Reports until 16:03, Thursday 19 December 2013
H1 ISC
corey.gray@LIGO.ORG - posted 16:03, Thursday 19 December 2013 - last comment - 10:54, Friday 20 December 2013(9035)
H1 EY TMS Upper Structure Moved

(Andres, Corey, Jeff B, Keita)

Today the TMS Upper Structure was moved from its H2-BSC6 spot to its H1-BSC10 spot.  For the most part it was straightforward, but it should be noted that there are issues with the Alignment Templates (i.e. "cookie cutters") and/or the Overall Drawing (D0902168).

Issue #1:  When we used the called out alignment templates, it was noted that the counterbored holes were not useful, because to match the drawing, we have to flip the Templates over. 

Issue#2:  After we lifted the Upper Mass up to the Cookie Cutter and inspected the position of the Upper Mass, it was apparent we were just under an 1" off!  This was with using the called-out Templates (#23 & 24) at the correct corners.  We ended up switching the template out between corners (i.e. we used a #23 at the location the drawing calls for #24).  This got us much closer to where we wanted to be....not perfect though, we were probably a few millimeters off.

At any rate, the Upper Mass is up & torqued down.

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jeffrey.bartlett@LIGO.ORG - 10:54, Friday 20 December 2013 (9043)
Spoke with systems - They confirmed the cookie cutter reference numbers were reversed on the drawing (D0902168 sheet #2). The cookie cutter #23 was the correct one to use in the A21/B51 by A26/B41 position. Systems has redlined the drawing with the correct placements.