David Schleeper work items

JLab

2/16 Update

• CHL:

  1 Replacement/upgrade of LN2 fill station gauging:
    -Materials: On-site
    -Pressure System:  Standard Maintenance
    -Drawings: N/A
    -Fabrication:  N/A
    -Operations:  Assigned Tank 2 complete.  Dewars have been aligned to support the gauge replacement.
    -Testing:  Snoop upon installation.

  2 CHL Guard Vacuum
    -Materials:  installed
    -Pressure System:  Signed
    -Drawings: Complete
    -Fabrication: Removal/repair of the hand rail.
    -Operations: Will need to remove feet, grout, shim and anchor the feet.  Will require welding.
    -Testing:  To be initial service leak checked upon completion of electrical work.  Pump temperatures will also need to be monitored.

  3 LN2 Dewar #1 instrumentation tubing replacement
    -Materials:  On-site
    -Pressure System:  Signed
    -Drawings: Complete
    -Fabrication: All paperwork and materials are with Scott.  He is scheduling.
    -Operations: N/A
    -Testing:  To be initial service leak checked upon completion.  

  4 LN2 PBC leaks
    -Materials:  TBD
    -Pressure System:  TBD
    -Drawings: TBD
    -Fabrication: TBD
    -Operations: All leaks have been identified and tabulated.  Ops is investigating the repair of threaded connections.
    -Testing:  Snoop

  5 CHL Recovery Purifier Sieve replacement
    -Materials:  on-site
    -Pressure System:  N/A
    -Drawings: N/A
    -Fabrication: N/A
    -Operations: P5 sieve replaced and ready for use.
    -Testing:  N/A

  6 ESR ORS Carbon Replacement
    -Materials:  Lifting adapter approved by Sprouse.  Estimating ~$350 for materials
    -Pressure System:  N/A
    -Drawings: Need to be developed.  Sent to Corey for him to prioritize.
    -Fabrication: awaiting drawings
    -Operations: Needs to be scheduled/planned.  Probably next summer
    -Testing:  Spool pieces will need to be tested.

  7 ESR 15K U-tube
    -Satisfactorily tested and ready for install.

  8 ESR Oil collection
    -Materials:  Ordered
    -Pressure System:  N/A
    -Drawings: Sketch delivered to shop.
    -Fabrication: TBD
    -Operations: Will require familiarity with system prior to installation.
    -Testing:  not likely. category D piping at most.

  9 CHL IA modification
    -Materials:  ordered
    -Pressure System:  Cat D
    -Drawings: in development
    -Fabrication: TBD
    -Operations: N/A
    -Testing:  Initial service leak test

  10 CHL purifier sieve heater
    -The improved methods for regenerating the sieve beds to be performing sufficiently well that a new design is not necessary.  The design criteria has been saved in the purifier pressure system folder.

ESR Status

1. Hall A:

 - Magnets cold, on cold return, controlling properly
 - Warm flows return to ESR
 - Target cold.

1. Hall B:K

 - Torus at 
 - Warm flows return to CHL
 - Solenoid scheduled for May delivery

1. Hall C:

 - All magnets cold, on cold return
 - Warm flows return to CHL
 - Return transfer line replacement did not alleviate magnet pressure issue.
 - Q3 and dipole testing underway.
 - Target was successfully cooled and maintained on 2/28.
 - KPP scheduled for March.