1、Lessons Learned Entry: 0451Lesson Info:a71 Lesson Number: 0451a71 Lesson Date: 1991-07-03a71 Submitting Organization: JSCa71 Submitted by: L. UnderwoodSubject: Distributor Conformance Certification Description of Driving Event: When a quick disconnect was checked for compatibility with hydrazine the
2、 “O“ seal disintegrated. It was found to have been made of material other than the required Ethylene-Propylene Rubber (EPR) material. The distributor had provided a certificate of conformance traceable to a seal manufacturers lot number. Upon a request for the manufacturers certificate of conformanc
3、e they could not provide traceability for 40 pieces of a lot of 500 seals. They provided traceability for 460 of the seals.Lesson(s) Learned: Errors in a distributors materials conformance certification resulted in use of incompatible material used to assemble quick disconnect.Recommendation(s): Req
4、uest a copy of manufacturers material lot certification along with distributors conformance certification when purchasing materials.Evidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: N/AProvided by IHSNot for ResaleNo reproduction or networking permitted without license fr
5、om IHS-,-,-Mission Directorate(s): N/AAdditional Key Phrase(s): a71 Parts Materials & Processesa71 Safety & Mission AssuranceAdditional Info: Approval Info: a71 Approval Date: 1996-09-30a71 Approval Name: Ron Montaguea71 Approval Organization: JSC/NA3a71 Approval Phone Number: 281-483-8576Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
