Fire fighting system reliability analysis and calculation method

Abstract

The invention belongs to application of a reliability analysis technology to the technical field of fire engineering, and ensures that the using reliability of a fire fighting system is accurately analyzed and calculated. A fire fighting system reliability analysis and calculation method comprises the following steps of: establishing a fire fighting system reliability model and determining reliability units according to the working principle of the fire fighting system, forming a GO chart for establishing the fire fighting system according to the boundary of the fire fighting system and success criteria, and determining a fault judgment method for the reliability units of the fire fighting system according to task analysis of the system and fire code requirements; and substituting fault statistical data of the reliability units of the fire fighting system into a GO model of the fire fighting system to calculate corresponding reliability indexes of the fire fighting system, such as a fault rate, average maintenance time, availability and the like. By the method, the reliability of the fire fighting system can be objectively qualitatively evaluated or accurately quantitatively evaluated, and the method can be widely applied to reliability design, reliability manufacture, fault analysis and system evaluation of the fire fighting system.

Description

Technical field [0001] The present invention belongs to the application field of fire protection engineering technology, and specifically belongs to the application of reliability analysis technology in the fire protection industry, including establishing the reliability model of the fire protection subsystem, determining the reliability data analysis and sorting method of the fire protection subsystem, and improving the reliability of the fire protection subsystem. make qualitative or quantitative evaluations. Background technique [0002] 1) Nouns and Terminology [0003] 1. Building fire protection facilities and fire protection systems, repairable systems: [0004] Building fire protection facilities: the general term for facilities such as fire alarm, fire extinguishing, personnel evacuation, fire separation, fire fighting and rescue operations set up in buildings and structures. In the actual use of building fire protection facilities, a complex fire protection syste...

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Problems solved by technology

[0023] 4. Failure and failure of fire protection products

[0038] 2) Failure rate (also known as failure rate)

[0048] 5) Maintenance degree

[0064] 2) Using the "Technical Regulations for Building Fire Protection Facilities Testing" (GA503-2004) and "Fire Protection Products On-site Inspection and Judgment Rules" (GA588-2005) to make an instant judgment on whether the fire protection system meets the requirements is to check the fire protection system at a certain point in time. The function makes a judgment of whether it is qualified or not. Usually, the test report claims to be only responsible for the state at that time, and cannot accurately describe the working characteristics of the fire protection system within a period of time.

As a result, the reliability of the fire protection system cannot be correctly evaluated, or the actual availability of some systems that pass the nominal test is very low

[0065] 3) The "Guidelines for Performance Evaluation of Fire Protection Facilities in Active Buildings" that is being compiled uses the AHP method to evaluate the reliability of the fire protection system. Since the method of expert scoring is used to determine the judgment criteria in terms of element division and weight judgment, different experts The opinions given by the group cannot be unified, which makes the reliability evaluation results of the fire protection system not objective enough

[0095] (2) Signal flow connection operator

Reliability characteristics suitable for analyzing a large number of samples, only suitable for systems without timing

For the reliability analysis of a specific timing and multi-state fire protection system, it is impossible to predict the specific possible failure mode of the facility, so this method is not suitable

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