1、Lessons Learned Entry: 0246Lesson Info:a71 Lesson Number: 0246a71 Lesson Date: 1993-09-30a71 Submitting Organization: LERCa71 Submitted by: S. PapellSubject: Lifting Equipment Description of Driving Event: In the process of pulling a 30 foot long water pump weighing 3 tons out of a pit, two 3/4 inch
2、 eye bolts were screwed into the pump motor base and a cable sling attached to the eye bolts. The pump was pulled out of the pit setting one end on the ground. When starting to lay it down to a horizontal position, one of the eye bolts sheared off, dropping the pump to the ground.Lesson(s) Learned:
3、When cables are threaded through eye bolts to lift heavy loads, the eye bolts may have sufficient strength in tension but can fail in shear.Recommendation(s): Require rigging crews to follow ANSI standards B30.2 and B30.9 when lifting heavy loads and to use proper level lifting techniques to prevent
4、 undue stress on parts such as eye bolts.Evidence 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-,-,-N/AAdditional Key Phrase(s): a71 Lifting DevicesAdditional Info: Approval Info: a71 Approval Date: 1994-06-15a71 Approval Name: Maria Havenhilla71 Approval Organization: LERC/EBASa71 Approval Phone Number: 216-977-1483Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
