1、Lessons Learned Entry: 0942Lesson Info:a71 Lesson Number: 0942a71 Lesson Date: 2001-05-03a71 Submitting Organization: JSCa71 Submitted by: John WintersSubject: Improper Use of Hand Tools Description of Driving Event: An individual was using a 10 inch long by 3/16th inch T-handled Allen wrench to ext
2、ract screws. While attempting to remove the screws the Allen wrench broke in half resulting in the individuals hand to come down on the broken sharp end of the Allen wrench shaft puncturing his hand.Lesson(s) Learned: Sufficient downward pressure on the wrench and high torgue could cause flexing or
3、bending of the shaft, which in combination with the applied torque could cause the forged shaft to break suddenly and without warning.Recommendation(s): 1. Take a minute or two, to think about the job you are preparing to do; analyze the risk and danger.2. Wear proper Personal Protective Equipment (
4、PPE), i.e. eye protection, gloves, etc.3. Select the right tool for the job. Use the tool as it was designed to be used. Do not modify the tool or use “cheaters“ to provide leverage or forces the tool was not designed for.4. Remember, everything can and probably will break at sometime, especially if
5、 misused.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): a71 Exploration Systemsa71 Sciencea71 Space Operationsa71 Aeronautics ResearchAdditional
6、 Key Phrase(s): a71 Facilitiesa71 Flight Operationsa71 Flight Equipmenta71 Ground Operationsa71 Ground Equipmenta71 Industrial Operationsa71 Packaging Handling Storagea71 Personal Protective Equipmenta71 Safety & Mission AssuranceAdditional Info: Approval Info: a71 Approval Date: 2001-07-10a71 Approval Name: Eric Raynora71 Approval Organization: QSa71 Approval Phone Number: 202-358-4738Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
