Testing was performed on August 9th on the ISAC nuclear ventilation system to determine if the existing ventilation system can achieve the required cell depressions for both SHC and NHC under all expected configurations and if a proposed modification to the DDC control system can provide acceptable stability and response time for the system.  The proposed control system observes the lower of the SHC depression or the NHC depression + 10% (to avoid stability issues), and adjusts the dampers to try to achieve 250Pa (1.00" WC) depression in the area it is observing.  With the proposed control system the SHC and NHC dampers are programmed to be at the same position, but can be tuned with a bias between them if required to achieve all ventilation requirements. The NHC and SHC dampers are programmed with a limit at 90% of the fully-open position.  There is a damper in the ducting system in the section of duct after the SHC and NHC legs join together;  this is set at 50% open, and was not adjusted during the the tests.  Test summary and results are listed below:

1.  Prior to switching to SHC+NHC control mode, the flow rate and depression of the SHC was measured with the lid on:  266Pa cell depression, damper 47% open, duct flow 417cfm.  The lid was opened and the measurements repeated:  35Pa, damper 90% open, duct flow 630cfm (results in 83ft/min, 0.42m/s average flow velocity across HC module opening)

2. The control system was switched to the new SHC+NHC single control loop system. Measurements were taken with both hot cell lids closed.  SHC:  246Pa, damper 72% open, 350cfm flow rate.  NHC: 257Pa, damper 72% open, 510cfm flow rate.  The ventilation fan speed was then increased from 53Hz to 57Hz (maximum speed is 60Hz).  Measurements were taken with both hot cell lids closed.  SHC:  257Pa, damper 51% open, 353cfm flow rate.  NHC: 257Pa, damper 51% open, 515cfm flow rate.

3. The SHC module port lid was opened and the NHC lid left closed.  SHC: 37Pa, damper 90% open, 462cfm (results in 61ft/min, 0.31m/s average flow velocity across HC module opening).  NHC: 249Pa, damper 90% open, 551cfm.

4. The NHC module port lid was opened and the SHC lid closed.  SHC: 203Pa, damper 90%, 360cfm.  NHC: 33Pa, damper 90%, 648cfm (results in 85ft/min, 0.44m/s average flow velocity across HC module opening).  The fan speed was then increased to 60Hz (max speed) to see if the depression setpoint for the SHC could be achieved in this configuration.  SHC: 231Pa, damper 90%, 389cfm.  NHC: 29Pa, damper 90%, 705cfm (results in 93ft/min, 0.47m/s average flow velocity across HC module opening)

5. Both SHC and NHC module port lids were opened and the fan was left at 60Hz.  SHC: 31Pa, damper 90%, 448cfm (results in 59ft/min, 0.30m/s average flow velocity across HC module opening).  NHC: 29Pa, 90% damper, 669cfm (results in 88ft/min, 0.45m/s average flow velocity across HC module opening)

For all tests the control system arrived at a stable depression value in less than 5 minutes, and thereafter exhibited only minor fluctuations.

Notes:

Duct flow rate was calculated assuming that measured flow velocity at the center of the duct is 90% of average duct velocity.  The duct ID at the sample location is 7.75", the hot cell opening size used for SHC and NHC module opening flow velocity calculations was 33" x 33".

Duct flow velocity measurements were taken using a thermal anemometer (Model number: 9555-P, Serial number: 9555:1108059 Rev. 2.11.0, Last calibrated by Rob Walker on April 29, 2016).

After completion of the tests the system was restored to it's original configuration and the ISAC target hall was swiped for contamination: none found.  No EF12 trips occurred during these tests.

Black "radio active" materials cabinet has been emptied, items bagged and removed from the anteroom. Cabinet itself has been swiped inside and out and also been removed from the anteroom. Most items have been removed from the anteroom now save some cardboard, rolls of plastic etc.

Dan and I connected TM4 in ITE yesterday. It is pumping down at ITE now. Everything is fine so far.

TM#3 has been moved from the north east silo to the conditioning station.

 The locations (ports) for the RGA and CG1S was swapped today by Anders and Isaac to provide clearance for the North Hot Cell ventilation. Attached photos show old and new locations.

TM#4 with UC#17 is now in the east target station.

I stopped TCS water pumps this morning . The argon venting for TCS is in processing.

The wave guide from TM3 has been surveyed, swiped and removed from the anteroom and transported to rad waste for disposal. The wave guide has been stored in the anteroom since its removal.

A hole was drilled in the NHC exhaust duct in the east end of the target hall above the hatch to the Ante Room.  This will be used for measuring NHC exhaust flow rate with a thermal anemometer.  The hole was tapped and plugged with an NPT tap.

Flow was measured in the existing hole in the SHC exhaust duct in approximately the same location.  Flow velocity was measured to be 1415 ft/min with the lid on the SHC.  Using duct ID 7.75", and assuming the average flow velocity is 90% of the flow at duct center, the flow rate was found to be 417cfm.  We will attempt to match this figure for the NHC when the ventilation tests are performed.  The tests have been scheduled for the maintenance day on Tuesday August 9th.

The anemometer probe and SHC test port plug were checked for contamination: none found.

Some items have been removed from the anteroom in preparation for painting. Items have been placed on plastic in the south hot cell service area. No contamination found so far.

The spent UC #16 have been moved from the south hot cell to the storage vault see attached PDF for details.

The result of yesterdays electrical check on TM#4 with UC#17.

Update schedule weekly. See attachments 1,2

I started TCS water system and installed HV cover onto TM4.  The TM4 containment box is supplied with water also. TM4 is ready for conditioning at TCS.

Helium pressure test on TM4 HS line at TCS  is done.Leak detector 0.0X E-9atm.cc/sec.  5minutes, 70psi helium.    No response on LD.

East manipulator on the south hot cell is showing signs of eminent wrist/tong cable failure. Some slight slippage was noted yesterday and confirmed by a snapping sound and more slippage tomorrow.

Wednesday, August 03, 2016, 08:08: RGA on

Wednesday, August 03, 2016, 11:25: Configured EE to be connected to EE PS (not grounded)

Wednesday, August 03, 2016, 11:25: PS on

Wednesday, August 03, 2016, 11:32: BIAS / EL / EE to 20 / 10 / 1 kV

Ramping set to 40 / 20 A at 1 / 0.5 A/min. Good / bad vacuum at 2.0 / 2.2 E-6 T (IG2). Vacuum too high.

Wednesday, August 03, 2016, 13:02: BIAS / EL / EE to 30 / 15 / 1.5 kV

Wednesday, August 03, 2016, 15:59: BIAS / EL / EE to 35 / 17.5 / 1.5 kV. Some conditioning from 30 kV

Chiller staging stopped working around midnight. TGHT and TBHT ramped down by ISAC operators.

Thursday, August 04, 2016, 08:14: Ramping target to 50 / 25 A

Thursday, August 04, 2016, 08:22: Cycled power on chiller to reset alarm. Repeated again 5 min later

Thursday, August 04, 2016, 08:37: BIAS / EL / EE to 30 / 15 / 1.5 kV

Thursday, August 04, 2016, 09:36: Continue ramping to 100 / 50 A

Thursday, August 04, 2016, 11:32: Continue ramping to 120 / 60 A

Thursday, August 04, 2016, 14:50: ramping down

Friday, August 05, 2016, 07:09: Started cooling system

Friday, August 05, 2016, 07:56: Started ramping to 100 / 50 A

Friday, August 05, 2016, 14:27: TGHT / TBHT at 253 / 126 A.

Friday, August 05, 2016, 14:30: Ramping down at 2 / 1 A/min

Friday, August 05, 2016, 15:27: BIAS / EL / EE off

Monday, August 08, 2016, 08:15: Continue ramping. : BIAS / EL / EE to 30 / 15 / 1.5 kV

Monday, August 08, 2016, 14:36 TGHT / TBHT at 260 / 130 A. Ramping down at 2 / 1 A/min

Monday, August 08, 2016, 15:30: BIAS / EL off. EE remains at 1 kV.

Monday, August 08, 2016, 22:56: RGA off. Water system fault. Running CP1 manually

Monday, August 08, 2016, 22:57: EE off.

Monday, August 08, 2016, 22:58: Vacuum off

It is being pumped now at TCS.

TM#4 with UC#17 is now in the conditioning station.

UCx#16 has been removed from TM$ and UCx#17 installed, high current conductors toqued to 130 in lbs.

UCx#16 did not show the standard arcing marks on the 9 pin connector.

In regards to the 9 pin connector on number 17, it was by far the best fitting TM4 target with 9 pin as it required no "fiddling" during installation.