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CR3 Steam Generator Replacement Movement Steps for Removal and Installation

CR3 Steam Generator Replacement Movement Steps for Removal and Installation. Information Derived from EC/ED 67484. Linda Pressley McCray Nuclear Designer Crystal River Nuclear Plant. Performance of Motion Analysis.

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CR3 Steam Generator Replacement Movement Steps for Removal and Installation

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  1. CR3 Steam Generator ReplacementMovement Steps for Removal and Installation Information Derived from EC/ED 67484 Linda Pressley McCray Nuclear Designer Crystal River Nuclear Plant

  2. Performance of Motion Analysis First, a 3D Model was created which includes all structures, systems and components located within the D-ring. All input for the model was gathered from pertinent component information located on the associated CR3 Station drawing.

  3. Performance of Motion Analysis Next, an independent validation of the original 3D model geometry was performed by the SGR Project Design group.

  4. Performance of Motion Analysis • An additional layer of model validation was performed by AREVA who overlaid our CR3 3D model on top of AREVA’s 3D Laser Scanned model • AREVA compiled a list of all deltas found within a four foot radius surrounding each generator • Each delta has been resolved and the SGR 3D model is considered to be an accurate depiction of the CR3 as-built configuration

  5. Performance of Motion Analysis • A motion analysis has been performed for each generator which identifies all potential interferences and specifies a removal and installation path that provides sufficient clearances to all identified plant structures, systems and components

  6. Symbols Used The light blue North Arrow is used as a stationary point for tracking purposes on each clearance drawing. Point originates from the center of the generator @ EL 95'. The yellow and red North Arrow is embedded in the generator to show generator movement.

  7. Symbols Used Denotes clearance of 6 inches or less. Great care must be taken at caution points to prevent the generator from colliding with plant structures, systems and/or components

  8. Generator “A” Removal Path assumes all service water piping remains in place during the removal phase. This will provide the option of removing appropriate sections of service water piping after the existing generators have been removed.

  9. Generator “A” Removal The auxiliary feedwater header and main feedwater header will be disassembled and removed from generator “A” prior to removal of generator Auxiliary Feedwater Header Main Feedwater Header

  10. Generator “A” Removal INITIAL STEP PLAN VIEW Prior to manipulation • Auxiliary feedwater header and main feedwater header will be removed prior to removal of generator

  11. Generator “A” Removal INITIAL STEP ELEVATION VIEW Prior to manipulation • Generator base is at EL 95’-0” • Auxiliary feedwater header and main feedwater header will be removed prior to removal of generator

  12. Generator “A” Removal INITIAL STEP ISOMETRIC VIEW Prior to manipulation • Generator base is at EL 95’-0”

  13. Generator “A” Removal • STEP #1 • ELEVATION VIEW Raise Generator 25 Feet • Generator base is at EL 120’-0” • Positions cold leg pieces for unobstructed rotation

  14. Generator “A” Removal STEP #1 PLAN VIEW CLEARANCES Raise 25 Feet • Clearances shown between vertical steel and generator cylinder on west side and between RCP steel and generator cylinder on both east and west sides

  15. Generator “A” Removal • STEP #1 • ISOMETRIC VIEW • Raise 25 Feet • Generator base is at EL 120’-0”

  16. Generator “A” Removal STEP #2 PLAN VIEW CLEARANCES Rotate Clockwise 90 Degrees • Positions cold leg pieces for unobstructed removal path Clearances shown between vertical steel and generator cylinder on west side, between service water piping and generator cylinder on east side, and between RCP steel and generator cylinder on both east and west sides.

  17. Generator “A” Removal • STEP #3 • ELEVATION VIEW • Raise 60 FEET – 6 INCHES • Raises generator above remaining obstructions • Generator base is at EL 180’-6”

  18. Prepare To Install Replacement Generator

  19. Generator “A” InstallationInsulation Support Assemblies • Some of the insulation support assemblies shown on the replacement generator are placed in temporary locations for installation to eliminate interferences during rigging • These insulation support assemblies will be moved to their final destination after the replacement generator has been installed

  20. Generator “A” Installation Path assumes removal of interfering portions of the following as designated in the governing EC package: Service Water Piping 305-706, 305-707, 305-710, 305-711 and associated hangers; and One Inch Piping 3A-4153-SW-2, 3A-4154-SW-1 and associated hangers.

  21. Generator “A” Installation

  22. Generator “A” Installation INITIAL STEP PLAN VIEW Prior to manipulation • Generator base is at EL 180’-6”

  23. Generator “A” Installation INITIAL STEP ELEVATION Prior to manipulation • Generator base is at EL 180’-6” • Generator “A” Coordinates: (From Reactor Building center to center of generator base) X = 17’-9 31/32” Y = 30’-4 ½” Z = 180’-6”

  24. Generator “A” Installation INITIAL STEP ISOMETRIC VIEW Prior to manipulation • Generator base is at EL 180’-6”

  25. Generator “A” Installation STEP #1 PLAN VIEW Drift North 21 Inches • Generator base is at EL 180’-6” • Moves generator away from obstacles interfering with first downward movement

  26. Generator “A” Installation STEP #2 PLAN VIEW Drift West 4.5 Inches • Generator base is at EL 180’-6” • Equalizes distance between interferences prior to lowering

  27. Generator “A” Installation STEP #3 ELEVATION VIEW Lower 68 Feet • Generator base is at EL 112’-6” • Places main feedwater header below RCP support steel

  28. Generator “A” Installation STEP #3 PLAN VIEW CLEARANCES Lower 68 Feet • Generator base is at EL 112’-6” • Places main feedwater header below RCP support steel Clearances shown occur DURING downward movement.

  29. Generator “A” Installation STEP #3 ELEVATION VIEW CLEARANCES Lower 68 Feet • Generator base is at EL 112’-6” • Clearance shown is between main feedwater header outlet and steel at EL 164’-1”

  30. Generator “A” Installation STEP #3 PLAN VIEW CLEARANCES Lower 68 Feet • Generator base is at EL 112’-6” • Clearances shown reflect dimensions AFTER generator is lowered to EL 112’-6”

  31. Generator “A” Installation STEP #3 ISOMETRIC VIEW Lower 68 Feet • Generator base is at EL 112’-6” • Places main feedwater header below RCP support steel

  32. Generator “A” Installation STEP #4 PLAN VIEW CLEARANCES Drift South 10 Inches • Generator base is at EL 112’-6” • Moves generator away from main steam hangers

  33. Generator “A” Installation STEP #4 ROTATED ISOMETRIC VIEW Drift South 10 Inches • Generator base is at EL 112’-6” • Moves generator away from main steam hangers

  34. Generator “A” Installation STEP #5 PLAN VIEW CLEARANCES Drift East 4.5 Inches • Generator base is at EL 112’-6” • Moves generator away from vertical steel at EL 128’-0”

  35. Generator “A” Installation STEP #6 ELEVATION VIEW Lower 11 Feet 6 Inches • Generator base is at EL 101’-0” • Moves generator to suitable point for final positioning

  36. Generator “A” Installation STEP #6 PLAN VIEW CLEARANCES Lower 11 Feet 6 Inches • Generator base is at EL 101’-0” • Moves generator to suitable point for final positioning

  37. Generator “A” Installation STEP #6 ELEVATION VIEW CLEARANCES Lower 11 Feet 6 Inches • Generator base is at EL 101’-0” • Clearances shown are between the main feedwater header ring and the vertical steel located on the east and west

  38. Generator “A” Installation STEP #7 PLAN VIEW CLEARANCES Drift South 11 Inches • Generator base is at EL 101’-0” • Returns generator to original coordinates prior to setting • 3 5/8” clearance is between the corner of the RCP steel and the nearest aux. feedwater header riser and is shown in elevation view on the next slide

  39. Generator “A” Installation STEP #7 ROTATED VIEW CLEARANCE Drift South 11 Inches • 3 5/8” clearance is between the corner of the RCP steel and the nearest aux. feedwater header riser • Clearance is shown in PLAN VIEW view on previous slide

  40. Generator “A” Installation STEP #7 ELEVATION VIEW CLEARANCES Drift South 11 Inches • Generator base is at EL 101’-0” • Clearances shown are between the main feedwater header ring and the vertical steel located on the east and west • As generator is drifted south the clearances between the main feedwater header ring and the vertical steel remain the same as in Step #6

  41. Generator “A” Installation STEP #8 ELEVATION VIEW CLEARANCE Lower 6 Feet • Sets Generator – Base is at EL 95’-0” • Clearance shown is between the main feedwater header ring and the vertical steel located east of the generator

  42. Generator “A” Installation STEP #8 PLAN VIEW CLEARANCES Lower 6 Feet • Sets Generator • Generator Base is at EL 95’-0” • This final lowering movement places the aux. feedwater header risers below the RCP steel. 4 13/16” clearance is between the main feedwater header ring and the vertical steel (see previous slide)

  43. Generator “A” Installation STEP #8 SIDE VIEW VERTICAL CLEARANCE Lower 6 Feet • Sets Generator • Generator Base is at EL 95’-0” • Vertical clearance shown is between the RCP steel and the nearest aux. feedwater header riser

  44. Generator “A” Installation STEP #8 ELEVATION GENERATOR IS SET Final Destination • Generator Base is at EL 95’-0”

  45. Prepare To Remove “B” Generator

  46. Generator “B” Removal Path assumes all service water piping remains in place during the removal phase. This will provide the option of removing appropriate sections of service water piping after the existing generators have been removed.

  47. Generator “B” Removal The auxiliary feedwater header and main feedwater header will be disassembled and removed from generator “B” prior to removal of generator Auxiliary Feedwater Header Main Feedwater Header

  48. Generator “B” Removal INITIAL STEP ELEVATION VIEW Prior to manipulation • Generator base is at EL 95’-0” • Auxiliary feedwater header and main feedwater header have been removed

  49. Generator “B” Removal INITIAL STEP ISOMETRIC VIEW Prior to manipulation • Generator base is at EL 95’-0”

  50. Generator “B” Removal • STEP #1 • ELEVATION VIEW Raise Generator 25 Feet • Generator base is at EL 120’-0” • Positions cold leg pieces for unobstructed rotation

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