1、Lessons Learned Entry: 0101Lesson Info:a71 Lesson Number: 0101a71 Lesson Date: 1992-08-10a71 Submitting Organization: KSCa71 Submitted by: David PenningtonSubject: Proof Load Test Fixture Description of Driving Event: The proof load test operator installed a 3 leg sling H77-0235 in the tensile machi
2、ne to proof load test a “D“ and/or an “O“ ring to 72,000 lbs and 52,000 lbs. The tensile puller pump motor stopped and the operator shut down the machine immediately and discovered tensile puller over pulled the “D“ ring, deforming it, also distorting 3 pins in the tensile puller. The “D“ ring was d
3、istorted beyond a salvageable limit.Lesson(s) Learned: Lack of a safety cut-out switch on the proof load test fixture resulted in a “close call“ when a “D“ ring was distorted (over pulled).Recommendation(s): Modify system by adding a safety cut-out switch to prevent over loading any fixture.Evidence
4、 of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: N/AMission Directorate(s): Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-a71 Exploration Systemsa71 Sciencea71 Space Operationsa71 Aeronautics ResearchAdditional Key Phrase(s): a
5、71 Ground Operationsa71 Hardwarea71 Industrial Operationsa71 Lifting Devicesa71 Test FacilityAdditional 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-,-,-
