REG NASA-LLIS-0236-1993 Lessons Learned - Hydraulic Lift Gates.pdf

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1、Lessons Learned Entry: 0236Lesson Info:a71 Lesson Number: 0236a71 Lesson Date: 1993-07-06a71 Submitting Organization: LERCa71 Submitted by: S. PapellSubject: Hydraulic Lift Gates Description of Driving Event: An employee was loading a wheeled welding cart onto a truck equipped with a hydraulic lift

2、gate when the welding unit fell from the lift gate.The employee, working alone, pulled the welder onto the lift gate from the vehicles right side. He then turned the front wheel 90 degrees to help stabilize the welder and chocked the rear wheels with the aluminum ramp. Using the lift gate control on

3、 the right side of the vehicle, he raised the gate to the truck bed level. After reaching the truck bed elevation, the welding cart began to shift or slip towards the right side of the vehicle. The high center of gravity of the welder, the inadequacy of the aluminum ramp as a wheel chock, and the ad

4、verse slope of the lift gate, all contributed to the instability of the welding cart that resulted in the welder falling from the gate.Lesson(s) Learned: 1. Improper loading and unloading of heavy wheeled equipment with hydraulic lift gates can result in severe accidents and fatalities.2. Unsecured

5、loading of heavy, marginally stable equipment by means of a hydraulic lift gate can result in severe accidents.Recommendation(s): 1. Revise safety operating procedures to require handling of heavy wheeled equipment on hydraulic lift gates to be a two-person operation.2. Secure all heavy, wheeled equ

6、ipment with wheel chocks and tie down ropes before moving lift gate.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Evidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: N/AMission Directorate(s): N/AAdditional Key Phrase(s):

7、a71 Lifting Devicesa71 TransportationAdditional Info: Approval Info: a71 Approval Date: 1994-04-19a71 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-,-,-