For which compressed gases and what amounts are permits required?

Permits are required for specific types of compressed gases in certain quantities to ensure safety and regulatory compliance in facilities handling these substances. The requirement for Carbon Dioxide at 4500 pounds and Oxidizing gases at 504 pounds indicates that these gases pose significant risks, which can include pressure-related hazards and reactivity risks.

The threshold amounts for requiring permits are set based on safety regulations and the potential hazards associated with these gases. Carbon Dioxide, although non-flammable, can cause suffocation in high concentrations and requires careful monitoring and management. Oxidizing gases, like oxygen, can intensify fires and require stringent controls in terms of storage, handling, and transportation. These regulations ensure that facilities take the necessary precautions to manage the associated risks effectively.

In contrast, the other options do not align with the regulatory requirements for permits, either due to incorrect quantities or inappropriate classifications of gases. Understanding these specific requirements is vital for ensuring the safety of both personnel and patients in environments such as hospitals and medical facilities.