facility fault impact grading determination method Download PDFInfo
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Abstract
A kind of building fire protection facility fault impact grading determination method, the method has five big steps：Step one, builds mission reliability model, fault message input；Step 2, judges influence of the input fault to fire-fighting reliability unit；Step 3, judges influence of the failure to fire-fighting subsystem；Step 4, judges the influence of failure fire control facility system task；Step 5, fire fighting device fault impact classification judges.The present invention sets up accident analysis judgment basis according to the mission reliability model of building fire protection facility, classification judgement can be carried out to the fault impact of building fire protection facility, its result is objective, credible, and targetedly to take management and corrective measure to provide technical support.It has preferable practical value and extensively application prospect in fire engineering technical applications.
Description
Technical field
The invention provides a kind of building fire protection facility fault impact grading determination method, it relate to use sets up fire-fighting
The method that facility reliability model, fire-fighting system task function are decomposed and fuzzy classification judges, is fail-safe analysis and management
Application of the technology in management of fire safety, belongs to fire engineering technical applications.
Background technology
One) noun and term
1 building fire protection facility
Building fire protection facility：What is set in building (structures) divides for fire alarm, fire extinguishing, evacuating personnel, fire prevention
Every the general name of the facilities such as, fire fighting and rescue action.Building fire protection facility in actual use, will with personnel, environment and management etc.
Element constitutes a fire-fighting system for complexity.The present invention research building fire protection facility refer in particular in a single building install and
The building fire protection facility for using, its system for constituting is referred to as total system.
2 building fire protection facility subsystems and TU task unit
In building fire protection facility system, the combination of a group parts, component or equipment of a certain class fire-fighting function is performed.Press
According to GA503-2004 standards, a building fire protection facility (can hereinafter referred to as be divided herein by several building fire protection facility subsystems
System or fire-fighting subsystem) constitute.
Building fire protection facility TU task unit refers to building fire protection facility when a certain item fire-fighting task is performed, and is occurred in fire
When some specific stage, by some fire-fighting subsystem functions simultaneously or successively complete stage fire-fighting work combination.
Such as in life safety system task is ensured, alarm of fire TU task unit is by automatic fire alarm system and automatic sprinkling fire-extinguishing system
System composition.
3 building fire protection facility components and building fire protection facility reliability unit
Building fire protection facility component (hereinafter referred to as component or fire-fighting component herein) refer to constitute fire-fighting subsystem can be only
The fire product or building block of vertical disposal, such as a fire detector, a shower nozzle, an exhaust opening, a firefighting fan,
One section of pipe network or pipeline etc..
Building fire protection facility reliability unit (hereinafter referred to as reliability unit or fire-fighting reliability unit herein) refers to structure
It is that fire-fighting subsystem is carried out from the angle of fail-safe analysis into a component units of fire-fighting subsystem reliability model
Divide, can be made up of one or several same type fire-fighting components, such as in a building fire automatic alarm subsystem, will
Whole fire detectors are considered as a reliability unit in automatic fire alarm subsystem, and whole system wiring also serves as one
Individual reliability unit, present invention determine that fire fighting device reliability unit is as shown in appendix 1.
The failure and fault mode of 4 building fire protection facilities
The failure of building fire protection facility：It refer to state that building fire protection facility can not perform predetermined function.Normally behave as
The failure of fire-fighting component (product), fire-fighting subsystem functional fault.
Fault mode is the form of expression of failure, and it is the general phenomenon of the failure that can observed or detect, including function mistake
Effect, malfunction, damage are damaged, release Lou stifled, moral degeneration etc..
The function of 5 building fire protection facilities is divided and fault verification
Based on building fire protection facility detection technique code and fire product site inspection judge code and fire product and
The design of system, operation instructions, critical function and general utility functions are divided into (referring to attached by the function of fire-fighting subsystem and component
Table 1), the standard whether fire-fighting subsystem and fire-fighting component critical function are met is required as the subsystem or the failure of component
Criterion.
The fault impact grade of 6 building fire protection facilities
The fault impact grade of building fire protection facility is the degree of the worst latent consequences caused to building fire protection facility failure
Its fault impact is divided into 3 grades by amount, also referred to as Fault criticality grade, the present invention：It is slight (III class failure), general
(II class failure), great (I class failure).
The maintenance management of 7 building fire protection facilities
It is the intact validity for ensureing building fire protection facility, the property right unit of building or settles by oneself or entrusts the 3rd using unit
Side the fire fighting device in building is carried out it is on duty, the work such as check, detect, repair, maintain and file.
The technology for detection of 8 building fire protection facilities
Based on live hand inspection or instrument test is used, judge whether building fire protection facility is intact effectively.Referring to
GA503-2004 building fire protection facility detection technique codes.
The status information of 9 building fire protection facilities
Refer to building fire protection facility after putting into operation, what is produced when day-to-day operation, maintenance management and fire are responded is dynamic
The operation informations such as work, alarm, failure, shielding, believe referring to automatic fire alarm specification appendix A, building fire protection facility running status
Breath table etc..
10 management of fire safety information
The management information of the links such as description tissue or mechanism's fire-fighting safety system are constituted, control, response, feedback, referring to fire
The relevant content of the alarm specification GB50116-2013 Appendix B in calamity.
Two) the FEE failure effects evaluation technology of current fire control facility both at home and abroad
Currently, the accident analysis of China's fire control facility and evaluation three codes of Main Basiss：One is《Building fire protection facility
Detection technique code》GA503-2004, gives fire assembly unit and subsystem function test method, judges to disappear one by one
Whether anti-facility is qualified.Two are《The maintaining of building fire protection facility》GA587-2005, how fire control facility is carried out for description
Maintaining and routine test.Three are《Fire product field quality check decision rule》GA588-2005, is mainly used in offseting
The quality in site reference product standard of anti-product carries out accordance evaluation.Other China is existing《People's Republic of China's fire-fighting
Method》And《Major fire hazard decision method》GA653-2006 refer to must assure that fire fighting device is intact effectively, here,
Intact effectively to be looked like comprising two, one is complete available facility assembly, no to damage and lack；Two are fire assemblies and are
System functional task Degree of Success is high, and performance parameter meets design and code requirement.
The fault impact classification of fire fighting device is that analysis fire product failure sets to product itself and whole building fire-fighting
The influence of use, function and the state applied, many angle calculations from example statistics of the Study on Fault of domestic and international fire control facility disappear
The success rate of anti-facility, analyzes the few of fire fighting device fault impact grade, some to propose that fire-fighting sets with reference to IEC61508 standards
Safety integrity level division is applied, or marking evaluation is carried out using safety checklist method, there is certain limitation, reliability
In engineering technology, conventional failure effect analysis (FEA) method is a lot, including FMECA method, Fault Tree, cause and effect block-scheme method,
Bayesian confidence network methods etc., but complete fire product reliability index system is not yet set up due to China and is
The reliability management of system, carries out the above method and lacks basic application data, and the failure of fire control facility is such as needed in FMECA method
Pattern carries out statistical analysis.
To sum up, existing technical method is only gived to the failure of building fire protection facility and qualified uses shape with unqualified two kinds
State, but in actual inspection, completely qualified building fire protection facility seldom or only can continue shorter a period of time, substantial amounts of
There are such or such failure problems in building fire protection facility, in many fire cases, because fire control facility troubleshooting is improper,
Affect the best opportunity of fire extinguishing adversely, and cause the long-term existence of hidden fire-fighting danger.Therefore, fire code requirements are implemented, raising disappears
How the intact validity of anti-facility, judge the fault degree and influence grade of fire fighting device, and thus formulates corresponding maintenance
It is very necessary with measures to rectify and reform.
Three) functional analysis of building fire protection facility
Failure effect analysis (FEA) to building fire protection facility is on a time point, default disappearing to be completed to building fire protection facility
The judgement of anti-task ability.The present invention proposes that application function analysis method (FAST) enters to the task and function of building fire protection facility
Row is decomposed (referring to accompanying drawing 1), and the system task of building fire protection facility is three big tasks, root according to fire-fighting goal decomposition by the present invention
The time sequencing completed according to fire-fighting task is divided into different fire-fighting TU task units, is by TU task unit subdivision fire-fighting point further
System function, is then further subdivided into different reliability units according to subsystem reliability model, will be to building fire protection facility failure
Analysis be converted into the analysis of fire-fighting component and subsystem function referring to table 1- tables 3.
In table 1, as a example by protecting life security task, the task, with the time as variable, is suitable with evacuating personnel space
Each fire-fighting subsystem function that sequence is introduced successively constitutes four TU task units, as shown in table 1, be potentially dangerous situation is carried out
Fully estimate, including least favorable situation.As the failure of artificial and automatic fire-extinguishing function, Travel distance are very long etc., task reliability is set up
Property model is as shown in Figure 2.
The building fire protection facility system task dividing elements of table 1
The function of fire assembly and fire-fighting subsystem includes basic function, miscellaneous function, defencive function, informational function
Deng.Here, above-mentioned functions are divided into critical function and general utility functions for standard with the influence of fire-fighting main task, generally by base
The miscellaneous function of this function and indispensability is set as critical function, and one can be divided into for other such as informational functions and interface function
As function, table 2 is the division carried out to the function of point type fire detector according to the requirement of 7.2.1 in GA588-2005, other
Fire assembly can also be divided like this.Table 3 is that, by this requirement, the function of being carried out to automatic fire alarm system is divided.
The function of the fire-fighting subsystem of table 2 is divided
The function of the fire assembly of table 3 divides (smoke point detector)
Four) system administration of building fire protection facility and data statistics
Building fire protection facility fault message is from the daily inspection of fire fighting device, maintaining, maintenance and test, fire drill
With the work such as annual test.Record for convenience, analyze and collect, the present invention has worked out building fire protection facility failure situations statistical form (table
4), table 4 is that a certain fire-fighting is powered the failure situation that subsystem measures at the 185th day of certain year, and other subsystems are temporarily omited.
The building fire protection facility component faults situation list of table -4
Italic mark item is the significant reliability unit that subsystem recommends setting in table 4.Fire fighting device fault mode reference
FMEA determines that defective proportion is the ratio of reliability unit internal fault package count and all components number.By the mistake of fire assembly
The failure of reliability unit where effect situation, in table 4, there is the infull minor failure of display in power distribution cabinet unit, but due to civil power
The power failure of input block, causes subsystem output of powering to there is significant trouble.Here, the present invention is by building fire protection facility
The reliability model of unit is divided into three kinds：
1st, series model A
In train, fire product (component) function of cell operation normal requirement component units is all normal, such as prevents fires
In roller shutter gate cell, such as multiple fire resisting shutters collectively form a segmentation facility, and consistent action is needed during fire.Work as any of which
During individual failure, element failure is can determine that.
2nd, parallel model B
It is used for the reliability of analytic function redundancy unit, such as evaluates single device multipath and throw power supply, many fire waters
Pump forms standby, and its unit assignment reliability is changed into parallel model, when only armamentarium fails, identifying unit failure.
3rd, MODEL C is decided by vote
One multiple component of reliability unit, completes its fire-fighting function, such as point-type detection in respective guard plot respectively
Device, fire resisting damper, fire resistant doorsets etc., the degree of protection based on protection object are required referring to table 5, when a component or multiple component failures
When,
The reliability structure of the multicompartment fire fighting unit is voting type, and " k is taken in n " is decided by vote unit and existed simultaneously by n component
Work, wherein having k or more than k unit, normally then system is normal.If the reliability of component is R0, unreliable degree is Q0, then should
The reliability R of unitSAs shown in Equation 1.
The degree of protection of the building fire protection facility of table 5 compares recommendation tables with multicompartment element failure
The content of the invention
According to technical standards such as building fire protection facility technology for detection codes.Determine the fault verification criterion of fire-fighting component, draw
Divide the type of fire-fighting reliability unit, establish the fire fighting device fault statistics analytical table based on operational management referring to table 4,
Analyze influence of the fire fighting unit failure to fire-fighting subsystem function.And fire-fighting subsystem functional fault is to building fire protection facility
The influence of system task, from the angle that failure influences on building fire protection facility function and task, judges fault impact grade.Realize
Quantitative analysis and fuzzy evaluation to building fire protection facility malfunction, by its fault impact grade divide into three-level：Slightly
Component faults (III grade), general functional fault (II grade), great task failure (I grade).Disappear to instruct and improving building
The management of anti-facility provides technological means.
Technical scheme
Critical parameter explanation：
The fault verification value R of fire assembly unitiT (), the instantaneous value of t is abbreviated as Ri。
Fire-fighting subsystem function decision content IM(t), I1、I2~IMIt is the instant function decision content of subsystem t；
VRT () is building fire protection facility TU task unit decision content, the instantaneous value of t is abbreviated as VR；
VST () is the system task decision content of building fire protection facility, the instantaneous value of t is abbreviated as VS。
A kind of building fire protection facility fault impact grading determination method of the present invention, the method is comprised the following steps that：
Step one, builds mission reliability model, fault message input
The essential information of building fire protection facility is read in, its degree of protection is determined, the functional task of building fire protection facility is determined
Reliability model and composition parameter, including fire-fighting reliability unit model, subsystem model, building fire protection facility task model.
The fault message of input fire-fighting component or subsystem function.
Step 2, judges influence of the input fault to fire-fighting reliability unit
According to the failure criterion of fire-fighting component, the failure situations to fire-fighting component judge, with reference to fire-fighting reliability
Property unit model structure (series, parallel or voting etc.), obtain fire fighting device reliability unit fault verification value Ri(t),
Referring to table 6.
The function of the fire-fighting subsystem of table 6 is divided
Step 3, judges influence of the failure to fire-fighting subsystem
The fault verification value R that will be obtainediT () is brought into corresponding fire-fighting subsystem mission reliability model and is calculated,
Obtain fire-fighting subsystem function decision content IMT (), function effect of the failure to fire-fighting subsystem is judged with this.Such as in automatic water jetting
In fire extinguishing system, its automatic sprinkling fire-extinguishing function is its critical function, and its reliability model is as shown in Fig. 2 the figure is only included
Automatic sprinkler system completes its main task --- the significant reliability unit of sprinkling fire, not including water flow indicator,
The general reliability unit such as end water testing device.
Its function decision content can be calculated as shown in Equation 2:
RiT reliability decision value that () is respectively four fire-fighting reliability units in automatic sprinkling fire-extinguishing functional mode (takes
Be worth is 0 or 1), IMT () is automatic sprinkler system function decision content, wherein first unit R1T () is input into for spray supplies water
The fault verification value of unit.
Step 4, judges the influence of failure fire control facility system task
By the instant I of each fire-fighting subsystemMT () is brought building fire protection facility mission reliability model into and is analyzed, to protect
As a example by barrier life security task：Its mission reliability model is as shown in figure 3, as shown in figure 3, building fire protection facility ensures life peace
Full system task be four TU task units according to sequential and space development 1., 2., 3., 4. in series, each job order
Unit is again made up of some fire-fighting subsystems, therefore can be obtained this mission reliability state equation and be：
In formula 3, VST () is building fire protection facility system task decision content, VRIt is the job order of t building fire protection facility
First decision content, VRValue is (0<VR≤ 1), wherein VRCalculating is built upon on hypothesis below：
1) environment of each subsystem of building fire protection facility, meet regulatory requirements using, maintenance condition, and keep constant.
2) common cause fault between fire-fighting subsystem is not considered, such as causes the fire hydrant point to be because fire fighting supply subsystem is anhydrous
The failure of system.
3) operational error of personnel in facility function is not considered, and assumes that the reliability of studied operating personnel is 1.
4) building fire protection facility TU task unit reliability structure 1., 2., 3., 4. is linear combination generator.Its implication
It is shown in Figure 5：
The TU task unit F of building fire protection facility includes M fire-fighting subsystem, expresses possibility by one or several fire-fightings point
System is completed, input signal S1,S2…SMRepresent M fire-fighting subsystem functional reliability decision content IM(t), VRFor t is built
The TU task unit decision content of fire fighting device, it is by the fire-fighting subsystem function decision content I that constitutes1,I2~IMBy linear weighted function and
Method is calculated, here, application level analytic approach determines fire-fighting subsystem IMT () is to completing particular task unit VRThe power of (t)
Weight a1~aM, setting and do not receive risk, the fire-fighting subsystem of participation can complete unit assignment with 100%, therefore, VRThe calculating of (t)
Formula is represented by：
Fire-fighting TU task unit VRIn fire-fighting subsystem weighted value a1~aMSet by expert estimation, in this model
Value as shown in table 7, calculate fire-fighting TU task unit decision content V using formula (4)R(t), 0<VR(t)<1；
The fire-fighting subsystem Function Weight recommendation tables of table 7-ensure the safety of human life
| Fire-fighting subsystem function | TU task unit 1 | TU task unit 2 | TU task unit 3 | TU task unit 4 |
| Fire detector warning function | 0.6 | 0.4 | ||
| Artificial warning function | 0.1 | |||
| Waterpower warning function | 0.3 | |||
| Fire broadcast | 0.4 | |||
| Fire telephone | 0.2 | |||
| Passage is controlled | 0.5 | |||
| Exit signs | 0.3 | |||
| Emergency lighting | 0.2 | |||
| Smoke controlling function | 0.5 | |||
| Separate defencive function | 0.5 |
It is determined that the task decision content V of fire fighting device TU task unitRAfter (t) value, structural fire protection is quantitatively calculated using formula (3)
Facility system task decision content VS(t)。
Step 5, fire fighting device fault impact classification judges
To sum up, according to a certain moment building fire protection facility Ri(t)、IM(t) and VSThe decision content or measuring and calculating value of (t), reference table
The 8 fault impact grades for determining building fire protection facility.
The building fire protection facility fault impact grading evaluation criteria of table 8
The present invention is that in whole building fire fighting device system level, the failure situation to subsystem and fire-fighting component is carried out
Analysis, evaluates influence of the failure to whole fire-fighting system task, subsystem function and unit performance.Due in actual inspection
Fire fighting device failure often occurs with multicompartment failure mode, is referred to the above method and is analyzed judgement.
Output result of the invention is in system task aspect, building fire protection facility fault impact to be analyzed and is commented
Valency, system flow is as shown in Figure 6.Its flow chart is described as follows：
1st, obtain and evaluate protection object building fire protection facility essential information and failure logging
2nd, building fire protection facility total system, subsystem mission reliability model parameter, component faults information input are determined；
3rd, influence of the fire-fighting component faults to fire-fighting reliability unit is judged；
4th, influence of the fire-fighting reliability unit failure to fire-fighting subsystem is judged；
5th, influence of the fire-fighting subsystem failure to building fire protection facility system task is judged；
6th, comprehensive analysis fire fighting unit, subsystem, TSD total system down situation, carry out classification judgement
7th, countermeasure is proposed based on building fire protection facility fault impact grade.
Advantage and effect：A kind of building fire protection facility fault impact grading determination method of the present invention, its advantage is：According to building
The mission reliability model for building fire fighting device sets up accident analysis judgment basis, and the fault impact of building fire protection facility can be entered
Row classification judges that its result is objective, credible, and targetedly to take management and corrective measure to provide technical support.
Brief description of the drawings
Fig. 1 building fire protection facility analysis of system performance schematic diagrames
One of Fig. 2 building fire protection facility system tasks --- ensure the reliability model of life security
Fig. 3 fire-fighting subsystem mission reliabilities model schematic-automatic sprinkling fire-extinguishing subsystem
Fig. 4 building fire protection facility system task unit fail-safe analyses schematic diagram-guarantee life security
Fig. 5 building fire protection facility system task unit fail-safe analysis schematic diagrames
Fig. 6 building fire protection facility fault impact grade analysis flow charts
Specific embodiment
See Fig. 1-6, one, building fire protection facility essential information to be analyzed and failure situation：
XX cities innings office building, the building is that high-rise civil building is highly 59 meters, B1,13 layers on the ground, mainly
Fire fighting device is completed for 1999, mainly includes：
● fire-fighting electric power system：System power supply is two stage loads, and two-way is mutually thrown,Double circuit power supply。
Waterworks for firefighting：Fire pump 4, spray pump 4, municipal water supply DN100, fire cistern：200Cubic meter,
30 cubic metres of fire water box, outdoor fire hydrant：4It is individual, siamese fire department connection：2Place.
Automatic fire alarm system：Monitoring alarm point：486Point, including fire broadcast and fire telephone system, fire-fighting are wide
Broadcast：60Only, fire telephone 6, at jack 30.
Automatic sprinkler system：Wet alarm valve2Set, shower nozzle860Only, 460, area high, 400, low area are set to.
Fire hydrant fire extinguishing system：It is indoor60It is individual, it is outdoor4It is individual, fire extinguisher120Only
Mechanical fire-fighting smoke exhaust system：Every layer sets induced-draft fan 2, pressure fan 1, exhaust opening 2, air outlet 1.
Emergency lighting and exit signs：120Place.
Due to not carrying out specification care and maintenance, after 2006, there is many places failure in fire fighting device for fire-fighting, 2012 certain
Fire-fighting inspection record is as shown in table 9 below：
The fire fighting device system outage statistics table of table 9
Project name：The XXX mansions review time：In September, 2012
With reference to the archives material of the facility, the degree of protection of this building fire protection facility is determined for 2 grades, to its fault impact point
Analysis is as follows：
Step one, sets up fire fighting device mission reliability model, input fault information
The failure of this building fire protection facility relate to automatic fire alarm system, waterworks for firefighting, hydrant system, from
Dynamic fire-sprinkling system, smoke control system.The mission reliability model of its fire-fighting subsystem (is gone out with automatic water jetting as shown in Figure 3
As a example by fiery system).With reference to table 3, by fire-fighting component faults information input, its failure situations is judged, other fire-fighting components can also shine
This is divided.
Step 2, fire-fighting reliability unit fault characteristic value R values judge
Fire-fighting reliability unit (subordinate list 2) where fire-fighting component faults information is substituted into, calculates fire-fighting reliability unit
Fault characteristic value R is as shown in table 10 (by taking automatic fire alarm system, waterworks for firefighting as an example).
The fire fighting device cell failure statistical form of table 10
In upper table, RTCQIt is the fault verification value of fire detector unit, RBjQIt is the failure of fire alarm control unit unit
Decision content, RkzIt is the fault verification value of control module unit, IHZBJIt is the instant function decision content of fire alarm system function.
RXFBIt is the fault verification value of fire pump unit, RSHXIt is the fault verification value of fire water box unit, IGSHIt is fire-fighting
The instant function decision content of water system.
Step 3, judges influence of the failure to fire-fighting subsystem
According to element failure data, fire control facility subsystem function decision content IMT () is calculated.
According to cell failure decision content, the measuring and calculating of fire-fighting subsystem reliability model is brought into, judge fire fighting supply subsystem IGSH
Failure (the important failure R of fire pump, fire water box unitXFB=0 and RGSH=O) cause fire hydrant IXHSHAnd automatic sprinkling fire-extinguishing
System IZDPSFunction decision content be 0.
Step 4, judges the influence of failure fire control facility system task
Bringing above-mentioned subsystem function decision content into building fire protection facility system task reliability model carries out measuring and calculating analysis,
Judge that the system puts out the unit assignment decision content (V of initial fire disasterR1=0) and prevent fire spread unit assignment decision content (VR1
=0) and avoid full building fire unit task decision content (VR3=0).Calculated according to formula 5, the system for judging building fire protection facility
Task decision content --- fire extinguishing and control fire development can not complete (VS2=0), its analysis is as shown in table 11.
Table 11XXX building fire protection facility system task impact analysis tables
Step 5, building fire protection facility fault impact grade judges
According to the results of measuring of step 2-step 4, the building fire protection facility fault impact grade reference 8 to XXX buildings
It is analyzed, it is possible to determine that its grade is I class significant trouble referring to table 12.Be present major hidden danger in system, it should disappeared at once
Anti- rectification.
Table 12XXX building fire protection facility fault impact grading evaluation tables
In upper table, VS2It is two, I of building fire protection facility system taskGSHFire fighting supply subsystem function decision content IGSHFor
0, the table of comparisons
6 decision criteria, determines the fault impact grade of this building fire protection facility for I classes, that is, there is significant trouble.
Claims (1)
1. a kind of building fire protection facility fault impact grading determination method, it is characterised in that：The method is comprised the following steps that：
Step one, builds mission reliability model, fault message input
The essential information of building fire protection facility is read in, its degree of protection is determined, the functional task reliability of building fire protection facility is determined
Property model and constitute parameter, including fire-fighting reliability unit model, subsystem model, building fire protection facility task model；Input
The fault message of fire-fighting component or subsystem function；
Step 2, judges influence of the input fault to fire-fighting reliability unit
According to the failure criterion of fire-fighting component, the failure situations to fire-fighting component judge, with reference to fire-fighting reliability list
The model structure of unit, obtains the fault verification value R of fire fighting device reliability uniti(t), referring to table 6 below；
The fire-fighting equipment of table 6, assembly function are divided and fault verification
Step 3, judges influence of the failure to fire-fighting subsystem
The fault verification value R that will be obtainediT () is brought into corresponding fire-fighting subsystem mission reliability model and is calculated, disappeared
Anti- subsystem function decision content IMT (), function effect of the failure to fire-fighting subsystem is judged with this；
Can calculate shown in its function decision content such as formula (2):
RiT () is respectively four fault verification values of fire-fighting reliability unit in automatic sprinkling fire-extinguishing functional mode, value be 0 or
1, IMT () is automatic sprinkler system function decision content, wherein first unit R1T () is the event for spraying water supply input block
Barrier decision content；
Step 4, judges the influence of failure fire control facility system task
By the instant I of each fire-fighting subsystemMT () substitutes into building fire protection facility mission reliability model and is analyzed, structural fire protection sets
Apply and ensure that the system task of life security is in series by four TU task units according to sequential and space development, each job order
Unit completes again to be made up of one or several fire-fighting subsystems, therefore obtains this mission reliability state equation and be：
In formula (3), VST () is building fire protection facility system task decision content, parameter VRT () is the list of fire fighting device TU task unit
Meta task decision content, VRT () value is 0<VR(t)≤1, wherein VRT () calculates and is built upon on hypothesis below：
1) environment of each subsystem of building fire protection facility, meet regulatory requirements using, maintenance condition, and keep constant；
2) common cause fault between fire-fighting subsystem is not considered；
3) operational error of personnel in facility function is not considered, and assumes that the reliability of studied operating personnel is 1；
4) reliability structure of building fire protection facility TU task unit is linear combination generator, the TU task unit of building fire protection facility
F includes M fire-fighting subsystem, expresses possibility by one or a plurality of fire-fighting subsystems are completed, input signal S1,S2…SMRepresent M
Individual fire-fighting subsystem functional fault decision content IM(t), VRIt is the output signal R of TU task unitiT the value of (), it is represented is believed by input
Number S1,S2…SMThe state value V that linear combination is exportedR(t), here, application level analytic approach determines fire-fighting subsystem IM(t)
To completing particular task unit VRThe weight a of (t)1~aM, set and do not receive risk a0=0, the fire-fighting subsystem of participation can be with
100% completes unit assignment, therefore, VRT the computing formula of () is represented by：
Wherein,Value 0 or 1；
Fire-fighting TU task unit VRFire-fighting subsystem weighted value a in (t)1~aMSet by expert estimation, in this model
Value is as shown in table 7, the intact angle value V of function for calculating fire-fighting TU task unit using formula (4)R(t), 0<VR(t)<1；
The fire-fighting subsystem Function Weight recommendation tables of table 7-ensure the safety of human life
It is determined that the unit assignment decision content V of fire fighting device TU task unitRAfter (t) value, structural fire protection is quantitatively calculated using formula (3)
Facility system task decision content VS(t)；
Step 5, fire fighting device fault impact classification judges
To sum up, according to a certain moment building fire protection facility Ri(t)、IM(t) and VSThe decision content or measuring and calculating value of (t), it is true with reference to table 8
Determine the fault impact grade of building fire protection facility；
The building fire protection facility fault impact grading evaluation criteria of table 8
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| US10102053B2 (en) | 2016-07-13 | 2018-10-16 | Honeywell International Inc. | Systems and methods for predicting and displaying site safety metrics |
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