kyle.ryan@LIGO.ORG - posted 08:06, Tuesday 07 April 2020 - last comment - 17:07, Tuesday 07 April 2020(55879)
Kyle on site working in Mechanical Room
Chandra R., is my "buddy" and I am keeping her abrest of my comings and goings. Mostly I'll be tinkering with the new HEPTA pump installation in the Mechanical Room. I plan on staying until 4ish and will make a log entry when I leave.
Comments related to this report
kyle.ryan@LIGO.ORG - 17:07, Tuesday 07 April 2020 (55883)
Today, I terminated the panel-end wiring for the SEAL PURGE SOLENOID VALVE, SEAL PURGE FLOW SWITCH and PUMP TEMPERATURE SWITCH for the VERTEX+YBM HEPTA pump. What should have taken 1 hr. ended up taking much of the day as I had to hunt down an intermittent connection burried deep in the control panel that revealed itself during testing - "ugh!" With the solenoid valve now working (supplies seal purge flow to rear the shaft seals), I was able to verify that the resulting increase in flow demand did not starve-out the lesser flow supplying the front-end shaft seal purge which branches from the supply prior to the solenoid valve - good! This pump still has a pre-production HEPTA INTAKE ADAPTER FLANGE that will likely get replaced even though it is working (specially because it is working! - its a Kyle thing). Left to do is to hook up the bottled N2 and to terminate the panel-end wires for the "air-to-open, spring-to-close" gate valve at the HEPTA intake and then to do full testing via the Turbo Control Panel.
At Cheryl V.'s request, I muted the Team Speak microphone in the control room. At Richard M.'s request, I de-energized the (blue-faced, unlabeled) 18VDC and +/- 430VDC ESD power supplies at EX.
Neither of the two NORCO drivers had phoned me this morning to notify me of their on-site presence. Luckily, Scott L. noticed the first driver and opened the gate. I had to, then, stare out of the window for 30 minutes in anticipation of the 2nd truck.
Today, I terminated the panel-end wiring for the SEAL PURGE SOLENOID VALVE, SEAL PURGE FLOW SWITCH and PUMP TEMPERATURE SWITCH for the VERTEX+YBM HEPTA pump. What should have taken 1 hr. ended up taking much of the day as I had to hunt down an intermittent connection burried deep in the control panel that revealed itself during testing - "ugh!" With the solenoid valve now working (supplies seal purge flow to rear the shaft seals), I was able to verify that the resulting increase in flow demand did not starve-out the lesser flow supplying the front-end shaft seal purge which branches from the supply prior to the solenoid valve - good! This pump still has a pre-production HEPTA INTAKE ADAPTER FLANGE that will likely get replaced even though it is working (specially because it is working! - its a Kyle thing). Left to do is to hook up the bottled N2 and to terminate the panel-end wires for the "air-to-open, spring-to-close" gate valve at the HEPTA intake and then to do full testing via the Turbo Control Panel.
At Cheryl V.'s request, I muted the Team Speak microphone in the control room. At Richard M.'s request, I de-energized the (blue-faced, unlabeled) 18VDC and +/- 430VDC ESD power supplies at EX.
Neither of the two NORCO drivers had phoned me this morning to notify me of their on-site presence. Luckily, Scott L. noticed the first driver and opened the gate. I had to, then, stare out of the window for 30 minutes in anticipation of the 2nd truck.
1708 hrs. local -> Leaving site now.