Before reading this article, please click on the blue font " China Chemical Safety Association " under the heading of this article and then click on " Follow ", so that you can receive the article for free. Share every day, it's a free subscription, please rest assured! Safety testing is a very important part of the hot work. The representativeness and accuracy of the analysis data are related to whether it can be safely operated. We summarize the safety inspection and testing for more than 20 years, sort out the various links in the actual inspection, and summarize the "five-step work method for safety inspection", which is a supplement to the relevant safety regulations. Ask when, location, project, site contact (Note: "One pick" is the current common inspection work release and acceptance method) Second check fine check to ensure normal ◎ Is the detector within the calibration period? ◎ Is the contact good? ◎ Is the battery full? ◎ Whether the air connection is tight ◎ Are the accessories complete? Three questions to enter the scene detailed inquiry ◎ The notification party shall handle the fire or the restricted space (special attention should be paid to the pipeline replaced by nitrogen) ◎ Is it disconnected from the system and is equipped with a blind plate? ◎ The name and nature of the material in the pipeline or container Four look carefully to check the status ◎ Whether the temperature in the pipeline or container is close to the ambient temperature ◎ Whether there is a large amount of water or liquid material remaining in the pipeline ◎ Is it disconnected from the system and correctly installed blind plate? Five inspections, careful operation, accurate detection ◎ Zero in the air fresh ◎ For large containers and long pipelines, the sampling time is longer, and multiple sections (azimuth) are sampled separately to ensure representativeness. ◎ Accurately define the scope of environmental sampling and make adjustments based on wind direction ◎ Look carefully for pipelines, containers, trenches, etc. within the scope of environmental sampling to see if there are any leaks. ◎ Avoid detectors inhaling liquids ◎ If it is difficult (not) to volatilize flammable materials at the job site, it should be clearly indicated and informed in the remarks column of the analysis sheet. The following is an example of the practicality of the "safety detection five-step work method". During a large-scale parking inspection and maintenance, an enterprise fired at a height of 4 meters from the platform of the device. The open fire welding slag fell to the platform floor. Due to some cracks in the cement floor, materials had been washed into the crack and immediately triggered. explosion. In this accident, the analysts made mistakes in the definition of the environment-like area. Generally, the welding slag plane splattering distance is about 2 meters. According to this, when the ground area is hot, the working point is the center of the circle, and the radius is 3 meters to draw the circle as the detection area, focusing on the pipeline and flange in the area. The leak point of the container is used as a basis for comprehensively judging the state of the hot environment. If the fire point is more than 2 meters above the ground, in addition to the detection equipment and the near environment, it is necessary to detect the equipment or ground in the direction of the falling of the welding slag, and combine the wind, wind direction and other factors at the time to extend the detection range below the working point downward. . In the actual safety inspection, we strictly follow the “ five-step method †procedure, and find out the safety hazards in time to avoid accidents. (Source: Team Security) Good things not only to collect, but also to forget to share friends Submersible Pool Led Lights,Waterproof Led Lights,Underground Pool Led Lights,Concrete Pool Light Guangzhou Qshine Pool Lights Manufacture Co., Ltd , https://www.qshinepoollight.com
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