I'll go ahead and do an impromptu site inspection while I'm here.  I expect to be here between 60- 90 minutes.

I will make a comment to this log entry when I leave

Starting around 6pm Friday 29th PST we are seeing auth problems when accessing the internal CDS web pages using the standard LIGO authentication option. The work around is: when you get the web page with the LIGO logos, if you select the LHO Backup option you should be able to view the web pages.

Both Beckhoff end station slow controls systems are having problems. h1ecaty1 continues to run but not allow connections to the DAQ-EDCU nor the hourly autoburt. h1ecatx1 froze up on Christmas Eve (23:37 PST). Both require IOC restarts.

No other problems have been found.

The site is secure. The entire site is covered in ice and showing no signs of melting as of this moment. Let's hope the weather man is correct about the warmer temps tomorrow. All buildings checked.

IP 1,2,3 are being pumped via aux carts (valved out now). IP4 valve dead space was pumped out with loaner "cube" cart. GV5 annulus is set up to pump next week.

HAM 1 is on turbo powered through safety GFCI in case of a power failure.

All three turbos are valved into main volume and backed by local scrolls. QDP80s are OFF; water valved out.

Attempted to start leak checking but leak detector was not budging below 1.1e-8 Torr-L/s background. Postponing till next week.

Mark & Tyler worked on TMDS tables.

Dick G. was onsite for a while in the EE lab.

John Deer tech was on site for a while working on big green machine. 

No issues to report.

Corner pressure is 1e-5 Torr this morning with two turbos valved in (pressures at turbos:  3.8e-6 & 2.8e-6 Torr). XBM turbo is humming along at 4.9e-9 Torr; will valve in after leak checking today.

This afternoon Kyle and I valved in OMC turbo and YMB turbo. The XBM turbo is spun up but valved out and backed by its scroll. Kyle will lower pressure set points before he leaves today. Corner pressure is 10 mTorr.

HAM 1 turbo was valved in for a second but the power cord needs to be secured better so it was spun back down; will resume tomorrow. PT-100B CC gauge tripped and has been reset. Chamber pressure is 0.1 mTorr.

Aux turbo cart was moved from BSC 3 annulus to BSC 2 annulus. 

Tyler and Mark are working on building three more TMDS tables.

I topped off the top PSL chiller with 150 mL of distilled water. The bottom chiller indicated OK status so I did not add any water to it. 

[Bubba, Chandra]

Site check complete. Bubba found the MPR door ajar this morning which is my fault. While I checked that it was latched when I locked it yesterday, I didn't tug on it when I left last night. A good reminder that when exiting through that door at night pull on it to make sure it latches all the way.

Found CP7 Dewar head pressure a bit high:  25 psig

No leaks and no weird smells except for some expired meat balls in the OSB kitchen fridge.

I cleared off the X/Y 2-8 solar panels.

PT120A: 280 Torr

PT100A: 308 Torr