k. long, 13 july, 2015 target k. long, monday, 06 july 2009
Post on 22-Dec-2015
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TRANSCRIPT
Critical path:
• Issue: target shaft:– Two approaches to shaft manufacture planned:
• ‘One piece’: weld two pieces together, then grind to size• ‘Two piece’: grind to size, then weld
– One-piece shaft has failed:• Grinding company removed too much material and compromised weld:
– One shaft ‘fell apart’ at grinders;– Others have too little material for weld to be considered sound
– Therefore now moving on to weld preparation for two-piece shafts
Impact on schedule:• Shaft manufacture now ~3 weeks behind schedule• Can recover, but need to take care fixing two
pieces of shaft together:– Electron-beam weld ‘baseline’:– Alternatives are being considered:
• Pin, pin and weld, …– If Jason concludes that an alternative fixing scheme
should be adopted will present paper to TB for consideration
• There is risk here!– Well aware of need to install target in August shutdown
• Also well aware of continuing requirement to maintain high standards of quality control and tracking of manufacture