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NASA-LLIS-3762
Lessons Learned - Maintaining an Uninterruptible Power Supply (UPS)
Year: 2011
Abstract: Description of Driving Event:
Two Command and Data Simulator (CADS) checkout computers located in the CADS room are attached to dedicated UPSs. During Space Shuttle Main Engine (SSME) validation, the UPS for the second CADS computer (GSE for SSME testing) was not functioning. This second CADS computer was a backup and had not been used for 2 years. Review of technical specifications revealed that the UPS batteries require full recharge cycling every 6 months in order to keep the batteries from discharging beyond the safe limit. Procedures to perform this maintenance were not in place.
Two Command and Data Simulator (CADS) checkout computers located in the CADS room are attached to dedicated UPSs. During Space Shuttle Main Engine (SSME) validation, the UPS for the second CADS computer (GSE for SSME testing) was not functioning. This second CADS computer was a backup and had not been used for 2 years. Review of technical specifications revealed that the UPS batteries require full recharge cycling every 6 months in order to keep the batteries from discharging beyond the safe limit. Procedures to perform this maintenance were not in place.
Subject: Emergency Preparedness
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T16:44:49Z | |
| date available | 2017-09-04T16:44:49Z | |
| date copyright | 05/27/2011 | |
| date issued | 2011 | |
| identifier other | VXXKMEAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/108110 | |
| description abstract | Description of Driving Event: Two Command and Data Simulator (CADS) checkout computers located in the CADS room are attached to dedicated UPSs. During Space Shuttle Main Engine (SSME) validation, the UPS for the second CADS computer (GSE for SSME testing) was not functioning. This second CADS computer was a backup and had not been used for 2 years. Review of technical specifications revealed that the UPS batteries require full recharge cycling every 6 months in order to keep the batteries from discharging beyond the safe limit. Procedures to perform this maintenance were not in place. | |
| language | English | |
| title | NASA-LLIS-3762 | num |
| title | Lessons Learned - Maintaining an Uninterruptible Power Supply (UPS) | en |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;2011 | |
| contenttype | fulltext | |
| subject keywords | Emergency Preparedness | |
| subject keywords | Facilities | |
| subject keywords | Ground Operations | |
| subject keywords | Ground processing and manifesting | |
| subject keywords | Long-term sustainability and maintenance planning | |
| subject keywords | Maintenance |