TM1 inside service cap surface and shielding plug surface are visually inspected yesterday. No rust has been found. I cleaned all rust on top of TM1  today.  Rust on TM1 silo  top plate are cleaned as well.

-------- Forwarded Message --------

Hi Curtis

Further to the emergency service call at the Isac Target Hall on Thursday March 23rd, we advise as follows:

It was reported that the hoist was making an unusual noise and that there was a strong brake odour during operation.

The lift was completed using the auxiliary hoist.

A man-lift was arranged and Senior Service Technician Tom Kauss attended site the next morning to troubleshoot.

He determined that one of two hoist brakes (walkway side) had a strong odour and on closer examination it appeared that the 

brake lining material was breaking down and particulate lining material was getting caught between the lining and the discs.

These lining fragments were rubbing and burning off during the hoist operation.

The end cover of the brake had an accumulation of brake lining fragments 

The lining was not overly worn, but appears to be becoming friable, perhaps with age or exposure to radiation.

The brake was cleaned with compressed air to remove the friable material and thoroughly tested. 

A test load of approximately 10 tons was lifted and the hoist handled the load without issue

The brake fragment issue did not recur while we on site and the hoist was recommissioned for use.

To guard against the likely recurrence of this condition on this critical application crane, and as both brakes have seen identical conditions in operation, 

we recommend that both brake assemblies be replaced.

The brake assembly would include the brake coil, friction discs, steel brake discs and the brake springs

TRIUMF does not have a spare brake on hand, therefore one of the removed brakes could be rebuilt and kept on hand. 

Two (2) each  XL-60009637 Complete Brake Assemblies   $ 5,706.00  Each

One (1) only XL-60009674 Brake Repair Kit $ 2,435.00

            For Rebuild

One (1) only XL-52272125 Brake Spring Kit $     59.72 For Rebuild

Installation & Testing of New Brakes estimated at: $ 1,250.00 Lot

We have one brake in stock in our Vancouver Service Depot. A second brake is available Ex-Ontario

FOB Site

Applicable Taxes Extra

Quote Valid for 30 days, subject to prior sale.

We are available next week to perform this work on site.

Please let us know if you have any questions or if you would like us to proceed.

Best Regards

          Aidan

------------------

Aidan C. Gordon

General Manager

aidan@gordoncrane.com

Gordon Crane & Hoist Inc.

Celebrating 34 years of Excellence (1983-2017)

www.gordoncrane.com

Toll Free 1-866-HOIST-IT

              (1-866-464-7848)

Tel:  (604) 324-2441

105-8475 Ontario St

Vancouver BC  V5X 3E8

Privilege and Confidentiality Notice
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Installation by Marshall. Dave M from controls adjusted circuitry to get TCS:MP1 to start.

Work is being done in preparation for the Module Move Ventilation SAS project

Chad and I did leak check on TM1 HS line at SHC. 0.0XE-9 atm.cc/sec.  No leak.

Roughing down overnight. Turbo pumps are started this morning. Everything looks good so far.

 We have a ram installed on SHC pole which is 0.5 meter to  module shielding block surface. the readings we got today during TM3 move:
at containment box center (highest reading): 3.14 msv/hr.
at bottom  of shielding blocks: 960 usv/hr.
at 1/4  of  shielding blocks height from  bottom :700usv/hr.
at 1/2 of shielding blocks height from bottom: 340usv/hr.
at 3/4 of shielding blocks height from bottom:140u/sv/hr.
   The Ram is behind the pole and measured the surface which is 90 degree right side of that opened service tray side. 

A video inspection of the lower service tray was performed this morning. Camera was inserted upwards into the service tray/service chase from the containment box. One potential spark mark was identified as well as epoxy not flush with insulator. Fiberglass does not extend into service tray/chase much and does not look, from initial inspection that it will be too difficult to remove.

Video can be found in docushare Document-142295

LD  BLR :0.0 X E-9 atm.cc/sec. BP:0.0XE-4 torr. helium 70 psi. 3 minutes on each circuit

There is a smallleak HS which we did not see before. The HS is checked in SHC  with helium spray yesterday. We did not see the leak . We checked this HS line every time when new target was installed. So mostly, this small leak is from VCRs connected to new target. But, we can not confirm it.  Still this line will be checked on next new target. We should have a better understanding when checking next time.  Other line are almost same as we checked in last year November. I did not see essential change.

Gordon Crane technician Tom Kauss finished the replacement of the east side main hoist brake assembly. A new set up is installed. he adjusted gap too close during first time try. So, the smell appeared when operate the brake. He increased the gap to a proper distance then. It looks like everything works fine now. Still, The brake need to be tested with 10K lBS load on it. We will do the load test on next Thursday when he come here to replace west side brake assembly.  Before that, No module move or other heavy lifting action should be fulfilled on TH crane.

2017-04-20. Tom Kauss finished the replacement of west side main hoist brake assembly. The old set up will be rebuilt, and stored as spare for the future. The load test is done.  10k lbs load was used for testing. Brakes work fine. No strange noise and smell has been found during the test. 

Update schedule to show job process in TH. See attachment 1,2.

Anders and I found a low frequency issue(13hz only) on TCS TGHT flow sensor when doing TM4 conditioning. By trouble shooting, We found the module water lines are good. the restriction cause this problem in on TCS supply or return water lines to TGHT.  I switched TGHT lines with MSP water lines. The wheel frequency on TGHT is 67.0hz which is pretty high. Now, MSP is using the original TGHT water line(flow sensor frequency 13hz). Flow sensors and thermocouples are switched as well so no control system change is needed on epic page. Everything are re-labeled in TH.  With less brazing joints closing to heater source, the MSP line should be ok. By further troubleshooting this issue, I think the problem on this low flow sensor frequency problem is on those 1/2" Parker gray water lines inside that big  6" white pipe.  See attachments. The lines are are twisted, and could be squeezed in my view. Since everything is enclosed in that big pipe, It is hard to tell where the lines are squeezed and cause this restriction. Comparing to an open guide chase, this round pipe makes everything  difficult. Hard to trouble shooting , hard to remove lines or add new lines. It only looks beautiful. I tried all I can do, But, I have no quick solution to solve this problem permanently.  Maybe, Rob walker and his technicians has better skill or more strength on removing old lines, or adding new lines to solve the problem. 

The TCS bias was turn off before that. The TM2 and TCS are still under vacuum now.

 When lifting up TM2 (20000lbs) this afternoon, TH crane has a strange noise on main hoist. The module was lift up less than 1 feet.when strange sound was noticed.  The module move was stopped right away,and module  was lowed back to SHC. The strange noise was confirmed later with SEG block six inches lifting up. Gordon crane technician will be here to tomorrow morning to investigate the problem.

TCS IG1S  is switched on as well. The reason to start the pump is to prepare a possible extended TM2 conditioning at TCS caused by TH crane issue. TCS:TP1 and TP2 are not switched on for this.

Below is a report on the ISAC Target Hall crane brake issue observed yesterday and addressed today:

- On April 13^th, both the East and West hoist brake assemblies were replaced by Gordon Crane & Hoist, after David observed a burning smell

- The East assembly was replaced with a completely new brake assembly from Kone crane

- The West assembly was replaced with a refurbished assembly, which used the East assembly housing fitted with a rebuild kit by Gordon Crane

- Yesterday while preparing TM3 for a lift, David noticed a vibration / rattle sound coming from the West hoist brake

- This issue was only observed when starting the hoist from a complete stop, at the slowest possible upwards hoist speed

- Once the hoist speed increased, the sound went away, even after returning to a slower speed

- Tom from Gordon Crane & Hoist came in this morning at 7am and replaced the new West assembly with the original West assembly, which had at that point also been fitted with a rebuild kit at Gordon Crane’s shop

- Tom also inspected the East brake assembly again

- Tom commented that he had issues setting the right gap between the friction plates and the brake rotor – too close and the brake would not release properly, too far and the brake rattle issue would be observed

- He also commented that during this most recent repair of the West brake, he applied never seize to the shaft and spline to ensure that this friction point was not an issue

- After Tom finished his repair and inspection of the brakes, David attempted a test lift of an SEG block (10 ton) at the slowest lift speed

- The rattle noise coming from the West brake was still observed

- Travis also tested the slowest speed in Remote Test mode from the control room, with David and Grant present in the Target Hall, the rattle was also still observed

- Tom advised that the rattle would not affect the safety of the hoist, and no damage would be done to the brake assemblies by running the hoist normally with the rattle noise

- Tom ensured that he would consult with Aiden and they would likely order a brand new West brake assembly from Kone

- Tom called Aiden Gordon to confirm that it was ok to proceed

- Aiden called me around 1:30pm and left a message that the slow speed rattle sound was benign and that we could proceed with normal operations, but he would definitely address the problem moving forward, and we should standby for his report

Photos and video have been uploaded to Docushare.  The hoist noise before the repair and after the repair during the test lifts can be heard in the videos.

https://documents.triumf.ca/docushare/dsweb/View/Collection-19812

Thanks and regards,

Grant

--

Grant Minor, M.A.Sc., P.Eng.

TRIUMF Remote Handling Group Leader

Nuclear Engineer

4004 Wesbrook Mall, Vancouver

BC, Canada, V6T2A3

gminor@triumf.ca

(604) 222-7359

http://www.triumf.ca/profiles/4557

containment box was re-installed onto TM3 on Monday, Left manipulator may be showing signs of eminent handle or tong cable failure.

TM2 was moved and connected in ITW yesterday afternoon. After roughing down, ITW turbo pumps are started. ITW TP4 can not be started to full speed. ISAC ops kept it at low speed mode with less than 1.0A current draw on pump. ITW IG1s shows red as well. I will take a look on them today when beam is off.

the containment box has been removed from TM3.

chad fisher wrote:

A video inspection of the lower service tray was performed this morning. Camera was inserted upwards into the service tray/service chase from the containment box. One potential spark mark was identified as well as epoxy not flush with insulator. Fiberglass does not extend into service tray/chase much and does not look, from initial inspection that it will be too difficult to remove. Video can be found in docushare Document-142295

 The attached picture is from the video: showing the fiber glass inside the Service Tray.

 Installation of the NHC right side manipulator was completed yesterday.  The three piece manipulator was assembled in the module assembly area on the manipulator cart which was then craned through the hatch to the NHC service area (the slave end had to be removed for it to fit through the hatch).  The installation went relatively smoothly except for the second (cold side) piece of lead shielding around the thru tube which would not fit because the OD of the two halves were not concentric when assembled (arrived this way from CRL).  The shielding was removed and 0.070" was cut down on the lathe, after which installation could be completed.  The slave end lift bail and the pulley cover panel had to be removed for the manipulator to fit through the thru-tube.  Both these items were reinstalled after the manipulator was in the wall, and it was confirmed that the slave end lift bail aligns with the slave-end removal hatch in the NHC roof.  There was some difficulty getting the slave end to the horizontal position using the Y motion drive, also while preparing the manipulator for installation we noticed one of the Z motion tapes on the master side was sliding to the edge of one of the pulleys and rubbing - both these issues will be investigated at a later date.

We confirmed that it is possible to remove the master end using the manipulator cart.  We will practice doing this at some point before the cell is commissioned.  We will also do a run-through of slave end removal through the NHC roof.

Electronic copies of the Model-N installation and removal manual as well as the manipulator cart user manual are attached for future reference.