Hydrant system
1, the fire pool float valve is not installed.
2. The valve on the suction pipe of the fire pump adopts a butterfly valve, and the suction pipe adopts concentric reduction. There is no pressure gauge, drain valve, pressure relief valve on the outlet pipe.
3. The one-way valve on the outlet pipe of the fire tank is installed on the riser and the fire tank is free of water level indicator.
4. The water pump adapter is far away from the water intake of the outdoor fire hydrant or fire pool. It is not located next to the channel. It is installed under the glass curtain wall. The installation height is not 0. The system is not marked. The direction of the check valve is not correct. The service valve is not in place. Normally open state.
5, the pipe diameter DN ≤100 using welding, pipe sway bracing is too small, the outdoor pipe did not do insulation measures, the pipe through the wall or floor without additional casing, pipe pressure test, flushing and tightness test Not strictly in accordance with the requirements of the specification.
Automatic sprinkler system
1. The height of the alarm valve from the ground is not 1.2m. Install fire hydrant on the pipeline behind the alarm valve.
2, poor reliability of pressure switch.
3, the pipeline is not equipped with a retractor.
4. The hydraulic bell is not located in the public passageway, and it is indoor or duty room.
5. The pressure test, flushing and rigorous testing of the pipeline are not strictly performed in accordance with the requirements of the code.
6. No inspection port is provided at the end of the water discharge. The end test device is equivalent to the drain pipe. The diameter of the end test device is less than 25mm, and the pressure gauge is not set.
7. The distance between the shower head and the ceiling is more than 30cm. No heat collecting cover is installed on the upright base and the vertical mounted shower head.
Foam fire extinguishing system
1. The layout of foam nozzles is unreasonable, so that some parts of the equipment cannot be protected by foam nozzles.
2. There is no metal hose at the riser and horizontal pipe.
3. The coloring of the pipeline is not correct. The mixed liquid pipeline shall be marked with red or red rings. The feed pump and the water supply pipeline shall be painted green.
Gas fire extinguishing system
1. There is a leakage phenomenon in the header pipe, and the swaying bracket is missing. The direction of the one-way valve on the infusion pipe is reversed.
2. There is no protective sleeve at the bearing wall.
3. The fire extinguishing panel of the independent system is installed in the unmanned storage room. Sound and light alarms, gas release lamps, and emergency start buttons are not installed at the door of the protection zone.
4. The pressure test, flushing, and rigor testing of the pipeline are not strictly performed in accordance with the specifications.
Fire separation equipment
1. There are a lot of gaps above the fire shutters, there are no measures to stop the fire from spreading, and the reels and motors have no fire protection measures.
2. There is no sealing groove on the fire door frame, and no sealing strip made of incombustible material is provided.
3. Fire doors and fire locks are open in the wrong direction and are not opened in the direction of the evacuation opening.
4. The installation of the hardware on the fire door is not complete, and the fire-resistant glass is not installed. The fire-resistance rating of the fire door is different from that of the steel fire door.
5. The pipeline wells and cable wells are not separated by fire or separated tightly.
6. The fireproof grade of fireproof partition material is less than 0.5h.
7. The embedded depth of the fire shutter curtain panel in the guide rail is not enough.
8, fire shutter doors embedded steel spacing greater than 60mm.
9. The distance between the seat of the fire shutter and the floor is greater than 20mm.
Smoke control system
1. The connection between the metal shaft and the air supply valve (exhaust valve) is not firm and sealed, resulting in a large leakage.
2. The brick shaft has holes and the inner surface is not smoothed with mortar.
3. Between the pressurized air supply shaft and the smoke exhaust shaft, the air supply shaft and the elevator shaft are separated by a brick wall and not sealed. The shaft is not sealed at the bottom.
4. A 280°C exhaust valve was installed at the fire damper at 70°C, and a 70°C fire damper was installed at the 280°C exhaust smoke damper.
5. There are debris in the shaft blocking the shaft and making the system unable to work properly.
6. No deflector is installed at the connection between the blower and the shaft.
7. The smoke damper valve is not installed at the suction inlet of the exhaust fan.
8, fire dampers, smoke fire dampers do not have a separate bracket.
9. An exhaust fan is installed at the place where the smoke prevention fan is installed during installation, and a smoke prevention fan is installed at the place where the exhaust fan is installed.
10. The additional partitions in the basement damaged the original smoke exhaust system. Some of the exhaust fumes were blocked by walls or closed in the room.
Automatic fire alarm system
1, the system wiring is not reasonable, such as the line color is not uniform, the line is not solid, the school line is not recorded, the terminal block is not standard, wiring error, hidden pipe protection pipe is not in place, etc.; the fire-fighting telephone lines and alarm linkage line wear In the same line, weak and strong lines are laid in the same bridge or slot.
2. Some projects have an insulation resistance of less than 20 MΩ, and some of them are only 0.5 MΩ, which affects the system performance. Work ground and protective grounding are not done well, and there is no ground resistance inspection record. The alarm controller's power connection is a plug connection. The wires in the alarm control cabinet are not numbered and are not tied.
3. The installation of the fire detector is not firm enough, and it is too close to the position of the tuyere and the beam. The detector confirms that the direction of the lamp is not correct. Manual alarm button installation height does not meet the specification requirements. Repeated display (floor display) is installed at a higher position.
1, the fire pool float valve is not installed.
2. The valve on the suction pipe of the fire pump adopts a butterfly valve, and the suction pipe adopts concentric reduction. There is no pressure gauge, drain valve, pressure relief valve on the outlet pipe.
3. The one-way valve on the outlet pipe of the fire tank is installed on the riser and the fire tank is free of water level indicator.
4. The water pump adapter is far away from the water intake of the outdoor fire hydrant or fire pool. It is not located next to the channel. It is installed under the glass curtain wall. The installation height is not 0. The system is not marked. The direction of the check valve is not correct. The service valve is not in place. Normally open state.
5, the pipe diameter DN ≤100 using welding, pipe sway bracing is too small, the outdoor pipe did not do insulation measures, the pipe through the wall or floor without additional casing, pipe pressure test, flushing and tightness test Not strictly in accordance with the requirements of the specification.
Automatic sprinkler system
1. The height of the alarm valve from the ground is not 1.2m. Install fire hydrant on the pipeline behind the alarm valve.
2, poor reliability of pressure switch.
3, the pipeline is not equipped with a retractor.
4. The hydraulic bell is not located in the public passageway, and it is indoor or duty room.
5. The pressure test, flushing and rigorous testing of the pipeline are not strictly performed in accordance with the requirements of the code.
6. No inspection port is provided at the end of the water discharge. The end test device is equivalent to the drain pipe. The diameter of the end test device is less than 25mm, and the pressure gauge is not set.
7. The distance between the shower head and the ceiling is more than 30cm. No heat collecting cover is installed on the upright base and the vertical mounted shower head.
Foam fire extinguishing system
1. The layout of foam nozzles is unreasonable, so that some parts of the equipment cannot be protected by foam nozzles.
2. There is no metal hose at the riser and horizontal pipe.
3. The coloring of the pipeline is not correct. The mixed liquid pipeline shall be marked with red or red rings. The feed pump and the water supply pipeline shall be painted green.
Gas fire extinguishing system
1. There is a leakage phenomenon in the header pipe, and the swaying bracket is missing. The direction of the one-way valve on the infusion pipe is reversed.
2. There is no protective sleeve at the bearing wall.
3. The fire extinguishing panel of the independent system is installed in the unmanned storage room. Sound and light alarms, gas release lamps, and emergency start buttons are not installed at the door of the protection zone.
4. The pressure test, flushing, and rigor testing of the pipeline are not strictly performed in accordance with the specifications.
Fire separation equipment
1. There are a lot of gaps above the fire shutters, there are no measures to stop the fire from spreading, and the reels and motors have no fire protection measures.
2. There is no sealing groove on the fire door frame, and no sealing strip made of incombustible material is provided.
3. Fire doors and fire locks are open in the wrong direction and are not opened in the direction of the evacuation opening.
4. The installation of the hardware on the fire door is not complete, and the fire-resistant glass is not installed. The fire-resistance rating of the fire door is different from that of the steel fire door.
5. The pipeline wells and cable wells are not separated by fire or separated tightly.
6. The fireproof grade of fireproof partition material is less than 0.5h.
7. The embedded depth of the fire shutter curtain panel in the guide rail is not enough.
8, fire shutter doors embedded steel spacing greater than 60mm.
9. The distance between the seat of the fire shutter and the floor is greater than 20mm.
Smoke control system
1. The connection between the metal shaft and the air supply valve (exhaust valve) is not firm and sealed, resulting in a large leakage.
2. The brick shaft has holes and the inner surface is not smoothed with mortar.
3. Between the pressurized air supply shaft and the smoke exhaust shaft, the air supply shaft and the elevator shaft are separated by a brick wall and not sealed. The shaft is not sealed at the bottom.
4. A 280°C exhaust valve was installed at the fire damper at 70°C, and a 70°C fire damper was installed at the 280°C exhaust smoke damper.
5. There are debris in the shaft blocking the shaft and making the system unable to work properly.
6. No deflector is installed at the connection between the blower and the shaft.
7. The smoke damper valve is not installed at the suction inlet of the exhaust fan.
8, fire dampers, smoke fire dampers do not have a separate bracket.
9. An exhaust fan is installed at the place where the smoke prevention fan is installed during installation, and a smoke prevention fan is installed at the place where the exhaust fan is installed.
10. The additional partitions in the basement damaged the original smoke exhaust system. Some of the exhaust fumes were blocked by walls or closed in the room.
Automatic fire alarm system
1, the system wiring is not reasonable, such as the line color is not uniform, the line is not solid, the school line is not recorded, the terminal block is not standard, wiring error, hidden pipe protection pipe is not in place, etc.; the fire-fighting telephone lines and alarm linkage line wear In the same line, weak and strong lines are laid in the same bridge or slot.
2. Some projects have an insulation resistance of less than 20 MΩ, and some of them are only 0.5 MΩ, which affects the system performance. Work ground and protective grounding are not done well, and there is no ground resistance inspection record. The alarm controller's power connection is a plug connection. The wires in the alarm control cabinet are not numbered and are not tied.
3. The installation of the fire detector is not firm enough, and it is too close to the position of the tuyere and the beam. The detector confirms that the direction of the lamp is not correct. Manual alarm button installation height does not meet the specification requirements. Repeated display (floor display) is installed at a higher position.
Fireproof Powder Coating For Storage Cabinet
Fireproof powder coating for storage cabinet
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Chongqing Yitumei New Materials Co., Ltd. , https://www.cqettume.com