WRC 432:1998

$33.15

Fatigue Strength Reduction and Stress Concentration Factors for Welds in Pressure Vessels and Piping: Part 1 and Part 2

Published By	Publication Date	Number of Pages
WRC	1998	67

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Description

Part 1: Fatigue Strength Reduction and Stress Concentration Factors for Welds in Pressure Vessels and Piping: Interpretive Review of Weld Fatigue-Strength-Reduction and Stress-Concentration Factors

The objectives of this report are to (1) clarify the current procedures for determining values of fatigue-strength-reduction factors (FSRFs), (2) collect relevant published data on weld-joint FSRFs, (3) interpret existing data on weld-joint FSRFs, (4) facilitate the development of a future database of FSRFs for weld joints, and (5) facilitate the development of a standard procedure for determining the values of FSRFs for weld joints. The main focus of this report is on weld joints in Class 1 nuclear pressure vessels and piping. However, relevant fatigue data on similar weld joints for other applications, such as bridges and offshore structures, also are reviewed and interpreted.

Part 2: Fatigue Strength Reduction and Stress Concentration Factors for Welds in Pressure Vessels and Piping: Fatigue-Strength-Reduction Factors for Welds Based on NDE

This report was developed in a project that was initiated within the Babcock & Wilcox Co., Nuclear Equipment Division. Its development is co-funded with the PVRC (Grant 97-22). It addresses applying a fatigue-strength-reduction factor (FSRF) to a weld surface, based on the non-destructive examination (NDE) that is performed. The development is focused on Class 1, pressure vessels of the ASME Boiler and Pressure Vessel Code, Section III, NB and NC-3200 and Section VIII Division 2 (ASME Code, 1997).

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