A First Response Crew Mask for Ammonia, Hydrazine and Combustion Products, Phase I

Metadata Updated: May 2, 2019

The increasing frequency of International Space Station (ISS) egress operations results in chemical contamination of the spacecraft environment. Among the most important contaminants are propellant residues (such as hydrazine) and their decomposition by-products, as well as coolants such as ammonia and Freon. Ammonia has a 24 hour Spacecraft Maximum Allowable Concentration (SMAC) of 7 ppm (Perry, 2010) and hydrazine has a 24 hour SMAC of 0.3 ppm (NASA/JSC 20584, March, 2001). These highly alkaline chemicals rapidly penetrate skin and coagulate proteins. Furthermore, a hydrazine fuel leak onto any hot surfaces may cause fire.

TDA Research Inc. proposes to develop a new adsorbent that can remove these contaminants to sub ppmv concentrations. In the Phase I, we will develop the adsorbent media and design a cartridge that will be incorporated into a first response crew mask. We will demonstrate the efficacy of the cartridge in removing these contaminants at full-scale in an environmental chamber (TRL 4). We will also complete the detailed design of a general purpose first response mask, including additional adsorbents and ambient temperature oxidation catalyst that will provide complete protection against all contaminants (in addition to NH3 and hydrazine, CO, volatile organic compounds and combustion by-products, such as sulfur oxides will all be removed). In Phase II, we will work with Gentex, a leading supplier of personal protection systems in fabricating the mask and cartridges. We will complete high fidelity demonstrations in an environmental chamber to fully demonstrate its capability (non-human testing at TRL 6).

Access & Use Information

Public: This dataset is intended for public access and use. License: U.S. Government Work

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Dates

Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_16793
Maintainer
TECHPORT SUPPORT
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Datagov Dedupe Retained 20190501230127
Harvest Object Id 3f3ae45b-338a-4a5b-8665-e283e8546a81
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2013-11-01
Homepage URL https://techport.nasa.gov/view/16793
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 1e610e104e033563822c198ed0a1cf9805b7a679
Source Schema Version 1.1

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