REG NASA-LLIS-0331-1993 Lessons Learned - Quality Assurance Expertise in Special Technical Areas (e g optics).pdf

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1、Lessons Learned Entry: 0331Lesson Info:a71 Lesson Number: 0331a71 Lesson Date: 1993-08-16a71 Submitting Organization: MSFCa71 Submitted by: Baggs, EllisSubject: Quality Assurance Expertise in Special Technical Areas (e.g. optics) Description of Driving Event: The Hubble Space Telescope did not perfo

2、rm to the requirements of the contract. A spherical aberration was attributed to the spacing between the field lens and the lower mirror of the Reflective Null Corrector. It was concluded that the problems would likely have been discovered by Quality Assurance oversight if these functions had been c

3、onducted in accordance with the Product Assurance Plan and monitored by personnel trained in optical technology. There were other problems, which were not as drastic as the spherical aberration, which probably would have been discovered also. These problems led to considerable embarrassment to NASA,

4、 expenditure of additional funds to determine the cause and plan for on-orbit repair, and a reduced scientific return.Lesson(s) Learned: If quality assurance personnel responsible for oversight of the quality of highly technical state-of-the-art development do not have a degree of expertise in that

5、technical area, the likelihood of discovering QA problems decreases significantly.Recommendation(s): The NASA organization responsible for product assurance oversight should augment their staff to provide independent expertise in special highly technical areas (such as optics technology) where major

6、 program objectives are at stake.Evidence of Recurrence Control Effectiveness: Collective wisdom * Memorandum and Report from George Rodney, Associate Administrator, Office of Safety and Mission Quality, NASA. Report entitled “SRM & QA OBSERVATIONS AND Provided by IHSNot for ResaleNo reproduction or

7、 networking permitted without license from IHS-,-,-LESSONS LEARNED“.Documents Related to Lesson: N/AMission Directorate(s): a71 Exploration Systemsa71 Sciencea71 Space Operationsa71 Aeronautics ResearchAdditional Key Phrase(s): a71 Safety & Mission AssuranceAdditional Info: Approval Info: a71 Approval Date: 1994-08-17a71 Approval Name: Baggs, Ellisa71 Approval Organization: EH44a71 Approval Phone Number: 205-544-3293Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-