Discussion on the problems and preventive measures in building fire water supply and drainage construction

Introduction:

Judging from the current economic situation of different cities in China, the development speed of buildings has shown a very rapid scene, but the development speed of building fire water supply and drainage obviously cannot be compared with the development speed of buildings, which invisibly causes some problems in the construction of building fire water supply and drainage, thus affecting the safety and reliability of building fire protection in the later period. Therefore, it is necessary to start with the construction of building fire water supply and drainage, and eliminate its existing problems in time.

A, building fire water supply and drainage construction overview

Generally speaking, building construction itself will involve many professional aspects, such as electrical construction, HVAC construction, decoration construction and water supply and drainage construction. And the essence of building fire water supply and drainage is another aspect of water supply and drainage specialty. Specifically, building fire water supply and drainage refers to the fire-fighting professional construction in the building in order to ensure the safety of putting into use in the later period of the building, escape safely in case of fire and take reasonable remedial measures. For modern technology, water is the main means to put out fire or smoke. Therefore, from this aspect, fire water supply and drainage construction should be carried out in buildings to achieve the corresponding expected effect, that is, fire water supply and drainage construction in buildings.

The main goal of building fire water supply and drainage construction is to deliver water to the fire site in time and put out the fire in time in case of fire and other accidents. According to the statistics of some materials in recent years, there are not a few fire accidents in buildings, especially high-rise buildings, caused by negligence and other reasons every year. However, in the later investigation, the fire water supply and drainage construction of some buildings was not perfect, which could not really play a timely remedial role, resulting in the loss of economic property and life. It can be seen that building fire water supply and drainage construction is a very important link in the whole construction, and its construction quality and safety monitoring can not be ignored.

Second, the problems existing in building fire water supply and drainage construction

1. Fire water supply and drainage pipe network

According to the relevant design standards and acceptance specifications of building fire water supply and drainage construction in China, the building fire water supply and drainage network should be arranged in a ring shape after the final construction. Specifically, the water inlet pipes of the circular pipe network should be arranged as two or more pipes, but at least two pipe networks should exist. The source of introducing pipe network should be two different municipal water supply and drainage pipe networks. The main purpose of this design is to ensure the normal water supply in case of fire, when one of the two pipe networks can't supply water in time. In the construction design of building fire water supply and drainage, there are clear requirements in design drawings and design specifications. However, in actual construction, in order to save costs, cut corners or other reasons, construction units often end up with only one water supply and drainage pipe network. Although some construction units have built two water supply pipe networks, the water source of the pipe networks is actually a unified municipal interface, which will inevitably reduce the reliability of water inflow and leave a safety hazard for the later period.

At the same time, in the fire water supply and drainage pipe network, there are still cases where the function test is not strictly in accordance with the design scheme and related requirements, or the test is unqualified and enters the next working procedure of construction. In the construction of building fire water supply and drainage, water supply and drainage pipe network generally needs to carry out leak test and strength test to ensure that the pipe network will not leak and burst under strong water pressure. In fact, some construction units don't carry out pipe network test, and some only carry out leakage test without strength test, so it is impossible to predict the safe operation of pipe network in the later period.

2. Fire hydrant system

From the current indoor construction of building fire water supply and drainage, in most cases, the combined fire hydrant box box is embedded in the wall, which has certain advantages in design and construction. However, due to ignoring the important link of setting lintel at the entrance of the box body, the box body is deformed under its stress, which seriously leads to the inflexibility or inability to open the door of the box body. At the same time, changing the position of the reserved hole of the fire hydrant system without authorization leads to the negative influence of various unfavorable factors on the outlet of the fire hydrant, which greatly affects the water output of the hose.

3. Automatic sprinkler system.

In building fire prevention, the automatic sprinkler system usually relies on sensing the temperature of the fire to start its sprinkler instruction. In the process of building fire water supply and drainage construction, there is often a large distance between the sprinkler and the floor, which leads to the failure of the temperature sensing element to respond in time, which further spreads the fire and is difficult to control. Or when the automatic sprinkler system for building fire fighting is constructed, it can't be constructed reasonably according to the function and pattern of the building room itself, resulting in a dead corner of sprinkler, leaving a certain security risk.

Three, building fire water supply and drainage construction problems prevention strategy

1. Establish and improve the building fire protection maintenance and maintenance mechanism. After technical construction, many construction units did not take further measures to ensure the performance of water supply and drainage facilities, which made many facilities gradually aging due to long-term use. However, due to the lack of timely maintenance, this aging state has become more and more serious. At the critical moment, these water supply and drainage equipment could not play a role at all, which delayed the fire fighting time. Therefore, after the completion of construction, the construction unit should establish a complete maintenance mechanism, regularly maintain water supply and drainage facilities, especially some commonly used fire-fighting equipment, such as fire extinguishers, to ensure their effectiveness and replace them regularly.

2. Strengthen the construction management and organize the construction in strict accordance with the design and related requirements. It can ensure the construction quality of building fire water supply and drainage to a great extent, thus eliminating the problems in construction to a great extent. At the same time, strengthening management can eliminate unfavorable factors and further eliminate problems. After the phased construction of building fire water supply and drainage is completed, experts or professionals with professional experience should be hired for inspection, which can avoid the second inspection becoming a mere formality and failing to check the key parts in time. Detection should be combined with various forms, such as visual inspection, ruler measurement, instrument detection and destructive inspection. In order to find problems in the inspection and take corresponding preventive measures in time, so as to ensure the safety and reliability of the performance of building fire water supply and drainage facilities.

3. Establish and improve the management system and do a good job in maintenance. After a set of fire-fighting facilities have passed the acceptance, it is necessary to formulate a set of perfect maintenance management system if they are to be put into normal use. The construction unit should formulate a full-time management system from the leader to the maintenance manager, and the responsibility should be assigned to people to ensure that the maintenance and management of fire control facilities are in place. The established maintenance management personnel should have certain professional knowledge, strong sense of responsibility, be specially trained and hold relevant certificates, and be familiar with system performance, operation methods and general fault handling knowledge.

Four. Concluding remarks

It can be seen from the above that, in view of the important role of building fire water supply and drainage construction in building construction, we must attach great importance to some problems that are easy to occur in building fire water supply and drainage construction, and formulate its prevention and control strategies reasonably according to design specifications and actual environmental conditions, which has certain promoting significance for ensuring building fire safety.

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