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 Thursday, June 02, 2016, 11:59, David Wang, South Hot-Cell, Repair, TM3, , 5K mega test on TM3 
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 Thursday, June 02, 2016, 18:04, Aurelia Laxdal, South Hot-Cell, Repair, TM3, , 5K mega test on TM3
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Friday, June 03, 2016, 16:04, Aurelia Laxdal, South Hot-Cell, Repair, TM3, , 5K mega test on TM3
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Message ID: 1252
Entry time: Friday, June 03, 2016, 16:04
In reply to: 1250
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| Author: |
Aurelia Laxdal |
| Category: |
South Hot-Cell |
| Type: |
Repair |
| Module: |
TM3 |
| Target/Number: |
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| Subject: |
5K mega test on TM3 |
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| Aurelia Laxdal wrote: |
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| David Wang wrote: |
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I did a 5KV mega test on TM3. Only5Mohm @5kV between coli line PQ and chassis(ground). It confirmed the close gap between P,Q and GE. Other lines are ok. See attachment.
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See attachment for sparking signs of the water lines mentioned above (Coil and Ground Electrode lines) in TM3 Source Tray.
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PLEASE NOTE: the resistance values for A and B on David's attachment are not correct since these measurements were done after Chad removed the target and the heat-shield bracket was moved, so consequently the water lines were not at their nominal locations. Once they were back in plac,e David took another measurement and the resistance values for A and B showed also 3,000 MOhm (as it was for most of the lines). The only lines that still showed a low resistance were the Coil lines. |