5 OCTOBER
08:21 Temperatures stable overnight. See attached. Baking continues.
Remember to visually inspect the tent for potential new drafts the next time in Daresbury.
Also remember to check on thermocouple 1-4 status / position.
10:15 Draft caused by section of top blanket collapsing slightly producing a hole at the top-back end of the volume. Only way to remove draft is to power down and shift
some of the larger blanket sections over to support the collapsed bit. Keith requires temperatures >120C for the vessel average to proceed so heat was powered down and
jacket reconstructed. See attached photos of the top of the baking volume (Sorry for quality).
Pressure on vessel when baking concluded: 2e-7mbar
13:00 Baking jacket all sorted, temperature set to 60C to equilibrate. New session had to be started as cooling then heating confuses the rates on the baking program. All
looks good at the moment, will continue to monitor and increase temperature when needed. Automatic mode may be able to be utilised again as rectifying the insulation on
the
back has reduced the thermal gradients somewhat.
Pressure on vessel when baking restarted: 1e-8 mbar
Bumax order has also been delivered
16:00 Monitoring remotely, bakeout has been on automatic for an hour and is currently at 67C. Vessel gradient ~7.5C
17:15 All looks okay, will leave for a few hours now. Temp is 73C, gradient ~8.2C
22:00 Automatic baking to 90C gradient >10C. Ramped to 105C for RE72-1 and 100C for RE72-2. Will leave overnight to stabilise
6 October
9:50 Temperatures stable, increasing to 115C, 105C
11:20 Temperatures stable, Increasing to 120C, 115C
13:15 Temperatures stable, increasing to 125C, 120C. Vessel average ~115C.
14:45 Temperatures stable (see attached). Increasing to 130C, 125C. Vessel average~120C
20:16 Temperatures stable, may be getting to edge of how hot we can get. Increasing to 135C, 130C overnight. Vessel average~128C should be sufficient.
7 October
07:30 Temperatures stable, have reached max temperature we can achieve 132C, 128C on RE-72 thermocouples. Vessel average~131C should be sufficient. Temperatures will be
maintained until Monday when negs can be activated.
20:30 Temperatures stable (see attached)
8 October
10:30 Temperatures stable
9 October
8:30 Temoeratures remain stable |