REG NASA-LLIS-0030-1992 Lessons Learned - Gaseous Nitrogen (GN2) Tank Lifting Operations.pdf
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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
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