Technical Basis for ASME Section VIII Code Case 2235 on Ultrasonic Examination of Welds in Lieu of Radiography-Reference-Cited by-同舟云学术

Technical Basis for ASME Section VIII Code Case 2235 on Ultrasonic Examination of Welds in Lieu of Radiography

Published:2000-12-19 Issue:3 Volume:123 Page:338-345
ISSN:0094-9930
Container-title:Journal of Pressure Vessel Technology
language:en
Short-container-title:

Author:

Rana Mahendra D.¹,Hedden Owen²,Cowfer Dave³,Boyce Roger⁴

Affiliation:

1. Praxair, Inc., Tonawanda, NY 14151

2. ABB CE Nuclear Power, Windsor, CT 06095

3. Westinghouse Savannah River Co., Aiken, SC 29808

4. Factory Mutual Insurance Co, Johnston, RI 02919

Abstract

In 1996, Code Case 2235, which allows ultrasonic examination of welds in lieu of radiography for ASME Section VIII Division 1 and Division 2 vessels, was approved by the ASME B&PV Code Committee. This Code Case has been revised to incorporate: 1) a reduction in minimum usable thickness from 4″ (107.6 mm) to 0.5″ (12.7 mm), and 2) flaw acceptance criteria including rules on multiple flaws. A linear elastic fracture mechanics procedure has been used in developing the flaw acceptance criteria. This paper presents the technical basis for Code Case 2235.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Safety, Risk, Reliability and Quality

Link

http://asmedigitalcollection.asme.org/pressurevesseltech/article-pdf/123/3/338/5761705/338_1.pdf

Reference14 articles.

1. Cowfer, C. D., 1994, “ASME Section VIII Pressure Vessel Code Case (Proposed) Ultrasonic in Lieu of Radiographic Examination Technical Basis,” June 20, PVP Conference Minneapolis, MN.

2. WesDyne International, Inc, 1994, “Ultrasonic Examination of Heavy Section Test Blocks for Hydro-Processing Reactors Used by the Petroleum Industry,” (report distribution is restricted to PVRC Committee on NDE only).

3. Deputat, J., Mazurek, J., and Pawlowski, Z., 1970, “Evaluation of Flaw Size and Flaw Characteristics in Thick Welds with Ultrasonics,” 6th International Conference on Nondestructive Testing, Hanover, NH, Report No. H 10.

4. Cowfer, C. D., and Hedden, O. F., 1991, “Overview of the ASME Section XI Code Relating to NDE and Ultrasonic Examination Performance Demonstration,” ASME J. Pressure Vessel Technol., 113, pp. 170–173.

5. Buchanan, R. A., and Hedden, O. F., 1980, “Analysis of the Ultrasonic Examinations of PVRC Weld Specimens 155, 202, and 203 by Standard and Two-Point Coincidence Methods,” Weld. Res. Counc. Bull. 257.

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