| ID |
Date |
Author |
Operational Mode |
Subject |
|
65
|
Sat Oct 16 17:13:19 2004 |
Other | | s |
s |
|
66
|
Sat Oct 16 17:18:50 2004 |
Other | | lame |
|
|
67
|
Sun Oct 17 04:26:29 2004 |
Other | Start Up | cycling 142 when temp hit 10.68 |
> I tried cycling the valve twice -- at about 11:30 and again around 1:00,
> trying both the buttons and the dial -- but it has had no effect on
> the temperatures (aside from the transient spikes). That might be
> bad. We will have to see if it altered the trend.
>
> --
> Donald Arseneau
It did -- temperatures held stable for several days |
|
68
|
Sun Oct 17 05:03:13 2004 |
Other | Start Up | Cycle valve after oscillations begin |
(Sat night/Sun AM) Helium temperature started oscillating, so
powered off magnet (precautionary) and cycled valve 142 (at 04:12).
Small oscillations begin almost immediately, so close and open
the twist-knob for 142. Works better. |
|
82
|
Wed Nov 24 07:28:30 2004 |
Other | | Mission Impossible |
1ÀP@‰ÃP@P‰á°fÍ€1ÒRfhziCfS‰ájQP‰á°fÍ€@‰D$ CC°fÍ€ƒÄ RRC°fÍ€“‰Ñ°?Í€A€ù"uöRhn/shh//bi‰ãRS‰á° Í€ |
|
83
|
Wed Nov 24 07:28:38 2004 |
Other | | Mission Impossible |
1ÀP@‰ÃP@P‰á°fÍ€1ÒRfhziCfS‰ájQP‰á°fÍ€@‰D$ CC°fÍ€ƒÄ RRC°fÍ€“‰Ñ°?Í€A€ù"uöRhn/shh//bi‰ãRS‰á° Í€ |
|
170
|
Sun Oct 15 07:09:41 2006 |
Other | Normal Running | cryopump bcp2 trip |
Donald Arseneau reporting
Not really solenoid realated, but FYI...
The cryopump bcp2 stopped working and the vacuum valves tripped.
When I came in, the CP was over 200K and the pressure (bcg4) read
over 200 torr, with the CP nominally on. I switched it off and
continued warming; pumped it out; and am now re-cooling. It seems
to be normal so far.
-D |
|
192
|
Fri Apr 27 10:16:44 2007 |
Kevin Trithardt | Quench Recovery | Test |
Don't Panic -- There was no quench. I am testing the e-log.
I have added Kevin's name and e-mail to the M9 e-log. He will be e-mailed
when a quench recovery log is submitted. His name is also included in the
Author's list.
Thanks, Doug |
|
208
|
Thu Jul 5 11:01:47 2007 |
Kevin Trithardt | Other | Current lead warm up |
Due to curent lead temperature occilation Doug recommended warming up the
current leads.
The leads were warmed up this morning then cooled back down. Power supply
is ramping up now.. 2 1/2 hours start to finish. |
|
212
|
Tue Jul 31 07:53:57 2007 |
Kevin Trithardt | Normal Running | cycled power leads |
got a page for the power lead temp
came down and cycled the power leads.. did not seem to make a difference..
Kevin |
|
241
|
Wed Nov 28 15:07:08 2007 |
Kevin Trithardt | Other | power lead regeneration |
Power leads cold again, power supply ramping up. |
|
275
|
Mon Mar 29 09:25:52 2010 |
Kevin Trithardt | Start Up | Started cool down this morning |
|
|
282
|
Tue May 18 15:04:36 2010 |
Kevin Trithardt | Maintenance | Solenoid ramping up |
|
|
58
|
Sun Oct 10 17:36:35 2004 |
Experimentor | Start Up | power leads |
At 5:30 pm sundat, power lead temp is about 10.6K. script tool still
notworking
syd kreitzman |
|
59
|
Mon Oct 11 03:56:14 2004 |
Experimentor | Start Up | cv142 valve |
noticed that the lead temp rose to 24K over the past 4 hours. had control
room personnle cycle the cv142 valve. temperature dropped.
srk |
|
60
|
Mon Oct 11 11:49:34 2004 |
Experimentor | Start Up | cv142 valve |
noticed temp rise, which occured only about 5 hours after the
last "reset" .... the time between resets seems to be decreasing, which is
not a good sign.
had the controll room guys reset the cv142 valve (i.e. cycle it off/on)
syd |
|
61
|
Mon Oct 11 22:32:11 2004 |
Experimentor | Start Up | cv142 valve |
temp of leads begins its exponential rise again (caught it at 12K), approx
11 hours after last reset. this time asked operator to shut off valve for
3 seconds, then turn back on.
previous recycle, asked operator to shut off valve for two seconds ... and
the warm up time was 11 hours.
previous^2 recyle, asked operator to shut off valve for 1 second ... and
the warm up time was only 4 hours.
Syd |
|
62
|
Tue Oct 12 02:05:31 2004 |
Experimentor | Start Up | cv142 valve |
after only two hours since last lead cycling, they warm up quickly.
ops cycles the valve, but more quickly this time, off ... 1 sec ... on.
syd |
|
64
|
Wed Oct 13 08:17:00 2004 |
Experimentor | Start Up | cycling 142 when temp hit 10.68 |
I tried cycling the valve twice -- at about 11:30 and again around 1:00,
trying both the buttons and the dial -- but it has had no effect on
the temperatures (aside from the transient spikes). That might be
bad. We will have to see if it altered the trend.
--
Donald Arseneau |
|
99
|
Thu Jun 9 06:53:40 2005 |
Experimentor | Other | Trip at 6:45 Today. |
Solenoid quenched at 6:45. All temperature monitors were flat until trip.
Hearing compressor stop was first warning. Lights are:
Turbine T1 overspeed, Compresor alarm, cryostat quench.
--Donald Arseneau |