[Objective] Work safety accidents in urban gas pipeline networks have been increasing in frequency in recent years in China. causing significant negative impacts on public security. However. existing research in this area lacks quantitative analysis of the causes behind these accidents and fails to identify key pathways leading to these disasters of different types. https://www.bekindtopets.com/flash-grab-Viqua-F4-Ultraviolet-Water-System-Powered-by-UVMax-36-gpm-top-savings/