SNS BL-13B NPDGamma Experiment Hydrogen Supply to Cryogenic Target, Relief and Vent System Design Review April 7, 2010 C-156 9:00 10:30 PM
Hydrogen System Block Diagram Diagram of Major System Components 2 Managed by UT-Battelle
Hydrogen System Schematic 3 Managed by UT-Battelle
H 2 Cylinder Storage Cabinet Shared w/ BL-11A 4 Managed by UT-Battelle
BL-13 Cave w/shielding In-Place Vent Stack Cryo Coolers Vent Isolation Box 5 Managed by UT-Battelle
Overview Showing Target Vent from Cave to Vent Isolation Box and Vent Line Outside Building Vent Isolation Box Vent Stack Target Hydrogen Vent 6 Managed by UT-Battelle
Target Vent Going Over Beamstop Target Hydrogen Vent 7 Managed by UT-Battelle
Vent Isolation Box Just North of Cave Vent Isolation Box 8 Managed by UT-Battelle
Vent Isolation Box on Platform Outside Cave Above Vent Isolation Cabinet Vent Isolation Cabinet Vent Isolation Platform 9 Managed by UT-Battelle
Vent Isolation Box Internals Vacuum Turbo Pumps Box & Cabinet Vent Line Relief Vent Line Relief Valves and Rupture Discs 10 Managed by UT-Battelle
Vent Stack from Vent Isolation Box Leaving Building Box & Cabinet Vent Line Relief Vent Line 11 Managed by UT-Battelle
Hydrogen System Major Equipment HYDROGEN, ARGON, HELIUM GAS CYLINDERS TRANSFER TUBING GAS PANEL CABINET HYDROGEN FILL TUBE LH2 VESSEL / VACUUM CHAMBER 0.25-INCH x 0.035 WALL 1.5-INCH X 0.065 WALL DOUBLE WALL HYDROGEN VENT TUBING INNER HYDROGEN VENT TUBE 1.5-INCH X 0.065 WALL OUTER VACUUM / VENT TUBE 6.0-INCH X 0.083 WALL METAL BELLOWS VENT ISOLATION CABINET VENT ISOLATION BOX 10 NPS, Sch. 10 HYDROGEN VENTS TO ATMOSPHERE 6 NPS, Sch 5 & 8 NPS 12 Managed by UT-Battelle
Safety Considerations SEISMIC INTERACTION ( PC 0 OVER PC 2 ) DESIGN / CONFIGURATION CONTROL ACCIDENT MITIGATION OVERPRESSURE PROTECTION ARGON UTILIZATION HYDROGEN DEFLAGRATION / DETONATION LOSS OF VACUUM IN 6-INCH LINE RUPTURE OF 1.5-INCH LINE FIRE IN TARGET BUILDING MATERIAL EMBRITTLEMENT CRYOGENIC HYDROGEN 13 Managed by UT-Battelle
Codes and Standards DOE-STD-1020 DOE-STD-1021 ASME B 31.3, Process Piping ASME B 31.12-2008, Hydrogen Piping and Pipelines CGA S-1.3, Pressure Relief Device Standards-Part 3- Compressed Gas Stationary Storage Containers CGA G-5.5 2004, Hydrogen Vent Systems EJMA, Expansion Joint Manufacture Association 14 Managed by UT-Battelle
Design Loadings DEADWEIGHT SPANS PER MSS SP 69 NORMAL OPERATING PRESSURE POSTULATED OVERPRESSURE EVENTS THERMAL EXPANSION / CONTRACTION SEISMIC IBC-2007 PERFORMANCE CATEGORY 2 SITE CLASS D IMPORTANCE FACTOR = 1.5 WIND / TORNADO DEFLAGRATION / DETONATION THRUST LOADINGS BELLOWS VENT DISCHARGE 15 Managed by UT-Battelle
Hydrogen Vents to Atmosphere 6-INCH FROM VENT ISOLATION BOX 8-INCH FROM GAS PANEL CABINET & VENT ISOLATION CABINET WELDED VERSUS VICTAULIC AUSTENETIC STAINLESS ( TP 304 ) MATERIAL MINIMIZE ( L / D ) RATIO L / D > 60 BUT < 100 DEFLAGRATION L / D > 100 DETONATION DISCHARGE HEIGHT 10-FEET ABOVE GRADE TOP OF ROOF WIND / TORNADO / MISSLES LOW POINT DRAIN 16 Managed by UT-Battelle
H2 Bottle Rack Shared with BL-11A 17 Managed by UT-Battelle
ALLOWABLE WORKING PRESSURE LH2 VESSEL / MAIN VACUUM CHAMBER LH2 Vessel Internal pressure: (1) Cylindrical Shell Pint = 279 psi (2) Entrance Window Pint = 132 psi (3) Exit Window Pint = 207 psi External pressure: (1) Cylindrical Shell Pext = 81 psi (2) Entrance Window Pext = 16 psi (3) Exit Window Pext = 296 psi Main Vacuum Chamber Internal pressure: (1) Cylindrical Shell Pint = 399 psi (2) Entrance Window Pint = 32 psi (3) Exit Window Pint = 90 psi (4) Rectangular Box Pint = 99 psi External pressure: (1) Cylindrical Shell Pint = 134 psi (2) Entrance Window Pint = 134 psi (3) Exit Window Pint = 208 psi 18 Managed by UT-Battelle (4) Rectangular Box Pint = 99 psi
VICTAULIC COUPLING CAPACITY 19 Managed by UT-Battelle