Bill Rawnsley completed an electrical check of the T2 profile monitor today from the Meson Hall mezzanine - All OK.
The T2 cooling package was refilled and started. There was no change to the T2 vacuum when starting the package. While running, the package was visually inspected for water leaks - no leaks found.
The lower air amplifier has also been started and is operating normally (the o-ring seal of the moisture trap on the amplifier inlet required cleaning and lubricating to seal properly).
David Cameron and Mike Russel completed an electrical check of the T2 protect monitor last week - All OK.
On the control panel on the mezzanine the "monitor in" lamp is currently illuminated which is incorrect (the monitor is currently out, and proper actuation of the micro switches was checked). This problem started last year and did not seem to cause issues during 2013 running period.
Operators were unable to move the T2 profile monitor to the in position from the control room. This may be caused by a separate interlock that is not satisfied, or may be a new controls issue. To confirm that the T2 target assembly is not at fault, power was supplied directly to the profile monitor air cylinder solenoid valve and the monitor traveled into position normally. This will be investigated further before blocks are replaced. |