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 wiring for the SMP remote control module was inspected by Joel Semilla (TRIUMF electrician). The module was plugged in to verify there were no issues. No changes were suggested, and then wiring was approved.

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.

An update was made for the E-stop and power supply system in the SMP main panel. Upon testing remote control, it was determined that the Opto 22 AC module was not sufficiently rated to handle the current draw of the motor (5A fuse versus motor 5.7A current draw). The design was modified so that the E-stop chain, which supplies 120 VAC line voltage through the main panel E-stop then the remote module (or local pendant when plugged in), will now activate a relay rather than run directly to the motor and 24 VDC PSU. This means that this E-stop chain will not carry the current draw of the entire system. Rather, the relay that is toggled when the E-stop circuit is closed will supply the system with power - this relay is rated for 15 A so the main 10 A fuse will blow before the relay fails in the event of a current spike. The new relay was installed on Oct 9, 2019. The local pendant was tested at this time and worked as expected (motion control, E-stops). On Oct 10, 2019, remote control was tested again and is working as expected (motion control, E-stops). In the attached schematic screenshot, the modification is CR7. In the image of the panel, this relay is located in the top left.

Edit: TRIUMF electrician Joel Semilla has seen the design change and verified it is acceptable.

 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.

TM3 was moved into SMP Oct 25 morning.  After two nights pumping down, SMP CG1 read 30mtorr this morning.  The pump is stopped. SMP will be vented soon for TM3 moving back to silo. 

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 main control panel and remote control module were updated in order to implement the following items which were deemed desirable during commissioning:
 

•     24 VDC line added to E-stop circuit:
  
  Previously the E-stop relay cut power to only 120 VAC. This means that the lid rotation motor would stop instantly, but since the lid open/close valve is powered by 24 VDC which comes from a power supply unit, there would be a short delay while the unit powers off in which the valve was still active. This could result in a situation in which, for example, someone is operating the pendant to close the lid and another person recognizes a hazard and presses the E-stop on the main panel, but the lid does not stop closing for approximately 3 seconds while the operator is still holding the "close" button down.
  
  To rectify this issue, the 24 VDC line was routed through a NO contact of the same E-stop relay that controls the entire 120 VAC supply to the system. This was tested on Oct. 25, 2019 - working.
  
   
• Status feedback signals to remote control room:
  
  Previously status signals for "Lid raised", "Lid Centred", "CW Limit", and "CCW Limit" were only displayed as light indicators on the main control panel. It was determined during remote operation that it would be helpful to have these signals sent back to the software interface so that an operator does not need to use a camera to look at the light indicators.
  
  
  Electrical drawings and cable schedule have been updated to reflect these changes. The SMP will be tested again using the commissioning plan checklist to confirm no there were no inadvertent effects on the rest of the same from these changes.

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.

 TM#2 with SiC#39 has been moved from the east station to the smp.

TM2 in SMP with old SiC #39 target on it. SMP vacuum pump is started.

Frank and I removed TM2 from SMP to SHC. The move is successful.

Sorted and packed one 55 gallon drum with low contamination and active stuffs which are placed around silo area in the past. They include old poly water cooling lines replaced from ITE, ITW and TCS, contaminated paper  rags , gloves, and plastic bags,air cooling fans for turbo pumps, EE resistor packaged used on module top before, flow meters and cables used in ITW, etc. After packing, The field outside the drum on contact is less than 10 usv/hr.

Dan and I did the SMP annual  maintenance service today. Lid open/close , vessel rotation and limit switch check, lubricate chains, tighten fasteners, and visual inspection.  Everything works fine.

An electrical systems check was performed on the SMP by Adam Newsome and Travis Cave. Overall, there were no issues to note. The following is a summary of the inspection (Work Permit I2020-07-16-1):

- Checked condition of wiring for physical/radiation/UV damage
- Checked for cable tray debris or damage
- Checked inside control panel: components and wiring, labeling
- Verified camera views
- Checked connectors for damage
- Checked pendant for damage and verified labeling intact
- Checked limit switch wiring and condition

 TM#2 with Nb#9 was moved from ITW to SHC and then with no target it was moved from the SHC to the SMP.

 TM2 at SMP under vacuum. TM4 at silo.  Frank and I did the tests. Everything is fine on TM4 check.  On TM2,  all mega test at 500V are around 200K ohms which is so abnormal. We will move TM2 to TCS and  start investigation there.

An annual electrical and mechanical inspection was performed on the SMP today by Adam Newsome, Dan McDonald, and Jason Zhang as per Work Permit I2021-07-07-3. The following items were checked:

• Check condition of wiring for physical/radiation/UV damage
  • OK, no signs of significant damage
• Check for cable tray debris or damage
  • There were multiple shards of plastic in the cable tray - they were removed and disposed of
• Check inside control panel: components and wiring, labeling
  • Labeling intact, components in good condition
  • One COM wire for the relay array was loose - it was tightened
• Verify camera views
  • This was not inspected but has recently been checked, and is checked prior to remote operation
• Check connectors for damage
  • All connectors OK
• Check pendant for damage and verify labeling intact
  • Pendant OK
• Lid open/close test
  • Lid was opened and close multiple times - smooth operation, no concern
  • Lid close logic was checked - OK
• Vessel rotation and limit switch check
  • Both CW and CCW limits were checked, functioning
  • No concern on rotation - chain drive, rotary limit switch, and cable reel all functioning normally
• Lubricate chains
  • Done
• Inspect tensioners
  • Done - OK
• Tighten fasteners
  • Done - OK
  • Note: some concern over socket head screws in slotted parts - they should have washers. Not a critical issue but worth checking into.
• Visual inspection
  • All OK

Overall the inspection was successful.