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NASA-LLIS-0078
Lessons Learned - Insulation Baking Process for RCS Thrusters
Year: 1992
Abstract: Description of Driving Event:
Three RCS primary thruster injector/chamber assemblies were damaged when the oven temperature control system malfunctioned and permitted the temperature to reach an estimated 1400 deg F during a cerachrome insulation baking process that should have been limited to 625 deg F. These units should have been rejected at this point, but quality assurance was not notified. As a result, the full extent of damage was not determined until the severe discoloration of titanium alloy and columbium parts was noted during the post-baking weighing process, about three weeks later.
Three RCS primary thruster injector/chamber assemblies were damaged when the oven temperature control system malfunctioned and permitted the temperature to reach an estimated 1400 deg F during a cerachrome insulation baking process that should have been limited to 625 deg F. These units should have been rejected at this point, but quality assurance was not notified. As a result, the full extent of damage was not determined until the severe discoloration of titanium alloy and columbium parts was noted during the post-baking weighing process, about three weeks later.
Subject: Ground Equipment
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:42:11Z | |
| date available | 2017-09-04T15:42:11Z | |
| date copyright | 05/20/1992 | |
| date issued | 1992 | |
| identifier other | PIYCQCAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/44529 | |
| description abstract | Description of Driving Event: Three RCS primary thruster injector/chamber assemblies were damaged when the oven temperature control system malfunctioned and permitted the temperature to reach an estimated 1400 deg F during a cerachrome insulation baking process that should have been limited to 625 deg F. These units should have been rejected at this point, but quality assurance was not notified. As a result, the full extent of damage was not determined until the severe discoloration of titanium alloy and columbium parts was noted during the post-baking weighing process, about three weeks later. | |
| language | English | |
| title | NASA-LLIS-0078 | num |
| title | Lessons Learned - Insulation Baking Process for RCS Thrusters | en |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1992 | |
| contenttype | fulltext | |
| subject keywords | Ground Equipment | |
| subject keywords | Ground Operations | |
| subject keywords | Hardware |