3.2, the installation of quality requirements
In day-to-day inspection of fire inspection and engineering work, I found the construction quality problems due to the installation of smoke caused by fire or valve failure to open problems, exhaust valves, exhaust port, fire dampers, fire reset Tuyere difficulties. This should be of great importance to the construction side, note the following installation requirements.
3.2.1, fire damper, exhaust valve should be strictly according to plan the construction of a separate hanger for support in order to avoid air duct at a high temperature deformation, the impact of valve function.
3.2.2, valves in the ceiling or in the installation of air duct should be on the board in the ceiling or walls of air duct into the hole for maintenance, the general into the pore size of not less than 450 × 450mm, in the conditions, the ceiling manholes can be reduced to 300 × 300mm.
3.2.3, fire damper and a firewall (or floor) between the duct should be used δ ≥ 1.5mm steel plate production, then the best for external use in the wind pipe insulation or refractory materials incombustibility protection, to ensure that firewall fire-resistant properties.
3.2.4, in the mechanical side of the operation of the valve should have a clear space of 350mm in order to facilitate maintenance.
4, fire, smoke valve in the works of some of the problems that exist in
I built the fire in the day-to-day trial, engineering check and acceptance work, found fire and smoke valves have a number of problems in the following for peer reference.
4.1, the fire control room to send the return air duct in his Department does not have to wear fire damper wall.
Pre-trial process in building and found that some of the works on the design of consumer control room to send back to the wind pipe through walls Department in its non-damper, which is "automatic fire alarm system design specifications" GB50116-98 in the first inconsistent with Article 6.2.2. For the purpose of fire damper fire control room in order to ensure fire safety.
4.2, fire control equipment to smoke, smoke control facilities, display imperfect
GB50116-98 in accordance with norms of the first provisions of Article 6.3.9: Fire Alarm confirmation, to stop supply of the parts of the air-conditioning, electric fire damper to close and receive the feedback signal; At the same time to start the relevant parts of the smoke and exhaust fan , exhaust valve, and to receive the feedback signal. Some projects can not be linked to control sub-control exhaust valves, exhaust port, and some can not receive the feedback signal, valves do not reflect the situation of the headstock.
4.3, pipeline gas fire extinguishing system without pneumatic damper.
GB50116-98 the first 6.3.4.3 requires: "In the delayed phase, should be self-closing fire doors, windows, ventilation and air conditioning system to stop the closure of fire dampers on the site." This requires a network of gas fire extinguishing system, must be installed on gas Dynamic fire dampers, and fire control equipment linked. In the absence of such features in the individual projects.
4.4, air supply and exhaust duct without sharing the remote control
The basement of some building, car parks combined use of air supply and exhaust duct, we found blower and exhaust valve in front of the scene can only manually, the control room of the remote control can not be achieved in normal times, blower, its front end valve was open the situation, in the event of fire, will take people to the scene to close the fan before the cut-off valve, which is very practical, directly affect the extraction system. Therefore, it is proposed to increase its cut-off valve remote control functions.
5, system debugging and maintenance and management of linkage
Fire damper, exhaust valve works in practice is not independent of Fire smoke products, but in the entire fire control system of linkage has its own unique logic of the relationship between linkage. Therefore, in order to ensure that its fire-fighting system to play a role in the system prior to acceptance by linkage requirements, must be fully debug, so that ventilation and air conditioning and smoke control system to meet regulatory requirements. Person should be carried out after acceptance of a planned day-to-day maintenance and management in order to protect the body in a normal situation, in the role of smoke in the Fire play their full role.
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