<!-- Title: 13:23:41  Tue Oct  3 2000 -->
<!-- Crewchief: Cryo and Gas   -->
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Cooldown. Troubleshooting contamination source.


<!-- Date: Tue Oct 3 13:28:49 2000 -->
We had noticed the slope of N2 ppm rising the same as yesterday. We are once again pumping on the dead end volumn. Also, I purged out every instrument line on the instrument panel, i.e., flows, lead flows, pressure transducers and pressure switch.
<!-- Author: Steve -->


<!-- Date: Tue Oct 3 15:15:59 2000 -->
<pre>Turned LN2 off (14:54) to heat exchanger to observe arc cell reading rate of rise.  No significant change in slope.  Turned LN2 on at 15:17.  Heat exchanger pot pressure went down to 1.7 psig.</pre>
<!-- Author: Ken -->


<!-- Date: Tue Oct 3 19:41:57 2000 -->
Opened MV 2024 and 2064 so that both BABS and LABS are both tied into the low pressure tank.   Adsorber is valved in and we are circulating gas through the system, continuing the cooldown and trying to clean up the gas. 
 
Lots of tests performed this afternoon.   The most telling is that when we closed EV101 and pumped all the gas to the storage tanks thru the suction side, we really crapped up the gas.   Quantity of disturbance in the ppm seems to indicate a leak from the nitrogen side of the HX.   Nothing definite determined yet however. 
  
<!-- Author: Teams A, B, and C -->


<!-- Date: Tue Oct 3 22:16:45 2000 -->
<pre>CLOSE HELIUM TRAILER VALVE</pre>
<!-- Author: Dean  -->


<!-- Date: Tue Oct 3 22:55:04 2000 -->
<table><tr><td><a href=/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=-58&button=yes target='xxx' onclick='jswindow()'; align=top><img src=/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=-58  width='250' align='top'></td><td>Babs cleanup plot. Flow was increased a little.</a></td></tr></table>
<!-- Author: Steve -->


<!-- Date: Tue Oct 3 23:46:52 2000 -->
RBOBCNT_P is 206.9, still cooling, although the input temps are still turning around from the earlier stop for tests. Sampling out of BABS we have 21.8ppm, still falling. Cooldown program still operational.
<!-- Author: Steve -->


<!-- Date: Wed Oct 4 08:39:13 2000 -->
Arc cell reads -.15ppm (essentially zero) looking at LABS.  System looks clean.  We will set up valves out at the tanks, to draw gas pressure down in LABS and isolate BABS while it has clean gas in it.  This will minimize the gas inventory in the system while we continue cooldown and look for possible contamination problems.  If we do contaminate again it will be with the minimum system volume.
<!-- Author: RPS -->


<!-- Date: Wed Oct 4 08:51:24 2000 -->
<pre>Changed Storage Tank configuration.   Babs is valved out of  
the system.  Lowered pressure in LABS and then hooked labs to the tube trailer.   Set pressure is at 60 psi at tube trailer regulator.   Arc cell reading LABS.   </pre>
<!-- Author: RR+RK -->


<!-- Date: Wed Oct 4 08:53:13 2000 -->
Current status, PVQR is at 8.1% open, set point at 133.5k, rmagin at 194, rbobcntr 198k, pvx1 is at 3 1%, pvx2 is at 30%
<!-- Author: RR -->


<!-- Date: Wed Oct 4 10:00:15 2000 -->
I called BOC to get tank 18 filled and to setup a daily schedule. BOC (Andy MacDonald) said they will NOT deliver daily since our usage doesn't require it. I told him I did not want to operate on the middle of the tank so I requested a special delivery to fill 18. That should happen tomorrow.
<!-- Author: Noe -->


<!-- Date: Wed Oct 4 10:01:49 2000 -->
Node CDF-S1 stopped delivering data. Talked to Mark Knapp and we decided to reboot it. It is better now.
<!-- Author: Noe -->


<!-- Date: Wed Oct 4 11:01:26 2000 -->
<pre>fixed adsorber inlet arc cell line. It had a leak at a braze joint that we replaced with compression fittings and a short jumper.  Still had no flow. Found that this line and other arc cell lines were attached to N2 vent line and frozen... removed them and when they thawed flow resumed. Arc cell at adsorber inlet is now -.063 and at outlet -.058 ppm. 
 
 
</pre>
<!-- Author: RDK, RR, RLS -->


<!-- Date: Wed Oct 4 11:01:53 2000 -->
<pre>fixed adsorber inlet arc cell line. It had a leak at a braze joint that we replaced with compression fittings and a short jumper.  Still had no flow. Found that this line and other arc cell lines were attached to N2 vent line and frozen... removed them and when they thawed flow resumed. Arc cell at adsorber inlet is now -.063 and at outlet -.058 ppm. 
 
 
</pre>
<!-- Author: RDK, RR, RLS -->


<!-- Date: Wed Oct 4 11:03:15 2000 -->
fixed adsorber inlet arc cell line. It had a leak at a braze 
 joint that we replaced with compression fittings and a short jumper.  Still had no flow. Found that this line and other arc  
cell lines were attached to N2 vent line and frozen... removed them and when they thawed flow resumed. Arc cell at adsorber inlet is now -.063 and at outlet -.058 ppm. 
 
OK... HTML this time 
 
  
<!-- Author: RDK, RR, RLS -->


<!-- Date: Wed Oct 4 11:05:49 2000 -->
NOTE to Del Alspach. Several gas lines were encased in the ice ball we cleared. We should reroute them or they will freeze out the ethane or isobutane.
<!-- Author: RDK -->


<!-- Date: Wed Oct 4 12:11:48 2000 -->
Cycled pressure down to 50 psi by closing EV101-H. No big contamination evident. Found and fixed 2 leaks to arc cell, one on input side of adsorber and one on line from high pressure manifold.   High pressure manifold now reads -0.28.  Adsorber input reads -0.58. Adsorber output reads  -0.64.
<!-- Author: RDK -->


<!-- Date: Wed Oct 4 12:46:56 2000 -->
cycled pressure down to 10psi with EV101-H, refilled and saw no change in arc cell readings from HTX manifold... still reading -0.58. Switch to adsorber outlet and we will valve off adsorber over lunch.  
 
Found another small lead in braze joint on line to adsorber inlet.
<!-- Author: RDK and RR -->


<!-- Date: Wed Oct 4 12:49:52 2000 -->
Adsorber has been valved out. 
<!-- Author: Noe -->


<!-- Date: Wed Oct 4 12:51:06 2000 -->
The logic for auto switching the A/E storage tanks seems to work fine. Tank 1 is now on mixing to tank 2 and tank 3 is ready.
<!-- Author: Noe -->


<!-- Date: Wed Oct 4 13:52:11 2000 -->
Adsorber has been valved off for 1 hour; reading -0.36ppm.
<!-- Author: Steve -->


<!-- Date: Wed Oct 4 16:36:45 2000 -->
PPM level = 6.4 ppm adsorber off
<!-- Author: RPS -->


<!-- Date: Wed Oct 4 16:46:06 2000 -->
Rate of rise of contamination is approximately 2.4 ppm per hour.  This is approximately the same as we saw yesterday?  However the volume of gas inventory is a lot less today since BABS is off.
<!-- Author: RPS -->


<!-- Date: Wed Oct 4 17:02:26 2000 -->
ECW water loss problems. Looking at APACS page PULSE_CD_VALVES we find a problem with the way a >STUB> was used. The scan time and the 15 s timer interacted in such a way that sometimes the valve above the one with the correct COUNT number pulsed false briefly. This resulted in the valve on these racks, usually the COT, sticking open.  Fixed it in APACS by defining a local variable STUB2 and defining both it and COUNT at the right hand side of the sheet. This was used to get rid of >STUB>
<!-- Author: RDK,RR,RPS,RCS -->


<!-- Date: Wed Oct 4 17:33:17 2000 -->
<pre>COT is flowing a/e gas</pre>
<!-- Author: Dean -->


<!-- Date: Wed Oct 4 19:02:35 2000 -->
<pre>SHIFT READING TAKEN</pre>
<!-- Author: Dean -->


<!-- Date: Wed Oct 4 19:32:56 2000 -->
ARC Cell was on high side of compressor.   It was reading 9.5. 
Now we are valved into LABS.   In the last hour, we purged the arc cell area.   We found a trapped volume and we also purged the guages which had trapped air.   LABS was bouncing from 0-6ppm.  Valved off tube trailer at 7:31 in order to try to stop the oscillations.
<!-- Author: RR , RK and crew -->


<!-- Date: Wed Oct 4 20:11:41 2000 -->
LABS was reading 8.5 PPM.  Note that it takes 10 min for this line to purge out and that it cycles up and down because tube trailer feeds at that point. Reading smoothed out when we valved off tube trailer. Conclude that our leak is contaminating the entire volume. Compressor suction is at 11.25 ppm. adsorber is still valved out. RBOBCNT_P =183.2 K  PVQR =11.3 still cooling down.
<!-- Author: RDK -->


<!-- Date: Wed Oct 4 20:16:01 2000 -->
<pre>arc cell reading compressor suction since 8 PM</pre>
<!-- Author: RDK -->


<!-- Date: Wed Oct 4 20:20:24 2000 -->
<pre>8:25, raised suction pressure to 3 psi</pre>
<!-- Author: RR -->


<!-- Date: Wed Oct 4 21:05:18 2000 -->
At 20:20 the arc cell read 11.7 ppm It was reading HP in the building.
<!-- Author: RPS -->


<!-- Date: Wed Oct 4 21:19:37 2000 -->
At 21:20 the arc cell read 13.2 ppm.  This once again yields a contamination rate of rise of 1.4 ppm/hour or .024 ppm/min 
We will now try to isolate some parts of the system to see if we can make a difference.  Close all engine valves (Dry & Wet)
<!-- Author: RPS -->


<!-- Date: Wed Oct 4 21:46:59 2000 -->
<table><tr><td><a href=/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=-59&button=yes target='xxx' onclick='jswindow()'; align=top><img src=/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=-59  width='250' align='top'></td><td>RBOBCNT_P  at 1.5 K/hr.</a></td></tr></table>
<!-- Author: Steve -->


<!-- Date: Wed Oct 4 22:02:08 2000 -->
<pre>Valved out tube trailer, valved arc cell to LABS.   Engines are now closed.   Once we determine a rate, we will valve out the building and look at the leak rate in LABS to see if the 
leak is inside or outside.   Adsorber is still valved out.</pre>
<!-- Author: RR -->


<!-- Date: Wed Oct 4 23:25:27 2000 -->
<table><tr><td><a href=/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=-60&button=yes target='xxx' onclick='jswindow()'; align=top><img src=/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=-60  width='250' align='top'></td><td>arc cell test looking at compressor side.</a></td></tr></table>
<!-- Author: Steve -->


<!-- Date: Wed Oct 4 23:32:23 2000 -->
Late note: earlier, we increased the water flow to the turbo pump in the collision hall.
<!-- Author: Steve -->


<!-- Date: Wed Oct 4 23:54:54 2000 -->
Tests Complete for the evening.   Leak is definately inside the building.   Conditions we are leaving the system in.   ARC CELL valved in to LABS.   Current reading is 15.27.   Adsorber valved back in.   Tube trailer valved back in.  Suction pressure lowered to 1.5 psi.   Flow re-established to the building. 
PVQR manually set to 10%.   Reset cooldown loop.   Lead flows back on.
<!-- Author: RR  -->


<!-- Date: Thu Oct 5 06:52:10 2000 -->
Bobbin temp 168 K. Supply temp 90, PVQR =33%, still on ramp control. Looks good
<!-- Author: RDK -->


<!-- Date: Thu Oct 5 06:55:19 2000 -->
Arc cell on LABS read -0.56 PPM looks like system cleaned up over night.
<!-- Author: RDK -->


<!-- Date: Thu Oct 5 07:12:32 2000 -->
<table><tr><td><a href=/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=-62&button=yes target='xxx' onclick='jswindow()'; align=top><img src=/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=-62  width='250' align='top'></td><td>1.5 deg /hr</a></td></tr></table>
<!-- Author: RDK -->


<!-- Date: Thu Oct 5 07:39:59 2000 -->
valved out adsorber to reestablish rate of rise. Arc cell is connected to LABS. 
<!-- Author: RDK -->


<!-- Date: Thu Oct 5 08:33:12 2000 -->
<pre>At 8:30, the arc cell read -0.4 at LABS.   (perhaps because we 
are in some steady state)   We changed to read compressor discharge with the arc cell.   It is currently reading 0.30.</pre>
<!-- Author: RR -->


<!-- Date: Thu Oct 5 08:48:34 2000 -->
Estimate the leak rate into the system: 
 
Volumes: 
 
Compressor oil knockouts and filters + HP piping = 800 Gal =  108 Cu ft @ 290 psia ==> 2200 cu ft at STP 
 
 
LABS: 1000 Gal = 135 cu ft @ 75 psia = 675 cu ft @ STP 
 
He Dewar: 2000 l = 40 cu ft @40 psia = 120 cu ft @ STP 
 
Total Volume =2200+675+120=2995 cu ft of He gas in system 
 
Measured leak rate is 1.4 PPM/hr  
 
Absolute leak rate is 2995 cu ft x 1.4 e-06 SCFH =.0042 SCFH 
 
Question: If all this froze out in HTX or engines how much are we talking about ?   
 
Answer: .0042 SCFH / 25 SCF/liquid liter = .000168 liquid liter/hr = .17 cc /hr worst case. (actually some or all of this might be dropped out in the adsorber) ==> 5.1 cc of N2 ice in a month of running worst case. 
 
Conclude we can live with this leak for the commissioning run
<!-- Author: RDK, RR -->


<!-- Date: Thu Oct 5 09:39:56 2000 -->
<pre>arc cell on compressor discharge reads 1.66 ppm</pre>
<!-- Author: RDK -->


<!-- Date: Thu Oct 5 09:56:32 2000 -->
Closed PVXLN to initiate test.  ARC CELL is on compressor discharge. ARC CELL reading is 2.03 PPM
<!-- Author: R Sanders -->


<!-- Date: Thu Oct 5 10:41:24 2000 -->
Testing and purging the CLC isobutane circuit using bottled nitrogen.
<!-- Author: Noe -->


<!-- Date: Thu Oct 5 11:10:06 2000 -->
Started dry He purge of Heat exchanger.   We are purging through  
PVXLN -- we removed the valve and are goign through a cork. 
  
<!-- Author: RR -->
<!-- Comment: Thu Oct  5 11;12;06 comment by...RR -->
Mistyped, the valve is PVXLP

<!-- Comment: Thu Oct  5 11;14;00 comment by...RR -->
At 11:18, the arc cell on comp discharge is 3.80 ppm


<!-- Date: Thu Oct 5 11:38:39 2000 -->
Arc-cell is at 4.43 ppm.  Plot continues to trend upward with no 
sign of flat-line.
<!-- Author: KLS -->


<!-- Date: Thu Oct 5 12:28:51 2000 -->
Completed purging with 4th bottle.
<!-- Author: RR+KS -->


<!-- Date: Thu Oct 5 12:40:28 2000 -->
Note:  (Pretaining to the plot...there is a 6 min differance between these to clocks. Plot time is ahead.)  At 12:27 to 12:29 there was a 1 ppm drop in the historical data for the arc cell.   
during this time there was no changes being made to the system.  
Not sure what caused this.
<!-- Author: KLS -->


<!-- Date: Thu Oct 5 13:38:35 2000 -->
Auto dialer initiated.  Strain gauge in alarm for solinoid. After 30 minutes with no response, contacted via LDP Bob Sanders, and Rich Stanek.  
<!-- Author: KLS -->


<!-- Date: Thu Oct 5 13:50:16 2000 -->
<pre>We saw no change in slope, but when we removed the rubber stopper LN2 bubbled up... conclude it is backstreaming from the N2 vent (ie shield and/or intercept flows are producing liquid at their outlets. Shut off MV 1730 to kill LN2 flow to building and restablish He purge.</pre>
<!-- Author: RD -->


<!-- Date: Thu Oct 5 13:51:02 2000 -->
We saw no change in slope, but when we removed the rubber  
stopper LN2 bubbled up... conclude it is backstreaming from the 
 N2 vent (ie shield and/or intercept flows are producing liquid 
 at their outlets. Shut off MV 1730 to kill LN2 flow to building  
and restablish He purge.
<!-- Author: RD -->
<!-- Comment: Thu Oct  5 13;52;09 comment by...RDK -->
ARC CELL Slope = 1.6 ppm/hr


<!-- Date: Thu Oct 5 14:16:12 2000 -->
There have been high stress alarms on the autodialer.  In APACS on the sheet CDF2.MAGNET, set the local vaiable TORQUE_LIMIT (and its initial value) to 10.0.  That should quiet the alarm.
<!-- Author: R Sanders -->


<!-- Date: Thu Oct 5 14:17:30 2000 -->
Valved off tube trailer to labs.   Pressure in LABS is 91 psi.  
<!-- Author: Bruce -->


<!-- Date: Thu Oct 5 14:50:24 2000 -->
Put in 1 more purge bottle with LN2 turned off to the building. Still no change in slope in the arc cell. Conclude that there is no evidence that leak is associated with LN2 in Heat Exchanger. Reopened MV 1730 and PVXLN, reassembled PVXLP. PVX1 closed while filling the HTX LN2 pot.
<!-- Author: RDK,RR,RPS, KLS -->


<!-- Date: Thu Oct 5 14:51:00 2000 -->
<pre>arc cell at 10.05 ppm on compressor discharge</pre>
<!-- Author: RDK -->


<!-- Date: Thu Oct 5 15:24:10 2000 -->
Closed MV-3268H  Begin to observe plot for decrease in arc-cell reading.
<!-- Author: RR-RS-KLS -->


<!-- Date: Thu Oct 5 15:26:05 2000 -->
Arc-cell at 11.22ppm
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 15:29:37 2000 -->
<pre>closed block valves at DP guages except LLND and LLXLN.</pre>
<!-- Author: RDK -->


<!-- Date: Thu Oct 5 15:30:38 2000 -->
arc cell = 11.47 ppm
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 15:39:47 2000 -->
Found by-pass valves open and supply valve's to lead flow, flow meters.  Opened supply valves and closed by-pass's. 
<!-- Author: KLS -->


<!-- Date: Thu Oct 5 15:40:56 2000 -->
supply valves ere cl
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 16:10:05 2000 -->
Arc cell reading = 12.6 ppm starting to isolate the magnet 
Close EVMF, EVQR, EVCP and lead flows.
<!-- Author: RPS -->


<!-- Date: Thu Oct 5 16:14:03 2000 -->
ACELL=12.72
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 16:23:57 2000 -->
FOrgot to close PVMF just did that now.  ACell reads 12.95 ppm  
<!-- Author: RPS -->


<!-- Date: Thu Oct 5 16:32:29 2000 -->
ACell = 13.26 ppm
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 16:40:55 2000 -->
ACell = 13.45
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 16:50:41 2000 -->
ACell = 13.63
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 16:56:18 2000 -->
Contamination rate has not changed.  Arccell = 13.86 ppm 
<!-- Author: RPS -->


<!-- Date: Thu Oct 5 16:57:07 2000 -->
Rate = 1.5 ppm/hr
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 16:57:33 2000 -->
Isolate PVX1 & PVx2
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 16:59:39 2000 -->
ACell = 13.89
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 17:09:37 2000 -->
Acell = 13.92
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 17:19:57 2000 -->
Arcell reading bouncing from 13.94 to 14.01 with no real trend up or down Looks like line is flat
<!-- Author: RPS -->


<!-- Date: Thu Oct 5 17:28:04 2000 -->
Opened PVX1 & PVX2 with EVXJT closed pressurized the high side of the system  Arccell went up to 15.28 ppm as gas was brought in from LABS via EVLOSUC
<!-- Author: RPS -->


<!-- Date: Thu Oct 5 17:29:44 2000 -->
<pre>Swapped instrument and supply lines for PVNS and PVNI so that control system now directs the right valve</pre>
<!-- Author: RDK -->


<!-- Date: Thu Oct 5 17:32:36 2000 -->
Rain cap is off the 2" Helium vent and line is bagged to look for leaks
<!-- Author: KS -->


<!-- Date: Thu Oct 5 17:36:14 2000 -->
ACell = 15.54
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 17:43:22 2000 -->
ACell = 15.16
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 17:48:23 2000 -->
ACell = 15.33
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 17:58:48 2000 -->
ACell = 15.64
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 17:59:20 2000 -->
Closed EV101 
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 18:06:36 2000 -->
discharge pres.=205
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 18:22:15 2000 -->
<pre>CLC East and CLC West Chambers have been filled according to CDF-II Proc. 318 "Procedure to Pressurize and Empty the CLC Detectors" with Isobutane to 3 psi and Del Alspach has CDF-II Proc. 13, "Sign-Off Procedure Required before Flowing Flammable Gas To or Turning High Voltage On the CDF Detector Subsystems"</pre>
<!-- Author: Dave & Del -->


<!-- Date: Thu Oct 5 18:38:57 2000 -->
Open block an bleeds MV153 and MV155, EVJT still closed.
<!-- Author: RDK,RPS,KS -->
<!-- Comment: Thu Oct  5 19;47;04 comment by...RDK,RPS,KS  -->
Please avoid using HTML codes in comments. (click to clear this message)
<!-- Comment: Thu Oct  5 19;50;01 comment by...RDK,RPS,KS  -->
At approximately 1845 we bagged the 4" suction relief valve just outside the building (on building side of MV201H.  At 1945 we noticed that the bag has expanded slightly.  We will monitor this closely.
<!-- Date: Thu Oct 5 18:40:29 2000 -->
ACell = 17.16
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 19:26:31 2000 -->
Closed off block and bleed valves The only conclusion drawn was that a leak is probably on the suction side since we did not see any significant change when we flow through the tube side of HEX.  
<!-- Author: RPS -->


<!-- Date: Thu Oct 5 19:26:48 2000 -->
ACell=17.58
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 19:44:59 2000 -->
Reestablished cooldown flow to the magnet ACell = 17.72
<!-- Author: RPS -->




<!-- Date: Thu Oct 5 19:53:01 2000 -->
ACell = 17.72 ppm Dewar inlet = 150 K RBOBCNT = 161.4 K
<!-- Author: RPS -->


<!-- Date: Thu Oct 5 19:57:46 2000 -->
We closed the isolation valves (at the system end) for all the low pressure arc cell lines Closed MV3267, MV3268, MV3270.  Also the valves at the arc cell panel are closed MV 3258, MV3257, MV3256 which isolates those lines. 
Enabled PVNS and PVNI loops  
<!-- Author: RPS -->


<!-- Date: Thu Oct 5 20:16:54 2000 -->
ACell = 17.72
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 20:28:00 2000 -->
ACell = 17.84
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 21:02:12 2000 -->
ACell = 18.11 ppm We have bagged the suction relief and are sending it a small inerting flow (Helium from a bottle at .3 lpm) 
RBobCnt = 161 K      Dewar inlet = 112.1 K  Ramp enabled
<!-- Author: RPS -->


<!-- Date: Thu Oct 5 21:08:18 2000 -->
ACell = 18.2
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 21:21:14 2000 -->
ACell = 18.23
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 21:31:56 2000 -->
<table><tr><td><a href=/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=-63&button=yes target='xxx' onclick='jswindow()'; align=top><img src=/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=-63  width='250' align='top'></td><td>Arc Cell after bagging relief at 6:45 and sealing off arc cell lines to suction. Note that no change was made to the inert box.</a></td></tr></table>
<!-- Author: RDK, etc -->


<!-- Date: Thu Oct 5 21:37:42 2000 -->
ACell = 18.60
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 22:07:49 2000 -->
A CELL= 18.93
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 22:35:31 2000 -->
A CELL= 19.40
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 23:07:02 2000 -->
A Cell = 19.74
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 23:37:21 2000 -->
A Cell = 20.20
<!-- Author: {Quick_Entry} -->


<!-- Date: Thu Oct 5 23:58:21 2000 -->
Switched from A/E supply tank #1 to tank #2.
<!-- Author: Dave -->


<!-- Date: Fri Oct 6 00:01:59 2000 -->
A Cell = 20.52
<!-- Author: {Quick_Entry} -->


<!-- Date: Fri Oct 6 08:04:34 2000 -->
New iFIX software now installed on S1.  Bobbin temp is 146 K. Under ramp control with supply temp at 90 K. Switch to manual and shoot for 80 K gas. PVX1 = 40 %, PVX2 = 20 %, PVQR =100%, EVCP = 20 % 
<!-- Author: RDK -->


<!-- Date: Fri Oct 6 08:07:11 2000 -->
lead flows to RUN
<!-- Author: {Quick_Entry} -->


<!-- Date: Fri Oct 6 10:00:20 2000 -->
In the compressor house, I installed BA-PI3 on compressor suction at the same point as PCPSUC.  I also installed BA-PI4 on compressor discharge at the same point as PCPDIS.  BA-PI3 and BA-PI4 will be wired into ACNET by BEAMS technicians.
<!-- Author: R Sanders -->