Importance of fire-fighting facilities in the hott

2022-08-07
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Importance of fire-fighting facilities in buildings

building fire-fighting facilities refer to the general term of equipment and facilities set in buildings (structures), such as automatic fire alarm system, automatic sprinkler system, fire hydrant system, etc., to prevent and extinguish building (structure) fires. Commonly used are automatic fire alarm system, automatic sprinkler system, fire hydrant system, gas fire extinguishing system, foam fire extinguishing system, dry powder fire extinguishing system, smoke control and smoke exhaust system, safety evacuation system, etc.

building fire-fighting facilities are important facilities to ensure building fire safety and personnel evacuation safety. They are an important part of modern buildings. Building fire-fighting facilities are mainly divided into two categories, one is fire extinguishing system, and the other is safety evacuation system. The fire control room in the building is used to operate, control, repair and maintain, so that the building fire-fighting facilities are always in a good and effective state to ensure the fire safety of the building.

the legislation of building fire-fighting facilities in China started late, but developed rapidly. In a series of fire-fighting technical regulations such as the code for fire protection design of buildings issued after 1987, BYD has been forced to set up automatic fire-fighting facilities and fire control rooms in some high-rise buildings, underground buildings and large-scale buildings with a 63.9% year-on-year decline in supply. Over the past two decades, it has played a great role in fighting building fires, effectively protecting the safety of citizens' lives and national property.

the construction of building fire-fighting facilities in economically developed countries is relatively mature. For example, the United States legislated in 1904 to force modern buildings to install fire safety facilities. According to the statistics of the American fire protection society, in the last 69 years, fires have occurred in buildings equipped with automatic fire-fighting facilities, and the effective rate of fire-fighting facilities is as high as 96.1%. It has indeed played a role in ensuring the fire safety of buildings.

however, we can't help but see that in China's urban buildings, there are serious deficiencies and hidden dangers in the production of (1) experimental machine collets of building fire-fighting facilities, whether they match the quality of test pieces, installation quality and maintenance management. The recent survey results of some cities in our province are shocking. The intact rate of building fire-fighting facilities is less than 25%, especially the automatic alarm system. We should know that the building fire-fighting facilities can not work effectively, which means that the building is not fortified, and it is a major fire hazard. We must have a deep understanding of this and never take it lightly.

we must strengthen supervision, inspection and management, improve the integrity rate of building fire-fighting facilities, and ensure the personal safety of citizens and the fire safety of buildings. There are many types of building fire-fighting facilities. Here we only refer to the inspection of the following seven types of building fire-fighting facilities commonly used in Chinese buildings:

(I) automatic alarm system

early fire alarm is very important. Modern buildings are equipped with automatic fire alarm systems. It is the nervous system of the building, feeling and receiving the signal of fire and giving an alarm in time. It is a competent watchman, giving people who live and work in buildings a great sense of security.

automatic alarm system is one of the most important fire-fighting facilities in modern buildings. According to different fire alarms (probes), it can be divided into smoke sensing, temperature sensing, light sensing, composite and other forms to adapt to different places. After the fire alarm signal is confirmed, it will automatically or notify the personnel on duty to manually start other fire-fighting facilities and evacuation facilities to ensure the safety of buildings and personnel.

common problems in the automatic alarm system:

1. The fire detector (probe) has extended its service life. The service life of the domestic probe is generally about 30000 hours (three and a half years). The service life of the world famous fire detector can reach up to 60000 hours (seven years). However, some building alarm systems still do not replace, repair or clean the probe after more than ten years. The sensitivity of the detector can not meet the work needs at all, and the fire information obtained can not guarantee the function of 5 ~ 25 ℃; If it is accurate, it may delay the alarm opportunity and cause disaster, which is a major fire hazard.

2. Improper annual inspection of automatic alarm system. Some units can not adhere to the annual inspection, some test methods are not standardized, and the test results lack reliability. (this kind of testing unit should undertake) some units are perfunctory to the legal annual inspection.

3. Some units are lax in the management of building fire-fighting facilities, neglect the maintenance of automatic alarm system at ordinary times, fail to repair in time in case of problems, and operate with problems;

4. Some automatic alarm systems cannot be linked with fire-fighting systems and other fire-fighting facility systems. The function of fire-fighting facility systems has aesthetic defects. This phenomenon is very common in buildings in the late 1980s and 1990s.

5. The fire control room of some units usually has insufficient personnel on duty, often one person a day, more than 12 hours on duty; Less than two people are on duty. Fail to fill in the duty record carefully.

6. There is a problem with the fire power supply, which can not guarantee the automatic alarm system to switch automatically and continue to work in case of power failure.

7. When the building fire-fighting facilities are upgraded, or the configuration is increased, the design is unreasonable and cannot be linked with other systems of the original equipment.

8. The automatic alarm system will be abandoned. It will be eliminated and extinguished automatically without application and report. This kind of situation accounts for a large proportion and is a major fire hazard.

9. The automatic alarm system did not establish complete operating procedures and did not operate in accordance with the operating procedures. Some units' fire control rooms did not guarantee 24-hour monitoring, and even started and shut down at work.

how to implement on-site inspection

I. check the duty record in the fire control room to check the maintenance of the automatic alarm system and the cleaning and replacement of fire detectors.

II. Check the annual inspection certificate of building fire-fighting facilities in the current year and the previous year;

III. check whether the fire alarm handling operation procedures are sound, and ask the attendant about the equipment functions and operation procedures of the automatic alarm system on his duty.

IV. check whether the technical data of the installed automatic alarm system are complete (including various data of construction, completion acceptance, equipment maintenance and transformation).

v. check the emergency handling operation of the automatic alarm system (e.g. in case of sudden power failure or no water). Check whether the operators on duty can skillfully operate the control device of automatic fire-fighting facilities, whether they can face various settings, master the fire alarm handling procedures, and whether they can skillfully use various call communication tools.

VI. let the operator on duty actually operate and check the following functions of the automatic alarm system (or part of them)

1. Alarm self-test function of the controller;

2. Silencing and resetting functions;

3. Fault alarm function;  

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