1、Lessons Learned Entry: 0027Lesson Info:a71 Lesson Number: 0027a71 Lesson Date: 1992-09-04a71 Submitting Organization: KSCa71 Submitted by: Lisa L.MusgraveSubject: Environmental Control and Life Support System (ECLSS) Servicing Console Description of Driving Event: The G02 supply from the ECLSS GO2 s
2、ervicing console can be utilized to feed oxygen directly into the astronauts helmets in support of the flight crew breathing test during OMI S0017 (at T-4 minutes). The existing oxygen panel uses gaseous nitrogen as the regulator “push“ pressure (6000 psig) to operate the ECLSS servicing console. Th
3、ere is a possibility of nitrogen intrusion into the oxygen feed line if a regulator failure occurs.Lesson(s) Learned: Failure of ECLSS servicing console regulator could introduce gaseous nitrogen into astronauts breathing supply.Recommendation(s): Redesign the ECLSS GO2 panels to eliminate the use o
4、f gaseous nitrogen while supporting the flight crew breathing test.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): a71 Space Operationsa71 Explor
5、ation SystemsAdditional Key Phrase(s): a71 Facilitiesa71 Flight Operationsa71 Flight Equipmenta71 Hardwarea71 Hazardous/Toxic Waste/Materialsa71 Launch Processa71 Personal Protective Equipmenta71 Pressure Vesselsa71 Test & VerificationAdditional Info: Approval Info: a71 Approval Date: 1994-06-01a71 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-,-,-
