1、Lessons Learned Entry: 0154Lesson Info:a71 Lesson Number: 0154a71 Lesson Date: 1992-10-08a71 Submitting Organization: KSCa71 Submitted by: David PenningtonSubject: Pneumatic and Fluid Quick Disconnects. Description of Driving Event: The quick disconnect/filter assemblies are designed to provide a di
2、sconnect interface and remove all solid particles which exceed 25 microns. The fluids being filtered include hydrazine (N2H4), GN2, lube oil, and water. The ground half QD assemblies interface the GSE at the ground umbilical carriers S70-0757 and S70-0758 which provide structural support and fluid c
3、ontainment. If the QD is mated incorrectly, it may cause the QD to leak N2H4 during fill/drain operations.Lesson(s) Learned: The pneumatic and fliud quick disconnects are the same size and located close enough to easily allow misconnection within APU carrier plates.Recommendation(s): Replace all sim
4、ilar and same size connectors with keyed or different sized connectors.Evidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-N/AMission Directorate(s): N/AAdditional Key Phrase(s
5、): a71 Configuration Managementa71 Ground Operationsa71 Ground EquipmentAdditional Info: Approval Info: a71 Approval Date: 1994-06-15a71 Approval Name: James G. Klinea71 Approval Organization: KSC/HEIa71 Approval Phone Number: 407-867-7614Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
