|Electrical conduit and breaker panel board installation at ground level and on the MicroBooNE work platform level is nearing completion. Photo: Dixon Bogert, PPD|
Whittaker Construction Company, contracted to construct the Liquid-Argon Test Facility, and their electrical subcontractor, Frank Marshall Electric, have nearly completed the installation of electrical conduits and circuit breaker panel boards. In the upper portion of the above picture, one can see panels and conduits at an elevation of 746 feet, which is ground level. The platform in the bottom of the picture is at an elevation of 733 feet and will provide access to the top of the MicroBooNE liquid-argon cryostat. This level will be the location of some of the experiment’s front-end electronics. Wiring in the conduits and termination at the breakers and receptacle boxes, lighting fixtures, and HVAC equipment will begin shortly. Once the wiring is complete, building systems commissioning can begin.
In the picture below, one can see the underside frame of the work platform (at elevation 733 feet) above the LArTF cylinder floor, which is at elevation 706 feet. This includes the lower “balconies” for access to the MicroBooNE cryostat electrical feed-through ports. At the pit floor level, the MicroBooNE experiment will install the refrigeration plant, which will cool the liquid argon. The large vertical pipe for the emergency exhaust of argon in the event of a leak is seen in the center back of the picture.
|Electrical conduit and breaker panel board installation at the pit floor level under the MicroBooNE work platform is also nearing completion. Photo: Dixon Bogert, PPD|