The six key points of the dust removal system should be well controlled in the completion review of the combustible dust removal system.
注重岗位除尘效力，这是工贸企业设置除尘系统的基本要求，因此要倾听员工对于整改前后的看法；查看吸尘罩的科学设计和合理设置，确认现场效果，如是否有粉尘扬出或粉屑溅出，是否按粉尘特性采用下吸或侧吸方式设置吸尘罩，确认吸尘罩口风速是否≥ 1 m/s，必要时为挡异物，吸尘罩出风口应有格栅等。
Emphasis is placed on the effectiveness of post dedusting, which is the basic requirement for industrial and trade enterprises to set up dedusting systems, so it is necessary to listen to the views of employees before and after rectification; to check the scientific design and reasonable setting of vacuum hood, and to confirm the site effect, such as whether there is dust emission or dust splashing out, whether to adopt down or side suction according to dust characteristics. Vacuum hood, to confirm whether the wind speed of the hood is more than 1 m/s, if necessary, as a shield against foreign bodies, vacuum hood outlet should have grilles, etc.
Two. Wind pipe
确认风管为镀锌钢板制作、圆形、强度不小于除尘器强度、管内风速和粉尘浓度符合标准要求的可靠性，确认风管内无粉尘沉降、管壁内积尘厚度＜ 1 mm，支风管（包括软管）长度≤ 3 m。
It is confirmed that the duct is made of galvanized steel sheet, circular, and the strength is not less than the strength of the dust collector, the wind speed and dust concentration in the duct meet the reliability requirements of the standard. It is also confirmed that there is no dust deposition in the duct, the dust thickness in the duct wall is less than 1 m m, and the length of the branch duct (including the hose) is less than 3 m.
第一，对于车间（室内）主风管，要有符合要求的检查清灰口；其法兰连接螺栓＜ 5 颗的，应有静电跨接；主风管的变径及弯头（包括支管与主管的连接弯头）应符合空气动力学的要求。
Firstly, for the main air duct in the workshop (indoor), there should be a qualified inspection clearance; if the flange connection bolt is less than 5, there should be an electrostatic spanning; the main air duct diameter and elbow (including branch pipe and main pipe connection elbow) should meet the requirements of aerodynamics.
第二，室外主风管道，进风管应≥ 90°转向后方可进除尘器，并应在距除尘器4 m 处设置隔离阀和在除尘器进风管径向处设置泄爆片（方向朝上为佳，毒性、腐蚀性、燃料粉尘不应采用），其泄爆面积≥风管截面积。
Secondly, in the outdoor main air duct, the inlet duct should be turned to the dust collector at or above 90 degrees, and the isolation valve should be set at 4 m from the dust collector and the explosion discharging sheet should be set at the radial part of the inlet duct of the dust collector.
Three. The fan
Fans should pay attention to the following 4 points in the review and acceptance of completion.
1. selection of explosion-proof fan, and a separate electrostatic grounding.
2. 电机需选用符合IP54 以上防护等级的要求。
2. motor needs to meet the requirements above IP54 protection level.
3. fan and dust collector air outlet pipe should adopt soft connection and have electrostatic cross over.
4. install muffler facilities at the outlet of the fan. If necessary, the fan should have sound insulation measures.
Four. Exhaust cylinder
The following 3 points should be noted in the review and acceptance of the exhaust gas.
1. 排气筒一般不应低于15 m高，当建筑物高≥ 14 m，则排气筒应高出建筑物2 m。
1. The exhaust pipe should not be less than 15 m in height. When the height of the building is more than 14 m, the exhaust pipe should be 2 m higher than the building.
2. the exhaust cylinder must have certain wind resistant strength and rain cap, and have independent lightning protection facilities that meet the standard requirements.
3. the exhaust manifold should have an environmental inspection mouth for sampling.
Five. Climbing platform.
In climbing the ladder, we should pay attention to the following 3 points:
1. 登高平台材质、强度，符合国家标准GB 4053-2009《固定式钢梯及平台安全要求》。
1. The material and strength of the platform meet the national standard GB 4053-2009 "Safety Requirements for Fixed Steel Ladder and Platform".
2. 护栏高度≥ 1.05 m，护栏底部设有≥ 10 cm 挡板。
2. the height of the guardrail is more than 1.05 m, and the bottom of the fence is more than 10 cm baffle.
3. steel straight ladder material and production conform to the standard requirements.
Six. Warning signs for dangerous and harmful factors
The signs and signs for dangerous and harmful factors should be set up in a standard, eye-catching, clear, correct and complete manner.