2013 ASME Boiler and Pressure Vessel CodeA N I N T E R N A T I O N A L C O D E

III Rules for Construction of Nuclear Facility Components

Division 1 — Subsection NFSupports

5/15/13 5:22 PM

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IIIRULES FOR CONSTRUCTIONOF NUCLEAR FACILITYCOMPONENTS

Division 1 - Subsection NF

SupportsASME Boiler and Pressure Vessel Committeeon Nuclear Power

AN INTERNATIONAL CODE

2013 ASME Boiler &Pressure Vessel Code2013 Edition July 1, 2013

Two Park Avenue • New York, NY • 10016 USA

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Date of Issuance: July 1, 2013

This international code or standard was developed under procedures accredited as meeting the criteria for Amer-ican National Standards and it is an American National Standard. The Standards Committee that approved the codeor standard was balanced to assure that individuals from competent and concerned interests have had an oppor-tunity to participate. The proposed code or standard was made available for public review and comment that pro-vides 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

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lished ASME procedures and policies, which precludes the issuance of interpretations by individuals.The endnotes in this document are part of this American National Standard.

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Library of Congress Catalog Card Number: 56-3934Printed in the United States of America

Adopted by the Council of The American Society of Mechanical Engineers, 1914; latest edition 2013.

The American Society of Mechanical EngineersTwo Park Avenue, New York, NY 10016-5990

Copyright © 2013 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERS

All rights reserved

TABLE OF CONTENTS

List of Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiiForeword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xStatement of Policy on the Use of the Certification Mark and Code Authorization in Advertising . . . . . . . . . . . . xiiStatement of Policy on the Use of ASME Marking to Identify Manufactured Items . . . . . . . . . . . . . . . . . . . . . . . . xiiSubmittal of Technical Inquiries to the Boiler and Pressure Vessel Standards Committees . . . . . . . . . . . . . . . . . xiiiPersonnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvOrganization of Section III . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxSummary of Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxiiiList of Changes in Record Number Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxvCross-Referencing and Stylistic Changes in the Boiler and Pressure Vessel Code . . . . . . . . . . . . . . . . . . . . . . . . . xxxvi

Article NF-1000 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1NF-1100 Scope and General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

NF-1110 Aspects of Construction Covered by These Rules . . . . . . . . . . . . . . . . . . . . 1NF-1120 Rules for Supports and Their Classification . . . . . . . . . . . . . . . . . . . . . . . . . 1NF-1130 Boundaries of Jurisdiction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

NF-1200 Types of Supports and Attachments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2NF-1210 Types of Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2NF-1230 Welding Between Types of Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8NF-1240 Attachments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Article NF-2000 Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9NF-2100 General Requirements for Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

NF-2110 Scope of Principal Terms Employed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9NF-2120 Support Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9NF-2130 Certification of Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10NF-2140 Welding Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11NF-2150 Material Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11NF-2160 Deterioration of Material in Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11NF-2170 Heat Treatment to Enhance Impact Properties . . . . . . . . . . . . . . . . . . . . . . 11NF-2180 Procedures for Heat Treatment of Material . . . . . . . . . . . . . . . . . . . . . . . . . 11

NF-2200 Material Test Coupons and Specimens for Ferritic Steel Material . . . . . . 11NF-2210 Heat Treatment Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11NF-2220 Procedure for Obtaining Test Coupons and Specimens for Quenched and

Tempered Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12NF-2300 Fracture Toughness Requirements for Material . . . . . . . . . . . . . . . . . . . . . 13

NF-2310 Material to Be Impact Tested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13NF-2320 Impact Test Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14NF-2330 Test Requirements and Acceptance Standards . . . . . . . . . . . . . . . . . . . . . . 16NF-2340 Number of Impact Tests Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17NF-2350 Retests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18NF-2360 Calibration of Instruments and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . 21

NF-2400 Welding Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21NF-2410 General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21NF-2420 Required Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21NF-2430 Weld Metal Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22NF-2440 Storage and Handling of Welding Material . . . . . . . . . . . . . . . . . . . . . . . . . 25

NF-2500 Examination and Repair of Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25NF-2510 Examination and Repair of Material Other Than Bolting . . . . . . . . . . . . . . 25NF-2520 Required Examination and Acceptance Standards for Class 1 Springs . . 25

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NF-2530 Required Examination and Acceptance Standards for Coiled Wire RopeUsed As a Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

NF-2580 Examination of Bolting Material and Rods . . . . . . . . . . . . . . . . . . . . . . . . . 26NF-2600 Material Manufacturer’s Quality System Programs . . . . . . . . . . . . . . . . . . . 26NF-2610 Documentation and Maintenance of Quality System Programs . . . . . . . . . 26

Article NF-3000 Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27NF-3100 General Design Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27NF-3110 Loading Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27NF-3120 Design Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27NF-3130 General Design Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29NF-3140 General Design Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

NF-3200 Design Rules for Plate‐ and Shell‐Type Supports . . . . . . . . . . . . . . . . . . . . 31NF-3210 General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31NF-3220 Design by Analysis for Class 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31NF-3250 Design by Analysis for Class 2 and MC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37NF-3260 Design by Analysis for Class 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40NF-3270 Experimental Stress Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40NF-3280 Design by Load Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

NF-3300 Design Rules for Linear‐Type Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42NF-3310 General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42NF-3320 Design by Linear Elastic Analysis for Class 1 . . . . . . . . . . . . . . . . . . . . . . . 45NF-3330 High Cycle Fatigue Design for Class 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67NF-3340 Limit Analysis Design for Class 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67NF-3350 Design by Analysis for Class 2 and MC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76NF-3360 Design by Analysis for Class 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76NF-3370 Experimental Stress Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76NF-3380 Design by Load Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

NF-3400 Design Rules for Standard Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77NF-3410 General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77NF-3420 Design by Analysis for Class 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78NF-3450 Design by Analysis for Class 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80NF-3460 Design by Analysis for Class 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80NF-3470 Design by Experimental Stress Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . 80NF-3480 Procedure for Load Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

NF-3500 Design Rules for Component Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80NF-3510 General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80NF-3520 Design by Analysis for Class 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80NF-3550 Design by Analysis for Class 2, 3, and MC . . . . . . . . . . . . . . . . . . . . . . . . . . 80NF-3570 Experimental Stress Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81NF-3580 Design by Load Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

NF-3600 Design Rules for Piping Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81NF-3610 General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81NF-3620 Design by Analysis for Class 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82NF-3650 Design by Analysis for Class 2 and 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82NF-3670 Experimental Stress Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83NF-3680 Design by Load Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Article NF-4000 Fabrication and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84NF-4100 General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84NF-4110 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84NF-4120 Certification of Materials and Fabrication by Support Certificate Holder 84NF-4130 Repair of Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

NF-4200 Forming, Fitting, and Aligning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85NF-4210 Cutting, Forming, and Bending . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85NF-4220 Support Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86NF-4230 Fitting and Aligning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

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NF-4240 Requirements for Welded Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87NF-4300 Welding Qualifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

NF-4310 General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87NF-4320 Welding Qualifications and Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87NF-4330 General Requirements for Welding Procedure Qualification Tests . . . . . . 88

NF-4400 Rules Governing Making and Repairing Welds . . . . . . . . . . . . . . . . . . . . . . 90NF-4410 Precautions to Be Taken Before Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . 90NF-4420 Rules for Making Welded Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90NF-4430 Welding of Attachments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91NF-4440 Special Requirements for Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91NF-4450 Repair of Weld Metal Defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

NF-4500 Brazing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93NF-4510 Rules for Brazing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

NF-4600 Heat Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94NF-4610 Welding Preheat and Interpass Requirements . . . . . . . . . . . . . . . . . . . . . . 94NF-4620 Postweld Heat Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94NF-4660 Heat Treatment of Electroslag Welds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

NF-4700 Requirements for Bolted Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99NF-4710 Bolting and Threading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99NF-4720 Bolting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Article NF-5000 Examination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102NF-5100 General Requirements for Examination . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

NF-5110 Procedures, Qualifications, and Evaluations . . . . . . . . . . . . . . . . . . . . . . . . 102NF-5200 Required Examination of Welds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

NF-5210 Examination of Class 1 Support Welds . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102NF-5220 Examination of Class 2 and MC Support Welds . . . . . . . . . . . . . . . . . . . . . 103NF-5230 Examination of Class 3 Support Welds . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103NF-5240 Inertia and Continuous Drive Friction Welds . . . . . . . . . . . . . . . . . . . . . . . 103

NF-5300 Acceptance Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103NF-5320 Radiographic Acceptance Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103NF-5330 Ultrasonic Acceptance Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104NF-5340 Magnetic Particle Acceptance Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . 104NF-5350 Liquid Penetrant Acceptance Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104NF-5360 Visual Acceptance Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

NF-5500 Qualifications and Certification of Nondestructive Examination Personnel 105NF-5510 General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105NF-5520 Personnel Qualification, Certification, and Verification . . . . . . . . . . . . . . . 105NF-5530 Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Article NF-8000 Certificates of Authorization and Certification Documents . . . . . . . . 107NF-8100 General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Mandatory Appendix NF-I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Mandatory Appendix NF-II Design of Single Angle Members . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Mandatory Appendix NF-III Energy Absorbing Support Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Nonmandatory Appendix NF-A Structural Bolt Preloading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Nonmandatory Appendix NF-B Design Allowable Stresses for Plate and Shell and Linear Type Sup-ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Nonmandatory Appendix NF-C Design Basis for Linear‐Type Supports . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Nonmandatory Appendix NF-D Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Nonmandatory Appendix NF-E Dampers, Energy Absorbers, and Snubbers . . . . . . . . . . . . . . . . . . . . . . 143

FIGURESNF-1132-1 Typical Examples of Jurisdictional Boundaries Between Piping Supports and the Building

Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3NF-1132-2 Typical Example of Jurisdictional Boundary Between Component Support and the Building

Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6NF-1214-1 Typical Standard Support Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7NF-2311(b)-1 Impact Test Exemption Curves for Materials for Class 2, 3, and MC Supports . . . . . . . . . . 15NF-2331(a)-1 Required Cv Energy Values for Class 2 and MC Support Material Other Than Bolting . . . 19NF-2331(a)-2 Required Cv Energy Values for Class 3 support Material Other Than Bolting . . . . . . . . . . 20NF-2433.1-1 Delta Ferrite Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25NF-3226.1-1 Permissible Welded Joints for Class 1 Plate‐ and Shell‐Type Supports . . . . . . . . . . . . . . . . 35NF-3226.1(a)-1 Typical Weld Details Referenced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36NF-3226.1(a)-2 Butt Welding of Plates of Unequal Thickness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37NF-3256.1-1 Permissible Welded Joints for Class 2, 3, and MC Plate‐ and Shell‐Type Supports . . . . . . 39NF-3324.1(a)(1) Typical Friction‐Type Connections Using High Strength Bolts . . . . . . . . . . . . . . . . . . . . . . . 61NF-3332.3-1 Illustrative Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71NF-3426.1-1 Additional Permissible Welded Joints for Class 1 Standard Supports . . . . . . . . . . . . . . . . . 79NF-3626(a)-1 Additional Permissible Welded Joints for Class 1 Piping Supports . . . . . . . . . . . . . . . . . . . 82NF-4427-1 Fillet Weld Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92NF-4441-1 Weld Joint Producing Through‐Thickness Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93NF-II-3510 Equal Leg Single Angle Limits for Fb = 0.66Sy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113NF-A-1311 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121NF-B-2400-1 Effective Length Factor for Various End Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126NF-B-2400-2 Alignment Chart for Effective Length of Columns in Continuous Frames . . . . . . . . . . . . . . 127

TABLESNF-2121(a)-1 Material Tables Required for Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10NF-2311(b)-1 Exemptions From Impact Testing Under NF-2311(b)(9) and NF-2311(b)(10) for Mate-

rial Thickness to 21/2 in. (64 mm), Inclusive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14NF-2331(a)-1 Required Cv Lateral Expansion Values for Class 1 Support Material Other Than Bolting 17NF-2331(a)-2 Required Cv Lateral Expansion Values for Class 2 And MC Support Material Other Than

Bolting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17NF-2331(a)-3 Required Cv Lateral Expansion Values for Class 3 Support Material Other Than Bolting 17NF-2331(a)-4 Required Cv Energy Values for Class 1 Support Material Other Than Bolting . . . . . . . . 18NF-2333-1 Required Cv Values for Bolting Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21NF-2432.1-1 Sampling of Welding Materials for Chemical Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24NF-2432.2(a)-1 Welding Material Chemical Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24NF-3131(a)-1 Reference Paragraphs for Procedures for Design of Component Supports, Piping Sup-

ports, and Standard Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30NF-3221.2-1 Elastic Analysis Stress Categories and Stress Limit Factors for Class 1 Plate‐ And Shell‐

Type Supports Designed by Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32NF-3225.2-1 Stress Limit Factors for Class 1, 2, 3, and MC Bolt Design by Analysis . . . . . . . . . . . . . . 34NF-3251.2-1 Elastic Analysis Stress Categories and Stress Limit Factors for Class 2, 3, and MC Plate‐

And Shell‐Type Supports Designed by Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38NF-3312.1(b)-1 Elastic Analysis Stress Categories and Stress Limit Factors for Class 1, 2, 3, and MC

Linear-Type Supports Designed by Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43NF-3322.2(e)(2)-1 Limiting Proportions for Channels and Tees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52NF-3324.5(a)-1 Allowable Stress Limits for Class 1 Linear‐Type Support Welds . . . . . . . . . . . . . . . . . . . 63NF-3324.6(a)(4)-1 Effective Slip Coefficient Versus Surface Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66NF-3324.6(b)(1)-1 Minimum Edge Distances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66NF-3332.2-1 Classification of Loading Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67NF-3332.3-1 Stress Categories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68NF-3332.4-1 Allowable Stress Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73NF-3611-1 Suggested Piping Support Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81NF-4232-1 Maximum Allowable Offset in Final Butt Welded Joints . . . . . . . . . . . . . . . . . . . . . . . . . . 86

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NF-4622.1-1 Mandatory Requirements for Postweld Heat Treatment (PWHT) of Welds . . . . . . . . . . 95NF-4622.4(c)-1 Alternative Holding Temperatures and Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96NF-4622.7(b)-1 Exemptions to Mandatory PWHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97NF-4721(a)-1 Bolt Hole Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99NF-4721(b)-1 Tolerances on Oversized Holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100NF-II-3532-1 Bw Values for Angles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114NF-B-4000 Factors of Safety for a Material With a Low Value of Su/Sy Ratio . . . . . . . . . . . . . . . . . . 129NF-C-4000 Design Basis for Linear‐Type Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135NF-D-1320-1 Clamp Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138NF-D-1330-1 Local Installation Tolerances for Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

ENDNOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

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ð13Þ LIST OF SECTIONSSECTIONSI Rules for Construction of Power Boilers

II Materials• Part A — Ferrous Material Specifications• Part B — Nonferrous Material Specifications• Part C — Specifications for Welding Rods, Electrodes, and Filler Metals• Part D — Properties (Customary)• Part D — Properties (Metric)

III Rules for Construction of Nuclear Facility Components• Subsection NCA — General Requirements for Division 1 and Division 2• Appendices• Division 1– Subsection NB — Class 1 Components– Subsection NC — Class 2 Components– Subsection ND — Class 3 Components– Subsection NE — Class MC Components– Subsection NF — Supports– Subsection NG — Core Support Structures– Subsection NH — Class 1 Components in Elevated Temperature Service

• Division 2 — Code for Concrete Containments• Division 3 — Containments for Transportation and Storage of Spent Nuclear Fuel and High Level RadioactiveMaterial and Waste

• Division 5 — High Temperature Reactors

IV Rules for Construction of Heating Boilers

V Nondestructive Examination

VI Recommended Rules for the Care and Operation of Heating Boilers

VII Recommended Guidelines for the Care of Power Boilers

VIII Rules for Construction of Pressure Vessels• Division 1• Division 2 — Alternative Rules• Division 3 — Alternative Rules for Construction of High Pressure Vessels

IX Welding and Brazing Qualifications

X Fiber-Reinforced Plastic Pressure Vessels

XI Rules for Inservice Inspection of Nuclear Power Plant Components

XII Rules for Construction and Continued Service of Transport Tanks

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INTERPRETATIONS

ASME issues written replies to inquiries concerning interpretation of technical aspects of the Code.Interpretations of the Code are posted in January and July at http://cstools.asme.org/interpretations.cfm. Any Interpre-

tations issued during the previous two calendar years are included with the publication of the applicable Section of theCode. Interpretations of Section III, Divisions 1 and 2 and Section III Appendices are included with Subsection NCA.

CODE CASES

The Boiler and Pressure Vessel Code committees meet regularly to consider proposed additions and revisions to theCode and to formulate Cases to clarify the intent of existing requirements or provide, when the need is urgent, rulesfor materials or constructions not covered by existing Code rules. Those Cases that have been adopted will appear inthe appropriate 2013 Code Cases book: “Boilers and Pressure Vessels” or “Nuclear Components.” Supplements will besent automatically to the purchasers of the Code Cases books up to the publication of the 2015 Code.

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ð13Þ FOREWORD

(This Foreword is provided as an aid to the user and is not part of the rules of this Code.)

In 1911, The American Society of Mechanical Engineers established the Boiler and Pressure Vessel Committee to for-mulate standard rules for the construction of steam boilers and other pressure vessels. In 2009, the Boiler and PressureVessel Committee was superseded by the following committees:

(a) Committee on Power Boilers (I)

(b) Committee on Materials (II)

(c) Committee on Construction of Nuclear Facility Components (III)

(d) Committee on Heating Boilers (IV)

(e) Committee on Nondestructive Examination (V)

(f) Committee on Pressure Vessels (VIII)

(g) Committee on Welding and Brazing (IX)

(h) Committee on Fiber-Reinforced Plastic Pressure Vessels (X)

(i) Committee on Nuclear Inservice Inspection (XI)

(j) Committee on Transport Tanks (XII)

Where reference is made to “the Committee” in this Foreword, each of these committees is included individually andcollectively.

The Committee's function is to establish rules of safety relating only to pressure integrity, which govern theconstruction* of boilers, pressure vessels, transport tanks, and nuclear components, and the inservice inspection of nu-clear components and transport tanks. The Committee also interprets these rules when questions arise regarding theirintent. This Code does not address other safety issues relating to the construction of boilers, pressure vessels, transporttanks, or nuclear components, or the inservice inspection of nuclear components or transport tanks. Users of the Codeshould refer to the pertinent codes, standards, laws, regulations, or other relevant documents for safety issues other thanthose relating to pressure integrity. Except for Sections XI and XII, and with a few other exceptions, the rules do not, ofpractical necessity, reflect the likelihood and consequences of deterioration in service related to specific service fluids orexternal operating environments. In formulating the rules, the Committee considers the needs of users, manufacturers,and inspectors of pressure vessels. The objective of the rules is to afford reasonably certain protection of life and prop-erty, and to provide a margin for deterioration in service to give a reasonably long, safe period of usefulness. Advance-ments in design and materials and evidence of experience have been recognized.

This Code contains mandatory requirements, specific prohibitions, and nonmandatory guidance for construction activ-ities and inservice inspection and testing activities. The Code does not address all aspects of these activities and thoseaspects that are not specifically addressed should not be considered prohibited. The Code is not a handbook and cannotreplace education, experience, and the use of engineering judgment. The phrase engineering judgement refers to technicaljudgments made by knowledgeable engineers experienced in the application of the Code. Engineering judgments must beconsistent with Code philosophy, and such judgments must never be used to overrule mandatory requirements or specificprohibitions of the Code.

The Committee recognizes that tools and techniques used for design and analysis change as technology progresses andexpects engineers to use good judgment in the application of these tools. The designer is responsible for complying withCode rules and demonstrating compliance with Code equations when such equations are mandatory. The Code neitherrequires nor prohibits the use of computers for the design or analysis of components constructed to the requirementsof the Code. However, designers and engineers using computer programs for design or analysis are cautioned that theyare responsible for all technical assumptions inherent in the programs they use and the application of these programs totheir design.

* Construction, as used in this Foreword, is an all-inclusive term comprising materials, design, fabrication, examination, inspection, testing, cer-tification, and pressure relief.

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The rules established by the Committee are not to be interpreted as approving, recommending, or endorsing any pro-prietary or specific design, or as limiting in any way the manufacturer's freedom to choose any method of design or anyform of construction that conforms to the Code rules.

The Committee meets regularly to consider revisions of the rules, new rules as dictated by technological development,Code Cases, and requests for interpretations. Only the Committee has the authority to provide official interpretations ofthis Code. Requests for revisions, new rules, Code Cases, or interpretations shall be addressed to the Secretary in writingand shall give full particulars in order to receive consideration and action (see Submittal of Technical Inquiries to theBoiler and Pressure Vessel Standards Committees). Proposed revisions to the Code resulting from inquiries will be pre-sented to the Committee for appropriate action. The action of the Committee becomes effective only after confirmation byballot of the Committee and approval by ASME. Proposed revisions to the Code approved by the Committee are submittedto the American National Standards Institute (ANSI) and published at http://cstools.asme.org/csconnect/public/in-dex.cfm?PublicReview=Revisions to invite comments from all interested persons. After public review and final approvalby ASME, revisions are published at regular intervals in Editions of the Code.

The Committee does not rule on whether a component shall or shall not be constructed to the provisions of the Code.The scope of each Section has been established to identify the components and parameters considered by the Committeein formulating the Code rules.

Questions or issues regarding compliance of a specific component with the Code rules are to be directed to the ASMECertificate Holder (Manufacturer). Inquiries concerning the interpretation of the Code are to be directed to the Commit-tee. ASME is to be notified should questions arise concerning improper use of an ASME Certification Mark.

When required by context in this Section, the singular shall be interpreted as the plural, and vice versa, and the fem-inine, masculine, or neuter gender shall be treated as such other gender as appropriate.

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STATEMENT OF POLICY ON THE USE OF THE CERTIFICATIONMARK AND CODE AUTHORIZATION IN ADVERTISING

ASME has established procedures to authorize qualified organizations to perform various activities in accordance withthe requirements of the ASME Boiler and Pressure Vessel Code. It is the aim of the Society to provide recognition of or-ganizations so authorized. An organization holding authorization to perform various activities in accordance with the re-quirements of the Code may state this capability in its advertising literature.Organizations that are authorized to use the Certification Mark for marking items or constructions that have been con-

structed and inspected in compliance with the ASME Boiler and Pressure Vessel Code are issued Certificates of Author-ization. It is the aim of the Society to maintain the standing of the Certification Mark for the benefit of the users, theenforcement jurisdictions, and the holders of the Certification Mark who comply with all requirements.Based on these objectives, the following policy has been established on the usage in advertising of facsimiles of the

Certification Mark, Certificates of Authorization, and reference to Code construction. The American Society of MechanicalEngineers does not “approve,” “certify,” “rate,” or “endorse” any item, construction, or activity and there shall be no state-ments or implications that might so indicate. An organization holding the Certification Mark and/or a Certificate ofAuthorization may state in advertising literature that items, constructions, or activities “are built (produced or per-formed) or activities conducted in accordance with the requirements of the ASME Boiler and Pressure Vessel Code,”or “meet the requirements of the ASME Boiler and Pressure Vessel Code.” An ASME corporate logo shall not be usedby any organization other than ASME.The Certification Mark shall be used only for stamping and nameplates as specifically provided in the Code. However,

facsimiles may be used for the purpose of fostering the use of such construction. Such usage may be by an association or asociety, or by a holder of the Certification Mark who may also use the facsimile in advertising to show that clearly spe-cified items will carry the Certification Mark. General usage is permitted only when all of a manufacturer’s items are con-structed under the rules.

STATEMENT OF POLICY ON THE USE OF ASME MARKING TOIDENTIFY MANUFACTURED ITEMS

The ASME Boiler and Pressure Vessel Code provides rules for the construction of boilers, pressure vessels, and nuclearcomponents. This includes requirements for materials, design, fabrication, examination, inspection, and stamping. Itemsconstructed in accordance with all of the applicable rules of the Code are identified with the official Certification Markdescribed in the governing Section of the Code.Markings such as “ASME,” “ASME Standard,” or any other marking including “ASME” or the Certification Mark shall not

be used on any item that is not constructed in accordance with all of the applicable requirements of the Code.Items shall not be described on ASME Data Report Forms nor on similar forms referring to ASME that tend to imply that

all Code requirements have been met when, in fact, they have not been. Data Report Forms covering items not fully com-plying with ASME requirements should not refer to ASME or they should clearly identify all exceptions to the ASMErequirements.

ð13Þ SUBMITTAL OF TECHNICAL INQUIRIES TO THE BOILER ANDPRESSURE VESSEL STANDARDS COMMITTEES

1 INTRODUCTION

(a) The following information provides guidance to Code users for submitting technical inquiries to the committees. SeeGuideline on the Approval of New Materials Under the ASME Boiler and Pressure Vessel Code in Section II, Parts C and Dfor additional requirements for requests involving adding new materials to the Code. Technical inquiries include requestsfor revisions or additions to the Code rules, requests for Code Cases, and requests for Code Interpretations, as describedbelow.

(1) Code Revisions. Code revisions are considered to accommodate technological developments, address administra-tive requirements, incorporate Code Cases, or to clarify Code intent.

(2) Code Cases. Code Cases represent alternatives or additions to existing Code rules. Code Cases are written as aquestion and reply, and are usually intended to be incorporated into the Code at a later date. When used, Code Cases pre-scribe mandatory requirements in the same sense as the text of the Code. However, users are cautioned that not all jur-isdictions or owners automatically accept Code Cases. The most common applications for Code Cases are:

(-a) to permit early implementation of an approved Code revision based on an urgent need

(-b) to permit the use of a new material for Code construction

(-c) to gain experience with new materials or alternative rules prior to incorporation directly into the Code

(3) Code Interpretations. Code Interpretations provide clarification of the meaning of existing rules in the Code, andare also presented in question and reply format. Interpretations do not introduce new requirements. In cases where ex-isting Code text does not fully convey the meaning that was intended, and revision of the rules is required to support aninterpretation, an Intent Interpretation will be issued and the Code will be revised.

(b) The Code rules, Code Cases, and Code Interpretations established by the committees are not to be considered asapproving, recommending, certifying, or endorsing any proprietary or specific design, or as limiting in any way the free-dom of manufacturers, constructors, or owners to choose any method of design or any form of construction that conformsto the Code rules.

(c) Inquiries that do not comply with these provisions or that do not provide sufficient information for a committee’sfull understanding may result in the request being returned to the inquirer with no action.

2 INQUIRY FORMAT

Submittals to a committee shall include:

(a) Purpose. Specify one of the following:

(1) revision of present Code rules

(2) new or additional Code rules

(3) Code Case

(4) Code Interpretation

(b) Background. Provide the information needed for the committee’s understanding of the inquiry, being sure to includereference to the applicable Code Section, Division, Edition, Addenda (if applicable), paragraphs, figures, and tables. Pre-ferably, provide a copy of the specific referenced portions of the Code.

(c) Presentations. The inquirer may desire or be asked to attend a meeting of the committee to make a formal presenta-tion or to answer questions from the committee members with regard to the inquiry. Attendance at a committee meetingshall be at the expense of the inquirer. The inquirer’s attendance or lack of attendance at a meeting shall not be a basis foracceptance or rejection of the inquiry by the committee.

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3 CODE REVISIONS OR ADDITIONS

Requests for Code revisions or additions shall provide the following:(a) Proposed Revisions or Additions. For revisions, identify the rules of the Code that require revision and submit a copy

of the appropriate rules as they appear in the Code, marked up with the proposed revision. For additions, provide therecommended wording referenced to the existing Code rules.(b) Statement of Need. Provide a brief explanation of the need for the revision or addition.(c) Background Information. Provide background information to support the revision or addition, including any data or

changes in technology that form the basis for the request that will allow the committee to adequately evaluate the pro-posed revision or addition. Sketches, tables, figures, and graphs should be submitted as appropriate. When applicable,identify any pertinent paragraph in the Code that would be affected by the revision or addition and identify paragraphsin the Code that reference the paragraphs that are to be revised or added.

4 CODE CASES

Requests for Code Cases shall provide a Statement of Need and Background Information similar to that defined in 3(b)and 3(c), respectively, for Code revisions or additions. The urgency of the Code Case (e.g., project underway or imminent,new procedure, etc.) must be defined and it must be confirmed that the request is in connection with equipment that willbear the Certification Mark, with the exception of Section XI applications. The proposed Code Case should identify theCode Section and Division, and be written as a Question and a Reply in the same format as existing Code Cases. Requestsfor Code Cases should also indicate the applicable Code Editions and Addenda (if applicable) to which the proposed CodeCase applies.

5 CODE INTERPRETATIONS

(a) Requests for Code Interpretations shall provide the following:(1) Inquiry. Provide a condensed and precise question, omitting superfluous background information and, when pos-

sible, composed in such a way that a “yes” or a “no” Reply,with brief provisos if needed, is acceptable. The question shouldbe technically and editorially correct.

(2) Reply. Provide a proposed Reply that will clearly and concisely answer the Inquiry question. Preferably, the Replyshould be “yes” or “no,” with brief provisos if needed.

(3) Background Information. Provide any background information that will assist the committee in understandingthe proposed Inquiry and Reply.(b) Requests for Code Interpretations must be limited to an interpretation of a particular requirement in the Code or a

Code Case. The committee cannot consider consulting type requests such as the following:(1) a review of calculations, design drawings, welding qualifications, or descriptions of equipment or parts to deter-

mine compliance with Code requirements;(2) a request for assistance in performing any Code-prescribed functions relating to, but not limited to, material se-

lection, designs, calculations, fabrication, inspection, pressure testing, or installation;(3) a request seeking the rationale for Code requirements.

6 SUBMITTALS

Submittals to and responses from the committees shall meet the following:(a) Submittal. Inquiries from Code users shall be in English and preferably be submitted in typewritten form; however,

legible handwritten inquiries will also be considered. They shall include the name, address, telephone number, fax num-ber, and e-mail address, if available, of the inquirer and be mailed to the following address:SecretaryASME Boiler and Pressure Vessel CommitteeTwo Park AvenueNew York, NY 10016-5990As an alternative, inquiries may be submitted via e-mail to: SecretaryBPV@asme.org.(b) Response. The Secretary of the appropriate committee shall acknowledge receipt of each properly prepared inquiry

and shall provide a written response to the inquirer upon completion of the requested action by the committee.

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ð13Þ PERSONNELASME Boiler and Pressure Vessel Standards Committees,

Subgroups, and Working GroupsJanuary 1, 2013

TECHNICAL OVERSIGHT MANAGEMENT COMMITTEE (TOMC)

J. G. Feldstein, ChairT. P. Pastor, Vice ChairJ. S. Brzuszkiewicz, Staff SecretaryR. W. BarnesR. J. BasileJ. E. BateyT. L. BedeauxD. L. BergerD. A. CanonicoA. ChaudouetR. P. DeublerD. A. DouinR. E. GimpleM. GoldT. E. Hansen

J. F. HenryG. G. KarcherW. M. LundyJ. R. MackayU. R. MillerW. E. NorrisG. C. ParkM. D. RanaB. W. RobertsS. C. RobertsF. J. Schaaf, Jr.A. SelzB. F. ShelleyW. J. SperkoR. W. Swayne

HONORARY MEMBERS (MAIN COMMITTEE)

F. P. BartonR. J. CepluchT. M. CullenW. D. DotyJ. R. FarrG. E. FeigelR. C. GriffinO. F. Hedden

M. H. JawadA. J. JustinW. G. KnechtJ. LeCoffT. G. McCartyG. C. MillmanR. A. MoenR. F. Reedy, Sr.

ADMINISTRATIVE COMMITTEE

J. G. Feldstein, ChairT. P. Pastor, Vice ChairJ. S. Brzuszkiewicz, Staff SecretaryR. W. BarnesJ. E. BateyT. L. BedeauxD. L. Berger

J. F. Henry

U. R. Miller

G. C. Park

M. D. Rana

B. F. Shelley

W. J. Sperko

MARINE CONFERENCE GROUP

H. N. Patel, ChairJ. S. Brzuszkiewicz, Staff SecretaryJ. G. Hungerbuhler, Jr.

G. NairJ. D. Reynolds

CONFERENCE COMMITTEE

D. A. Douin — Ohio, SecretaryJ. T. Amato — MinnesotaB. P. Anthony — Rhode IslandR. D. Austin — ArizonaG. Baumgardner — MichiganW. K. Brigham — New HampshireC. W. Bryan — TennesseeM. A. Burns — FloridaJ. H. Burpee — MaineC. B. Cantrell — NebraskaD. C. Cook — CaliforniaB. J. Crawford — GeorgiaE. L. Creaser — New Brunswick,Canada

W. E. Crider, Jr. — VermontP. L. Dodge — Nova Scotia, CanadaS. Donovan — NorthwestTerritories, Canada

D. Eastman — Newfoundland andLabrador, Canada

B. Fierheller — Manitoba, CanadaC. Fulton — AlaskaG. M. Given, Jr. — North CarolinaM. Graham — OregonR. J. Handy — KentuckyD. R. Hannon — ArkansasE. G. Hilton — VirginiaI. M. Hinkle — South DakotaE. Hurd — British Colombia,Canada

D. T. Jagger — OhioD. J. Jenkins — KansasA. P. Jones — TexasL. R. Kline — PennsylvaniaM. R. Klosterman — IowaK. J. Kraft — Maryland

K. T. Lau — Alberta, CanadaB. E. Logan — MassachusettsW. McGivney — New YorkS. V. Nelson — ColoradoC. C. Novak — IllinoisT. Oda — WashingtonW. R. Owens — LouisianaR. P. Pate — AlabamaR. L. Perry — NevadaJ. F. Porcella — West VirginiaD. C. Price — Yukon Territories,Canada

D. Pringnitz — OklahomaR. S. Pucek — WisconsinR. D. Reetz — North DakotaC. F. Reyes — CaliforniaT. W. Rieger — Manitoba, CanadaK. A. Rudolph — HawaiiM. J. Ryan — IllinoisM. H. Sansone — New YorkT. S. Scholl — Ontario, CanadaG. Scribner — MissouriC. S. Selinger — Saskatchewan,Canada

R. Spiker — North CarolinaT. Stewart — MontanaR. K. Sturm — UtahS. R. Townsend — Prince EdwardIsland, Canada

W. Vallance — MichiganM. J. Verhagen — WisconsinM. Washington — New JerseyK. L. Watson — MississippiR. W. Whitman, Jr. — DelawareD. J. Willis — Indiana

INTERNATIONAL INTEREST REVIEW GROUP

V. FelixY.-G. KimS. H. LeongW. LinO. F. Manafa

C. MinuT. S. G. NarayannenY.-W. ParkR. ReynagaP. Williamson

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PROJECT TEAM ON HYDROGEN TANKS

A. P. Amato, Staff SecretaryF. L. BrownD. A. CanonicoD. C. CookJ. CoursenJ. W. FelbaumN. L. NewhouseA. S. OlivaresG. B. Rawls, Jr.B. F. ShelleyJ. R. Sims, Jr.N. SiroshJ. H. SmithS. StaniszewskiT. TaharaD. W. Treadwell

E. Upitis

C. T. I. Webster

W. Yoru

R. C. Biel, Contributing Member

M. Duncan, Contributing Member

D. R. Frikken, Contributing Member

L. E. Hayden, Jr., ContributingMember

K. T. Lau, Contributing Member

K. Nibur, Contributing Member

K. Oyamada, Contributing Member

C. H. Rivkin, Contributing Member

C. San Marchi, ContributingMember

B. Somerday, Contributing Member

COMMITTEE ON POWER BOILERS (BPV I)

D. L. Berger, ChairR. E. McLaughlin, Vice ChairU. D'Urso, Staff SecretaryJ. L. ArnoldS. W. CameronD. A. CanonicoK. K. ColemanP. D. EdwardsP. FalloueyJ. G. FeldsteinG. W. GalanesT. E. HansenJ. F. HenryJ. S. HunterW. L. LowryJ. R. MacKay

F. MassiP. A. MolvieY. OishiE. M. OrtmanJ. T. PillowB. W. RobertsR. D. Schueler, Jr.J. M. TanzoshD. E. TuttleR. V. WielgoszinskiD. J. WillisG. Ardizzoia, DelegateH. Michael, DelegateD. N. French, Honorary MemberT. C. McGough, Honorary MemberR. L. Williams, Honorary Member

Subgroup on Design (BPV I)

P. A. Molvie, ChairJ. Vattappilly, SecretaryD. I. AndersonP. DhorajiaJ. P. GlaspieG. B. KomoraJ. C. Light

B. W. Moore

D. A. Olson

R. D. Schueler, Jr.

S. V. Torkildson

M. Wadkinson

C. F. Jeerings, Contributing Member

Subgroup on Fabrication and Examination (BPV I)

J. T. Pillow, ChairJ. L. Arnold, SecretaryG. W. Galanes, SecretaryD. L. BergerS. W. CameronK. CraverG. T. DunkerP. F. Gilston

J. Hainsworth

T. E. Hansen

C. T. McDaris

R. E. McLaughlin

R. J. Newell

Y. Oishi

R. V. Wielgoszinski

Subgroup on General Requirements (BPV I)

R. E. McLaughlin, ChairT. E. Hansen, Vice ChairF. Massi, SecretaryP. D. EdwardsW. L. LowryE. M. OrtmanJ. T. Pillow

D. TompkinsS. V. TorkildsonD. E. TuttleM. WadkinsonR. V. WielgoszinskiD. J. WillisC. F. Jeerings, Contributing Member

Subgroup on Heat Recovery Steam Generators (BPV I)

T. E. Hansen, ChairS. V. Torkildson, SecretaryJ. L. ArnoldJ. P. BellB. G. CarsonL. R. DouglasJ. GertzG. B. Komora

C. T. McDaris

B. W. Moore

Y. Oishi

E. M. Ortman

R. D. Schueler, Jr.

D. Tompkins

B. C. Turczynski

Subgroup on Locomotive Boilers (BPV I)

L. Moedinger, ChairS. M. Butler, SecretaryP. BoschanJ. BraunR. C. Franzen, Jr.D. W. GrinerS. D. JacksonM. A. JanssenS. A. Lee

G. M. Ray

J. E. Rimmasch

R. D. Schueler, Jr.

R. B. Stone

M. W. Westland

W. L. Withuhn

R. Yuill

R. D. Reetz, Contributing Member

Subgroup on Materials (BPV I)

G. W. Galanes, ChairK. K. Coleman, Vice ChairJ. S. Hunter, SecretaryS. H. BowesD. A. CanonicoP. FalloueyK. L. HayesJ. F. Henry

O. X. Li

J. R. MacKay

F. Masuyama

D. W. Rahoi

B. W. Roberts

J. M. Tanzosh

J. Vattappilly

Subgroup on Piping (BPV I)

D. Tompkins, ChairB. Mollitor, SecretaryD. L. BergerJ. A. ByersP. D. Edwards

G. W. GalanesT. E. HansenT. G. KosmatkaW. L. LowryF. Massi

Subgroup on Solar Boilers (BPV I)

J. S. Hunter, ChairS. V. Torkildson, SecretaryG. W. GalanesR. E. HearneD. J. Koza

J. C. LightY. MagenF. MassiM. J. SlaterJ. T. Trimble, Jr.

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Task Group on Modernization of BPVC Section I

D. I. Anderson, ChairU. D’Urso, Staff SecretaryJ. L. ArnoldS. W. CameronG. W. GalanesJ. P. GlaspieJ. F. Henry

R. E. McLaughlin

P. A. Molvie

E. M. Ortman

J. T. Pillow

B. W. Roberts

D. E. Tuttle

COMMITTEE ON MATERIALS (BPV II)

J. F. Henry, ChairD. W. Rahoi, Vice ChairN. Lobo, Staff SecretaryF. AbeA. AppletonJ. CameronD. A. CanonicoA. ChaudouetP. FalloueyJ. R. FouldsD. W. GandyM. H. GilkeyM. GoldJ. F. GrubbJ. A. HallM. KatcherF. MasuyamaR. K. NanstadB. W. RobertsE. ShapiroM. H. Skillingberg

M. J. SlaterR. C. SutherlinR. W. SwindemanJ. M. TanzoshD. TylerD. Kwon, DelegateO. Oldani, DelegateW. R. Apblett, Jr., ContributingMember

H. D. Bushfield, ContributingMember

M. L. Nayyar, Contributing MemberE. G. Nisbett, Contributing MemberE. Upitis, Contributing MemberT. M. Cullen, Honorary MemberW. D. Doty, Honorary MemberW. D. Edsall, Honorary MemberG. C. Hsu, Honorary MemberR. A. Moen, Honorary MemberC. E. Spaeder, Jr., Honorary MemberA. W. Zeuthen, Honorary Member

Subgroup on External Pressure (BPV II)

R. W. Mikitka, ChairD. L. Kurle, Vice ChairJ. A. A. Morrow, SecretaryL. F. CampbellD. S. GriffinJ. F. GrubbJ. R. Harris III

M. H. Jawad

C. R. Thomas

M. Wadkinson

M. Katcher, Contributing Member

C. H. Sturgeon, ContributingMember

Subgroup on Ferrous Specifications (BPV II)

A. Appleton, ChairS. Hochreiter, SecretaryB. M. DingmanM. J. DosdourianP. FalloueyJ. D. FritzT. GrahamJ. M. GrockiJ. F. GrubbK. M. HottleD. S. JanikowskiL. J. Lavezzi

W. C. MackJ. K. MahaneyA. S. MelilliE. G. NisbettK. E. OrieJ. ShickE. UpitisJ. D. WilsonP. WittenbachR. ZawieruchaR. M. Davison, ContributingMember

Subgroup on International Material Specifications (BPV II)

A. Chaudouet, ChairO. X. Li, Vice ChairT. F. Miskell, SecretaryS. W. CameronD. A. CanonicoP. FalloueyA. F. GarbolevskyD. O. Henry

M. Ishikawa

W. M. Lundy

A. R. Nywening

R. D. Schueler, Jr.

E. Upitis

O. Oldani, Delegate

H. Lorenz, Contributing Member

Subgroup on Nonferrous Alloys (BPV II)

R. C. Sutherlin, ChairH. AnadaJ. CallandD. DenisM. H. GilkeyJ. F. GrubbA. HeinoM. KatcherJ. KissellT. M. MalotaJ. A. McMaster

L. PaulD. W. RahoiW. RenE. ShapiroM. H. SkillingbergD. TylerR. ZawieruchaW. R. Apblett, Jr., ContributingMember

H. D. Bushfield, ContributingMember

Subgroup on Physical Properties (BPV II)

J. F. Grubb, ChairH. D. BushfieldD. Denis

P. FalloueyE. Shapiro

Subgroup on Strength, Ferrous Alloys (BPV II)

J. M. Tanzosh, ChairM. J. Slater, SecretaryF. AbeH. AnadaD. A. CanonicoA. Di RienzoP. FalloueyJ. R. FouldsM. GoldJ. A. HallJ. F. Henry

K. Kimura

F. Masuyama

D. W. Rahoi

B. W. Roberts

J. P. Shingledecker

R. W. Swindeman

T. P. Vassallo, Jr.

W. R. Apblett, Jr., ContributingMember

H. Murakami, Contributing Member

Subgroup on Strength of Weldments (BPV II & BPV IX)

W. F. Newell, Jr., ChairS. H. BowesK. K. ColemanP. D. FlennerJ. R. FouldsD. W. GandyM. GoldK. L. Hayes

J. F. Henry

D. W. Rahoi

B. W. Roberts

J. P. Shingledecker

W. J. Sperko

J. P. Swezy, Jr.

J. M. Tanzosh

Working Group on Materials Database (BPV II)

R. W. Swindeman, ChairN. Lobo, Staff SecretaryF. AbeJ. R. FouldsM. GoldJ. F. HenryM. Katcher

B. W. RobertsR. C. SutherlinD. Andrei, Contributing MemberW. Hoffelner, Contributing MemberT. Lazar, Contributing MemberD. T. Peters, Contributing MemberW. Ren, Contributing Member

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China International Working Group (BPV II)

T. Xu, SecretaryW. FangS. HuoS. LiM. LuB. ShouS. TanC. WangX. WangZ. WuF. Yang

G. YangR. YeL. YinH. ZhangX.-H ZhangYingkai ZhangYong ZhangQ. ZhaoS. ZhaoR. ZhouJ. Zou

COMMITTEE ON CONSTRUCTION OF NUCLEAR FACILITYCOMPONENTS (III)

R. W. Barnes, ChairJ. R. Cole, Vice ChairA. Byk, Staff SecretaryT. AdamsA. AppletonW. H. BorterT. D. BurchellR. P. DeublerA. C. EberhardtB. A. ErlerG. M. FosterR. S. Hill IIIW. HoffelnerR. M. JesseeR. I. JetterR. B. KeatingG. H. KooV. KostarevW. C. LaRochelleK. A. ManolyD. E. MatthewsW. N. McLeanJ. C. Minichiello

M. N. MitchellM. MorishitaD. K. MortonT. NagataR. F. Reedy, Sr.I. SaitoC. T. SmithW. K. Sowder, Jr.W. J. SperkoJ. D. StevensonK. R. WichmanC. S. WithersY. H. Choi, DelegateT. Ius, DelegateH.-T. Wang, DelegateC. C. Kim, Contributing MemberE. B. Branch, Honorary MemberG. D. Cooper, Honorary MemberW. D. Doty, Honorary MemberD. F. Landers, Honorary MemberR. A. Moen, Honorary MemberC. J. Pieper, Honorary Member

Subgroup on Containment Systems for Spent Fuel and High-LevelWaste Transport Packagings (BPV III)

G. M. Foster, ChairG. J. Solovey, Vice ChairD. K. Morton, SecretaryG. AbramczykD. J. AmmermanG. BjorkmanW. H. BorterG. R. CannellR. S. Hill IIIS. Horowitz

D. W. LewisP. E. McConnellA. B. MeichlerR. E. NickellE. L. PleinsT. SaegusaN. M. SimpsonR. H. SmithJ. D. StevensonC. J. Temus

Subgroup on Component Design (BPV III)

R. S. Hill III, ChairT. M. Adams, Vice ChairS. Pellet, SecretaryG. A. AntakiS. AsadaC. W. BrunyJ. R. ColeA. A. DermenjianR. P. DeublerP. HirschbergR. I. JetterR. B. KeatingH. KobayashiR. A. LadefianK. A. Manoly

R. J. MastersonD. E. MatthewsW. N. McLeanJ. C. MinichielloT. NagataA. N. NguyenE. L. PleinsI. SaitoG. C. SlagisJ. D. StevensonJ. P. TuckerK. R. WichmanC. WilsonJ. YangD. F. Landers, Contributing Member

Working Group on Supports (SG-D) (BPV III)

R. J. Masterson, ChairU. S. Bandyopadhyay, SecretaryK. AvrithiT. H. BakerF. J. BirchR. P. Deubler

A. N. NguyenI. SaitoJ. R. StinsonT. G. TerryahG. Z. TokarskiC.-I. Wu

Working Group on Core Support Structures (SG-D) (BPV III)

J. Yang, ChairJ. F. Kielb, SecretaryF. G. Al-ChammasD. Keck

H. S. MehtaM. D. SnyderA. TsirigotisJ. T. Land, Contributing Member

Working Group on Design Methodology (SG-D) (BPV III)

R. B. Keating, ChairS. D. Snow, SecretaryK. AvrithiR. D. BlevinsM. R. BreachD. L. CaldwellH. T. Harrison IIIP. HirschbergM. KassarJ. KimH. KobayashiJ. F. McCabeA. N. NguyenW. D. Reinhardt

D. H. Roarty

E. A. Rodriguez

P. K. Shah

J. D. Stevenson

A. Tsirigotis

S. Wang

T. M. Wiger

K. Wright

J. Yang

M. K. Au-Yang, ContributingMember

D. F. Landers, Contributing Member

W. S. Lapay, Contributing Member

Working Group on Design of Division 3 Containments(SG-D) (BPV III)

E. L. Pleins, ChairD. J. AmmermanG. BjorkmanS. HorowitzD. W. LewisJ. C. Minichiello

D. K. MortonC. J. TemusI. D. McInnes, Contributing MemberR. E. Nickell, Contributing MemberH. P. Shrivastava, ContributingMember