The T2 Protect Monitor was transported from the beam line to the hot cell this morning using the transport flask. The move went smoothly. The only difficulty was locating the yellow flask alignment frame to the T2 monolith as the T2 protect holes on the yellow frame are tighter than for other devices. It was necessary to remove four screws that secure the top flange of the T2 protect monitor assembly to the flange on the monolith. These screws are stored on the top of the monolith in a labelled bag. The T2 protect o-ring was in good condition, but was replaced anyways, and a blank-off was installed over the hole so that vacuum can be pulled on the T2 volume. A maximum field of 15mSv/hr was measured at 0.5m from the monitor while lifting.
Probes Group may now begin testing / repair of the monitor. Bill Rawnsley has been notified.
Photos attached.
Update (March 19, 2014): Bill Rawnsley thinks that the damage was caused by mis-steered beam (not from water). He points to the evidence of heating in the attached photo. |