End Station Personal Safety Shutter TSC Design Presentation
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Transcript of End Station Personal Safety Shutter TSC Design Presentation
![Page 1: End Station Personal Safety Shutter TSC Design Presentation](https://reader036.fdocuments.net/reader036/viewer/2022062314/56813061550346895d962fda/html5/thumbnails/1.jpg)
End Station Personal Safety ShutterTSC Design Presentation
![Page 2: End Station Personal Safety Shutter TSC Design Presentation](https://reader036.fdocuments.net/reader036/viewer/2022062314/56813061550346895d962fda/html5/thumbnails/2.jpg)
ES PSS Assembly
Safety Requirements:
Established OP 02-30
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History - LBL Engineering note #10450
Different Versions:
Proto
Original
Current
- Rev. A (6mm.)
- Rev. 1 (22mm.)
- Rev. E (0.125”)
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ES PSS Assembly Design
Primary design details:
Critical dimensions remain same
Design is retro-fitable
New switches
New switch actuation design
New switch access design
Meets OP 02-30 procedure criteria
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New Switch Specification
Switch Details:
“924CE1-S3”
Safety Rated
High Cycle life Reputable Manufacturer
Available
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ISO Views
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Upper and Lower Switch Actuation
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Back Side Access and Top View
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General Design Changes
Changes to address Tracking issues:
1) Documentation via an engineering notes
#10450 - MDC Specific
#10457 - General PSS Assys at ALS
2) New part number assigned, Old versions obsolete
3) Shutters need tag for exterior indication
- Name (LBL ALS ES PSS Assy)
- Part number (200863-2002)
- Serial number (unique for ever unit)
4) Print details
- Fabrication/ Assembly Procedure
- Bill of material / wire diagram
- Reference LBL Engineering note #10450
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Specific Mechanical Improvements
Changes to address fabrication and reliability issues:
1) Bellows leaks -> Usage 30K cycles vs. 100K cycles design
- MDC design changes to increase number of cycles
2) Limit Switch failures -> New switches and actuation design
3) Access to switches -> New door style access
4) Paddle thickness -> Specified as 0.125” minimum
- Changes design requires new assembly
5) Assembly inconsistencies -> MDC Procedure requirement added
6) Operational issues -> MDC Testing required.
- Electrical circuit verification.
- Cycle test – at least 100 cycles.
- Paddle thickness measured.
- Documentation to be provided.
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Misc. views of assembly
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Front Access View
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Old Switch Design
Old design / issues:
Switch not safety rated
Low cycle life
Improper actuation
No adjustability
Wire damage
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ES PSS Assembly Checklist
To be completed after fabrication and delivered with each PSS assembly.
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ES PSS Assembly
Safety Requirements:
Established OP 02-30
Changes have not effected these requirements or have incorporated them.