ASME STP-NU-045-1-2012 ROADMAP TO DEVELOP ASME CODE RULES FOR THE CONSTRUCTION OF HIGH TEMPERATURE GASCOOLED REACTORS (HTGRS)《实施高温气体冷却反应堆(HTGRS)制造用ASME规范路线图》.pdf
《ASME STP-NU-045-1-2012 ROADMAP TO DEVELOP ASME CODE RULES FOR THE CONSTRUCTION OF HIGH TEMPERATURE GASCOOLED REACTORS (HTGRS)《实施高温气体冷却反应堆(HTGRS)制造用ASME规范路线图》.pdf》由会员分享,可在线阅读,更多相关《ASME STP-NU-045-1-2012 ROADMAP TO DEVELOP ASME CODE RULES FOR THE CONSTRUCTION OF HIGH TEMPERATURE GASCOOLED REACTORS (HTGRS)《实施高温气体冷却反应堆(HTGRS)制造用ASME规范路线图》.pdf(32页珍藏版)》请在麦多课文档分享上搜索。
1、STP-NU-045-1ROADMAP TO DEVELOP ASME CODE RULES FOR THE CONSTRUCTION OF HIGH TEMPERATURE GAS COOLED REACTORS (HTGRS) STP-NU-045-1 ROADMAP TO DEVELOP ASME CODE RULES FOR THE CONSTRUCTION OF HIGH TEMPERATURE GAS- COOLED REACTORS (HTGRS) Prepared by: Robert Sims Becht Engineering Revised by: James Neste
2、ll MPR Associates Date of Issuance: June 30, 2012 This report was prepared as an account of work sponsored by U.S. NRC and the ASME Standards Technology, LLC (ASME ST-LLC). Neither ASME, ASME ST-LLC, the authors, nor others involved in the preparation or review of this report, nor any of their respe
3、ctive employees, members or persons acting on their behalf, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness or usefulness of any information, apparatus, product or process disclosed, or represents that its use would not infringe
4、 upon privately owned rights. Reference herein to any specific commercial product, process or service by trade name, trademark, manufacturer or otherwise does not necessarily constitute or imply its endorsement, recommendation or favoring by ASME ST-LLC or others involved in the preparation or revie
5、w of this report, or any agency thereof. The views and opinions of the authors, contributors and reviewers of the report expressed herein do not necessarily reflect those of ASME ST-LLC or others involved in the preparation or review of this report, or any agency thereof. ASME ST-LLC does not take a
6、ny 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 publication against liability for infringement of any applicable Letters Patent, nor assumes any such liability. Users o
7、f a publication 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 g
8、overnment or industry endorsement of this publication. ASME is the registered 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. ASME
9、 Standards Technology, LLC Three Park Avenue, New York, NY 10016-5990 ISBN No. 978-0-7918-3442-8 Copyright 2012 by ASME Standards Technology, LLC All Rights Reserved Roadmap for ASME HTGR Code Development STP-NU-045-1 iii TABLE OF CONTENTS Foreword . iv 1 VISION STATEMENT . 1 2 BACKGROUND . 2 3 STAK
10、EHOLDERS 3 4 INTRODUCTION AND ORGANIZATION 4 5 PHASE I ACTIVITIES 6 6 ASSUMPTIONS USED IN DEVELOPING THE ROADMAP FOR PHASE II . 7 7 REACTOR DESIGNS AND INFORMATION REQUIRED . 9 8 RESEARCH AND DEVELOPMENT TASKS . 10 9 RECOMMENDED “GLOBAL” ADMINISTRATIVE AND TECHNICAL TASKS FOR PHASES I AND II . 13 10
11、 RECOMMENDED SPECIFIC CODE RULE TASKS FOR PHASE II . 16 11 OVERALL INDUSTRY APPROACH AND ORGANIZATION 21 ASME ST- LLC TASKS 23 APPENDIX 1 LIST OF ACRONYMS AND ABBREVIATIONS . 24 ACKNOWLEDGEMENTS . 26 STP-NU-045-1 Roadmap for ASME HTGR Code Development iv FOREWORD The Roadmap has been developed as a
12、guide to the R ORNL/TM-2007/147, Volume 5 Next Generation Nuclear Plant Phenomena Identification and Ranking Tables (PIRTS), Volume 5: Graphite PIRTS. 8.4 Long Term R Non-safety related; Non-safety related with special treatment. The first and last of these correspond to Class A and B, respectively,
13、 as specified in BPV III-5. Roadmap for ASME HTGR Code Development STP-NU-045-1 15 9.2.6.3.2 Overall philosophy of elevated temperature design rules. For example, determine whether elevated temperature rules should be based on a 60-year life, with periodic surveillance coupon testing to confirm desi
14、gn life. Number of cycles should also be considered and the testing interval should be defined. 9.2.6.4 Determine whether the existing BPV Section III, Division 1, Subsection NF on supports should be modified for the HTGR. It may be better to review and update this subsection rather than writing a n
15、ew book or incorporating the requirements into BPV III-5. 9.2.7 Develop Common Terminology and Units of Measure. A common set of terminology, acronyms, abbreviations and units of measure should be developed for use in all HTGR Code rules. It is suggested that the SI system be the primary units, but
16、provisions for the use of alternative units should be made. STP-NU-045-1 Roadmap for ASME HTGR Code Development 16 10 RECOMMENDED SPECIFIC CODE RULE TASKS FOR PHASE II 10.1 Code Rule Development 10.1.1 The following tasks should be completed to support Code rules development over the Phase II period
17、. 10.1.1.1 Expand the General Requirements Portion of III-5. Based on Section III, Subsection NCA and needs identified by stakeholders, consider whether the Design Specification provided by the Owner should identify items such as anticipated degradation mechanisms and online monitoring or other NDE
18、techniques to detect each type of degradation mechanism in a timely manner for significance assessment and disposition. Examples of degradation mechanisms to be considered include: 10.1.1.1.1 Time/Temperature/Load envelope for each primary loop component including the IHX and reactor pressure vessel
19、 internals. 10.1.1.1.1.1 State whether equipment can be de-pressured when metal temperatures exceed defined limits to reduce stress at high temperatures. 10.1.1.1.2 Corrosion/erosion allowances. 10.1.1.1.2.1 Consider requiring that the Owner document the basis for the corrosion/erosion allowance. Co
20、nsider the need for Code rules with requirements for the testing. 10.1.1.1.3 Change in material properties due to carburization/decarburization. 10.1.1.1.4 Allowance for metal loss due to wear at heat exchanger tube supports and core supports where sliding can occur. 10.1.1.1.4.1 Consider requiring
21、the Owner to document the basis for the allowance for metal loss. The need for Code rules with requirements for the testing should also be considered. 10.1.1.1.5 End-of-life strength and toughness properties for metallic and non-metallic materials that are expected to degrade due to thermal aging, r
22、adiation, and interaction with the environment. Such properties may be in a range rather than a single set of values because of the operation of several types of degradation mechanisms. 10.1.1.1.5.1 Consider requiring the Owner to document the basis for the end-of-life properties. The need for Code
23、rules with requirements for the testing should also be considered. 10.1.1.1.6 Beginning-of-life and end-of-life emissivity for components. 10.1.1.1.6.1 Consider requiring the Owner to document the basis for the end-of-life emissivity. The need for Roadmap for ASME HTGR Code Development STP-NU-045-1
24、17 Code rules with requirements for the testing should also be considered. 10.1.1.2 Correct and Extend Allowable Stresses Values. 10.1.1.2.1 Correct errors in the Type 304 and Type 316 allowable stress values identified in ASME ST-LLC Task 6. 10.1.1.2.2 Identify and mitigate low creep rupture streng
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