SC1R Cold Box PDR Mechanical Design SC1R Cold Box Preliminary Mechanical Design Review S. Yang Sunday, September 16, 2018

Outline SC1R 2K CBX Vessel - Overall Layout - Engineering Calculation - Cold compressor nozzle assembly procedure Internal Piping Layout Equipment Layout Platform Conceptual Design Entry Floor Grating Extension Interface Piping Summary SC1R PDR Mechanical Design

SC1R 2K CBX Vessel SC1R PDR Mechanical Design

SC1R 2K CBX Vessel (contd) CC3 CC4 CC2 CC5 CC1 SC1R PDR Mechanical Design

SC1R 2K CBX Vessel (contd) Minimum Thickness of the Shell Calculation Under External Pressure per UG-28 Vessel - SA 516 Gr. 70 Dv - OD, in 126 Lv - design length, in 138 tdr - required minimum thickness, in 0.42 Lv / Dv 1.10 Dv/ tdr 300 Factor A 2.50E-04 Subpart 3, Section II, Part D Factor B 3500 FIG. CS-2, Subpart 3, Section II, Part D Pa = 4*B*tdr/(3*D) Pa - calculated value of maximum allowable external pressure 15.6 YES Torispherical Head Thickness Cal per UG-33 Torispherical Heads Thickness Cal - UG-33 Pressure on Convex Side - SA516 Gr. 70 UG-33 1a method P - pressure 24.5 psi UG-33 1a E - joint efficiency 1 L - inside crown radius 126 in S - allowable stress 2.00E+04 t - the minimum thickness (=0.885PL/(SE-0.1P) 0.0684 UG-32 e UG-33 1e method t - minimum thickness 0.230 A = 0.125/(R/t) 4.60E-04 Factor B 6.20E+03 Pa = 4*B*tdr/(3*D) 15.1 Pa - calculated value of maximum allowable external pressure SC1R PDR Mechanical Design

SC1R 2K CBX Vessel (contd) The minimum thickness of the nozzle on the bottom torispherical head cal - SA304/304L SS - UG-45 Dn - OD of opening , in 30.1 Ln - design length, in 120 tnr = ta 0.180 Ln / Dn 3.99 Dn / tnr 167 Factor A 1.40E-04 Subpart 3, Section II, Part D Factor B NA Pa = 2*A*E/(3*(Do/t) For values of A falling to the left of the applicable material / temperature line E - Modulus of elasticity, psi 2.80E+07 Pa - calculated value of maximum allowable external pressure 15.6 YES tb1, in UG-45 tb2, in 0.1 tb3, in 0.328 Table UG-45 tb, in 0.068 tug-45 - minimum wall thickness of nozzle necks, in SC1R PDR Mechanical Design

SC1R 2K CBX Vessel (contd) UG-37 Reinforcement area calculation - Bottom Head Opening tr= 0.23 inches trn= 0.18 F= 1 Sv= 20000 psi Sn1= fr1 = Sn or Sp / Sv for nozzle wall inserted through the vessel wall fr2 = fr3 = E1 = 0.7 joint efficienty obtained from Talbe UW-12 t= 0.5 specified torispherical wall thickness   30" nozzle opening diameter of opening d= 30.00 wall thickness of nozzle tn= 0.31 required nozzle thickness trn= A= 3.45 UG-37 d(1) A1 from 1st equation is: 3.60 A1 from 2nd equation is: 0.19 larger A1 from above two = A2 from 1st equation is: 0.33 A2 from 2nd equation is: 0.21 smaller A2 from above two = A3 from 2nd equation is: 0.49 Nozzle inward/outward weld size = 0.00 A41= 0.000 A1+A2+A3 +A41 = 4.29 A1+A2+A3 +A41 >A? Yes Reinforcement is NOT required. SC1R PDR Mechanical Design

Cold Compressor Nozzle Assembly On the bench, weld the CC casing mounting plate to the ¾” thick adapter ring by using 1/8” throat fillet weld On the bench, weld the nozzle sleeve to the ¾ thk adapter ring by using full penetration weld SC1R PDR Mechanical Design

Cold Compressor Nozzle Assembly (contd) Place the top head weldment on a stand and be leveled. Align the casing assembly to the top head. Tack weld first to make sure it is perfectly aligned then perform the full penetration weld to the thickness of the nozzle. Will learn from the FRIB project about the generated moisture around the cold compressor. There are several options to handle the moisture depending on how much it will be. SC1R PDR Mechanical Design

Internal Piping Overview There are flow straighteners to CC2-CC5 inlet flow nozzles to remove circular flow. CC1 inlet is not required. A circular pipe will be inserted into the bellows to prevent the pressure drop through bellows. Piping flexibility and supports will be addressed at the FDR. There is enough room to access to the critical components, such as TDs, and these components can be reached easily. SC1R PDR Mechanical Design

Trunk – HX – CC1 Inlet HX is supported by frame through four ½” OD thread rods. The frame can be used to support the pipe if needed and to access critical components. The heat load through four threaded rods is 1.7W. G10 spacers will be used to reduce the heat load. 4K Supply to LINAC Bellows HX Bypass CV 4K Supply to LINAC CV HX 4K Supply from 4K CBX LN2 Return Thermal Shield LN2 Supply 2K Return from LINAC Cryogenic transition joint provided by vendor SC1R PDR Mechanical Design

Trunk – HX – CC1 Inlet Threaded rods are strong enough to take the maximum thrust force of 6000 lbf from the bellows along with a delta pressure of 60 psi plus the weight of the HX. Bellows is added between the HX and CC1 inlet nozzle to take care of the thermal contraction of the section between the mounting plate on the CC1 and the angle bar on the HX. Bellows ½” OD thread rod Inside sliding 8” pipe SC1R PDR Mechanical Design

CC1 Outlet to CC5 Inlet Spools CC2 Inlet – CC1 Outlet CC3 Inlet – CC2 Outlet CC3 Outlet – CC4 Inlet CC5 Inlet – CC4 Outlet SC1R PDR Mechanical Design

CC5 Outlet Top View Isometric View First Discharge CV Second Discharge CV Bypass Tee To Relief Valve Thermal Relief Top View Isometric View SC1R PDR Mechanical Design

Equipment Layout - Concept North SC1R PDR Mechanical Design

Equipment Layout – Concept (contd) North 42” between the front of the cabinet and the conductive surface is required for 480VAC enclosure. SC1R PDR Mechanical Design

SC1R Platform – Conceptual Design SC1R PDR Overview

Entry Floor Grating Extension - Concept SC1R PDR Mechanical Design

Interface Piping Guard Vacuum 3 ATM Supply Recovery Suction SC1R PDR Mechanical Design

Summary The vacuum vessel is preliminarily designed per ASME VIII Div. 1 and 2. The overall dimensions of the new vessel don’t require big modification of the building for installation. FEA will be performed according to the Part 5 DESIGN BY ANALYSIS REQUIREMENTS, ASME VIII Div. 2 for normal operation mode using commercial software ANSYS 17.2. Internal piping is designed per ASME B31.3. There is plenty room for access to the critical components. Piping flexibility analysis will be performed using the commercial software Bentley AutoPIPE for both the transportation and operation modes. The cold compressors can be taken out of the vessel from the top head. Interface piping has been identified and tie-ins have been marked. The platform and grating conceptual design are well developed. SC1R PDR Mechanical Design

Thank You ! Sunday, September 16, 2018