Accession Number:

ADA210882

Title:

Performance Evaluation of the Puritan-Bennett Crewmember Portable Protective Breathing Device as Prescribed by Portions of FAA Action Notice A- 8150.2

Descriptive Note:

Final rept.

Corporate Author:

FEDERAL AVIATION ADMINISTRATION WASHINGTON DC OFFICE OF AVIATION MEDICINE

Report Date:

1989-05-01

Pagination or Media Count:

101.0

Abstract:

This study was undertaken, on request, to evaluate the performance of the Puritan-Bennett portable crew protective breathing device for contaminant leaks. O2, CO2 levels, inhalationexhalation pressure, and inhalation temperature. Tests were conducted in the facilities of the FAA Civil Aeromedical Institute CAMI in Oklahoma City, OK, test chamber and altitude chamber. The duration and workload profile are described in FAA Action Notice A-8150.2. The test sequence followed an iterative process in which problems were identified, modifications made to correct deficiencies, and the device retested until problems could be solved. The test sequence was as follows First, the neck seal material was not elastic enough and a more suitable material was identified and substituted Second, the size of the opening of the neck seal had to be reduced to protect the smaller subjects Third, identification of increased CO2 resulting from the occasional inversion of the exhalation valve was found, and was solved by improving the valve support design Fourth, leaks encountered at locations other than neck seals were overcome through improved quality control for more impermeable seams and hardware seals. Thus, with adequate quality assurance, the final version of the Puritan-Bennett crewmember portable protective breathing device, as tested at CAMI, would meet the requirements of FAAs Action Notice A-8150.2 regarding contaminant leak protection O2 concentration, CO2 concentration, inhalationexhalation pressures and inhalation temperature. Keywords Breathing apparatus Smoke.

Subject Categories:

  • Command, Control and Communications Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE