R ules for Construction of Nuclear Facility Components 2015 ASME Boiler and Pressure Vessel Code An International Code Div ision — Su bs e c t i o n N C Class Comp on en ts This copy downloaded on 2015-07-14 21:37:05 -0500 by authorized user logan ahlstrom SECTION III Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc (www.techstreet.com) ASME B PVC.III.1.NC -2015 No fu 2015 ASME Boiler & Pressure Vessel Code 2015 Edition July 1, 2015 III Division - Subsection NC Class Components ASME Boiler and Pressure Vessel Committee on Nuclear Power Two Park Avenue • New York, NY • 10016 USA This copy downloaded on 2015-07-14 21:37:05 -0500 by authorized user logan ahlstrom RULES FOR CONSTRUCTION OF NUCLEAR FACILITY COMPONENTS Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc (www.techstreet.com) AN INTERNATIONAL CODE No fu This international code or standard was developed under procedures accredited as meeting the criteria for American National Standards and it is an American National Standard The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate The proposed code or standard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assume any such liability Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME procedures and policies, which precludes the issuance of interpretations by individuals The endnotes and preamble in this document (if any) are part of this American National Standard ASME collective membership mark Certification Mark “ASME” is the trademark of The American Society of Mechanical Engineers No part of this document may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher Library of Congress Catalog Card Number: 56-3934 Printed in the United States of America Adopted by the Council of The American Society of Mechanical Engineers, 1914; latest edition 2015 The American Society of Mechanical Engineers Two Park Avenue, New York, NY 10016-5990 Copyright © 2015 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All rights reserved This copy downloaded on 2015-07-14 21:37:05 -0500 by authorized user logan ahlstrom The above ASME symbol is registered in the U.S Patent Office Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc (www.techstreet.com) Date of Issuance: July 1, 2015 No fu List of Sections Foreword Statement of Policy on the Use of the Certification Mark and Code Authorization in Advertising Statement of Policy on the Use of ASME Marking to Identify Manufactured Items Submittal of Technical Inquiries to the Boiler and Pressure Vessel Standards Committees Personnel Organization of Section III Summary of Changes List of Changes in Record Number Order Cross-Referencing and Stylistic Changes in the Boiler and Pressure Vessel Code xii xiv xvi xvi xvii xix xxxvi xxxix xlii xliii Introduction Scope Temperature Limits Boundaries of Jurisdiction Applicable to This Subsection 1 1 Article NC-2000 NC-2100 NC-2110 NC-2120 NC-2130 NC-2140 NC-2150 NC-2160 NC-2170 NC-2180 NC-2190 NC-2200 NC-2210 NC-2220 Material General Requirements for Material Scope of Principal Terms Employed Pressure-Retaining Material Certification of Material Welding Materials Material Identification Deterioration of Material in Service Heat Treatment to Enhance Impact Properties Procedures for Heat Treatment of Material Nonpressure‐Retaining Material Material Test Coupons and Specimens for Ferritic Steel Material Heat Treatment Requirements Procedure for Obtaining Test Coupons and Specimens for Quenched and Tempered Material Fracture Toughness Requirements for Material Material to Be Impact Tested Impact Test Procedures Test Requirements and Acceptance Standards Number of Impact Tests Required Retests Calibration of Instruments and Equipment Welding Material General Requirements Required Tests Weld Metal Tests Storage and Handling of Welding Material Examination and Repair of Pressure-Retaining Material Pressure-Retaining Material Examination and Repair of Plate Examination and Repair of Forgings and Bars Examination and Repair of Seamless and Welded (Without Filler Metal) Tubular Products and Fittings Examination and Repair of Tubular Products and Fittings Welded With Filler Metal 6 6 8 8 8 9 NC-2300 NC-2310 NC-2320 NC-2330 NC-2340 NC-2350 NC-2360 NC-2400 NC-2410 NC-2420 NC-2430 NC-2440 NC-2500 NC-2510 NC-2530 NC-2540 NC-2550 NC-2560 iii 11 11 12 13 13 15 15 15 15 15 17 19 19 19 19 21 22 24 This copy downloaded on 2015-07-14 21:37:05 -0500 by authorized user logan ahlstrom Article NC-1000 NC-1100 NC-1120 NC-1130 Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc (www.techstreet.com) TABLE OF CONTENTS No fu 24 30 30 30 30 Article NC-3000 NC-3100 NC-3110 NC-3120 NC-3130 NC-3200 NC-3210 NC-3220 NC-3230 NC-3240 NC-3250 NC-3260 NC-3300 NC-3310 NC-3320 NC-3330 NC-3350 NC-3360 NC-3400 NC-3410 NC-3420 NC-3430 NC-3440 NC-3450 NC-3500 NC-3510 NC-3520 NC-3530 NC-3590 NC-3600 NC-3610 NC-3620 NC-3640 NC-3650 NC-3660 NC-3670 NC-3690 NC-3700 NC-3720 NC-3800 NC-3810 NC-3820 NC-3830 NC-3840 NC-3850 NC-3860 Design General Design Loading Criteria Special Considerations General Design Rules Alternative Design Rules for Vessels General Requirements Design Considerations Openings and Their Reinforcement Vessels Under External Pressure Welded Joints Special Vessel Requirements Vessel Design General Requirements Design Considerations Openings and Reinforcement Design of Welded Construction Special Vessel Requirements Pump Design General Requirements for Centrifugal Pumps Definitions Design Requirements for Centrifugal Pumps Design of Specific Pump Types Design of Class Reciprocating Pumps Valve Design General Requirements Level B, C, and D Service Limits General Rules Pressure Relief Valve Design Piping Design General Requirements Design Considerations Pressure Design of Piping Products Analysis of Piping Designs Design of Welds Special Piping Requirements Dimensional Requirements for Piping Products Electrical and Mechanical Penetration Assemblies Design Rules Design of Atmospheric Storage Tanks General Requirements Design Considerations Bottom Design Shell Design Roof Design Tank Connections and Appurtenances 31 31 31 32 32 36 36 44 53 62 63 66 67 67 68 82 89 95 98 98 99 99 101 114 114 114 118 120 121 125 125 128 128 145 149 150 161 161 161 161 161 162 162 162 163 167 iv This copy downloaded on 2015-07-14 21:37:05 -0500 by authorized user logan ahlstrom Examination and Repair of Statically and Centrifugally Cast Products Examination of Bolts, Studs, and Nuts Material Organizations’ Quality System Programs Documentation and Maintenance of Quality System Programs Dimensional Standards Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc (www.techstreet.com) NC-2570 NC-2580 NC-2600 NC-2610 NC-2700 No fu 167 167 173 178 Article NC-4000 NC-4100 NC-4110 NC-4120 NC-4130 NC-4200 NC-4210 NC-4220 NC-4230 NC-4240 NC-4250 NC-4260 NC-4300 NC-4310 NC-4320 NC-4330 NC-4350 NC-4360 NC-4400 NC-4410 NC-4420 NC-4430 NC-4450 NC-4500 NC-4510 NC-4520 NC-4530 NC-4540 NC-4600 NC-4610 NC-4620 NC-4630 NC-4650 NC-4660 NC-4700 NC-4710 NC-4720 NC-4730 NC-4800 NC-4810 Fabrication and Installation General Requirements Introduction Certification of Materials and Fabrication by Component Certificate Holder Repair of Material Forming, Cutting, and Aligning Cutting, Forming, and Bending Forming Tolerances Fitting and Aligning Requirements for Weld Joints in Components Welding End Transitions — Maximum Envelope Special Requirements for Weld Joints in Vessels Designed to NC-3200 Welding Qualifications General Requirements Welding Qualifications, Records, and Identifying Stamps General Requirements for Welding Procedure Qualification Tests Special Qualification Requirements for Tube‐to‐Tubesheet Welds Qualification Requirements for Welding Specially Designed Welded Seals Rules Governing Making, Examining, and Repairing Welds Precautions to Be Taken Before Welding Rules for Making Welded Joints Welding of Attachments Repair of Weld Metal Defects Brazing Rules for Brazing Brazing Qualification Requirements Fitting and Aligning of Parts to Be Brazed Examination of Brazed Joints Heat Treatment Welding Preheat Requirements Postweld Heat Treatment Heat Treatment of Welds Other Than the Final Postweld Heat Treatment Heat Treatment After Bending or Forming for Pipe, Pumps, and Valves Heat Treatment of Electroslag Welds Mechanical Joints Bolting and Threading Bolting Flanged Joints Electrical and Mechanical Penetration Assemblies Expansion Joints Fabrication and Installation Rules for Bellows Expansion Joints 206 206 206 206 207 207 207 208 211 212 228 228 232 232 235 237 240 240 241 241 241 243 246 247 247 247 248 248 249 249 249 254 254 255 255 255 255 255 255 255 Article NC-5000 NC-5100 NC-5110 NC-5120 NC-5130 NC-5140 Examination General Requirements for Examination Procedure, Qualification, and Evaluation Time of Examination of Welds and Weld Metal Cladding Examination of Weld Edge Preparation Surfaces Examination of Openings Cut in Vessels Designed to NC-3200 257 257 257 257 258 258 v 189 This copy downloaded on 2015-07-14 21:37:05 -0500 by authorized user logan ahlstrom Zero psi to 15 psi (0 kPa to 100 kPa) Storage Tank Design General Requirements Design Considerations Design Procedure Alternate Rules for Axial Compressive Membrane Stresses in the Cylindrical Walls of psi to 15 psi (0 kPa to 100 kPa) Storage Tanks Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc (www.techstreet.com) NC-3900 NC-3910 NC-3920 NC-3930 NC-3940 No fu 259 259 259 259 260 260 260 261 261 261 262 262 262 262 263 263 263 263 263 264 264 264 Article NC-6000 NC-6100 NC-6110 NC-6120 NC-6200 NC-6210 NC-6220 NC-6230 NC-6240 NC-6300 NC-6310 NC-6320 NC-6330 NC-6400 NC-6410 NC-6500 NC-6510 NC-6520 NC-6530 NC-6600 NC-6610 NC-6620 NC-6900 NC-6910 NC-6920 NC-6930 Testing General Requirements Pressure Testing of Components, Appurtenances, and Systems Preparation for Testing Hydrostatic Tests Hydrostatic Test Procedure Hydrostatic Test Pressure Requirements Bellows Expansion Joints Provision for Embedded or Inaccessible Welded Joints in Piping Pneumatic Tests Pneumatic Testing Procedures Pneumatic Test Pressure Requirements Bellows Expansion Joints Pressure Test Gages Requirements for Pressure Test Gages Atmospheric and psi to 15 psi (0 kPa to 100 kPa) Storage Tanks Testing of Atmospheric Storage Tanks Testing of psi to 15 psi (0 kPa to 100 kPa) Storage Tanks Test Gages Special Test Pressure Situations Components Designed for External Pressure Pressure Testing of Combination Units Proof Tests to Establish Design Pressure General Requirements Procedures Procedure for Components Having Chambers of Special Shape Subject to Collapse 265 265 265 266 266 266 267 267 267 268 268 268 268 268 268 269 269 269 270 270 270 271 271 271 272 275 NC-5220 vi 259 259 This copy downloaded on 2015-07-14 21:37:05 -0500 by authorized user logan ahlstrom NC-5230 NC-5240 NC-5250 NC-5260 NC-5270 NC-5280 NC-5300 NC-5320 NC-5330 NC-5340 NC-5350 NC-5360 NC-5380 NC-5400 NC-5410 NC-5500 NC-5510 NC-5520 NC-5530 NC-5700 NC-5720 Examination of Welds Category A Vessel Welded Joints and Longitudinal Welded Joints in Piping, Pumps, and Valves Category B Vessel Welded Joints and Circumferential Welded Joints in Piping, Pumps, and Valves Category C Vessel Welded Joints and Similar Welded Joints in Other Components Category D Vessel Welded Joints and Similar Welded Joints in Other Components Examination of Welds for Vessels Designed to NC-3200 Fillet, Partial Penetration, Socket, and Attachment Welds Special Welds Weld Joints in Storage Tanks Acceptance Standards Radiographic Acceptance Standards Ultrasonic Acceptance Standards Magnetic Particle Acceptance Standards Liquid Penetrant Acceptance Standards Visual Acceptance Standards for Brazed Joints Gas and Bubble Formation Testing Final Examination of Components Examination After Pressure Testing Qualifications and Certification of Nondestructive Examination Personnel General Requirements Personnel Qualification, Certification, and Verification Records Examination Requirements for Expansion Joints Bellows Expansion Joints Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc (www.techstreet.com) NC-5200 NC-5210 No fu 276 276 276 276 276 276 277 277 277 278 278 278 278 278 279 279 279 279 280 280 280 280 280 280 282 282 283 284 284 285 285 285 286 286 286 286 291 293 294 296 296 297 297 297 Article NC-8000 NC-8100 Nameplates, Stamping With Certification Mark, and Reports General Requirements 298 298 FIGURES NC-1132.2-1 NC-1132.2-2 NC-1132.2-3 NC-2433.1-1 NC-2575.2-1 Attachments in the Component Support Load Path That Do Not Perform a Pressure-Retaining Function Attachments That Do Not Perform a Pressure-Retaining Function and Are Not in the Component Support Load Path (Nonstructural Attachments) Attachments That Perform a Pressure-Retaining Function Weld Metal Delta Ferrite Content Typical Pressure-Retaining Parts of Pumps and Valves vii 20 28 This copy downloaded on 2015-07-14 21:37:05 -0500 by authorized user logan ahlstrom Overpressure Protection General Requirements Scope Integrated Overpressure Protection Verification of the Operation of Reclosing Pressure Relief Devices Installation Acceptable Pressure Relief Devices Unacceptable Pressure Relief Devices Permitted Use of Pressure Relief Devices Overpressure Protection Report Responsibility for Report Content of Report Certification of Report Review of Report After Installation Filing of Report Relieving Capacity Requirements Expected System Pressure Transient Conditions Unexpected System Excess Pressure Transient Conditions System Faulted Conditions Set Pressures of Pressure Relief Devices Set Pressure Limitations for Expected System Pressure Transient Conditions Set Pressure Limitation for Unexpected System Excess Pressure Transient Conditions Operating and Design Requirements for Pressure and Vacuum Relief Valves Safety, Safety Relief, and Relief Valves Pilot-Operated Pressure Relief Valves Power-Actuated Pressure Relief Valves Safety Valves With Auxiliary Actuating Devices Vacuum Relief Valves Alternative Test Media Nonreclosing Pressure Relief Devices Rupture Disk Devices Installation Requirements Certification Responsibility for Certification of Pressure and Vacuum Relief Valves Responsibility for Certification of Nonreclosing Pressure Relief Devices Capacity Certification of Pressure Relief Valves — Compressible Fluids Capacity Certification of Pressure Relief Valves — Incompressible Fluids Capacity Certification of Vacuum Relief Valves Capacity Determination of Rupture Disk Devices Marking, Stamping With Certification Mark, and Data Reports Pressure and Vacuum Relief Valves Rupture Disk Devices Pressure Relief Valve in Combination With Rupture Disk Devices Certificate of Authorization to Use Certification Mark Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc (www.techstreet.com) Article NC-7000 NC-7100 NC-7110 NC-7120 NC-7130 NC-7140 NC-7150 NC-7160 NC-7170 NC-7200 NC-7210 NC-7220 NC-7230 NC-7240 NC-7250 NC-7300 NC-7310 NC-7320 NC-7330 NC-7400 NC-7410 NC-7420 NC-7500 NC-7510 NC-7520 NC-7530 NC-7540 NC-7550 NC-7560 NC-7600 NC-7610 NC-7620 NC-7700 NC-7710 NC-7720 NC-7730 NC-7740 NC-7750 NC-7760 NC-7800 NC-7810 NC-7820 NC-7830 NC-7840 No fu NC-3224.13(b)(6)(-a)-1 NC-3224.13(b)(6)(-b)-1 NC-3224.13(c)(6)(-a)-1 NC-3224.13(c)(6)(-b)-1 NC-3224.13(d)-1 NC-3225-1 NC-3225-2 NC-3225-3 NC-3234.2(a)-1 NC-3239.1(b)-1 NC-3239.4-1 NC-3324.2-1 NC-3324.11(a)(6)-1 NC-3325-1 NC-3326.1-1 NC-3329(b)-1 NC-3329(b)-2 NC-3329(b)-3 NC-3329(d)-1 NC-3329(d)-2 NC-3329(g)-1 viii 37 46 48 49 50 51 52 54 55 56 58 60 61 71 76 78 79 81 81 82 82 83 84 85 88 89 89 90 91 94 96 99 99 101 101 102 102 103 103 104 105 105 105 105 106 106 107 107 108 110 110 111 This copy downloaded on 2015-07-14 21:37:05 -0500 by authorized user logan ahlstrom NC-3332.2-1 NC-3335(b)-1 NC-3335.2-1 NC-3335.3(b)-1 NC-3351-1 NC-3352-1 NC-3358.1(a)-1 NC-3361-1 NC-3423-1 NC-3423-2 NC-3433.4-1 NC-3441.1-1 NC-3441.1-2 NC-3441.1(a)-1 NC-3441.2-1 NC-3441.3-1 NC-3441.3-2 NC-3441.4(a)-1 NC-3441.5-1 NC-3441.6(a)-1 NC-3441.7(a)-1 NC-3441.7(a)-2 NC-3441.7(c)-1 NC-3441.7(c)(2)-1 NC-3441.7(c)(2)-2 NC-3441.7(c)(2)-3 NC-3441.8-1 NC-3441.8-2 NC-3441.9-1 Chart for Determining Wall Thickness of Tubes Under External Pressure Design Curves for Torispherical Heads and 2:1 Ellipsoidal Heads for Use With NC-3224.8 and NC-3224.6 Inherent Reinforcement for Large End of Cone–Cylinder Junction Values for Q for Large End of Cone–Cylinder Junction Inherent Reinforcement for Small End of Cone–Cylinder Junction Values for Q for Small End of Cone–Cylinder Junction Cone–Cylinder Junction at Small End Treated as Opening Typical Flat Heads and Supported and Unsupported Tubesheets With Hubs Some Acceptable Types of Unstayed Flat Heads and Covers Attachment of Pressure Parts to Plates to Form a Corner Joint Nozzle Nomenclature and Dimensions Examples of Acceptable Transition Details Limits of Reinforcing Zone Principal Dimensions of Typical Heads Large Head Openings, Reverse Curve, and Conical Shell Reducer Sections Some Acceptable Types of Unstayed Flat Heads and Covers Spherically Dished Covers With Bolting Flanges Example of Tube Spacing With Pitch of Holes Equal in Every Row Example of Tube Spacing With Pitch of Holes Unequal in Every Second Row Example of Tube Spacing With Pitch Holes Varying in Every Second and Third Row Example of Tube Spacing With Tube Holes on Diagonal Lines Diagram for Determining the Efficiency of Longitudinal and Diagonal Ligaments Between Openings in Cylindrical Shells Diagram for Determining Equivalent Longitudinal Efficiency of Diagonal Ligaments Chart for Determining the Value of F Some Representative Configurations Describing the t e Reinforcement Dimension Arrangement of Multiple Openings Minimum Depth for Flange of Flued Openings Welded Joint Locations Typical of Categories A, B, C, and D Typical Butt Joints Heads Attached to Shells Butt Welding of Sections of Unequal Thicknesses Typical Single Volute Casing Typical Double Volute Casing Minimum Tangential Inlet and Outlet Wall Thickness Type A Pump Type À Pump Type A Pump Type B Pump Type C Pump Type C Pump Type D Pump Type E Pump Type F Pump Axially Split Casing, Volute Pump, Type G Axially Split Casing, Volute Pump, Type G Axially Split Casing, Volute Pump, Type G Typical Section of Type G Pumps Typical Section of Type G Pumps Typical Loads on Type G Pumps Longitudinal Section Through Type H Pump Transverse Section Through Type H Pump Type K Pump Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc (www.techstreet.com) NC-3133.8-1 NC-3224.6-1 No fu NC-3643.3(c)(1)-1 NC-3643.3(c)(1)-2 NC-3643.4(a)-1 NC-3647.2-1 NC-3653.3-1 NC-3673.2(b)-2 NC-3861-1 NC-3862(a)-1 NC-3862(a)-2 NC-3863-1 NC-3922.1-1 NC-3922.1-2 NC-3932.1-1 NC-3933.4(a)-1 NC-3933.5(d)-1 NC-3944-1 NC-3944-2 NC-3944-2M NC-3944-3 NC-3944-3M NC-3944-4 NC-3944-4M NC-3944-5 ix 112 115 116 119 122 123 125 129 133 134 135 136 138 141 146 159 168 169 170 171 175 176 182 186 188 192 193 194 195 196 197 198 199 200 This copy downloaded on 2015-07-14 21:37:05 -0500 by authorized user logan ahlstrom NC-3944-1M Type K Pump Type N Pump Horizontal Single‐Acting Power Pump Liquid Ends Typical Sections of Valve Bodies Typical Pressure Relief Devices Typical Pressure Relief Devices Valve Nozzle Examples of Reversing and Nonreversing Dynamic Loads Typical Welded Branch Connections Typical Right Angle Branch Connections Made Using a Fillet Weld or a Partial Penetration Weld Reinforcement of Branch Connections Some Representative Configurations Describing the t e Reinforcement Dimensions Reinforced Extruded Outlets Types of Permanent Blanks Reducing or Full Outlet Branch Connections or Tees Branch Connection Nomenclature Roof Manholes Flanged Roof Nozzles Screwed or Socket Weld Roof Nozzles Typical Welded Bottom Outlet Elbow Biaxial Stress Chart for Combined Tension and Compression, 30,000 psi to 38,000 psi (205 MPa to 260 MPa) Yield Strength Steels Reduction of Design Stresses Required to Allow for Biaxial Stresses of Opposite Sign Some Typical Free Body Diagrams for Certain Shapes of Tanks Compression Ring Region Permissible Details of Compression Ring Design Factor Times Allowable Axial Membrane Compressive Stress Versus Radius Over Thickness for Ferrous Materials With Yield Strengths of 25 ksi at Temperatures ≤ 300°F Design Factor Times Allowable Axial Membrane Compressive Stress Versus Radius Over Thickness for Ferrous Materials With Yield Strengths of 175 MPa at Temperatures ≤ 150°C Design Factor Times Allowable Axial Membrane Compressive Stress Versus Radius Over Thickness for Ferrous Materials With Yield Strengths of 30 ksi at Temperatures ≤ 300°F Design Factor Times Allowable Axial Membrane Compressive Stress Versus Radius Over Thickness for Ferrous Materials With Yield Strengths of 210 MPa at Temperatures ≤ 150°C Design Factor Times Allowable Axial Membrane Compressive Stress Versus Radius Over Thickness for Ferrous Materials With Yield Strengths of 35 ksi at Temperatures ≤ 300°F Design Factor Times Allowable Axial Membrane Compressive Stress Versus Radius Over Thickness for Ferrous Materials With Yield Strengths of 245 MPa at Temperatures ≤ 150°C Design Factor Times Allowable Axial Membrane Compressive Stress Versus Radius Over Thickness for Ferrous Materials With Yield Strengths of 40 ksi at Temperatures ≤ 300°F Design Factor Times Allowable Axial Membrane Compressive Stress Versus Radius Over Thickness for Ferrous Materials With Yield Strengths of 280 MPa at Temperatures ≤ 150°C Design Factor Times Allowable Axial Membrane Compressive Stress Versus Radius Over Thickness for Ferrous Materials With Yield Strengths of 45 ksi at Temperatures ≤ 300°F Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc (www.techstreet.com) NC-3441.9-2 NC-3441.10-1 NC-3451(a)-1 NC-3521-1 NC-3591.1-1 NC-3591.1-2 NC-3595.3-1 NC-3622-1 NC-3643.2(b)-1 NC-3643.2(b)-2 No fu ... Accordance With NC- 23 32. 3 x 20 1 20 2 20 3 20 5 20 9 21 0 21 1 21 2 21 4 21 5 21 6 21 7 21 8 21 9 22 0 22 1 22 2 22 3 22 4 22 5 22 6 22 6 22 7 22 9 23 0 23 1 23 1 23 3 23 4 23 5 23 6 24 4 24 5 24 6 24 8 25 6 25 6 29 0 29 5 12 ... 20 6 20 6 20 6 20 6 20 7 20 7 20 7 20 8 21 1 21 2 22 8 22 8 23 2 23 2 23 5 23 7 24 0 24 0 24 1 24 1 24 1 24 3 24 6 24 7 24 7 24 7 24 8 24 8 24 9 24 9 24 9 25 4 25 4 25 5 25 5 25 5 25 5 25 5 25 5 25 5 Article NC- 5000 NC- 5100 NC- 5110... Filler Metal 6 6 8 8 8 9 NC- 23 00 NC- 23 10 NC- 23 20 NC- 23 30 NC- 23 40 NC- 23 50 NC- 23 60 NC- 24 00 NC- 24 10 NC- 24 20 NC- 24 30 NC- 24 40 NC- 25 00 NC- 25 10 NC- 25 30 NC- 25 40 NC- 25 50 NC- 25 60 iii