REG NASA-LLIS-0551-1997 Lessons Learned Electric Power Off Button Design.pdf

1、Lessons Learned Entry: 0551Lesson Info:a71 Lesson Number: 0551a71 Lesson Date: 1997-04-18a71 Submitting Organization: JSCa71 Submitted by: Susan SinclairSubject: Electric Power Off Button Design Description of Driving Event: An electric power off (EPO) button for computers was located in a room that

2、 required a button to be pushed to exit the room. An individual mistook the EPO button for an exit button and inadvertently cut off the power to the computers in the room. Had this happened during a flight or critical simulation a great deal of data and monitoring could have been lost.Lesson(s) Lear

3、ned: Human factors and site analysis are important considerations when designing or modifying facilities and equipment.Recommendation(s): Consider human factors when designing and installing power/equipment on/off switches/buttons. The EPO button was red and had a red sign above it - similar in appe

4、arance and coloring to exit buttons. The sign color has been changed to a color different than red to avoid confusion. An extra clip has been added to the button cover of the EPO buttons to make it more difficult to inadvertently push the button or to unconsciously lift the cover and push the button

5、 without being fully aware that it is an EPO button.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): N/AAdditional Info: Approval Info: a71 Approval Date: 1997-05-14a71 Approval Name: Ronald A. Montaguea71 Approval Organization: NA3a71 Approval Phone Number: 281-483-8576Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-