Missing heli coils installed this morning.

Threads had to be chased with tap for 1/4-20 heli coil and missing countersinks hand applied to allow for installation. Care was taken to ensure no "swarf" was spread and operation was super clean. Chased holes blown out with canned air and a vacuum placed on the other side.

Final assembly can and will now continue.

On Tuesday morning I attempted to complete assembly of the source tray for TM2 however discovered that 3 1/4-20 x 0.25 titanium helicoils had not been installed into the mounting plate as they should have been. Checked and asked around for them but to no avail. I have ordered some, they should have been here yesterday.

Also, I have noticed that the threaded portion of the target pins ITA0328A appear to be too long and as such may be (are indeed) touching the supports. I am going to remove 1/32" or appropriate to remedy this problem (drawing shows 0.035 clearance).

TM2 tray alignment was confirmed with the alignment tray this morning:

Front target 0.000 vertically, 0.000 horizontally.

Back target 0.003 low, 0.000 horizontally

Also, the master target jig was installed and measurements taken:

Front master target - 0.007 high, 0.000 left/right

Rear Master Target - 0.007 high, 0.000 left/right

Rear tray target - 0.003 low

TM2 Tray Alignment is complete except for verification with alignment tray.

First attempt results were:

Front Target: Low 0.011, Left 0.011

Rear Target: Low 0.013, Left 0.002

Final iteration:

Front Target: Vertical 0, Horizontal 0

Rear target: Vertical - 0.003 low, Horizontal 0

Pictures were very hard to get but are below...camera is impossible to get square to lens so pictures are not entirely representative of looking through transit.

Countersink problem with supports has been remedied. Scratches, dings, and pitting has been buffed out and supports re-cleaned and re-assembled.

Friedhelm was consulted regarding the appearance of fine scratches on the main stand-off insulators...the best two matching ones were chosen and assembly continued.

Alignment will start tomorrow.

 Found both VFDs with OF3 fault (over voltage during constant speed operation).

Thursday, January 08, 2015, 16:37: Cycled power on the chiller to clear faults.

Final assembly of the source tray for TM2 was started this morning.

Sliding tray was received from keensert installation and cleaned.

Mounting plate/ionizer tube location jig was rechecked against assembly ITA3136...Mounting plate was loosened, jigs for centering the ceramic shields installed and fasteners re-torqued to 57 in lbs.

Upon attempted assemble of ITA3536 and 3537 (support frames) it was noticed that the countersinks were not deep enough...the heads of the screws protrude and would interfere with/damage the support insulators. These items have been given to Dan to have the counterbores adjusted...drawing should be changed to insure a small gap.

Also, one of the support frames has marks on its side that may be a high voltage issue.

Upon inspection of the components in question (ITA3540 & 3538) it was found that they have been made to spec and model; however the spec& model does not allow for adequate theoretical clearance given tolerances. Countersinks will be adjusted and changes documented.

"Pitting" will attempt to be lapped.

TM4 waterlines have been disconnected and purged in ITE. The TM4 vacuum system is still in operation.

No Source Tray installed. Loop on cooling circuit D. All other circuits blanked off.

Voltages stated below are set point voltages. These corresponds reasonably well with the local read backs on the power supplies. The read back voltages in EPICS are somewhat lower.

Wednesday, January 07, 2015, 09:16: 20 / 10 kV (BIAS / EL)

Wednesday, January 07, 2015, 09:20: Vacuum responses from BIAS 27 kV. Corresponds to each increase in bias voltage.

Wednesday, January 07, 2015, 09:40: 30 / 15 kV 

Wednesday, January 07, 2015, 10:28: Sparking and vacuum responses continues with every 100 V BIAS increase. If the voltage is lowered and brought back up, no sparks are observed; the module is conditioning.

Wednesday, January 07, 2015, 12:09: 34 / 17.5 kV

 Wednesday, January 07, 2015, 13:05: 35 / 17.5 kV

Wednesday, January 07, 2015, 14:50: 37.5 / 20 kV

Wednesday, January 07, 2015, 15:40: 38.5 / 20 kV

Wednesday, January 07, 2015, 16:02: BIAS and EL power supplies off.

Thursday, January 08, 2015, 10:00: HV condtioning continues

Thursday, January 08, 2015, 10:11: 35 / 20 kV

Thursday, January 08, 2015, 10:29: 38.5 / 20 kV

Thursday, January 08, 2015, 11:43: 40 / 20 kV

about 15 sparks per hour (5 / 20 min)

Thursday, January 08, 2015, 14:41: 42.5 / 22.5 kV

Thursday, January 08, 2015, 15:08: Communication lost with RGA. Could not be recovered.

Thursday, January 08, 2015, 15:58: 45 / 22.5 kV

Thursday, January 08, 2015, 16:27: BIAS and EL power supplies off.

Friday, January 09, 2015, 08:52: 45 / 22.5 kV

Tried to recover RGA by unplugging and plugging power cord, but no success.

Friday, January 09, 2015, 10:45: Increased sparking at 48 kV - reduced to 47.5 kV

Friday, January 09, 2015, 11:53 : 50 / 25 kV

Friday, January 09, 2015, 12:28: ~ 1 spark / minute for the last 10 min

 Friday, January 09, 2015, 15:27: ~25 sparks / hour for the last 20 min

Friday, January 09, 2015, 16:18: ~18 sparks / hour for the last 20 min

Monday, January 12, 2015, 09:31: 50 / 25 kV

Monday, January 12, 2015, 10:31: No sparks for 20 min after ~30 min of conditioning.

Monday, January 12, 2015, 12:24: BIAS / EL power supplies tripped on conductivity (spark)

Monday, January 12, 2015, 13:13: 55 / 27.5 kV

Monday, January 12, 2015, 14:32: 1 spark for the last 10 min

Monday, January 12, 2015, 15:38: 57 / 30 kV

Monday, January 12, 2015, 15:48: ~60 sparks / hour for the last 10 min

Monday, January 12, 2015, 16:00: BIAS and EL power supplies off.

Tuesday, January 13, 2015, 08:45: 55 / 27.5 kV

Tuesday, January 13, 2015, 09:18: ~60 sparks / hour for the last 10 min

Tuesday, January 13, 2015, 10:17: No sparks for the last 10 min

Tuesday, January 13, 2015, 10:30: 57.5 / 30 kV

Tuesday, January 13, 2015, 11:34: 59 / 30 kV

Tuesday, January 13, 2015, 13:23: No sparks for the last 25 min 

Tuesday, January 13, 2015, 14:11: 60 / 30 kV

Tuesday, January 13, 2015, 14:42: Spark tripped TP2 and TP1S and both power supplies

Tuesday, January 13, 2015, 15:02: 60 / 30 kV (local read back 60.5 / 30 kV, 0.1 / 0.15 mA)

Tuesday, January 13, 2015, 15:38: BIAS and EL power supplies off.

Wednesday, January 14, 2015, 08:34: 60 / 30 kV

Wednesday, January 14, 2015, 10:41: 3 sparks / hour for the last 60 min

Wednesday, January 14, 2015, 13:39: 61 / 30 kV

Wednesday, January 14, 2015, 14:29: 61.5 / 30 kV (local read back 62 / 30 kV, 0.1 / 0.15 mA)

Wednesday, January 14, 2015, 15:40: ~ 6 sparks / hour for the last 20 min

Wednesday, January 14, 2015, 16:07: TP2 found to be tripped off. Restarted.

Wednesday, January 14, 2015, 16:23: 60 sparks / hour for the last 20 min

Wednesday, January 14, 2015, 16:28: BIAS and EL power supplies off.

Thursday, January 15, 2015, 08:27: 60 / 30 kV

Thursday, January 15, 2015, 11:24: ~35 sparks / hour for the last 20 min

Thursday, January 15, 2015, 14:09: 12 sparks / hour for the last 60 min

Thursday, January 15, 2015, 15:33: 58 / 30 kV

Thursday, January 15, 2015, 15:49: 56 / 30 kV

Sparks observed both at 58 and 56 kV

Thursday, January 15, 2015, 15:57: BIAS and EL power supplies off.

Monday, January 19, 2015, 09:53: 55 / 30 kV

Monday, January 19, 2015, 11:44: ~20 sparks / hour for the last 20 min

Monday, January 19, 2015, 12:53: ~10 sparks / hour for the last 20 min 

Monday, January 19, 2015, 16:30: 50 / 30 kV

Monday, January 19, 2015, 17:31: BIAS and EL power supplies off.

Tuesday, January 20, 2015, 08:54: 40 / 20 kV

Tuesday, January 20, 2015, 09:05: 50 / 25 kV

Tuesday, January 20, 2015, 13:43: 8 sparks / hour for the last 60 min

Tuesday, January 20, 2015, 16:43: 3 sparks / hour for the last 60 min

Wednesday, January 21, 2015, 09:10: 40 / 20 kV

Wednesday, January 21, 2015, 09:20: No sparks

Wednesday, January 21, 2015, 09:23: 50 / 25 kV

Wednesday, January 21, 2015, 10:33: 3 sparks / hour for the last 60 min

Wednesday, January 21, 2015, 13:43: 6 sparks / hour for the last 60 min

Wednesday, January 21, 2015, 16:07: 5 sparks / hour for the last 60 min

Wednesday, January 21, 2015, 16:09: BIAS and EL power supplies off.

Thursday, January 22, 2015, 09:11: 40 / 20 kV

Thursday, January 22, 2015, 10:14: No sparks

Thursday, January 22, 2015, 10:16: 45 / 25 kV

Thursday, January 22, 2015, 11:26: No sparks

Thursday, January 22, 2015, 16:57: No sparks

Thursday, January 22, 2015, 16:57: BIAS and EL power supplies off.

Friday, January 23, 2015, 09:28: 40 / 20 kV

Friday, January 23, 2015, 09:39: No sparks

Friday, January 23, 2015, 09:40: 50 / 25 kV 

Friday, January 23, 2015, 16:16: No sparks.

Friday, January 23, 2015, 16:17: BIAS and EL power supplies off. 

Monday, January 26, 2015, 09:17: 40 / 20 kV

Monday, January 26, 2015, 09:29: No sparks

Monday, January 26, 2015, 09:30: 50 / 25 kV

Monday, January 26, 2015, 09:52: No sparks

Monday, January 26, 2015, 09:53: 55 / 27.5 kV

Monday, January 26, 2015, 16:55: No sparks for 7 hours. BIAS and EL power supplies off. 

Tuesday, January 27, 2015, 09:10: 40 / 20 kV

Tuesday, January 27, 2015, 09:16: 50 / 25 kV  

Tuesday, January 27, 2015, 09:31: 55 / 27.5 kV

Tuesday, January 27, 2015, 09:51: No Sparks

Tuesday, January 27, 2015, 09:53: 57.5 / 30 kV (one spark while increasing BIAS voltage)

Tuesday, January 27, 2015, 10:14: No sparks

Tuesday, January 27, 2015, 10:18: 58 / 30 kV. Some sparks

Tuesday, January 27, 2015, 10:46: 59 / 30 kV. Some sparks while increasing BIAS voltage

Tuesday, January 27, 2015, 11:43: 59.5 / 30 kV. Some sparks while increasing BIAS voltage

Tuesday, January 27, 2015, 13:24: Spark

Tuesday, January 27, 2015, 13:33: 11 sparks for the last 10 min

Tuesday, January 27, 2015, 13:33: 59 / 30 kV

Tuesday, January 27, 2015, 13:35: 57.5 / 30 kV 

Tuesday, January 27, 2015, 16:14: ~3 sparks / hour for the last 60 min

Tuesday, January 27, 2015, 16:53: ~3 sparks / hour for the last 60 min

Tuesday, January 27, 2015, 16:55: BIAS and EL power supplies off. 

Wednesday, January 28, 2015, 09:11: 40 / 20 kV

Wednesday, January 28, 2015, 09:17: 50 / 25 kV 

Wednesday, January 28, 2015, 09:27: 55 / 27.5 kV 

Wednesday, January 28, 2015, 10:35: 11 sparks observed. BIAS and EL off - preparing for power outage

No leak detected on either He-detector (connected directly to Service Cap) or on RGA. See attached screen shots.

A vacuum increase (air only on RGA) was seen when de-pressurizing circuit I.

4 shielding blocks have been moved out of  ITE to block storage area. Fiona did the survey and with me during the move.

 by "enable staging" button. MP3 has to be turned off-on to open WPV1

The RGA showed no response to He-spray on the Service Cap. He stable at 3.5E-9 T partial pressure, water at 1.3E-6 T. IG1 at 9.9E-8 T

Hello all,

Access was required this morning to the TCS TK2 Expansion Tank to open a valve and re-fill the tank.

As the access path to this tank lacked any form of Fall Protection, Fall Arrest was employed.

Worksafe BC Part 11 Section 11.2 requires fall protection to be employed at elevations greater than 3 meters.  The expansion tank is located at an elevation far exceeding this regulation.
http://www2.worksafebc.com/publications/ohsregulation/part11.asp

The worker, Allon Messenberg, was fitted with a harness, personal self-retracting lifeline / lanyard with shock-pack, and carried two steel rope ring-ended slings with him to tie off to the structural beams overhead.  All products used were DBI-Sala safety products, which are kept in the Remote Handling machine shop Fall Protection Equipment lockers.  Several RH group members have keys to this locker, including me.

Three configurations were required to gain access to the tank (photo attached):
Configuration 1: Traversing the section between the 2nd floor offices and the ventilation duct.
Configuration 2: Traversing the section between the ventilation duct and the "cross point" of the structural beams.
Configuration 3: Tied-off to the "cross point" of the structural beams and working within the reach limits of the personal SRL and shock-pack.

Transitions between the three configurations required brief moments of un-clipping from the harnesses.  This will be solved in the future via the use of additional carabiners and lanyards.

Operations has advised me that they have observed either TRIUMF workers or contractors working in this area without wearing Fall Arrest equipment.  My request is for staff and operations to stay vigilant in observing access to this area. 

Any work performed in this area without the usage of fall arrest must be reported in an NCR.

I welcome any comments from those who have ideas for improving the safe method of access to this tank.

The cooling package is described in the TCS operating manual, Document-103881.  Page 8 states clearly that Fall Arrest is required to access this valve.

Regards,

Grant

Anders Mjos wrote:

Anders Mjos wrote:  The level dropped below 15 in over the weekend. MP2 stopped, but MP3 condtinued pumping.  e-fault submitted and Niel Wong has been contacted. Niel Wong came and had a look at the system. We decided to close the circuit as the water is no longer used with the new power supplies. The circuit will be monitored, but not repaired unless it is needed again.

The valved off water circuit has been valved off and  TCS:WFB2:BIASSW1 and TCS:TCM2:BIASSW1 have been removed from the power supply interlock chain by Dave Morris.

Anders Mjos wrote:

Anders Mjos wrote:  The level dropped below 15 in over the weekend. MP2 stopped, but MP3 condtinued pumping.  e-fault submitted and Niel Wong has been contacted. Niel Wong came and had a look at the system. We decided to close the circuit as the water is no longer used with the new power supplies. The circuit will be monitored, but not repaired unless it is needed again.

 Due to the water leak, the expansion tank needed topping up. It was filled from 14 in to 20 in. See work permit I2014-12-15-2.

Anders Mjos wrote:

The level dropped below 15 in over the weekend. MP2 stopped, but MP3 condtinued pumping.

 e-fault submitted and Niel Wong has been contacted.

Niel Wong came and had a look at the system. We decided to close the circuit as the water is no longer used with the new power supplies. The circuit will be monitored, but not repaired unless it is needed again.

 The level dropped below 15 in over the weekend. MP2 stopped, but MP3 condtinued pumping.