 Fri Dec 19 13:07:25 2003, Willy Andersson, Maintenance, To-Do list for M9SOL 
|
I had distributed this list by email earlier this month. I have added
a few items at the bottom. I am posting it on the M9SOL Elog under
Maintenance. Some of the items may not be achievable or practical but
|
|
Wed Apr 21 09:57:59 2004, Willy Andersson, Start Up, System status
|
Buffer tank pressure is down to about 6 psig. Too low to keep up
with liquefaction requirements to build LHe level. Doug Preddy
requested that I help Curtis Ballard top up system with new
|
|
Sun Apr 25 21:41:00 2004, Willy Andersson, Quench Recovery, Trip on PL Temp.
|
Got pager call at 16:20 this afternoon. Solenoid had tripped on PL
temperature. Arrived at about 17:00. Did a print screen of the striptool
graph and solenoid screen. See files Prtscrn1_april25_2004.doc and
|
|
Wed May 5 23:57:38 2004, Willy Andersson, Quench Recovery, Powerleads warming up again.
|
Got a page from Don Flemming at about 18:50 wondering why the power
lead temperatures were rising. See attachment may5_04_1800.BMP It looked as
though the monitoring signals flat lined for about 2 hours for some reason.
|
|
Thu May 6 09:32:13 2004, Willy Andersson, Quench Recovery, Additional notes from last night power lead problems.
|
When performing last nights refrigerator adjustments I also increased the
compressor discharge pressure to 11.25 barA. Also the backup air compressor
was tripped off again and I reset it. Finally I opened the city water flow
|
|
Fri Jun 25 12:36:04 2004, Willy Andersson, Quench Recovery, Compressor unloaded etc.
|
At about 09:30 this morning I noticed the sound coming from the compressor
building seemed louder than usual. After entering the building I noted that
the compressor was unloaded to about 50% and the compressor suction was
|
|
Fri Jun 25 14:20:58 2004, Willy Andersson, Quench Recovery, Switch to series mode
|
At about 14:00 solenoid temps dipping below 8 K. Trace of LHe level (dense
gas) starting to show. Switching to series cooling mode. |
|
Tue Jun 29 14:59:46 2004, Willy Andersson, Normal Running, Removed jumper on vacuum controller.
|
Tuesday 14:55
Removed jumper on back of PIC 901. This jumper should be off during
|
|
Sat Aug 7 22:37:04 2004, Willy Andersson, Quench Recovery, Compressor tripped off.
|
Got a call at about 10:00 this morning, the whole system had tripped off.
No power bumps or other disturbances. When I arrived the only fault
indications were "ColdBox Trip" light on the compressor panel and on the
|
|
Sat Aug 7 23:40:47 2004, Willy Andersson, Quench Recovery, Energizing solenoid
|
23:39 Powerleads cold, LHe level over 40% and rising. Energizing solenoid
to 500 Amps, ramp rate 60. Checking compressor building then going home. |
|
Thu Sep 2 21:58:34 2004, Willy Andersson, Quench Recovery, Switch to series cooling
|
Solenoid had tripped on powerlead overtemp at about 09:00 this morning.
Doug recovered the system to // cooling. I switched system to series
cooling at about 21:30. LHe level at about 10%. Buffer tank pressure is low
|
|
Sun Nov 28 10:15:18 2004, Willy Andersson, Quench Recovery, Powerlead quench ?
|
Got page very early this morning. Couldn't come in til 08:30. System was
in idle running mode and someone had reset the QRL panel so my guess is
that the solenoid tripped on powerlead overtemp. HIC142 was not fully open
|
|
Thu Jun 9 21:41:25 2005, Willy Andersson, Quench Recovery, Trying to achieve stable cooling.
|
From about 08:00 to 15:00
See Doug's previous entry for quench recovery details.
|
|
Tue Jul 19 16:13:32 2005, Willy Andersson, Quench Recovery, switch to series mode
|
CR_6KS_M down to 11 K.
Switched to series mode.
Started small flow to power leads to get them cold.
|
|
Tue Jul 19 18:09:56 2005, Willy Andersson, Quench Recovery, Quench II
|
Machine trip just as I was exiting the TRIUMF gate. QRL said cold box fault
as did red lite on compressor. At cold box panel all turbine red lites were
on and compressed air failure lite was on. But there was no problems with
|
|
Sun Aug 14 10:03:13 2005, Willy Andersson, Normal Running, System stable
|
No experiment running in M9B.
Solenoid current is zero and power supply not armed.
|
|
Mon Oct 31 07:48:57 2005, Willy Andersson, Quench Recovery, what a fine entry
|
| Keep IT safe boys |
|
Wed Nov 2 10:17:27 2005, Willy Andersson, Start Up, M9B helium refrigerator and solenoid cooldown
|
Started M9B MYCOM helium compressor circulating helium through system last
Friday. Right hand purifier was regenerated previously, LN2 fill system
started and flow started from buffer through purifier to low pressure
|
|
Tue Jun 13 15:52:46 2006, Willy Andersson, Quench Recovery, Doug has reduced and now closed CV155.
|
Now in full // cold return mode.
Had just talked with Curtis, He said thta he has already informed the
experimentors that the solenoid will not be ready until tommorow, so he
|
|
Tue Jun 13 16:04:33 2006, Willy Andersson, Quench Recovery, TIC 121 set to auto mode
|
| |