Final answer:
The question addresses safety protocols for the storage of flammable gases over a specified gallon capacity. The contents must be clearly labeled with a 'NO SMOKING' sign, due to the fire risks involved with such gases, which are heavier than air and can accumulate near the ground.
Step-by-step explanation:
The student's question pertains to safety and regulatory requirements for the storage of flammable gases, such as propane and butane. Bulk storage of flammable gases must follow strict guidelines to prevent fire hazards, given that these gases are heavier than air and accumulate near the ground if there is a leak. In the interest of safety, these tanks need to be clearly labeled with the name of the contents and a "NO SMOKING" sign. The latter is crucial, as smoking can ignite flammable gases, leading to fires or explosions. Furthermore, the density of different gases determines how they will behave if they escape into the air. For instance, natural gas, primarily methane, is lighter than air and thus can be vented through an upper window while heavier bottled gases like propane and butane will pool near the floor, creating a more severe fire hazard. It is also important to consider the effects of temperature on gas storage, as higher temperatures can cause gas pressure to increase, potentially leading to container failure if it exceeds the safety factor limits.