1、Lessons Learned Entry: 0037Lesson Info:a71 Lesson Number: 0037a71 Lesson Date: 1992-09-18a71 Submitting Organization: KSCa71 Submitted by: David PenningtonSubject: Vacuum Servicing Unit Description of Driving Event: The vacuum servicing units will provide the capability to evacuate the power reactan
2、t storage and distribution (PRSD) tanks and relief line. The unit provides a place for GN2 to accumulate, and an ignition source to ignite these gases. Loss of GN2 purge to the vacuum servicing unit could result in fire or explosion leading to flight hardware damage or injury to personnel.Lesson(s)
3、Learned: Loss of GN2 purge to the vacuum servicing unit could result in fire or personnel injuryRecommendation(s): Design a GN2 pressure sensing safety interlock switch that will inhibit use of the vacuum servicing unit when GN2 purge is not present.Evidence of Recurrence Control Effectiveness: N/AD
4、ocuments Related to Lesson: N/AMission Directorate(s): Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-a71 Space Operationsa71 Exploration SystemsAdditional Key Phrase(s): a71 Energetic Materials - Explosive/Propellant/Pyrotechnica71 Explosives Handl
5、inga71 Flight Equipmenta71 Ground Operationsa71 Ground Equipmenta71 Hardwarea71 Hazardous/Toxic Waste/Materialsa71 Launch Processa71 Launch VehicleAdditional 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-,-,-
