2022-11-16 17:45:27
What methods can be adopted to make improvements?Electromechanical equipment installation projectsWhat is the installation process?
See GB50193-93 (2010 edition) 3.1.2.2, 3.1.2.4, 7.0.5, 5.1.7.4. Different extinguishing agents are used depending on the type of fire. When spraying extinguishing agent, the gas agent evaporates quickly, achieving the intended extinguishing effect. When spraying gas extinguishing agent, the maintenance area should be completely sealed. After the fire was extinguished, the gas remained in the maintenance area. When personnel enter the maintenance area, their lives are at risk. Therefore, harmful gases should be vented outdoors before entering the maintenance area. Ventilation can be described as natural or mechanical ventilation.
1. There is no natural ventilation in the basement (no external windows) maintenance area, and no windows or fixed window sashes in the above-ground maintenance area. Mechanical and electrical equipment installation projects should install mechanical exhaust systems. The exhaust volume should ensure that the maintenance area is ventilated more than 4 times per hour, and the exhaust outlet should be set within 460mm above the ground.
2. Set the local start switch in a convenient location outside the maintenance area.
3. Before spraying gas extinguishing agent, the fan, air outlet, and fire valve should be automatically closed.
4. Mechanical exhaust equipment should be installed between the basement storage boxes (no exterior windows), and the exhaust outlet should lead directly outdoors.
5. Set up a pressure relief port within the maintenance area, with the area of the pressure relief port calculated based on the extinguisher's spray speed.
Electromechanical equipment installation projectsCommon installation issues include:
Rooms using gas fire suppression systems will produce toxic and harmful gases after the fire is extinguished.
1. There is no mechanical exhaust system in the basement (no external windows) maintenance area; no windows or fixed window sashes or between gas cylinders in the above-ground maintenance area.
2. An exhaust system is installed, but some start switches are not located outside the maintenance area for convenient operation.
3. If there are no valves in ventilation or air conditioning pipelines that can be electrically closed, they can be closed before spraying the extinguishing agent.
4. Pressure relief vents are not installed within the maintenance area as required.
Before installing electromechanical equipment, make thorough preparations before construction. After entering the site, arrange the materials neatly.
During material transfer, care must be taken not to damage the material, attention to personnel safety, and protective measures such as helmets, gloves, and protective shoes should be adopted; After material transfer is completed, engineers provide on-site guidance and organize the construction sequence for the workers. In the construction of electromechanical equipment installation projects, the construction sequence is a crucial factor determining project quality and efficiency.
