What is the recommended distance for storing gas tanks from heat sources?

The recommended distance of at least 10 feet for storing gas tanks from heat sources is based on safety standards that aim to reduce the risk of fire and explosion. Gas tanks, especially those containing flammable gases, are at risk of pressure buildup due to heat exposure. This heat can cause the gas inside the tank to expand, potentially leading to dangerous situations, including leakage or rupture.

Keeping tanks at a distance of at least 10 feet from any heat sources helps ensure that they remain at a safe temperature, minimizing the risk of ignition and protecting not only the tanks but also those who may be nearby. This guideline is widely recognized in industrial safety practices and aligns with recommendations from organizations focused on health and safety in the workplace.

The other options suggest shorter distances that may not provide adequate protection against heat exposure, thus raising safety concerns. Adhering to the 10-foot distance allows for an increased margin of safety in environments where gas tanks are stored or used.