HALCW resin can flow meter replacement is done. Less that 100 mL water was drained to a small tray during the job. RPG checked the water. Less than 20 counts. Water are dumped the high active sump.   The HALCW MP1 is started. No leak on new gauges and fittings. Old gauge is labeled , bagged, and stored in TH.

HALCW pump ITC:MP1 has been started. water are supplied to both ITE and ITW system. all water signals for individual circuits work fine. no major leak on system. Some small water seeping from small ball valve stems are found in ITW. they will be fixed soon.

HALCW pump ITC:MP1 and MP2 phase current draw measurement result: water supplied to both station. MP1: Black 17.0A, blue 16.9A, red 16.7A.   MP2: black 17.3A, blue17.8A, red 17.3A.    The results are good.  No concern on both motors.

ITW, ITE, ITW +ITE total , and low active cooling water return flow meter transmitters are inspected and calibrated.  Result:

ITW , PX-750-06Di , Calibrated to  4-20 mA for 0 to 6" H2O DP, linear.    Transmitter works fine.

ITE. PX-750-06Di, calibrated to 4- 20mA for 0 to 6" H2O DP, linear.   Transmitter works fine.

ITE+ITW total, PX-750 -30 SQDI.  It looks like electronic board for square root output is broken. It can not be calibrated  to 4mA @ 0 inch H2O DP. The transmitter is calibrated to 10.25mA - 25.25mA for 0 to30" H2O DP, linear. Transmitter works fine.

 Low active cooling water return, Px-750-30di, smart.  The transmitter is broken. The output current stuck at 44.5mA on all DP.  I tried zero and reset it by following instruction manual, but failed to bring it back. The electronic boards are broken mostly. The production is discontinued by Omega Engineering. A new Omega transmitter PX3005-25WDWBI (linear) will be ordered for its replacement.

2023-06-28: A new Omega transmitter PX3005-25WDWBI (linear) has been installed back to LALCW system in target hall. Transmitter is calibration by manufacturer @ 4-20mA output@0 to 25 in H2O DP. Control group will finish the cable connection in TH, electrical room, and reprogram   on epic page on July -11th.

2023-07-12: Cable connection, formula reprogram, and epic page reboot are done yesterday by Ray.M. New transmitter works fine. All flow rates are displayed on epic page properly with new program formulas.

HALCW flow sensors replacement job is done. All ITE/ITW(except ITE HS) return line water flow sensors including paddle wheels and coils are replaced.  After job, water interlock signal have been checked in electrical room .  Everything works fine. Visually inspections for possible water leak on HCLCW system have been done as well. one valve on ITE dump return line has a very small water seeping through valve stem. I will watch on it.  Other than that,  No major concern.

2023-03-08: leak on 1/2" ITE dump return line valve is fixed.

HALCW O2 level sensor annual maintenance is done. sensor membrane has been changed and electrolyte has been refilled. gauge is calibrated. It works normal after the job.

HALCW ITC:MP1/MP2 pump and motor temperature measurements result:

MP1: pump discharging  port: 78F,  motor rear bearing house:72F  , Motor housing 140F(60C). 6F difference between them is less than 15F manufacturer clarified up limit in instruction manual. 

MP2: pump discharging port:78F,  motor  rear bearing house:72F, Motor housing 122F(50C).

MP1 is better than MP2 on motor status. It could be seen on phase current measurements as well.

Other notes on pump performance:    total flow rate 60GPM , discharging gauge pressure  99 to 100 psi on both pumps with one station all of TM water circuits bypassed + other station  two of TM water circuits bypassed + both stations 2A beam related water circuits  on(2X5).

HALCW ITC:MP1/MP2 motor phase current measurement is done by Joel from electrician group. MP1:17.1A/17.2A/16.7A.  MP2: 17.9A/17.9A/17.3A.   19.5A is manufacturer notified on full load phase current.on operating  instruction manual. 

 Travis and I completed an electrical check on the wiring harness for the devices on the ground plane. All lines passed 500V with the megger except for PNG and the BTM steerer. Those devices had a short to ground. of ~1.4ohm.

See attached pdf and DocuShare for more photos. It may be possible to clean some of it from the Ground Electrode.

Further attempts to localize the leak were unsucessful. The circuit was pressurized with 60 psi air and snoop solution was applied to both the braze joints and the mating surface between the two halfs of the water blocks. Unfortunately, no visible bubbles could be dectected.

This was reported to Grant and Pierre and it was decided to continue with removing one of the vcr gaskets from the optics cooling lines (on the same circuit) and replacing it with a gasket with a sector cut out to allow this circuit to be pumped out and eliminate any virtual leak type response. The feedthru at the service cap will be capped.

Areas that had snoop solution on them were rinsed with methonal.

A cursory inspection of the extraction column was preformed and some pictures of the back side of the mounting plate and surrounding area were taken as there was some interesting discoloration found in the area below the back of the 9 pin connectors.

Picutres of the snoop procedure can be found at https://documents.triumf.ca/docushare/dsweb/View/Collection-9994

On Monday, March 11 the containment box was removed from TM4 and a vacuum leak check preformed in an attempt to locate the leak in the ground electrode circuit.

Following Pierre's work plain helium was sprayed was the highest joint accessible towards the lowest.

A two second spray of helium was applied to the first joint (the reducer from the service tray to the line that goes to the service tray side of the water block connection), no response from the leak detector after 1 minute.

 two second spray of helium was applied to the braze joint of the servive tray side of the waterblock connection; almost immediate response from the leak detector (see David Wand for actual values for leak rate).

The inital joint at the reducer was rechecked to insure the response was not just a risidual slow response from the reducer joint and confirmed by no response after 2 miniutes that it was not.

The braze joint at the service tray block was then tested again with a two second spray and again almost an imediated response.

A meeting was conveined and decided to pressurize this circuit with air and apply snoop solution to the suspect area to try to identify wether the leak is in the braze joint or possibly c-seal...This will take place on Tuesday, March 12th.

The containment box has been re-installed and the window waterlines reconnected and leak checked.

The window lines did pass the leak check, however the leak dectoctor did not pump down past 5.8 x 10-9.

The front cover has also been reinstalled.

I have requested that the module have an electrical check before it moves as the containment box has been off as well as the water blocks being leak checked. Either one of these procedures could causes the water liunes and blocks to alter there position sightly which could cause as short...this is why I have requested an electrical check.

Anders Mjos wrote:

See attached pdf and DocuShare for more photos. It may be possible to clean some of it from the Ground Electrode.

 Chad cleaned the GND electrode yesterday June 26th - see attached PDF. Photos on DocuShare.

 Further HV testing was completed today from ~2:00 until 3:00. The resistivity of the water was 11.7 - 12.7 Mohm. The EE was turned on to 1500 V and had a leakage current of 1.465 mA with a inline and ballast resister of 20 kohm and 1 Mohm respectively. In addition to this all of the CB were turned on to 500V. The voltage on the source tray with all bias items tied together and the voltage was then raised to 30kV in 5kV steps. It was then raised until 37kV in 1kV step at which point the first spark was detected. Steps were then reduced to 500V until 39.5kV was achieved. Sparking was noticed when stepping up from one voltage to the next and steps were reduced to 100V. At 39.7 kV there were several sparks and the voltage was held for 8 minutes until there had been at least 4 minutes since the last spark. Voltage was increased to 41.2 kV at 292.97 uA when a spark caused the HVCLTBHT paddle wheel flow sensor to trip. Flow was affected but the interlock was tripped due to noise and as a result the BIAS and EE voltage dropped to zero. At this point the required data had been collected and it was decided to shut the station down. RGA scans were taken during the test and are attached. The edited data with graphs is attached in the excel folder. PNG1 was not monitored as it has failed.

The rga application is available at
http://www.thinksrs.com/downloads/soft.htm

The following four pails were moved from the main storage vault to the mini storage vault, to stage for shipping in Jan. 2024:

1. Pail 260 (SiC#41), Tray 5B
2. Pail 271 (SiC#42), Tray 2B
3. Pail 246 (Nb#10), Tray 6C
4. Pail 265 (UCx#36), Tray 2A

There is current one open slot in the mini storage vault which is planned for the Ta#58 target (formerly in Pail 211, to be repacked in Dec. 2023).

Target Index spreadsheet updated.

See attached printout with mini storage status.

Aurelia and I investigated this current limit issue May 8th. First, By separating TM3 from TCS. we found the problem is on TCS side. We did a Megga test on TM3 as well. TM3 is good at 1KV megga test. After that, The insulators between TCS to ground is test. they are good which could hold 1G ohm at 1000V megga test. So the problem should be on power supply side  including power supply itself ,cables and transformer. Later, Tom and John found the TCS bias HV cable from power supply to HV chase top in faraday cage is broken down. It can not hold 5KV on HV test now. This cable should hold 100KV. But not this time. Tom also found  the adapter on Faraday cage could be designed in a better way. The broken cable was removed yesterday. John and Tom will order an exactly same cable from Glassmen.

David W. has installed two SST Proteus flow meters, model OV7006FTA32, on ITW Heat Shield and Coil. The flow meters are connected to a power supply and a data logger in the electrical room.

The Heat Shield flow meter has SN 00278112 and is on the Black wire pairs and connected to CH3 & CH4 on the logger.

The Coil flow meter has SN 00278113 and is on the Green wire pairs and connected to CH1 & CH2 on the logger.

The first channel (CH1, CH3) is temperature in degrees Celcius and the second channel (CH2, CH4) is flow rate in liters per minute.

A camera has been placed on the logger.

Flow rates today (2014-04-04):

HS        8.2 - 8.3 lpm
COIL    8.0 - 8.1 lpm

Calibration sheets

UPDATE 2014-04-11: Corrected HS to CH3 & CH4.

PDFs of temperature and flow traces are available on DocuShare

Monday, April 28, 2014, 09:27. p+ off since 8:20

Tuesday, April 29, 2014, 09:28: p+ 30 uA

Monday, May 05, 2014, 10:49: p+ off since 8:39
(Downloaded data and updated traces on DocuShare)

 Wednesday, May 14, 2014
(Downloaded data and updated traces on DocuShare)

Coil not used on TM1. Data and plots on DocuShare

Friday, June 13, 2014, 10:30. ITE receving p+

 Monday, June 16, 2014, 09:30: p+ off for maintenance day

 Thursday, June 19, 2014, 16:14: 10 uA p+ on ITW

Tuesday, July 08, 2014, 10:32:

Data uploaded to DocuShare