NASA system

In one such example, the construction of a building in Washington, DC, (Figure 1) was based on a money-saving method of preparing building specifications which derived from a NASA system designed to obtain quality as well as minimum cost construction of launch facilities, test centers and other structures. 

Communication of hazard information to NASA System Engineering and integration Center Director... 

NASA Systems Engineering Handbook. Washington DC National Aeronautics and Space Administration, 1995. 

NASA Systems Engineering Handbook, http //humtm.sptice.edu/old/docs/Systems Eng Handbook.pdf... 

NASA Systems Engineering Handbook (NASA/SP-2007-6105), specifically... 

The NASA system safety manual. NHB 1700.1(V-3), is one of the several system safety documents supporting NASA system safety efforts. 

NASA SYSTEM SAFETY NHB 1700.1(V3) CHAPTER 1 MANAGEMENT TECHNIQUES... 

This particular document, dated 6 March 1970, is one of the older system safety documents in use. The NASA system safety manual was revised and distributed as NHB 1700.1 (V7) (Preliminary) in the mid-1980s. 

Some of the other key documents in the NASA system safety effort include... 

Fault hazard analysis is mentioned very frequently in system safety literature, sometimes as a type of analysis and occasionally as a technique. One NASA system safety document (NHB 1700.1-V3, System Safety) describes it as the analysis to be performed after the preliminary hazard analysis for further analysis of systems and subsystems and suggests that it can be either a separate analysis or an extension of the failure modes and effects analysis (NASA 1970). Most programs today (including NASA) refer to this analysis as the subsystem hazard analysis (SSHA) and the system hazard analysis (SHA). 

NASA was an early user and developer of system safety methods for its complex systems. Most people recognize that space exploration is a risky business. The agency has introduced some concepts that are worth noting. One is risk-informed safety case, intended to determine if something is adequately safe. Another concept addresses the problem of what is adequately safe. NASA uses the term as safe as reasonably practicable. The NASA System Safety Handbook explains the concepts further (note 5). 

NASA System Safety Handbook, Volume 1. System Safety Frame-workandConceptsforbnplementation,NASAISP-20l0-5S0,Novem-ber 2011. www.hq.nasa.gov/offlce/codeq/doctree/NASASP2010580. pdf... 

Shishko R (ed) (1995) NASA systems engineering handbook (vol. SP-610S). National Aeronautics and Space Administration, Washington... 

National Aeronautics and Space Administration. 2011. NASA System Safety Handbook. NASA/SP-2010-50. Washington, DC National Aeronautics and Space Administration. 

The second example of an error in units cost the USA (NASA) 94,000,000. A Mars climate probe missed its target orbit of 150 km from the Mars surface and approached to within 60 km and burned up. The error was due to the different units used by two contractors which were not interconverted by the NASA systems engineering staff. This book uses various sets of units and the equivalences are given in Appendix A. This is designed to keep the student constantly aware of the need to watch and be aware of units. 

NASA. (1995). NASA systems engineering handbook. SP-610S. 

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