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MERIT pre-installation review: Preliminary conclusions

MERIT pre-installation review: Preliminary conclusions. Fabich. Follow-up: Safety Review of mercury system. http://edms.cern.ch/document/754444/ Draft answer: http://cern.ch/merit/doc/HgSafetyReviewAnswer.htm Hot issues: Item 11: LEXAN cover on sump tank and as lid

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MERIT pre-installation review: Preliminary conclusions

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  1. MERIT pre-installation review:Preliminary conclusions Fabich

  2. Follow-up:Safety Review of mercury system http://edms.cern.ch/document/754444/ Draft answer: http://cern.ch/merit/doc/HgSafetyReviewAnswer.htm Hot issues: • Item 11: LEXAN cover on sump tank and as lid • Latest documentation on used materials and procedures is currently looked at.

  3. Follow-up:Cryogenics and solenoid review https://edms.cern.ch/file/710659/1/memorandum.pdf • Item 2: User’s notice. Yet now written procedures on installation and operation of the solenoid&cryogenics have been provided. • Cryogenics part by AT/ECR • Item 5: Results of non-destructive test (x-rays of welds) • Item 8: formal answer by collaboration is required.

  4. Pre-installation review • Installation in TT2A during PS2 run with beam possible. • Personnel radiation dose plan and access procedures need to be written. • The use of PU foam is currently investigated. • Safety valves of cryostat and vacuum jacket. • Maximum operating pressure of cryostat limited to 10 bar. Resolves a lot of issues. • A lot is dependent on the surface tests at build 180: leak test (warm and cold), condensation.

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