Core Viewpoint - The article emphasizes the increased demand for gas during winter and highlights the associated safety risks, particularly carbon monoxide poisoning and gas leaks, urging both households and restaurants to adopt proper gas usage practices [1][2]. Group 1: Household Gas Safety - The main safety hazards in household gas usage during winter are insufficient combustion and poor ventilation [1]. - The use of direct exhaust water heaters is dangerous as they lack a proper exhaust system, leading to indoor gas exposure; these products are now banned, and households still using them should replace them promptly [1]. - Improper installation of gas water heater exhaust pipes can cause backflow of exhaust gases into the home; regular checks and corrections by gas companies or professionals are necessary [1]. - The use of incompatible "energy-saving products" can lead to incomplete combustion and carbon monoxide production, posing significant risks [1]. - Insufficient indoor ventilation during winter can lead to carbon monoxide buildup; proper ventilation is essential, and any abnormal flame color should prompt immediate action [1]. Group 2: Restaurant Gas Safety - The restaurant industry has high gas consumption and usage frequency, necessitating strict adherence to gas safety protocols [2]. - Establishing a robust gas safety management system with designated personnel and regular employee training and emergency drills is crucial [2]. - Restaurants must avoid using "black gas" and ensure the use of legitimate gas sources, reporting any illegal activities related to gas supply [2]. - Ensuring the safety of gas facilities includes proper installation of gas alarms and automatic shut-off devices, with regular testing and maintenance [2]. - Key winter gas usage reminders include avoiding dangerous gas appliances, maintaining good ventilation, and conducting regular equipment checks [2].

Core Viewpoint - The article emphasizes the safety hazards associated with gas usage during winter and provides three key preventive measures to mitigate these risks [1][2]. Group 1: Common Safety Hazards - The use of direct exhaust water heaters poses a significant risk as they do not have a flue system, leading to the potential for carbon monoxide poisoning in enclosed spaces [1]. - Improper installation of gas water heater exhaust pipes can result in backflow of combustion gases into the living area, especially if the pipes are not fully extended outdoors or are obstructed [1][2]. - Many so-called energy-saving products available in the market, such as "energy rings" and "wind shields," are incompatible with gas appliances and can lead to incomplete combustion, increasing the risk of carbon monoxide exposure [2]. Group 2: Preventive Measures - It is crucial to avoid using dangerous gas appliances and to ensure proper ventilation in enclosed spaces to prevent carbon monoxide buildup [2]. - Regular checks of gas equipment and installations are essential to identify and eliminate potential hazards [2]. - Observing the color of the flame from gas appliances can indicate combustion efficiency; a blue flame indicates proper combustion, while yellow or red flames suggest incomplete combustion, necessitating immediate ventilation [2].