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Safety issues, AfA/TÜV

Safety issues, AfA/TÜV. First meeting with AfA (Amt für Arbeitsschutz) 2-July-04 Druckbehälterklassifizierung der XFEL-Cryomodule No problems expected But: Niobium is not a qualified material for cold temperature (mechanical properties)

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Safety issues, AfA/TÜV

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  1. Safety issues, AfA/TÜV • First meeting with AfA (Amt für Arbeitsschutz) • 2-July-04 • Druckbehälterklassifizierung der XFEL-Cryomodule • No problems expected • But: • Niobium is not a qualified material for cold temperature (mechanical properties) • This can be mitigated by arguing that the Ti-Vessel and the Cryostat are the safety containers • First meeting with TÜV-Nord • 27-Sep-04 • Introduction for the TÜV to propose a procedure for approval for • CrNi-welding 2K • Ti-Vessel weldings • …. Lutz Lilje DESY -MPY-

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