NCCER Safety Practice Test

The correct answer is based on OSHA's standards for the safe storage of acetylene and oxygen cylinders, which are important for preventing hazardous reactions. Storing these cylinders properly is crucial to ensure workplace safety and reduce the risk of fire or explosion.

When acetylene and oxygen cylinders are stored together, OSHA requires either a fire-resistive wall that is at least 5 feet high or a separation of at least 20 feet. This regulation is designed to minimize the potential hazards that can arise from having these two gases in proximity, as they can react dangerously if exposed to heat, sparks, or flames. By enforcing this safe distance or suitable protective barriers, OSHA helps maintain a safe environment in areas where these materials are used or stored.

Understanding this regulation is essential for workers handling these substances, as proper storage can significantly reduce risks in the workplace.