<!-- Title: 00:19:09  Fri May  4 2001 -->
<!-- Crewchief: WARREN -->
<!-- Op1: DEAN -->
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<!-- Op3: &nbsp; -->
<!-- Op4: &nbsp; -->
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<!-- Notes: -->
E-LOG 5-04-01


<!-- Date: Fri May 4 00:27:49 2001 -->
started pumping down watt can is at .007 torr
<!-- Author: Dean -->


<!-- Date: Fri May 4 03:34:59 2001 -->
The LABS pressure was down to 9 psig and falling quickly due to a cold night, so we opened up the trailer and then closed it off again.  It's back up to 32 psig.
<!-- Author: WBSB -->


<!-- Date: Fri May 4 05:39:00 2001 -->
We've had a couple of ISL flow warnings on the interlock page, but there were never alarms on the Process Systems Alarms page.
<!-- Author: WBDB -->


<!-- Date: Fri May 4 06:18:22 2001 -->
<pre>Preparing for power outage -- site wide 
 
    BABS valved in so that we have some place for gas to go. 
 
    Turned off cooling to silicon detectors.   Still flowing in  
    bypass mode.   Want to see what happens when power outage 
    occurrs 
 
    Racks on 1st and second floor being turned off 
 
    Preparing to replace bad nitrogen "T" on main nitrogen line 
    into building 
 
    Will verify adsorber is valved out of the system 
 
 
 
 
 
</pre>
<!-- Author: RR, SG, KC -->
<!-- Comment: Fri May  4 06;36;52 comment by...Steve -->
Adsorber is valved out.



<!-- Date: Fri May 4 06:41:23 2001 -->
<pre>Trying to take things down gracefully: compressor loading, engines, vacuum pumps, etc. but I have no control now from Fix:  
 
error 76(4c) Path not found.</pre>
<!-- Author: Steve Gordon -->


<!-- Date: Fri May 4 06:44:51 2001 -->
<table border=0><td><tr><td bgcolor=#e0e030><pre>There is no control suction is negative.</pre></td></tr></td></table>
<!-- Author: Steve -->


<!-- Date: Fri May 4 09:08:04 2001 -->
<pre>Outage summary: 
 
N2 for pneumatic valves was prematurely removed (for a valve change) so default positions occured. 
Need to switch to C drive to have control. 
Suction was 20" vacuum inhouse for a long time, fixed by taking gas to suction through the block and bleeds. 
Could not turn off or start compressor from iFix, started it locally. 
Both LCW pumps came on after power was restored. 
The adsorber is valved in, current readings are 5 ppm. 
Lost the reading for the liquid level of the nitrogen pot ( it was full tho) 
FIMF reading was lost and is still a little flakey. 
PVLF did not open with a power loss. 
 
Recovery of liquid helium level underway.</pre>
<!-- Author: Steve Gordon -->


<!-- Date: Fri May 4 11:23:04 2001 -->
<pre>IT WAS MY FAULT!!!! 
 
Rob was trying to debug the svx racks not being powered.   Problem was in quadlog.  During the debug process, i made the crucial mistake of forcing a variable....  DOH!  That tripped our flammable gas alarms and gave the firemen a nice ride.... 
 
Finally fixed the problem with racks and reset everything!</pre>
<!-- Author: RR -->


<!-- Date: Fri May 4 11:34:38 2001 -->
After today's power outage, the SVX chiller can not be run in the "remote" mode, but in "local" mode only.  There are problems with the chiller interlocks that will need to be addressed.  SVX cooling can continue to be used in this mode.
<!-- Author: Jim Ellermeier -->


<!-- Date: Fri May 4 12:47:27 2001 -->
<pre>The Argon Ethane flow to the CMEX miniskirt test in the Assembly Hall Pit was started this morning at about 10:00.  This flow will continue into next week.  The source of the gas is at the CES A/E port on the 730' platform.  A green tag is attached to indicate that they have safety approval to run their test.</pre>
<!-- Author: Del Allspach -->


<!-- Date: Fri May 4 13:04:46 2001 -->
PVLOSUC appeared to not be operating. After many trips across the berm, it turned out to be the actuator. We also changed out the I/P, but it wasn't necessary. Could only get 9/32" span. Liquid level (helium) is now recovering. Jerry has the actuator. 
<!-- Author: Steve -->


<!-- Date: Fri May 4 15:28:58 2001 -->
The autopsy on the PVLOSUC actautor revealed a small amount of rust colored dirt gumming up the inside of the positioner.  We checked the blwdown on the air tank in the compressor house, and air filters; they all appeared clean.
<!-- Author: Sanders -->


<!-- Date: Fri May 4 15:38:32 2001 -->
Jerry has repaired the old PVLOSUC actuator; it's on the shelf at PAB if we need it for a spare.
<!-- Author: Steve -->


<!-- Date: Fri May 4 15:39:24 2001 -->
Valved in the east tube trailer. The west is valved off with 111psig left in it.
<!-- Author: Steve -->


<!-- Date: Fri May 4 15:43:14 2001 -->
<pre>Having trouble with humidity trips for silicon system.   Went into formation and changed the relative humidity from 50% to 40% to drive humidity down in the collision hall.   AC units seem to be doing th eright thing -- we loaded up the AC units and the heaters cranked up.</pre>
<!-- Author: RR -->


<!-- Date: Fri May 4 16:23:40 2001 -->
Found and deleted APACS code that was automatically changing dewar set point.  Perhaps now the mysterious set point changes on dewar level set point will stop.
<!-- Author: Sanders -->


<!-- Date: Fri May 4 16:27:52 2001 -->
The collision hall AC has been set from hi to low. Need to check the temp differential across the hall.
<!-- Author: Steve -->


<!-- Date: Fri May 4 16:36:41 2001 -->
While pre-maturely trying to change a cracked threads on a N2 1/2" nepro valve just in front of the gas shed that feeds gas to the mixing shed. The 1/4" brass pipe broke this morning about 6:45. Bill Noe, Rob Roser and I drilled and re-tapped the 1/4" threads and installed a new valve.  Del Alspach and I changed to another channel on the apacs to correct a fault on the ct1 (R4-S8-ch6).  Steve and I also got training from Bill on CDF water sys.  Took readings and all is well.
<!-- Author: KC -->


<!-- Date: Fri May 4 20:42:10 2001 -->
SOMEONE CLOSED DOWN THE IFIX BACKGROUND SERVER ON S3! ??? HAD TO RESTART IFIX. ---- ALL BETTER NOW.
<!-- Author: JIMZ -->


<!-- Date: Fri May 4 23:13:41 2001 -->
SOMEBODY CAUSED ALL THE ANIMATIONS ON PAGE SVX CHILLER INTERLOCKS TO GO AWAY ( DELETED ).---- REINSTATED THEM I HOPE?
<!-- Author: JIMZ -->


<!-- Date: Fri May 4 23:48:47 2001 -->
READINGS TAKEN EVERYTHING OK WITH THE EXEPTION OF ISL TEMPS. & THE SILENCED ALARMS DUE TO ONGOING WORK.
<!-- Author: J.H. & J.L. -->