Final answer:
Public access must be prohibited to areas with LP-gas storage and transfer due to safety risks, following regulations to prevent fires and explosions by controlling temperature and pressure according to safety standards.
Step-by-step explanation:
Public access must be prohibited to areas where LP-gas (liquefied petroleum gas) is stored and transferred to ensure safety against potential hazards such as fires and explosions. Such restrictions are particularly imperative due to the physical properties of LP-gas. For instance, when LP-gas is heated, it expands rapidly, significantly increasing pressure within storage containers which can breach their limits, as explained by Gay-Lussac's Law. The safety considerations surrounding LP-gas are based on the fact that it is very flammable and that leaks can lead to fires or explosions if an ignition source is present. Additionally, in areas where LP-gas is handled, adequate ventilation, proper labeling, and protective barriers are essential to prevent inadvertent access or exposure. In more than 100 words, it's clear that details such as temperature control, warning labels, and appropriate pressure containers are critical in these environments.