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NASA-LLIS-0055
Lessons Learned - Quick Disconnect F.O.D.; Quick Disconnect (QD) Design; SCAPE Operations
Year: 1992
Abstract: Description of Driving Event:
During servicing of the oxidizer on the forward reaction control system (FRCS), a ground half quick disconnect (QD) failed. The failure mode was such that an open flow path was created to the outside of the QD and 15 to 20 gallons of oxidizer (N2O4) flowed overboard prior to isolating the flow sources. The failure of the ground-half QD was attributed to an accumulation of iron nitrate lodged between the probe and the dynamic head. The presence of iron nitrate was traced to contaminated fuel.
During servicing of the oxidizer on the forward reaction control system (FRCS), a ground half quick disconnect (QD) failed. The failure mode was such that an open flow path was created to the outside of the QD and 15 to 20 gallons of oxidizer (N2O4) flowed overboard prior to isolating the flow sources. The failure of the ground-half QD was attributed to an accumulation of iron nitrate lodged between the probe and the dynamic head. The presence of iron nitrate was traced to contaminated fuel.
Subject: Emergency Preparedness
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T17:06:46Z | |
| date available | 2017-09-04T17:06:46Z | |
| date copyright | 01/28/1992 | |
| date issued | 1992 | |
| identifier other | YFYCQCAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/130288 | |
| description abstract | Description of Driving Event: During servicing of the oxidizer on the forward reaction control system (FRCS), a ground half quick disconnect (QD) failed. The failure mode was such that an open flow path was created to the outside of the QD and 15 to 20 gallons of oxidizer (N2O4) flowed overboard prior to isolating the flow sources. The failure of the ground-half QD was attributed to an accumulation of iron nitrate lodged between the probe and the dynamic head. The presence of iron nitrate was traced to contaminated fuel. | |
| language | English | |
| title | NASA-LLIS-0055 | num |
| title | Lessons Learned - Quick Disconnect F.O.D.; Quick Disconnect (QD) Design; SCAPE Operations | en |
| type | standard | |
| page | 3 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1992 | |
| contenttype | fulltext | |
| subject keywords | Emergency Preparedness | |
| subject keywords | Energetic Materials - Explosive/Propellant/Pyrotechnic | |
| subject keywords | Fire Protection | |
| subject keywords | Flight Equipment | |
| subject keywords | Ground Equipment | |
| subject keywords | Ground Operations | |
| subject keywords | Hardware | |
| subject keywords | Hazardous/Toxic Waste/Materials | |
| subject keywords | Launch Process | |
| subject keywords | Launch Vehicle | |
| subject keywords | Packaging Handling Storage | |
| subject keywords | Parts Materials & Processes | |
| subject keywords | Personal Protective Equipment | |
| subject keywords | Spacecraft |