Long-Baseline Neutrino FacilityLBNF

Print Package Review & Major Electrical Requirements

131.01.03.03.02.04.02 Primary Water LCW System

131.01.03.03.02.04.03 Electrical Bus

Noah Curfman

October 31, 2019

Primary Beamline

Low Conductivity Water (LCW)

Preliminary Design Review

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LBNF-05 Magnet LCW Overall Flow Schematic

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LBNF-05 Magnet LCW Overall Flow Schematic

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Remotely operated 3-way valve Primary LCW pumps

Heat Exchanger Bypass Pump Diagram

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LBNF-05 Magnet LCW Overall Flow Schematic

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Standard DI/Filtration loop

Remotely operated electric valve

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LBNF – 5 Service Building LCW Piping Arrangement

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• Bus will run directly

above power supplies

• Indicated crossover will

not occur in practice

LBNF – 5 Service Building LCW Piping Arrangement

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LBNF – 5 Service Building LCW Piping Arrangement

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• Previously specified aluminum

monocoque shielding for bus

no longer suitableMore complex bus

routing incompatible with monocoque shielding

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Reverse return reduces dP variances between magnets

LBNF Primary Beamline LCW & Bus Flow Schematic

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LBNF Primary Beamline LCW & Bus Flow Schematic

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Standard dipole/quad/dipole cell

2”x2” to 1”x4” bus connector without LCW pass-thru

Recirculation jumper

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LBNF Primary Beamline LCW & Bus Flow Schematic

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Air separators at tunnel crestRemotely operated electric valves

LBNF LCW Fill System Beamline Tunnel Crest

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LBNF – 5 Service Building Power Supply P&ID

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LBNF – 5 Service Building Power Supply P&ID

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• One flow control valve per

power supply

• Bus jumpers between A/B

power supplies are external

Griswold Flow Control Valves

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LBNF – 20 Target Hall Power Supply P&ID

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Instrumentation

• Designed based on MI and similar LCW Systems

• Detailed estimates and info found in DUNE DocDB Doc #9955

• Specific component selection delayed to take advantage of

emerging technologies

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System Redundancy

• Two 150HP Pumps, one running, one hot spare

• Both pumps VFD controlled

• All major components may be valved out for replacement

• Filters

• DI bottles

• Power supplies

• Instrumentation

• Magnet cells

• Recirculation jumpers on all supply/returns

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Electrical Requirements

• 2 primary circulation pumps with VFDs

• 3 electrically actuated valves

- 1 valve in pump room

- 2 valves in beam enclosure

• 1 three-way valve to control HX flow

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Power RequirementsQuantity Rated Power Voltage Input Phase I @ Full Load I @ Stall

Primary Pumps 2 150 HP 480 V Three 177 A 969.4 A

Recirculation Pump 1 1/2 HP 480 V Three 2.2 A Not Listed

Primary Pump VFDs 2 150 HP 480 V Three 180A N/A

3 Way Valve Actuator 1 1/12 HP 480 V Three 0.32 A 1.16 A

Electrically Operated Valves 3 0.5 HP 120 V Single Not Listed 3A (est.)

Control Panel 1 N/A 110V Single 15A N/A

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LBNF Vehicle Access Tunnel LCW Piping & Bus Layout

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LBNF Beamline LCW Pipe & Bus Routing

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• Provides maximum room for cable trays in alcove

• 2” LCW Downstream return continues into alcove for Q211

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Full Layout Envelope Showing Bus LCW Cable Trays and Headers

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Full envelope layout showing all possible components along

beamline wall

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Full Layout Envelope Showing Bus LCW Cable Trays and Headers

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Full envelope layout showing all possible components along

beamline wall

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System Design Requirements

• Meet previously described operational goals

• Require minimal unscheduled interventions

• Meet established lab standards for flow and capacity

• Operate over a range of elevations determined by CF

• Use pond water for cooling and MI LCW for fill

• Conform to ASME B31.3 and FESHM 5031.1

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Fluid Low Conductivity Water

Resistivity 9MΩ·cm or better

Nominal Temperature 95°F

Radioactivity < 1900 pCi/ml

MAWP 200 psig

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