REG NASA-LLIS-0986-2001 Lessons Learned Tight scheduling and New Unfamiliar Equipment in Hazardous Environments.pdf

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1、Lessons Learned Entry: 0986Lesson Info:a71 Lesson Number: 0986a71 Lesson Date: 2001-08-01a71 Submitting Organization: JSCa71 Submitted by: John WintersSubject: Tight scheduling and New Unfamiliar Equipment in Hazardous Environments Description of Driving Event: High voltage linemen were on very tigh

2、t time constraints and were attempting to measure the voltage in a 15kV fuse cabinet. They were going to measure the voltage from phase to ground of approximately 7630 volts. The equipment they were using is engineered to contact high power lines or transformers out in the open for direct readings.

3、The linemen had contacted the phase conductor with one probe of the test meter and were attempting to make contact with a ground point in the fuse cabinet of the transformer when an electric flash occurred, indicating a ground fault. The ground fault went through and out of the back of the meter gro

4、und faulting to the cabinet enclosure. No one was injured but the fault caused an immediate interruption of power to the site electric feeder.Lesson(s) Learned: Using new equipment in hazardous environments without full understanding all the capabilities and restrictions can easily cause injury or e

5、quipment destruction. Add to this dangerous situation the “hurry up, lets get this job done“ attitude, is only adding fuel to an accident waiting to happen.Recommendation(s): Be sure training is thorough. All persons who will use the equipment (supervisors and technicians) need to understand the app

6、lication and restrictions of the new equipment. Do not let tight time constraints take precedence over any activity. Ensure all personnel understand their safety and other performance responsibilities and fully understand the new equipment and tasks.Evidence of Recurrence Control Effectiveness: N/AP

7、rovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Documents Related to Lesson: N/AMission Directorate(s): a71 Exploration Systemsa71 Sciencea71 Space Operationsa71 Aeronautics ResearchAdditional Key Phrase(s): a71 Configuration Managementa71 Energya71 F

8、acilitiesa71 Fire Protectiona71 Flight Operationsa71 Flight Equipmenta71 Ground Operationsa71 Ground Equipmenta71 Human Factorsa71 Human Resources & Educationa71 Industrial Operationsa71 Lifting Devicesa71 Packaging Handling Storagea71 Personal Protective Equipmenta71 Pressure Vesselsa71 Risk Manage

9、ment/Assessmenta71 Safety & Mission Assurancea71 Test Articlea71 Test Facilitya71 Test & Verificationa71 Training EquipmentAdditional Info: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Approval Info: a71 Approval Date: 2001-08-07a71 Approval Name: Ron Montaguea71 Approval Organization: JSCa71 Approval Phone Number: 281-483-8576Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-