On February 8th the SMP shield box (IRH1675) and the vacuum vessel (IRH1806) were both raised from a horizontal to vertical orientation in the ISAC-1 Experimental Hall.  Hamilton "Mini-Mite" S-MM2-43FS caster wheels were then installed on the base of the shield box and it was lowered down the hatch to the B2 level.  The vacuum vessel was then lowered into the shield box, supported by the rollers, as designed.  The shield box and vessel combination were then moved south along the steel plated floor until positioned under the hatch leading to the Target Hall.  Movement along the floor was achieved by pushing the back of the vessel with an electric fork truck and pulling from the front with a cable winch attached to a plate mounted in the floor in the SHC service area, centered east/west between the Ante Room doors.  The fork truck alone was sufficient to move the assembly on the smooth section of the plates, but the winch was needed on the section paitned with textured grit.  The vacuum vessel was then lifted into the Target Hall and placed in a temporary storage location in the silo area.  The shield box was then lifted, casters removed, and then lifted up into the Target Hall.  It was a very tight fit with the tubing which has been installed on the SHC and NHC ducting for the new flow meters, but the move was completed without causing damage.  The shield box was placed on the B2 level in the Target Hall where some final tapped holes will be added on the exterior before moving to the final installation location.

Dragan Mitrovic, TRIUMF structural engineer, was consulted earlier this week regarding seismic requirements for the SMP assembly.  Installation location, overall dimensions, total weight, and the center of mass for assembly IRH1670 were provided to him by e-mail.  On Feb 20th he communicated verbally that he had analyzed the assembly for seismic loads, and concluded that this equipment does not require anchoring or any other form of seismic restraint.

Update (May 30, 2019): Confirmed with Dragan that the approach he used for analysis was that specified in the BC Building Code (both 2012 edition and updated 2018 edition).

 Last week drilling of the additional required holes in the SMP shield box was completed in the Target Hall.  This morning the shield box (IRH1675) was moved to its final installation position in the silo area on the B2 level.  The vacuum vessel (IRH1806) was then installed inside the shield box.  The center of the vacuum vessel is 2-3" north of the south travel limit of the crane.  Photos as well as measurements of the final position are attached below.

With the SMP vacuum vessel now installed inside the shield box, a test was performed to measure the torque required to rotate the vessel.  At a moment arm distance of 2.0m a force of 89N was required to rotate the vessel (with no module installed) resulting in a torque of 178Nm.  Based on this, the coefficient of rolling resistance (CRR) was calculated to be 0.007;  This is fairly close to available data for similar applications such as cast iron wheels on steel rail (https://en.wikipedia.org/wiki/Rolling_resistance).  The CRR used for design of the SMP drivetrain was 0.054 which was based on empirical data for a similar product.  Because this is significantly higher than the friction of the as-built system the drive-train components are stronger than required and should have no problem rotating the vessel when loaded with a module.

Further details and calculations included in the attached PDF.

The SMP module support flange sub-assembly (IRH1755) was installed today according to drawing IRH1683.  Dow Corning 111 sealing compound was used to keep the o-ring adhered to the lower groove during transportation and installation.  The TCS shield plug (IRH1646) was then installed on the SMP module flange which has vacuum connections for leak checking.  Vacuum was pulled on the SMP vessel using the Varian 979 leak detector.  After approximately 3.5 hours of pumping the test port pressure was at 2.4E-2 Torr and leak rate was 7.9E-8atm*cc/s.  Helium was configured with the regulator set at 10psi and flow rate of >10 bubbles per second in Windex and then applied slowly around the perimeter of the vacuum flange (IRH1686) and it's mating components on both  the top and the bottom.  There was no response on the leak detector indicating the seals on both sides of the module flange are leak tight.

The AC wiring for the SMP motor was inspected by Randy Boehm (TRIUMF electrician) as recommended by Franco Mammarella (TRIUMF electrical engineer).  After inspecting the system Randy required the following changes:

1. AC wiring inside the control panel be increased to 16awg minimum (14awg preferred)
2. Wiring between the control panel and motor control box be increased to 14awg
3. Power cable to the motor be increased to 14awg
4. Current rating for MS connectors be checked and replaced if below 10A
5. Prefer that motor control box components be relocated to the control panel to reduce number of AC wires and connections (preferred but not mandatory)
6. A dedicated ground wire is required in the cable going to the motor (if not already in place)

After these changes have been made the inspection will be repeated.

July 31, 2019 update:

Items 1, 2, 3, and 6 from above were completed.  14awg wiring was used for wiring inside the control panel (Item 1).  Current rating for the MS connectors was checked and is over 10A (Item 4).  Motor control box components were not relocated to the control panel at this time (Item 5).

Randy repeated his inspection today, and approved of the updated 120V wiring.

Adam updated the SMP electrical and control schematics (IRH1868-1874)

 July 3:

 The SMP vacuum control system has been wired and setup to be controlled from EPICS.  Backing valve control (SMP:BV1) was tested by connecting to the turbo pump solenoid on TM3 located in the silo directly north of the SMP.  The SMP pump (SMP:MP1) was turned on and off through the EPICS interface and responded as expected.  Both convectron gauges (SMP:CG1 and SMP:CG2) responded as expected when the pump was turned on.  The readings from the two gauges were consistent throughout the mili-Torr range.

The work was done by Ray Mendoza under WP I2019-07-24-4 (work request #5239).

 Installation of the video lines for the SMP cameras was completed yesterday according to IRH1670 Rev B.  All four cameras were confirmed to be displaying properly in the crane control room.  The cameras are powered from an outlet wired to circuit 35/37 on Panel #443 (located in the NHCSA).  This is independent from the power supply for other existing camera systems in the Target Hall.  The SMP turntable was rotated through the full range of motion (reached CW and CCW limits) and the cable routing and reel take-up system performed as expected.

The SMP vacuum vessel welds were reinforced to match the specifications on IRH1710 Rev D.  In addition a tube stub was added on the side of the vessel for installation of a PRV.  The relief valve installed was Accu-Glass 113150, with 2psi setpoint (not the MDC 420036 model specified on IRH1710 Rev D).  The drawing will be updated to reflect this.

Welding was performed in the TRIUMF machine shop.  A larger capacity forklift was rented to move the vessel back and forth between the shop and the Meson Hall loading bay where the main crane was used to flip the vessel between welds.

After welding the vessel was leak checked using a blank-off plate (helium leak tight).  The vessel was then returned to the Target Hall, the top flange IRH1755 was re-installed, and the TCS shield plug was installed on the flange.  The vessel was pumped down over the weekend using the SMP vacuum pump, and reached 8mTorr by Monday morning.  A helium leak check was performed in the Target Hall:  baseline leak rate 0.0E-9 atm-cc/sec, 0.0E-4Torr port pressure, no response to generous helium spray on PRV and around both seal locations for the top flange.

Remaining re-assembly of the SMP will now proceed.

 As a preliminary test in preparation for SMP commissioning, one of the steel module shield plugs was installed into the SMP to check the positional and rotational alignment procedures.  The following is a summary of the steps performed:

1. Shield plug lifted with crane and rotated to an arbitrary (non-orthogonal) position
2. Using the crane pendant the shield plug was roughly aligned over the SMP and lowered until the base was within 15cm of the top of the flange
3. The SMP flange was rotated to roughly match the orientation of the shield plug 
4. Precise positioning of module achieved visually from within the Target Hall using crane for NESW position and SMP for rotation
5. Module lowered into SMP vessel (not resting on base of vessel)
6. Target Hall crane was then set to "Test Mode" and operated from the crane control room
7. Crane position with the module centered in the SMP vessel was recorded as E-W: 18.5495m,  N-S: 4.9065m
8. The shield plug was lifted from the SMP, moved to an arbitrary location in the Target Hall, and set to a different arbitrary rotational position
9. The SMP flange was returned to the "centered" position
10. The shield plug was moved to the previously recorded location over the SMP and lowered to within 15cm of the top of the flange (using cameras)
11. Steps 3-5 were repeated using only camera views to achieve alignment (SMP rotation was controlled using the pendant with instructions by phone from the crane room operator because the module for remote control currently requires a part to be changed)

Official commissioning of the SMP will now be planned as per the commissioning plan Document-170404

A braided grounding strap was attached to the aluminum gear box support on the SMP shield box structure, and grounded by attaching it to the exterior of an electrical conduit located in the south-west corner of the B2 area at the top of the silo in that corner.  The braiding was also connected to the stainless steel support structure for the SMP vacuum pump.

The attenuation of the SMP shielding was measured as part of SMP commissioning (Document-170404, R1, Section 4, Test #8)

The field on the shutter side of TM3 was measured without any shielding as it was removed from a storage silo.  At 0.5m from the edge of the module the maximum field was 5.00mSv.  After installation into the SMP the maximum field outside the SMP shielding at 0.5m from the edge of the module was found to be 27uSv/hr. The resulting attenuation is 185x

Expected attenuation was calculated by Joe Mildenberger assuming that the majority of the activated components in that module are either copper or aluminum.  With 6" of steel shielding (SMP shield vessel plus vacuum vessel), the attenuation factors were found for the following isotopes: 

Na-22 (created in Al): 115

Co-60 (created in steel (Fe) or Cu): 70

Mn-54: (created in steel (Fe) or Cu): 200

The SMP assembly was shifted approximately 1.0" north today by pushing it, braced against the south wall, using a 100 Ton capacity air lifting bag supplied by Beamlines Group.  The move was one of the action items identified at the Gate 4A/4B close-out review.  During commissioning of the SMP, TM3 was installed into the vacuum vessel, which required the crane to be all the way at its south limit, so the move is to provide some margin for future use, particularly if TM1 is put in the SMP as the extent of its shielding is slightly larger than the other modules.

One of the air fittings for the lid actuation cylinder on the north side was damaged during the move.  It was replaced and correct functionality of lid actuation was then confirmed.

 The North Hot Cell gas delivery lines (labeled 1, 2, and 3 on the hot and cold side panels) were leak checked today.  5psi helium gas was applied to each line in turn with the appropriate solenoid valve opened and a Staubli connector with plastic tubing and the leak check wand attached to the matching connector inside the cell.  The end of the wand was sealed using tape.  The Agilent G8601 leak detector was used on "sniffing" mode to check for escape of helium gas from all joints and connectors.  With the sniffing line attached the leak detector test port pressure was 3.9E-1 Torr and the baseline leak rate was 1.7E-6 Torr*L/s.  There was no response while testing all of the three lines.  For all three there was a leak detector response after disconnecting the Staubli fitting, which confirmed that the lines were properly charged with helium.

In mid-2020 design analysis was completed on the steel plate & pin assemblies (ITA6550) used to connect the ISAC target hall crane hook block to the module lifting yoke assembly ITA0494.  The released design note is Document-184431.  

In November 2020 fabrication was completed on two full plate & pin assemblies (photos attached below).  As per the relevant ASME standards (identified in the design note), each assembly has been identified with serial numbers (#1 and #2).  Material test reports for the steel plate and round bar material used for fabrication are attached in PDF format.  For both materials the tested tensile yield strength (from the MTR) exceeds the value used in design calculations (from Document-184431):  117ksi vs 100ksi for the plate material;  138si vs 103ksi for the round bar material.

On February 8, 2021 both plate and pin assemblies were load tested by David Wang and Frank Song.  The total load applied to each was 31,400 lbs (as per the ISAC target hall crane load cell) which exceeds the 125% of rated capacity (31,250 lbs) required for the test.  The lifts were conducted successfully and no deformations or other damage to the assemblies were observed.  Photos of the load test are also attached.

Both plate & pin assemblies are now certified for use up to their rated capacity.  As specified on drawing ITA6550 and in Document-184431, a monthly visual inspection must be performed to check for structural deformation, cracks, excessive wear, and loose or missing fasteners.  In addition, an annual inspection must be performed to check for structural deformation, cracks, excessive wear, loose or missing fasteners, and missing or illegible markings or safety labels.  A written record of the annual inspection must be documented and kept readily available.

Hi Remote Handling,

The guage on the IMC circuit in the Target Hall is reading atmosphere, and the bellows is currently relaxed (i.e. expanded), whereas it should be reading about -20inHg and the bellows should be contracted (i.e. compressed).

I've attached a photo of what the guage and fittings should look like when pumped down to -30inHg.

Either the IMC circuit has been vented, disturbed, or it has some kind of leak.  When I was in the Target Hall this morning, I saw the gauge bent around the railing at an awkward angle with a pretty severe bend in the copper line, it appeared to have been disturbed by the temporary glove box sitting at that level used by Rob Walker for nuclear ventilation work.

I will co-ordinate pump-down and leak check of the circuit, but the Conditioning Station cannot be used until this is repaired.

Cheers,

Grant

(Copy of e-mail correspondence sent June 20th 2012)

After some discussions this morning I’ve decided on the following best path forward for TM3 at the Hot Cell leading up to the Canada Day long weekend.

General Goals:

-          Blank-off TM3 water line terminations (coil, heat shield, water-cooled window)

-          Test sliding tray removal tool to determine fit on TM3 chassis

We will skip the Conditioning Station leak tests and return TM3 directly to a silo for the following reasons:

-          We will have a visitor next week and this will impact Chad’s time available to do Hot Cell work

-          Helium pressure leak checks on the blanked-off circuits are only one small portion of a large set of diagnostic tests (leak, electrical, HV, etc.) that must ultimately be performed on TM3 to determine its fitness. This full set of tests must be carefully documented in a procedure and executed systematically when there is adequate time at the CS to do all of them, with results recorded.  There is currently not adequate time for this work between now and Canada Day.

-          If we were to detect a leak from one of these tests, it would not tell us anything about where the leak is in that given circuit (there are multiple possible points).  The service cap would have to be opened regardless, which we don’t have time for.

-          The aforementioned bullets above lead me to conclude that the extra work required for two module moves for one set of partial leak checks is not a value-added exercise: In other words, the module will have to go back to the CS, regardless of what we do over the next week for more tests.  The time savings of trying to squeeze it in next week are really negligible and it makes for a tight schedule for not much benefit.

Chad:  Please prepare a detailed work plan for your hot cell jobs including a list of the tools required and what leak checks you will do specifically after you have installed the blank-offs.  You may refer to existing procedures if you already have these written.  I would like to review this plan and I am expecting that an e-log will be filed daily and this work plan should be referred to as an attachment.

Proposed Schedule Jun 20 to 29

Wednesday Jun 20 (1 working day)

-          Setup for TM3 move from Silo to HC (Travis, David)

Thursday Jun 21 (1 working day)

-          TM3 moved from silo to HC (Travis, Don Dale, David)

Friday Jun 22 to Wednesday Jun 27 (4 working days)

-          Chad performs the following HC work on TM3:

·         Removes containment box

·         Installs water-line blank-offs

·         Checks Sliding Tray Removal Tool Fit

-          Vacuum leak checks of blanked-off lines at the HC (Chad, David, VG)

-          Chad buttons up TM3

-          In parallel - David performs block moves as required

Thursday Jun 28 (1 working day)

-          TM3 moved from HC to Silo (Travis, Don Dale, David)

Friday Jun 29 (1 working day)

-          Contingency

RH Group: Please move ahead with the work as outlined above.  Please comment if you have any concerns or proposed changes to this plan.  Thanks very much to all for your assistance,

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

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

Today (Wednesday July 18th) at around 4:15 pm I was taking a small tour group from VECC into the Target Hall. In the process of discussing the mechanical design of the Target Modules and South Hot Cell turntable I inadvertently lifted the Aluminum Hatch Cover of the Hot Cell about 2 inches in an effort to explain something. This tripped the ventilation alarm before I realized what I was doing. I evacuated the visitors from the Target Hall, checked booties and gloves at the check station before having the visitors step over the boot box. I called operations and let them know what I had done. The Target Hall was locked out and is awaiting a survey for the morning of July 19th before work can proceed.

Today (Wednesday July 18th) at around 4:15 pm I was taking a small tour group from VECC into the Target Hall. In the process of discussing the mechanical design of the Target Modules and South Hot Cell turntable I inadvertently lifted the Aluminum Hatch Cover of the Hot Cell about 2 inches in an effort to explain something. This tripped the ventilation alarm before I realized what I was doing. I evacuated the visitors from the Target Hall, checked booties and gloves at the check station before having the visitors step over the boot box. I called operations and let them know what I had done. The Target Hall was locked out and is awaiting a survey for the morning of July 19th before work can proceed.