MC2736 Lot 9 daily lot sample failures
Two Daily Lot Sample (DLS) failures occurred in Lot 9 of the MC2736 battery. The first DLS failed to reach the required voltage. X-rays were carefully reviewed for evidence of any condition which would impact battery performance. It was concluded that Serial No. 4422 failed because of oversized header potting. When the normal stack force used for closure welding was applied, it forced the header potting into the insulation sleeve. As a result, no pressure was applied to the cell stack. Because this condition could be detected on the standard battery x-rays, all x-rays for this lot were reviewed. No other batteries were found which showed any evidence of this problem. The second DLS failure produced no voltage when tested. Upon examination, the primer was found not to have ignited. Extensive investigation failed to determine the cause of the primer failure. The lot was accepted based on performance data from this and previous lots. This primer failure was shown to have no impact on the overall system reliability.
- Research Organization:
- General Electric Co., Largo, FL (United States). Neutron Devices Dept.
- DOE Contract Number:
- AC04-76DP00656
- OSTI ID:
- 721067
- Report Number(s):
- GEPP-TM--1093; ON: TI91020467
- Country of Publication:
- United States
- Language:
- English
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