The Glassman gun HVPS interlock chain chassis has an SF6 pressure interlock which is connected to an electronic sensor pressure gauge in the HVPS SF6 tank in the UITF vault. This electronic pressure sensor has a low limit set point, which was set to 50 psig. Because the HVPS tank has a very small leak, the pressure has been dropping slowly over months and today it reached 50.1 psig which triggered the buzzing alarm.
After cooling Puck #9 SLSP-5756-4 to 29 C during the day shift activated with Cs (4.5A) and NF3 (+5-10 nA) using 773nm diode, 5 mm mask and bias=5. Turn on came a little early ~15 min, completed 15 yo-yo's w/ adjustments to add ND filter and finished on ~1 uA FS.
Stripchart was mis-behaving, so a very touch-feely activation through first 5 yo-yo's, need to address that, maybe picoammeter, bias seemed okay but worth a look.
All the magnets cable for IN02B11 trim rack has been verified
by ohm in out the cables at the junction box and at the magnet
connection leads. All of the IN02B11 magnets are hookup at
the magnets terminal strips.
We will continue with IN02B10 trim rack tomorrow.
Diggs, Kissinger, Richardson
IHA0I02 - control cables terminated at rack IN03B07 and IN01B03. Anti-collision circuit cables terminated at device location. Cross connect jumpers configured in rack IN03B07. Still need to reconfigure the cross connect jumpers in rack IN01B03. We plan on testing the interlock / anti-collision circuit tomorrow morning.