SNS PPU CRYOMODULE - PowerPoint Presentation

SNS PPU CRYOMODULE PDR SNS PPU Cryomodule Vacuum Vessel Matt Marchlik Wednesday, February 272019 SNS PPU CRYOMODULE PDR SNS PPU Cryomodule Vacuum Vessel Matt Marchlik Wednesday, February 27 2019

Outline RequirementsDesignFabrication/Procurement methodologyRemaining TasksSummary 2

Requirements 3 Vacuum Vessel will be ASME stamped vessels with a MAWP of 25 PSIG Design pressures of 30 PSIG internal and 15 PSIG externalInterface with all necessary subsystems

Requirements Agreement between the labs defined in detail in “SNS PPU Cryomodule Pressure & Vacuum Systems” Power Point slides, by Gary Cheng, dated November 6, 2018 To meet ORNL requirements The End Can vacuum shell and Vacuum Vessel will be ASME stamped vessels with a MAWP of 25 PSIGDesign pressures of 30 PSIG internal and 15 PSIG external To meet JLab requirementsHelium vessels will be designed and built to the intent of the ASME BPVC pressure vessel codeFPC Vacuum top hats and bellows will be designed to the ASME BPVC but treated as JLab Category II vacuum componentsConsistent with the SNS HB Prototype and allows JLab to make the top hat bellows closure weld4

Design 5 The existing SNS drawings will be used for unchanged components JLab drawings will be created to capture any changesThis section primarily highlights any design changes

Design - Vacuum Vessel Weldment 6 Weldment304 SSComprised of the welded bodies that make up the pressure boundary and items welded to the boundaryOnly the vendor, a ASME BPVC code shop, may weld to the pressure boundary. All of these pieces, even the small brackets will be included in the weldment

Design - Vacuum Vessel Weldment 7 ISO250-K Ports x10 End FlangesStiffener Ringsx5JT Valve PortSupply EndCan Port Return EndCan PortLock Down Weld Padsx24Supply EndCan Mount Pad Return End Can Mount Pad FPC E xhaust Manifold Ports x4 Air Side FPC Ext. Mounts X4 sets FPC E xhaust Manifold Port Supports x3

Design - Vacuum Vessel Weldment 8 FPC Portsx4 Instrumentation Portsx4Pressure Manifold PortInterface Panel Mountsx4

Design - Vacuum Vessel A ssembly9 End flanges x2 Parallel plate PRV x2 Blanksx7WeldmentTie downsx24 Coupler top hats x4

Design – End Flange Weld 10 The original vessel end flange configuration closely matched that shown in sketch (11) of fig.2-4 of ASME BPVC VIII-I The configuration was changed to match that of sketch (4a) Radially and longitudinally self- fixturing to assist in arriving at desired tolerancesInternal circumferential weld contraction should have less impact on flange flatness than other configuration(11)(4a)Flange flatness, location and perpendicularity to shell axis will be GD&T controlled on the weldment drawing

Design – Vessel End Can Ports 11 Originally, the return end can port of the vac vessel had a significantly smaller ID than that of the end can elbow The vac vessel port ID has been opened up to match that of the return can elbowAllows much more flex/displacement during end can alignment Increased vessel port7.80 in IDOriginal vessel port6.36 in ID

Design – Vessel End Can Ports 12 Supply end can vessel port ID > elbow ID

Design – End Can Mounting 13 Pockets have been added to both of the end can mounting pads to receive the support mounts and allow compliance during installation/alignment of the end cans Tooling supports and aligns the ends cans. Support to pad welding is then completedThese are considered weld pads, do not make up the pressure boundary. Welded by JLAB during assembly Mounting pad Support MountEnd Can Support Arm

Design – End Can Mounting 14 +/- .21 in Lateral Adjustability +/- .13 in Vertical Adjustability +/- .13 inLateral Adjustability+/- 3∘Pitch Adjustability +/- 8 ∘ Yaw Adjustability

Design – End Flange Reinforcement 15 The warm to cold beam line modification outlined by K. Wilson requires the opening in the end flange to increase. The new opening of 6.1 in and reinforcement was shown to be acceptable per ASME BPVC VIII-I, UG-39 Reinforcement d/2

Design – Beamline to Vessel Flange 16 There were 20 bolts making up the beamline to vacuum vessel end flange joint A calculation per BPVC VIII-I, Mandatory Appendix 2 to determine the minimum required number of bolts The number of bolts has been reduced to 10 20 bolts 10 bolts

Procurement Vessel weldment along with corresponding flanges will be fabricated by an ASME BPVC “code shop”. SOW will reflect the existing SNS and JLab SOW. Fabrication plan/travelerMaterialsWelding WPSPQRDimensional verificationTestingLeakPressure Work site visitsCustomer visits/witnessingU-1Shipping17

Remaining DrawingsFinalize and review any new drawingsProcurementSOW PRPO 18

Summary Preliminary vessel design is in good shapeVessel interfaces with other subsystems have been verifiedExisting drawings have been reviewedDrawings for any design changes have been started Necessary calculations for proposed changes are completeProcurement methodology exists 19

Backups 20 End flange calculationsBeamline to Vacuum Bolt Number and Flange Stress Calculation

Backups 21 End Flange Calculations

Backups – End Flange Calcs 22

Backups – End Flange Reinforcement/Max Opening Calc 23

Backups – End Flange Reinforcement/Max Opening Calc 24

Backups – End Flange Reinforcement/Max Opening Calc 25

Backups – End Flange Reinforcement/Max Opening Calc 26

Backups – End Flange Reinforcement/Max Opening Calc 27

Backups – End Flange Reinforcement/Max Opening Calc 28

Backups 29 Beamline to Vacuum Bolt Number and Flange Stress Calculation

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