1、Lessons Learned Entry: 0030Lesson Info:a71 Lesson Number: 0030a71 Lesson Date: 1992-09-11a71 Submitting Organization: KSCa71 Submitted by: Lisa L.MusgraveSubject: Gaseous Nitrogen (GN2) Tank Lifting Operations Description of Driving Event: During installation of the orbiter GN2 tanks, the H70-0649 l
2、ifting adapter is used to raise the GN2 tank from the orbiter processing facility floor to the orbiter payload bay. The adapter is designed for the tank to sit flush in the cradle, but its configuration allows only the GN2 tank boss threads to sit on the adapter cradle. As a result, the tank boss su
3、pports the total tank load. This “improper fit“ condition contributes to the inability to properly secure the GN2 tank during lifting operations, possibly resulting in damage to the tank, the orbiter payload bay, and/or personnel injury.Lesson(s) Learned: 1. The lifting adapter prohibits tank from s
4、itting flush in cradle due to a 1.8“ tank boss extension, allowing boss threads to support total load.2. The strap securing the GN2 tank to the lifting adapter provides an inadequate securing capability during lifting operations.Recommendation(s): 1. Redesign/modify lifting adapter and cradle to rel
5、ieve boss from supporting the total GN2 tank load during lifting operations.2. Design a more adjustable strap that will more effectively tighten around the tank for a more secure fit.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Evidence of Recurre
6、nce Control Effectiveness: N/ADocuments Related to Lesson: N/AMission Directorate(s): a71 Space Operationsa71 Exploration SystemsAdditional Key Phrase(s): a71 Flight Equipmenta71 Ground Operationsa71 Ground Equipmenta71 Hardwarea71 Industrial Operationsa71 Launch Vehiclea71 Lifting Devicesa71 Pressure VesselsAdditional Info: Approval Info: a71 Approval Date: 1994-06-01a71 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-,-,-
