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Completed TRL 3 (started at 3, targeting 3)
This is a first of its kind effort. All previous human reliability analysis (HRA) methods are solely ground-based. The current approach used by both the Shuttle and ISS programs is CREAM (Cognitive-based Reliability Error Analysis Method) and represents a 2nd generation HRA approach. Given JSC's 50 years of collecting and analyzing human performance during in-space activities, this project will take a first shot at combining ground-based performance shaping factors (PSFs) with those considered to be space-based PSFs. The product is expected to be used in all future space mission probabilistic risk assessments (PRAs).
For crewed missions beyond LEO, human reliability is not the same as on Earth. Current space mission risk assessments assume a ground-based approach, which is now known to be non-conservative. This project is to analyze and incorporate space related performance shaping factors into an existing ground based human reliability tool that has and is being used by NASA human space programs to assist with vehicle design, training plans, operational proposals, and probability of loss of crew requirement verification. This project is a continuation of the FY14 project. FY20 will be to test this year’s product and finalize the analytical approach to be used to assess human reliability for space missions. First, by reassessing those completed to date using ground based applications, such as CREAM and THERP. The following year could result in TRL 6, if sufficient benchmarking with previous assessments can be completed. TRL 7 through 9 will be achieved through continued applications and updates with space data collected.
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