Vacuum Vessel Design Modification and Stress Analysis Neway Atnafu PPPL, NSTX Design Review Meeting...
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Transcript of Vacuum Vessel Design Modification and Stress Analysis Neway Atnafu PPPL, NSTX Design Review Meeting...
![Page 1: Vacuum Vessel Design Modification and Stress Analysis Neway Atnafu PPPL, NSTX Design Review Meeting September 14, 2011.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d405503460f94a199c8/html5/thumbnails/1.jpg)
Vacuum Vessel Design Modification and Stress Analysis
Neway AtnafuPPPL, NSTX Design Review Meeting
September 14, 2011
![Page 2: Vacuum Vessel Design Modification and Stress Analysis Neway Atnafu PPPL, NSTX Design Review Meeting September 14, 2011.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d405503460f94a199c8/html5/thumbnails/2.jpg)
Reinforcements
Two 3”X6.671”X41” Column surrounding Bay-L.
Four 1” thick SS plated on the corners of Bay-K.
Two ¾” thick 90° angles near Bay-K.
Two 2” thick bridges b/n Bay-L and Bay-A.
Two 2” Gussets around Bay-L.
And, Fillet weld around Bays K, L and A.
![Page 3: Vacuum Vessel Design Modification and Stress Analysis Neway Atnafu PPPL, NSTX Design Review Meeting September 14, 2011.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d405503460f94a199c8/html5/thumbnails/3.jpg)
Analysis Result
![Page 4: Vacuum Vessel Design Modification and Stress Analysis Neway Atnafu PPPL, NSTX Design Review Meeting September 14, 2011.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d405503460f94a199c8/html5/thumbnails/4.jpg)
FIDA
The FIDA Tube (which is 5.03” OD and 5/8” thick) is fully welded to the VV.
FIDA Tube is cut 1” away from the VV
FIDA is OK!
![Page 5: Vacuum Vessel Design Modification and Stress Analysis Neway Atnafu PPPL, NSTX Design Review Meeting September 14, 2011.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d405503460f94a199c8/html5/thumbnails/5.jpg)
Bay KGood News? It’s compressive stress; meaning no
fatigue concern! If we’re fine with that, Bay-K is OK!
![Page 6: Vacuum Vessel Design Modification and Stress Analysis Neway Atnafu PPPL, NSTX Design Review Meeting September 14, 2011.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d405503460f94a199c8/html5/thumbnails/6.jpg)
Bay L
The stress is below the yield point; but needs discussion.
Good News? It’s compression stress!!
Can’t put more gussets in that area, as the space is needed for RWM Coils.
![Page 7: Vacuum Vessel Design Modification and Stress Analysis Neway Atnafu PPPL, NSTX Design Review Meeting September 14, 2011.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d405503460f94a199c8/html5/thumbnails/7.jpg)
Bridges
Again, the stress in the affected area is compression stress.
So, it will yield locally and vanishes.
![Page 8: Vacuum Vessel Design Modification and Stress Analysis Neway Atnafu PPPL, NSTX Design Review Meeting September 14, 2011.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d405503460f94a199c8/html5/thumbnails/8.jpg)
Bay A
Bay-A is OK!
![Page 9: Vacuum Vessel Design Modification and Stress Analysis Neway Atnafu PPPL, NSTX Design Review Meeting September 14, 2011.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d405503460f94a199c8/html5/thumbnails/9.jpg)
Thomson Scattering
![Page 10: Vacuum Vessel Design Modification and Stress Analysis Neway Atnafu PPPL, NSTX Design Review Meeting September 14, 2011.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d405503460f94a199c8/html5/thumbnails/10.jpg)
Thomson Scattering Contd.
View from in-vessel