Short Title: DCS Last Published:  11/23/20 11:55:09 AM (Central)
Element: Human Health Countermeasures (HHC)
Evidence:  Report
Risk Master Logic Diagram:  Diagram
Point of Contact:  Jason Norcross
HRP Risk Status: Inactive [no current ongoing research]
Inactive Rationale

While DCS research and operational development is of high importance, this work is now funded by organizations other than HRP, in a collaborative joint effort. Details of DCS-related work that is already being done (or planned to be done) may be found in the comprehensive NASA technical paper “Integrated Extravehicular Activity Human Research and Testing Plan” (NASA/TP-2019-220232). As part of HRP’s new strategy, it will contribute to these operational efforts as needed.

Inactive Documentation:
No Inactive Documentation Available
Risk Ratings and Dispositions per Design Reference Mission (DRM) Category
DRM CategoriesMission
OperationsLong-Term Health
LxCRisk Disposition *LxCRisk Disposition *
Low Earth Orbit6 months2x2Accepted2x1Accepted
1 year2x2Accepted2x1Accepted
Deep Space Sortie1 month3x3Accepted/Optimize3x1Accepted
Lunar Visit/
1 year3x2Accepted/Optimize3x1Accepted
Deep Space
1 year3x3Accepted/Optimize3x1Accepted
Planetary3 years3x2Accepted/Optimize3x1Accepted
Note: LxC is the likelihood and consequence rating. The information above was last approved by the Human System Risk Board in 9/2016.
Risk Statement
Given that tissue inert gas partial pressure is often greater than ambient pressure during phases of a mission (primarily EVA), there is a possibility of decompression sickness (DCS).
Gaps (7)
Related Risks (0)