1、Lessons Learned Entry: 0099Lesson Info:a71 Lesson Number: 0099a71 Lesson Date: 1992-08-06a71 Submitting Organization: KSCa71 Submitted by: David PenningtonSubject: APU Fuel Isolation Valve Assembly Description of Driving Event: An APU hydrazine isolation valve assembly was removed and sent to the sh
2、ipping section of logistics without being properly packaged for safe handling. In addition, there was no Q.A. check sheet and no decontamination tags with safety buy-off as being sniffed at zero parts per million. There was a conditional decontamination tag with the part indicating that it was from
3、a fuel system, and conditionally decontaminated but absorbed or trapped fuel could out-gas. The OPF was called for safety and technical support to come and check out the valve; the valve tested positive for hydrazine and was immediately safed.Lesson(s) Learned: Failure to properly package an APU iso
4、lation fuel valve when it was removed from the APU fuel system resulted in a close call.Recommendation(s): Revise/update standard practice instructions (SPI) to include bagging and tagging of components exposed to hypergols prior to transporting them.Evidence of Recurrence Control Effectiveness: N/A
5、Documents Related to Lesson: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-N/AMission Directorate(s): a71 Space Operationsa71 Exploration SystemsAdditional Key Phrase(s): a71 Energetic Materials - Explosive/Propellant/Pyrotechnica71 Hardwarea71 Haz
6、ardous/Toxic Waste/Materialsa71 Packaging Handling Storagea71 Packaging Handling StorageAdditional Info: Approval Info: a71 Approval Date: 1994-06-02a71 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-,-,-
