If the gas stove was left open for hours but the LPG tank is closed, it is likely safe to open the gas stove. However, it's crucial to take certain precautions to ensure your safety. Here's what you should do:
Ventilate the area: Open windows and doors to allow fresh air to circulate and ventilate the space. This helps to disperse any lingering gas and reduce the risk of a buildup.
Do not use open flames or create sparks: Avoid using any open flames, such as matches, lighters, or candles, in the area until the space has been properly ventilated.
Turn off the gas stove: If the gas stove is still open, ensure that it is turned off immediately. Do not attempt to ignite it until the area has been ventilated.
Check for gas odors: Once the area is ventilated, use your sense of smell to check for any lingering gas odors. If you still detect a strong gas smell, do not use the gas stove and contact a professional for assistance.
Conduct a leak test: If you are uncertain about the safety of using the gas stove, you may want to conduct a leak test. Apply a mixture of soapy water to the gas connections, including the hose and fittings. If you see bubbles forming, it indicates a gas leak, and you should refrain from using the stove. In such cases, contact a professional for assistance.
It's important to prioritize your safety and exercise caution when dealing with gas-related situations. If you have any doubts or concerns, it is always best to seek the advice of a professional gas technician or contact your gas provider for guidance.