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2004 LST Installation Readiness Review

Detailed overview of the production process for brass absorber plates, including machining, cambering, and potential risks.

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2004 LST Installation Readiness Review

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  1. 2004 LST Installation Readiness Review Brass Absorber Production H.J. Krebs May 5, 2004 H.J. Krebs

  2. Brass Absorber H.J. Krebs

  3. Brass Absorber H.J. Krebs

  4. Brass Absorber Production • Total of 180 brass plates to be produced – includes spares • Qty 30 10.5”x112.833”x.875” thick • Qty 30 10.5”x106.287”x.875” thick • Qty 30 10.5”x100.650”x.875” thick • Qty 30 10.5”x95.195”x.875” thick • Qty 30 10.5”x90.194”x.875” thick • Qty 30 10.5”x85.193”x.875” thick • The first 60 brass plates are enroute to SLAC • The remaining plates to be delivered by mid May • Plates require final machining and cambering • Tapped holes for rigging • Edges rounded • Cambered to remove deflection • Stainless steel slide angles are in-house H.J. Krebs

  5. Brass Cambering Fixture H.J. Krebs

  6. Brass Plate Prior to Cambering H.J. Krebs

  7. Brass Plate Ready to Be Cambered H.J. Krebs

  8. Cambering Process H.J. Krebs

  9. Brass Plate After Cambering H.J. Krebs

  10. Cambered Brass Plate Creep Test H.J. Krebs

  11. Potential Risks • We expect no problems receiving the absorber plates in plenty of time to perform the final machining and cambering process. • The final machining process may take longer than expected. • We believe the possibility of this is low. • It took us 30 minutes to drill and tap the prototype plate and round the edges – 30 min * 180 plates = 90 hours • We can put more manpower on this if needed. • The cambering process may take longer than expected and may be more difficult than expected • We believe the possibility of this is low. • It took us 45 minutes to setup our camber fixture to the appropriate shim configuration and camber one plate • Subsequent plates could easily be cambered at the rate of 15 minutes per plate – 15min * 180 plates = 45 hours • A local vendor can camber the plates for us if needed. H.J. Krebs

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