REG NASA-LLIS-0293--1993 Lessons Learned Component Failure due to Application of Identification Markings on Sealing Surface.pdf
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REG NASA-LLIS-0293--1993 Lessons Learned Component Failure due to Application of Identification Markings on Sealing Surface.pdf
1、Lessons Learned Entry: 0293Lesson Info:a71 Lesson Number: 0293a71 Lesson Date: 1993-07-21a71 Submitting Organization: JSCa71 Submitted by: John McGeeSubject: Component Failure due to Application of Identification Markings on Sealing Surface Description of Driving Event: A transducer failed a mass sp
2、ectrometer leak check. The serial number of the transducer was vibro-etched onto the sealing surface causing the leak. The design drawing provided no specifications to preclude the application of the serial number onto the sealing surface.Lesson(s) Learned: Design specifications that do not adequate
3、ly address all process requirements (such as application of component identification) can result in damage to functional parts.Recommendation(s): Design drawings were changed to include specifications for the allowable position and technique for identification markings.Evidence of Recurrence Control
4、 Effectiveness: N/ADocuments Related to Lesson: N/AMission Directorate(s): Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-N/AAdditional Key Phrase(s): a71 Configuration Managementa71 Hardwarea71 Parts Materials & ProcessesAdditional Info: Approval Info: a71 Approval Date: 1993-09-13a71 Approval Name: Ron Montaguea71 Approval Organization: JSC/NS3a71 Approval Phone Number: 281-483-8576Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
