【 Weak current college 】 building fire equipment construction problems and measures

1 main building fire equipment construction problems
1.1 fire water network pressure test does not meet the construction standards
Fire fighting water supply network pressure test of the construction plan and specification requirements. At present, some construction work only for network compression testing or test pressure does not conform to the design and specification requirements, thus giving the normal operation of the pipeline system brings significant risk. In accordance with the specifications, network installation has been completed, should be strength and tightness test.
1) fire-fighting water supply of metal and composite pipe, test pressure for the pipe work pressure of 1.5 times, and not less than 0.6MPa. Strength test is under the pressure of the pipeline network in the test, the pressure regulator 10min should not be greater than 0.02MPa, then drops to work under pressure, not qualified for the infiltration not leak; plastic pipe water supply system should be regulated under the test pressure, pressure drop 1h does not exceed 0.05MPa, and then in the work pressure of 1.15 times State regulators 2h, pressure not exceeding 0.03MPa, not permeable not leak is qualified.
2) automatic sprinkler system. When the design work pressure of not more than 1.0MPa, water pressure strength test pressure is the pressure of the design work, and not 1.5 times lower than 1.4MPa; when the design pressure greater than 1.0MPa, water pressure strength test pressure shall be the working pressure 0.4MPa. Water pressure strength test is network stability under the test pressure, pressure drop 30min not greater than 0.05MPa, not permeable not leak is qualified. While the pressure tightness test should water pressure strength test and pipeline flush after passing the test pressure shall be designed to work under pressure regulator 24h, no leakage is qualified.
1.2-fire detection system settings confusion
1) some construction units or owners ask randomly change the fire hydrant bottom hole location reserved, and used for gas welding and cutting hole, causing the after installation, for fire protection design outlet direction cannot be set into the wall hydrants 90 ° corner; or with the distance is too small, resulting in fire hose cannot install to a fire hydrant or water band formation affect yield bend. 2) some simply cannot meet the high pressure fire water system architecture, design, construction, fire protection water supply by high pressure for design, construction, in order to save the underground Cistern, pressurized fire pumps, roof and linkage control device for investment. 3) fire box and its annex is the second renovation process fire box obscured by ornament, decoration material around the door of body color and the color of the door of distinct; sometimes fire hose and interface free Brianza, interface card is not installed, result when the test water springs received, and water shedding.
1.3 automatic sprinkler system installation specification
1) diameter pipe material and does not meet the requirements. Part of the sprinkler system is not used by national regulatory requirements, hot-dip galvanized steel tube has uneven thickness thin steel tubes, in diameter 15mm of water distribution pipes 2 only installed on a standard nozzle 3 only. 2) connection does not regulate and most of the project pipeline not baffled bracket installed. The automatic sprinkler system construction and acceptance of clearly defined: network installation, when the pipe nominal diameter smaller than 100mm, should adopt the thread connection, when the pipe nominal diameter not less than 100mm, may use the grooved pipe joints or flange connection, when the pipe nominal diameter not less than 50mm, each equipped with water dry pipe or pipes set anti shake support should not be less than 1; when the pipeline changes direction, there should be baffled bracket. In practical engineering, construction convenient, nominal diameter smaller than ·adjustment pipe frequently used welding, most of the project pipeline is not baffled bracket installed. 3) thermal printhead with the surrounding object distance does not meet the specification requirements, resulting in a fire because the nozzle distances with the floor, the temperature sensor components can not be timely action, delay spray time thus enabling the rapid spread of fire; or nozzle spacing around the object, but too close to the fire with water spraying of the protective scope of vulnerability exists. 4) nozzle protection area beyond the specification standard. severe In accordance with national norms: civil architecture I level standard nozzle single largest protected area of 12.5 ㎡ and some industrial enterprises and establishments K = 80 standard nozzle protection area of 20 square meters. Some places even the fake spray "phenomenon that is about to head over the ceiling without connecting with the water supply network; some simple automatic sprinkler system for water distribution and water distribution, dry pipe diameter of 200 100mm 40mm with diameter of 200 or even 25 community life, the water pipe network lap, pressure difficult to meet. 5) hydraulic alarm is not set on the public channel or walls of the signal. When you use the site in case of fire, fire sprinkler system is powered up, the alarm sounds cannot be on duty personnel or other persons in the protection of sites found that relying on a time in a timely manner, resulting in unnecessary loss of property and casualty, and after the fire fight water control valve not conveniently close and maintenance checks.
2 root causes of the problem
1) construction team personnel quality varied, high and low. For the economic benefit of some focused only on the construction, construction at lower standards. In addition, the fire facility construction, lack of supporting professionals, could not have fire facilities monitoring with scientific testing methods, advanced technology, stable performance, test equipment and the political and technical quality of good, familiar with the test methods and test equipment and after examination of personnel that three basic conditions, this type of construction only stay on the surface, but without the depth of the technology puzzle and application of science, uniform testing and test methods. 2) economy's relative lag, constraints on the development of fire safety. Some units or owners to the one-sided pursuit of cost savings, without reducing the fire technical standards will be set by national regulatory requirements place a large number of fire-fighting facilities for "simplified" or even "zero", the so-called norm "too close" to deal with customs clearance, have considerable fire hazards. 3) to establish and improve fire protection equipment installation design, construction and acceptance. Nowadays in the installation and supervision and inspection process, you can only follow the original specifications and relevant industry standards, such as GBJ16-87 design of a fire prevention code, GB50045-95 tall buildings design fire protection standard, GB] 50084-2001 automatic sprinkler system design specifications, GB50261-% automatic sprinkler system installation and acceptance of GB50015-2003 specifications for the design of water supply and drainage, GB50242-2003 building water and heating engineering construction quality approval standard, etc.
3 measures to solve the problem
Construction of the above problems, fully exposed the building fire safety equipment in certain shortcomings, to this end, to ensure building fire fire-fighting equipment and always maintain a good working condition, must be fully made of fire-fighting equipment.
1) fully implement the responsibility system for fire safety, to raise people's awareness of fire safety. From engineering design, construction, project management, and various links in the strict, ensure security, eliminate all types of accident. Develop practical control measures, focus, vigorous implementation, effectiveness, especially from the "source", to prevent congenital fire hazard. At the same time, the social unit of legal representative or the responsible course organized fire knowledge, focusing on the fire service law, the authorities, organizations, enterprises and institutions to fire safety regulations for the administration of learning, enhance fire safety responsibility consciousness, specifically should responsibilities, let them from the heart to truly focus from fire.
2) implemented to strengthen its efforts to improve management mechanism. On the building safety in production responsibility system is not implemented, construction safety management system, construction safety oversight and supervisory staff unclear responsibilities, construction installation not in strict accordance with relevant State regulations, and so on, should strengthen the execution of the construction site to implement strict punishment, periodically check the pipe, for not complying with the map construction, altering the building structure, fire-fighting facilities ordered corrective action and overdue correction according to stop construction and significant fines, in order to maintain the solemnity of fire laws. On fire supervision departments and acceptance through the building works, to do a day-to-day supervision and inspection of fire discovered fire facilities, equipment damage to supervise unit firmly grasp the rectification, to ensure that the fire protection equipment at the crucial moment.
3) fire-fighting equipment maintenance and repair work. Establishing fire protection equipment, regular maintenance system, fire-fighting facilities maintenance institutionalized to discover system failures and malfunctions, and promptly excluded, thus ensuring the system's functioning; selecting qualified professional fire-fighting facilities maintenance agencies, as well as select trained and qualified personnel responsible for the daily fire fighting facilities maintenance work.
4) enhancing fire safety awareness training. Further improve the fire facility design, construction, supervision and fire inspectors and control personnel level. Currently, around the extensive implementation at all levels, one of the most comprehensive fire safety education and training, receive a certain effect, but the professional knowledge of the fire services have yet to be further enhanced, identify problems and problem solving skills requires further strengthening.
In short, with economic development, acceleration of the process of modernization, towns obtain rapid development, fire work constantly perfected, the broad masses of cadres fire legal consciousness is growing, only the building fire safety design quality, building fire equipment installation, testing and maintenance of the quality of the strings tension, at all times to ensure the building's fire safety and personnel security to economic development and economic development by creating more favourable conditions, give full play to the good economic construction fire service guarantee.