From the Document, "Oxygen is used as a medical treatment for chronic and acute medical conditions and can be administered in medical facilities, by emergency medical service providers, and in home settings. In a disaster, access to oxygen can be challenging. Utility outages can impact electricity dependent machines, transportation and shipping difficulties can limit distribution of oxygen, and damage to oxygen generation and distribution plants can lead to reduction in supply. This ASPR [Assistant Secretary for Preparedness and Response] TRACIE [Technical Resources, Assistance Center, and Information Exchange] fact sheet provides information on the types of oxygen therapy and the types of oxygen supplies generally available. It also includes information on the typical sizes and length of use of various oxygen storage methods."
ASPR TRACIE: https://asprtracie.hhs.gov/