Evaluation of the capacity of welded attachments to elbows as compared to the methodology of ASME Code Case N-318

Conference · Wed Jan 01 00:00:00 EST 1992

OSTI ID:5667676

Rawls, G B ^[1]; Wais, E A ^[2]; Rodabaugh, E C ^[3]

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1. Westinghouse Savannah River Co., Aiken, SC (United States)
2. Wais and Associates, Inc., Atlanta, GA (United States)
3. Rodabaugh (E.C.) and Associates, Hilliard, OH (United States)

This paper presents the results of a series of tests conducted to assess the capacity of various configurations of integral welded attachments. These tests are unique in that the attachments are welded to the outer radius of pipe elbows. The lug configurations tested include both rectangular and cross (cruciform) shapes. Both limit load and fatigue tests are performed on the lug-elbow configurations. The results of the limit load tests are presented as limit moments. The results of the fatigue tests are cycles-to-failure. Markl's equation is then used, with the fatigue results, to determine stress intensification factors. The limit moments and stress intensification factors are then compared to those developed using the methodology of ASME Code Case N-318. The level of conservatism in the Code Case methodology is then compared to the test results.

• Research Organization: Westinghouse Savannah River Co., Aiken, SC (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC09-89SR18035
• OSTI ID: 5667676
• Report Number(s): WSRC-MS-91-420; CONF-920631-13; ON: DE92009408
• Resource Relation: Conference: American Society of Mechanical Engineers pressure vessel and piping conference, New Orleans, LA (United States), 21-25 Jun 1992
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
42 ENGINEERING
WELDED JOINTS
MECHANICAL TESTS
CARBON STEELS
CRACK PROPAGATION
EVALUATION
FATIGUE
HEAT TRANSFER
HYDRAULICS
PIPES
STANDARDS
STRESSES
ALLOYS
ENERGY TRANSFER
FLUID MECHANICS
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICS
STEELS
TESTING
220200* - Nuclear Reactor Technology- Components & Accessories
420500 - Engineering- Materials Testing