Chamber 1 Initial Occupancy Scenerio Discussions T. Lundin 18 - PowerPoint PPT Presentation

LBNF Long-Baseline Neutrino Facility Chamber 1 – Initial Occupancy Scenerio Discussions T. Lundin 18 December 2017

Agenda • Dimensions including tolerances • Details of the walls, floors, doors • Occupancy Scenarios • Availability of access from the chamber floor • Utilities that CF will have in place upon initial occupancy • Requirements update (this requires further discussion today) • Items being addressed as “host laboratory” responsibilities • Items already addressed and implemented • Items needing more work 2 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

Dimensions including Tolerances Current dimensions based on Arup’s 100% preliminary design drawings posted in DocDb 136. At the November final design kick-off meeting with Arup we discussed things that have changed (and may change) and will require modifications to the design 3 12.18.17 LBNF T. Lundin December 18, 2017 Interface Meeting

Dimensions including Tolerances The 100% preliminary design drawings include a specific number (or address) for each underground space 4 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

Dimensions including Tolerances Each space has defined excavated minimum dimensions in english and metric units. Overbreak of up to 1-foot is anticipated WWF and shotcrete is being replaced with non- metallic fiber shotcrete on all walls below the 4850L Dimensions shown are to the inner face of the shotcrete. Excavated dimensions will be specified as being + “x” inches, minus zero 5 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

Dimensions including Tolerances Note minimum and Arups dimensions tie to the clearance maximum dimensions for items within the excavation envelope drawing F10043159 6 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

Preliminary Design Details of Wall and Floor Finishes WWF and shotcrete is being replaced with non-metallic fiber shotcrete on all walls below the 4850L. It will be a “rough” finish – no hand troweling Floor tolerances will be +/- 3/8 inch. This means that that maximum point deviation from the assumed datum or elevation is +/- 3/8 inch and the maximum stacked or cumulative deviation is also +/- 3/8 inch. Need floor loading to be defined. 7 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

Details of Doors Technical specifications for doors have not yet been drafted 8 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

Details of Doors Technical specifications for doors have not yet been drafted 9 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

Before We Talk about Occupancy Scenarios Recognize that there are two types of drifts Access drifts with a floor elevation at the 4850L , and mucking drifts below the 4850L for removing excavated material and construction air exhaust pathways 10 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

4850L Access Drifts 11 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

Mucking Drifts Below the 4850L We are currently not planning to have any temporary or permanent utilities in the mucking drifts 12 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

Chambers 1 and 2 – Initial Occupancy Scenario Initial turn-over of underground spaces to science includes chambers 1 and 2, the CUC, and some drifts 13 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

Chambers 1 and 2 – Initial Occupancy Scenario When Chambers 1 and 2 (and the CUC) are turned over to science some CF utilities will be in place. Because we have not had recent access to our designer we have not been able to determine the status of utility installation at initial turn over. During final design we will work out the utility issues. All of the utilities will be in place about 12 months after science has had access to these spaces. Unfortunately until we get access to our designer we cannot tell you anything more specific about utilities. At initial occupancy, other than the monorails which should be fully functional in detector chambers 1 and 2, CF is not planning for any bridges or other mechanical access to the floor of the detector chambers. The CM/GC is planning to install temporary stairs to the chamber floor that can be left in place for science. Requirements for any other access that might be wanted need to be defined. 14 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

Chambers 3 and 4 Occupancy Chamber 3 will be available to science about 9-10 months after science has first gained access to chambers 1 and 2. About 18 months after science first gained access to chambers 1 and 2 all other areas will be available including chamber 4. 15 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

Access From Below Exists But ….. Note that the temporary bulkhead is being removed, and the center access drift is being centered on the septum. Cryogenics will be adjusting the footprint cryo equipment in the CUC accordingly. 16 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

Access From Below Exists But ….. Is Not Available Until After Chamber 4 is Excavated Blast doors/bulkheads separate “dirty” excavation and air exhaust spaces from “clean” science spaces 17 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

Requirements Update Items Being Addressed as Possible “Host Laboratory” Responsibilities Title Sub-project responsibility Machine Shop (mucking ramp?) Host Lab Survey network to allow positioning of the Host Lab various components Underground evacuation system Host Lab Fire detection system Host Lab GSM phone antenna and wireless network Host Lab Electrical distribution system with Host Lab European type electrical power (230 V, 50 Hz) Safety crews to monitor work done and its Host Lab preparation Survey team Host Lab Emergency intervention team Host Lab Procurement system to allow an effective Host Lab procurement procedure for small material and tools needed locally 18 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

Requirements Update Items Already Adopted and Implemented Title Rationale ​Exhaust ventilation ductwork to the base of the ​Provide adequate circulation for occupation during rock septum rather than the top warm structure construction. Temporary use of exhaust duct ​Mezzanine shift 4.8 m from end wall ​Avoid limiting access to end of detector ​Add a ninth and tenth connection points for ​provide flexibility for design of cryo equipment on mezzanine supports on rock wall and vertical the mezzanine connection point (horizontal and vertical connection points) ​Eliminate blast wall between chambers 1 and 2, ​Makes crane coverage symmetrical. The bulkhead is shift central access drift to center of pillar finished Jan 21, 2021. Chamber 2 excavation is finished April 19, 2021. Warm structure #1 starts Cryogenics will be adjusting the footprint cryo equipment in the CUC accordingly May 3, 2021. ​CF to provide adequate connections for lighting ​Cryo needs somewhere to connect and fire protection to be added below the mezzanine by others. 19 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF

Requirements Update Items Needing More Work Title Notes ​CF to provide permanent Alimak type elevators for each ​9/13/2017: This is a new requirement, need to identify who has chamber (Assume chamber 3 and 4 would be scope responsibility to come up with this requirement. 10/10/2017: no update. i) options). Need headcount, load, ii) work deck. Two requirements. 10/25/2017: Conveyance strategy TBD in December 2017. ​Conductivity testing for concrete slab ​9/13/2017: Terri needs to define the need for the test and its requirements. 10/10/2017: We want high resistivity concrete in addition to non conductive rebar. Terri to verify 500 ohm-meter numbers 10/25/2017: Terri waiting for feedback from Veljko Radeko by next ​Design accommodations for a bridge crane ​9/20/2017: Conveyance strategy TBD in December 2017 ​Additional monorail hoists? With removal of blast wall, do ​9/20/2017: Conveyance strategy TBD in December 2017 monorails between chambers become continuous over the septum ​Mezzanine load increase - 10/16/17 LBNC presentation ​9/20/2017: Documenting latest loading condition is specified. talked about need to provide updated loading parameters - Requirements and ICDs to be updated. are loads finalized? 10/10/2017: need update from David 10/25/2017: Cryo to provide worst case load numbers. 20 12.18.17 T. Lundin December 18, 2017 Interface Meeting LBNF