HQ Air National Guard Bureau Request for Hazardous Materials Waiver per AFMAN 24-204 for the MODS-75
Abstract
Headquarters Air National Guard Bureau Command requested the U.S. Air Force School of Aerospace Medicine provide modeling data of the maximum oxygen concentration aboard mobility aircraft used by the Air National Guard (C-130, C-5, C-17, KC-10, and KC-135) when transporting a liquid oxygen unit, the Mass Oxygen Distribution System (MODS-75). The AIHA Press mathematical model for estimating occupational exposure to chemicals was used to estimate the maximum oxygen level in the cargo compartment of the mobility aircraft (C-130, C-17, C-5, KC-10, and KC-135). The input variables to the model are the initial oxygen concentration, the volume of the aircraft in cubic meters, the ventilation rate of the cargo area in cubic meters per minute, and the emission rate of oxygen in milligrams per minute. Output of the model would be the oxygen level in milligrams per cubic meter (mg/m3) over time. A worst-case scenario of 14 hours was used. The model was assessed with two pressures. The first was the operation of the aircraft on the ground, and the second was with an assumed pressurization of the aircraft at 8,000 feet equivalent altitude. The MODS-75 with liquid oxygen and up to 10 MODS-75 units will not exceed the maximum oxygen level of 23.5% inside all the aircraft assessed (C-130, C-17, C-5, KC-10, and KC-135).
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 28, 2012
- Accession Number
- ADA567526
Entities
People
- Peter Lurker
Organizations
- United States Air Force School of Aerospace Medicine