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Message ID: 75     Entry time: Tuesday, March 26, 2013, 10:55
Author: Isaac Earle 
Category: Maintenance 
Type: Target 1 
Specific: Target 
Subject: T1-MK1 Re-wiring and MRO Complete 

 The following work was performed on the T1-MK1 target:

- Unused proximity sensor removed
- Lift flange removed, painted, relabeled
- Seals changed for feedthrough #1, #2, plug port, and both water supply feedthroughs
- Seals (2) changed for feedthorugh #3 which required desoldering protect monitor connector and machining o-ring support tube
- Replaced nylon ferrules for water supply swagelok fittings
- Leak checked upper water supply tubes: all OK

- Target rewired by David Cameron (motor wires OK, micro switch wires were re-terminated, but not replaced)

- Installed lift flange
- Checked potentiometer, motor, micro switches, profile monitor limit switches: all OK
- Checked profile monitor actuation: smooth motion, travel starts at 10psi, fully actuated at 35psi
- Leak checked target ladder: results OK, see notes attached
- Noticed protect monitor wire conduit had dropped down from vacuum flange.  It is secure in current position and connector would have to be de-soldered to lift it, so decided to leave as-is.

- Target ladder moved to position zero
- Profile monitor raised to 'IN' position and secured for transport
- Target transported from the hot cell to the beam line

 

Note that after the target was installed in the beam line and vacuum was pumped down it required ~55psi to actuate the profile monitor.  Approximately 20psi more than when not under vacuum.

Attachment 1: T1-MK1_Tgt_leak_check.PDF  239 kB  | Show | Hide all
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