Status Report on ASME Code Development for Nonmetallic Core Components in 2020

In October 2003, a meeting was held at Oak Ridge National Laboratory to discuss a proposal to restart the development of the draft ASME BPV Section III, Division 2, Subsection CE code. The intent was to update, expand and attain approval of a graphite core components code to support Generation IV nuclear energy projects.

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Status of Design Code Work in Germany Concerning Materials and Structural Aspects for the Heat Exchanger Components of Advanced HTR’s

Journal of Engineering for Power ◽

10.1115/1.3227472 ◽

1983 ◽

Vol 105 (4) ◽

pp. 713-718 ◽

Cited By ~ 2

Author(s):

F. Schubert ◽

H. J. Seehafer ◽

E. Bodmann

Keyword(s):

Critical Discussion ◽

Time Dependent ◽

Status Report ◽

Design Codes ◽

Design Code ◽

Design Data ◽

Creep Buckling ◽

Asme Code ◽

Design Analyses ◽

Structural Aspects

A brief status report on the work concerning design codes for HTR components with service temperatures above 800°C is given. The evaluation of experimental test work and preliminary time-dependent design data are reviewed and some design analyses for an IHX concerning fatigue, creep buckling, and creep ratcheting are described as a basis for critical discussion of some features of ASME Code Case N 47.

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Status Report on ASME Section III Subgroup on Design Plan for Code Changes to Implement Environmental Fatigue Evaluation Methods

ASME 2010 Pressure Vessels and Piping Conference: Volume 1 ◽

10.1115/pvp2010-25677 ◽

2010 ◽

Author(s):

Jack R. Cole ◽

John C. Minichiello

Keyword(s):

Action Plan ◽

Water Environment ◽

Nuclear Industry ◽

Status Report ◽

Reactor Water ◽

Class 1 ◽

Asme Code ◽

Code Changes ◽

Fatigue Evaluation ◽

The Impact

This paper provides a status report on the ASME Section III Subgroup on Design Environmental Fatigue Action Plan. The plan will direct development of ASME Section III Code [1] changes to provide guidance on acceptable methods for evaluating reactor water environment effects on reactor coolant pressure boundary components. Section III provides indication to the user that special consideration should be given for the environment to which a component is exposed, but does not provide guidance in addressing these effects. Discussions on needed ASME Code changes to address reactor water environmental effects have been under consideration by ASME Code bodies for many years. Due to the renaissance of the nuclear industry it is now apparent that Section III should be up-dated to address the missing guidance. The action plan was developed by the Subgroup on Design to coordinate activities necessary for Code bodies to act on proposed Code changes that will provide the user with the necessary tools to evaluate the effect of reactor water environment on fatigue life of components. The action plan lays out a strategy for a staged implementation of analysis methodologies, needed research, analysis guides, sample problems, and an assessment of the impact of the new rules upon the industry. The ultimate goal of the Subgroup on Design is to develop a new non-mandatory appendix that provides guidance to the user when evaluating reactor water environmental fatigue effects on Class 1 components.

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Progress in the compilation of the FK5

International Astronomical Union Colloquium ◽

10.1017/s0252921100074388 ◽

1978 ◽

Vol 48 ◽

pp. 421-432 ◽

Cited By ~ 7

Author(s):

W. Fricke ◽

W. Gliese

Keyword(s):

Status Report ◽

Magnitude Range

Abstract:Presented is a status report on work on FK5 giving information on the following items: (a) the intended increase of the number of fundamental stars and their magnitude range in FK5, (b) available material for the improvement of the system, (c) methods for the determination of systematic differences, (d) the determination of equator and equinox of FK5, and (e) the elimination of the motion of the FK4 equinox.

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Scanning tunneling microscopy of polymers: A status report

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100153622 ◽

1989 ◽

Vol 47 ◽

pp. 330-331

Author(s):

P.E. Russell ◽

I.H. Musselman

Keyword(s):

High Resolution ◽

Scanning Tunneling Microscopy ◽

Sample Surface ◽

Atomic Scale ◽

Constant Current ◽

Scanning Tunneling ◽

Status Report ◽

Tunneling Microscopy ◽

Research Issues ◽

Wide Range

Scanning tunneling microscopy (STM) has evolved rapidly in the past few years. Major developments have occurred in instrumentation, theory, and in a wide range of applications. In this paper, an overview of the application of STM and related techniques to polymers will be given, followed by a discussion of current research issues and prospects for future developments. The application of STM to polymers can be conveniently divided into the following subject areas: atomic scale imaging of uncoated polymer structures; topographic imaging and metrology of man-made polymer structures; and modification of polymer structures. Since many polymers are poor electrical conductors and hence unsuitable for use as a tunneling electrode, the related atomic force microscopy (AFM) technique which is capable of imaging both conductors and insulators has also been applied to polymers.The STM is well known for its high resolution capabilities in the x, y and z axes (Å in x andy and sub-Å in z). In addition to high resolution capabilities, the STM technique provides true three dimensional information in the constant current mode. In this mode, the STM tip is held at a fixed tunneling current (and a fixed bias voltage) and hence a fixed height above the sample surface while scanning across the sample surface.

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