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Ack receipt of 900212 & 0405 ltrs informing NRC of incidents which occurred on 900208 re failure of timer to initiate when student technologist pushed "treat" button & on 900330 re malfunctioning of motorized collimator jaws.

Accession Number: ML20042F200

Date Released: Friday, October 25, 2024

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• ML20042F199 - Ack receipt of 900212 & 0405 ltrs informing NRC of incidents which occurred on 900208 re failure of timer to initiate when student technologist pushed "treat" button & on 900330 re malfunctioning of motorized collimator jaws. (2 page(s), 4/23/1990)
• ML20042F201 - Informs of 900330 malfunction of motorized collimator jaws, per 900124 confirmatory action ltr.Caused by malfunction on one circuit board.After replacement of circuit board,jaws functioned normally. (2 page(s), 4/5/1990)
• ML20042F203 - Informs of 900208 failure of timer to initiate when student technologist pushed "treat" button,per 900124 confirmatory action ltr.Timer accuracy,linearity & shutter error tests conducted & found to be entirely normal. (4 page(s), 2/12/1990)