 Friday, April 12, 2013, 13:28, Isaac Earle, Standard Operation, Target 1, Cooling, Cooling Packages Leak Tight
|
The T1 and T2 expansion tanks were filled on Monday April 8th. There was no change in the level when inspected today (April 12th). Visual
inspection of the packages also found no leaks. |
|
Friday, April 12, 2013, 17:33, Isaac Earle, Development, Target 1, Cooling, T1 & T2 high-temp limit switch installation, wiring, and commissioning complete
|
Installation, wiring, and commissioning of the high temperature limit switches for the T1 and T2 cooling packages was completed today as part of SAS
project SASP0120. The relay output from the switches was wired in series with the Central Safety System signals for T1 and T2 (cable number 13250
and 12250 respectively) in break-out panel #2 on the Meson Hall south mezzanine. There were already 3 other circuits wired in series with each signal |
|
Friday, April 19, 2013, 09:55, Isaac Earle, Development, Target 1, Cooling, T1&T2 cooling package safety/standards compliance upgrade complete (SASP0120)
|
Yesterday (April 18th) the T1 and T2 cooling package PRV outlet lines were routed to the active drain in the 1A tunnel. All items for the safety
and standards compliance upgrade for T1 and T2 as specified in Document-68861 are
now complete. |
Friday, August 23, 2013, 10:39, Isaac Earle, Repair, Target 1, Cooling, T1 Cooling Package Inlet Pressure (P1) Sensor 
|
The T1 cooling package inlet pressure (P1) has been dropping since approximately May 5, 2013 from the regular operating pressure of approximately
75psi to the present value of 47psi. An increase in the rate of decrease started around August 5th as well as increased noise in the signal. Plots
attached below. No corresponding change in the outlet pressure, and no change in the water flow rate (also no change in inlet and oulet temperatures) |
|
Monday, September 09, 2013, 16:13, Isaac Earle, Repair, Target 2, Cooling, Drop in T2 Cooling Package Water Level
|
On September 9th in the morning Ron Kuramoto noticed that the T2 cooling package expansion tank level was reading NOT OK for the warning level.
Looking at XSTRIP showed that the warning level tripped at approximately 1:50am on September 8th. The tank was refilled at 4pm on September
9th to the usual level (1/2" above the nut on the trip level float). The expansion tank level will be checked tomorrow and periodically throughout |
|
Monday, September 09, 2013, 16:22, Isaac Earle, Repair, Target 1, Cooling, T1 P1 Transducer Replaced
|
The BL1A tunnel was accessed today to assess a faulty reading from the T1 cooling package inlet pressure transducer (T1P1). The line was
first bled to remove gas bubbles which did not change the reading. The transducer was replaced with a new unit (OMEGA PX315-100GI). The pressure
reading returned to the usual value of approximately 74psi (faulty reading had been steadily decreasing over the last few months and was at approximately |
|
Wednesday, September 11, 2013, 16:13, Isaac Earle, Repair, Target 2, Cooling, T2 Cooling Package Water Leak Repair
|
The T2 cooling package was uncovered this morning and a leak was found coming from the Swagelok ball valve on the 3/4" target water outlet
line. The water was coming from the stem of the valve, indicating that water was leaking through the valve packing, rather than at the fittings for
the valve. The leak rate was approximately 1 drop every 5 seconds and a small puddle was visible on the top of the water reservoir. The water |
|
Wednesday, October 23, 2013, 15:30, Isaac Earle, Development, Target 1, Cooling, T1 & T2 High Temp Safety Switch Tested
|
An end-to-end test was performed on the new T1 and T2 high temperature safety switches yesterday during the maintenance day. The switch set
points were lowered below the current temperature and it was confirmed that all warning messages and XTPAGE status changes occurred as expected. |
|
Friday, January 17, 2014, 10:10, Isaac Earle, Standard Operation, Target 1, Cooling, T1/T2 Cooling Packages & Air Amplifier Shut Off
|
In preparation for Edi to vent the BL1A vacuum volume, the T1 and T2 cooling packages were both shut off. They will remain off until vacuum
is restored in BL1A in a few weeks time. This afternoon, water will be purged from the T1 and T2 targets using compressed air so that stagnant water
is not sitting in the targets for an extended period of time. |
|
Thursday, February 06, 2014, 17:05, Isaac Earle, Standard Operation, Target 1, Cooling, T1 & T2 Cooling Package Filters Changed
|
Water was drained from the T1 and T2 cooling packages, samples taken, and delivered to RPG.
All filters on the T1 and T2 cooling packages were changed except for the T1 demin. line filter which is hard to access and could not be properly
drained. This filter will be changed next shutdown when the area is more accessible while the resin cans are being changed. |
|
Monday, March 24, 2014, 18:14, Isaac Earle, Standard Operation, Target 2, Cooling, T2 Cooling Package & Air Amplifier Started
|
Bill Rawnsley completed an electrical check of the T2 profile monitor today from the Meson Hall mezzanine - All OK.
The T2 cooling package was refilled and started. There was no change to the T2 vacuum when starting the package. While running, the
package was visually inspected for water leaks - no leaks found. |
|
Friday, March 28, 2014, 13:59, Isaac Earle, Maintenance, Target 2, Cooling, T2 P1 Transducer and T2 Q1 Flow Meter Replaced
|
The T2 P1 pressure transducer (Omega PX315-100GI) and T2 Q1 Proteus flow meter (0150SSTF3) have been replaced with new units to address issues with noisy
signals. |
|
Thursday, April 03, 2014, 10:19, Isaac Earle, Standard Operation, Target 2, Cooling, T2 Cooling Package Resin Can Replaced
|
The resin can was removed from the T2 cooling package and transported to the warm cell. A replacement can with fresh resin was then installed.
A 12' sling and the standard four bridle was used to prevent the crane hook block from hitting the mezzanine railing on the south side.
The T2 package was started and inspected for leaks - none found. |
|
Thursday, April 03, 2014, 16:35, Isaac Earle, Standard Operation, Target 1, Cooling, T1 Cooling Package Started
|
The T1 cooling package was started around 2pm today. There was no change to the T1 volume vacuum during startup.
The package was inspected for water leaks: None found.
The demin loop flow (Q2) was adjusted to ~1.5gpm. |
|
Wednesday, July 02, 2014, 16:56, Isaac Earle, Repair, Target 1, Cooling, T1-P2 and T2-P1 pressure transducers replaced.
|
The T1-P2 (outlet) pressure transducer was replaced to address an erroneous signal. The XTPAGE value now reads as expected.
The T2-P1 (inlet) transducer was also replaced to address a noisy (and worsening) signal. Replacing the transducer seems to have had no effect
on the XTPAGE values. A possible controls issue is suspected and Jamie Cessford will be notified so that the matter is directed to the appropriate |
|
Thursday, November 06, 2014, 17:18, Ron Kuramoto, Repair, Target 2, Cooling, 1AT2 Collimator B, faulty Thermister water out temperature
|
On 14Oct2014, the 1AT2 Collimator B water outlet temperature rose to 100o C.
Troubleshooting the T2 Collimator B water out temperature (T7) by swapping it's analog
signal in PIE box #2 with T2 Collimator A water out temperature (T6) to see if problem follows. See if unplugging T7 signal causes Safety Page SV7 1A Collimators |
|
Thursday, November 06, 2014, 17:22, Ron Kuramoto, Repair, Target 2, Cooling, 1AT2, faulty Thermister water out temperture
|
Summary: |
|
Monday, January 12, 2015, 16:35, Isaac Earle, Standard Operation, Target 1, Cooling, T1 & T2 MRO Status
|
The following tasks have been performed at T1:
- T1 monolith painted using grey two part epoxy paint
- Video inspection taken while package running. Small leak from both valves on H.E. secondary side (video on Isaac's PC, too large to upload) |
|
Friday, January 23, 2015, 13:28, Isaac Earle, Repair, Target 2, Cooling, T2 Cooling Package Thermistor Defeats
|
Both defeats applied to T2 cooling package thermistors were removed today (Col. B interlock was jumpered, and the target water inlet and outlet signals
had been swapped). It was confirmed that all thermistors are now wired correctly. The readback of both target water thermistors is currently
unstable. Inspection of the Lemo connectors showed that the internal plastic parts of all connectors were damaged or missing. If the T1/T2 |
|
Tuesday, January 27, 2015, 17:38, Isaac Earle, Repair, Target 1, Cooling, T1 Cooling Package 3/4" Valves Rebuilt - T1 MRO Complete
|
- Both 3/4" ball valves on the T1 cooling package target water circuit were rebuilt, leak tested with house air pressure, and reinstalled
- The 3/4" ball valve on the T1 heat exchanger secondary side was replaced with a new unit
- The 3/4" needle valve on the T1 heat exchanger secondary side was rebuilt, leak tested with house air pressure, and reinstalled |
|