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Entry  Friday, January 19, 2018, 12:32, Marla Cervantes, UO2/C, 40282-2 , TARGET BOAT, In progress, Carbonizing UO2/C discs for 1stepUCx in graphite sample container_#6 
    Reply  Monday, January 22, 2018, 15:51, Marla Cervantes, UO2/C, 40282-2 , TARGET BOAT, Problems, Carbonizing UO2/C discs for 1stepUCx in graphite sample container_#6 
       Reply  Monday, January 22, 2018, 16:20, Marla Cervantes, UO2/C, 40282-2 , TARGET BOAT, Problems resolved, Carbonizing UO2/C discs for 1stepUCx in graphite sample container_#6 180122-1e-1.jpg
          Reply  Tuesday, January 23, 2018, 12:49, Marla Cervantes, UO2/C, 40282-2 , TARGET BOAT, Done, Carbonizing UO2/C discs for 1stepUCx in graphite sample container_#6 Carbonization-Batch6-220118.docx
Message ID: 182     Entry time: Monday, January 22, 2018, 16:20     In reply to: 181     Reply to this: 183
Author: Marla Cervantes 
Target Material: UO2/C 
Target Oven W.O#: 40282-2  
Source: TARGET BOAT 
Status: Problems resolved 
Subject: Carbonizing UO2/C discs for 1stepUCx in graphite sample container_#6 

Marla Cervantes wrote:

Marla Cervantes wrote:

 Friday, January 19, 2018, 12:29

Circles from cast 1 were used, the same as the last round of 1stepUCx [see elog i.d. 164]

A 14mm punch was used to punch out circles from the cast.

35 circles were packed into a graphite sample container.

35 x UO2/C circles = 5.69 g

Graphite container = 6.84 g

Graphite container is placed inside a target boat.

Boat previously coated with TaC and sintered.

Ta-target boat is wrapped with 3-layers of heat shield and installed in Evap1.

Chamber currently pumping down.


 

 Monday, January 22, 2018, 9:00

A power outage on Sunday tripped off EVAP1.

 Monday, January 22, 2018, 10:00

Chamber pumping down.

Water flow turned on.


Monday, January 22, 2018, 13:30

IGP1 = 8e-6 Torr

Tapped up entire process manually to 520A in 45 min

TGHT = 520 A, 6.08 V 

Vacuum coming down indicating carbonization process complete

Will remain at max setpoint overnight.


 

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