numi numi review of the infrastructure – w, g & v 20 july 2001 wbs 1.1.7 page 1 1...

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NuMI Review of the Infrastructure – W, G & V

20 July 2001WBS 1.1.7

Infrastructure Review - W.B.S. 1.1.7 Water Systems

• Water Systems– Upstream LCW for Extraction and Pre-Target Magnets & P.S.

– Downstream LCW for cooling the MINOS Near Detector Coil, Power supply and Electronics Racks.

– Downstream RAW for cooling the Absorber .

– Decay Pipe Cooling for cooling the decay pipe.

– Horn RAW (RadioActive Water), for cooling the Horns.

– Target RAW for cooling the target, horn protection baffles.

• Vacuum Systems– Extraction and Primary Beam, Hadron Decay Pipe

• Gas Systems– Primary Beam Instrumentation

– Secondary Beam Instrumentation

• WILL HAVE A SEPARATE REVIEW OF THE RAW SYSTEMS ON 8/1/01

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20 July 2001WBS 1.1.7

Infrastructure Review - W.B.S. 1.1.7 Upstream LCW (MI-62) System

• U.S. LCW System has LCW pumps, Heat Exchanger located in MI-62.

• Heat Exchanger sized for 1200 kW, actual heat load is approximately 750kW. HX is a shell and tube unit and is already in MI-62. Strand needs to be built, stands drawings underway.

• 550 gpm pump, 440 feet TDH, 100 HP. Pump spec’d not purchased. Will include a hot stand-by unit.

• Provides LCW to all magnets in extraction and pre-target areas, Power supplies in MI-62, TSB, Underground Mechanical Space (horn P.S.)

• ~ 4630 gallons of LCW in the piping, more in exp. tank.

• Heat rejected to MI pond G via pumps in PV-9. Existing pumps are not perfectly fit to our application (too much head with two pump operation/too little flow for one pump operation).

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20 July 2001WBS 1.1.7

Infrastructure Review - W.B.S. 1.1.7 Upstream LCW (MI-62) System

• Status of the Upstream LCW System:– Piping already installed in MI up to the shield wall.– Piping will need to be extended in MI after the shield wall is

removed.– MI-62 piping laid out as far as possible w/o pump and strainer

selections finalized.– Piping Installation in the carrier tunnel, pre-target, shaft,

underground mechanical area, and NuMI Target Service Building (MI-65?) to be in the Outfitting and Service Building Contract

– Instrumentation List Complete• Best scheme to read in to/out of ACNET not yet settled.• Will use one PID loop to control temperature• Will have a few pump interlocks

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20 July 2001WBS 1.1.7

Infrastructure Review - W.B.S. 1.1.7 Downstream LCW (MINOS) System

• D.S. LCW System has LCW pumps, Heat Exchanger located in the MINOS Near Detector Hall.

• Heat Exchanger sized for 200 kW, actual heat load is approximately 110kW. Will use a welded plate and frame HX.

• 160 gpm pump, 35 feet TDH, 3 HP. Pump not spec not yet written. Will include a hot stand-by unit. Will have a booster pump for the power supply just like the one at NMS currently.

• Provides LCW to the near detector magnet coil, power supply, and 27 water cooled electronics racks.

• ~ 150 gallons of LCW in the piping, more in expansion tank, rack, magnet coil.

• Heat rejected to MINOS chilled water (same water used for de-humidification in the underground spaces).

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20 July 2001WBS 1.1.7

Infrastructure Review - W.B.S. 1.1.7 Downstream LCW (MINOS) System

• Status of Downstream LCW (MINOS) System:– Piping layout drawings completed.

– Piping to be installed in the Service Building and Outfitting Contract.

– Skid Design not started.

– Instrumentation List Complete• Best scheme to read in to/out of ACNET not yet settled.

• Will use one PID loop to control temperature

• Will have a few pump interlocks

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20 July 2001WBS 1.1.7

Infrastructure Review - W.B.S. 1.1.7 Absorber Cooling RAW System

• Absorber RAW System has pumps, heat exchanger located in the absorber access tunnel. Intermediate loop has the pumps, heat exchangers and filters located in the MINOS service building.

• Heat Exchangers sized for 200 kW, actual heat load is approximately 130kW. Will use a welded plate and frame HX between RAW and intermediate loop, a S&T between intermediate loop and the pond water.

• Both RAW and Intermediate loop pumps are 60 gpm pumps, 65 feet TDH, 3 HP. Pump not spec not yet written. Will include a hot stand-by unit for both RAW and Intermediate loop pumps.

• Provides cooling to remove the beam energy deposited in the absorber along the vacuum decay pipe.

• ~ 90 gallons of water in the absorber and piping, more in expansion tank, heat exchangers and manifolds.

• Heat rejected to MINOS pond water.• Activation of water not yet quantified.

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20 July 2001WBS 1.1.7

Infrastructure Review - W.B.S. 1.1.7 Absorber Cooling RAW System

• Status of the Absorber Cooling RAW System:– Piping layout drawings have not been started.


– Skid Design not started for either the RAW or the Intermediate loop skid.


• Will use one PID loop to control temperature for the intermediate loop, no direct temperature control on the RAW loop.


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20 July 2001WBS 1.1.7

Infrastructure Review - W.B.S. 1.1.7 Decay Pipe Cooling RAW System

• Decay Pipe RAW System has pumps, heat exchanger located in the absorber access tunnel @ d.s. end and heat exchanger, filter, DI bottle in the underground mechanical support room at u.s. end.


• 50 gpm pump, 325 feet TDH, 7.5 HP. Pump not spec not yet written. Will include a hot stand-by unit.

• Provides cooling to remove the beam energy deposited in the shielding along the vacuum decay pipe.

• ~ 1250 gallons of water in the piping, more in expansion tank, heat exchangers.

• Heat rejected to MINOS chilled water (same water used for de-humidification in the underground spaces) at downstream end and to the intermediate loop of CUB water at the upstream end (also used for de-humidification in the underground spaces).

• Activation of water is not severe. Should not have to change this water during the life of the experiment.

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20 July 2001WBS 1.1.7

Infrastructure Review - W.B.S. 1.1.7 Decay Pipe Cooling RAW System

• Status of the Decay Pipe Cooling System:– Piping layout drawings started in PPD.

• Have begun to change the layout to move the connections between individual tubes and the manifold to an accessible area.


– Skid Design not started.

– Equipment Purchase Requisitions and specifications not prepared.

– Changing from 1” nominal copper lines to ¾” nominal polyethylene coated copper lines to prevent galvanic corrosion between the copper and the low carbon steel decay pipe.

• The decay pipe is less noble, therefore it would corrode, possibly causing a vacuum leak.


• No temperature control


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20 July 2001WBS 1.1.7

Infrastructure Review - W.B.S. 1.1.7 Horn 1 Cooling RAW System

• Horn 1 RAW System has pumps, heat exchanger, filter, DI bottle in the underground mechanical support room at u.s. end.


• 115 gpm pump, 61 feet TDH, 5 HP. Pump not spec not yet written. Will include a hot stand-by unit.

• Provides cooling to remove the beam energy and I2R deposited in horn 1.

• ~150 gallons of water in the piping, more in expansion tank, heat exchangers.

• Heat rejected to the intermediate loop of CUB water at the upstream end (also used for de-humidification in the underground spaces).

• Activation of water is severe. Will change annually but will also exceed the recommended concentrations.

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20 July 2001WBS 1.1.7


• Status of Horn 1 Cooling Raw System:– Piping layout drawings 90% completed.


– Skid Design has just been started.


• No temperature control is used


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20 July 2001WBS 1.1.7


• Horn 2 RAW System has pumps, heat exchanger, filter, DI bottle in the underground mechanical support room at u.s. end.



• Provides cooling to remove the beam energy and I2R deposited in horn 2.


• Heat rejected to the intermediate loop of CUB water at the upstream end (also used for de-humidification in the underground spaces).

• Activation of water is severe. Will change annually but will also exceed the recommended concentrations.

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20 July 2001WBS 1.1.7


• Status of Horn 2 Cooling RAW System:– Piping layout drawings 90%completed.


– Skid Design has just been started.




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20 July 2001WBS 1.1.7

Infrastructure Review - W.B.S. 1.1.7 Target Cooling RAW System

• Target RAW System has pumps, heat exchanger, filter, DI bottle in the underground mechanical support room at u.s. end.



• Provides cooling to remove the beam energy and I2R deposited in the target and baffle.


• Heat rejected to the U.S. LCW system.

• Activation of water is unknown as it has not yet been calculated.

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20 July 2001WBS 1.1.7

Infrastructure Review - W.B.S. 1.1.7 Target Cooling RAW System

• Status of the Target and Baffle RAW System:– Piping layout drawings 90%completed.


– Skid Design has not started.

– There remains some difference of opinion as to if the beam baffle is, or is not, water cooled. This has a negligible affect on the cost.




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20 July 2001WBS 1.1.7

Vacuum

• Vacuum in the Primary Beam: – Designing for a 1 x 10-6 torr level in the instrumentation region of

the primary beam transport pipe. P&ID prepared.– Generated Instrument Lists for extraction.– Pre-Target Instrument List not completed – Parts for Vacuum Instrumentation being purchased. Custom

building of controller chassis for Ion pumps and instrumentation.

• Decay Pipe Vacuum:– Decay system P&ID prepared. 24 hour pump down calculated

• 48 liters of water is the maximum volume of water in the air in the decay pipe assuming 100% relative humidity at the beginning of the pump down.

– Skid drawings not yet started nor equipment specified.

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20 July 2001WBS 1.1.7

Gas Systems

• Gas Systems for:

– Loss monitors for primary beam area (Ar-CO2)

– Secondary beam Monitoring (He-2%H2)

• Status:

– Both system designs remain on hold pending instrumentation development.

– Significant chance that the secondary beam monitoring may choose a technology which does not require gas.

numi numi review of the infrastructure – w, g & v 20 july 2001 wbs 1.1.7 page 1 1...

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