REG NASA-LLIS-0069-1992 Lessons Learned - Explosion Proof AC Connectors.pdf
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REG NASA-LLIS-0069-1992 Lessons Learned - Explosion Proof AC Connectors.pdf
1、Lessons Learned Entry: 0069Lesson Info:a71 Lesson Number: 0069a71 Lesson Date: 1992-03-26a71 Submitting Organization: KSCa71 Submitted by: David PenningtonSubject: Explosion Proof AC Connectors Description of Driving Event: Employees were checking for correct phase rotation on cross-hinds AC recepta
2、cle. One employee attempted to manually twist a receptacle with a screwdriver. During this action the receptacle faulted either phase to phase or phase to ground. This electrical fault caused an arc flash burn to both employees eyes.Lesson(s) Learned: An explosion proof connector inadvertently fault
3、ed, causing an arc flashburn to the technicians eyes.Recommendation(s): Develop a test plan to study these connectors to determine the useful life expectancy (MTBF); then replace them before a more severe mishap occurs.Evidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: N/A
4、Mission Directorate(s): Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-N/AAdditional Key Phrase(s): a71 Hardwarea71 Parts Materials & ProcessesAdditional 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-,-,-
