ASME International

STRESS INTENSITY FACTOR AND K-FACTOR ALIGNMENT FOR METALLIC PIPES
 N STP-PT-073

Annotation

FOREWORD

The purpose of this report is to align stress intensification and flexibility factors for metallic pipes used in ASME's Pressure Piping Codes (B31) and Boiler and Presure Vessel Code (B&PVC) Section III Class 2 and Class 3 Piping. The alignment recommendations are provided with examples along with major features of the aligned and updated equations. Validation is provided by comparison to existing Codes, alternate guidelines and test data in the supporting annexes.

Many people have graciously provided comments and recommendations during the course of this project, including: Ron Haupt, Bill Koves, John Cates WFI, Phil Ellenberger, John Minichiello, Don Edwards and Jim Montague (Conoco Phillips), Chris Hinnant, Peter Vu, Glynn Woods, Brian Holbrook, David Creates, Patrick Marcotte, and Ev Rodabaugh.

Established in 1880, the American Society of Mechanical Engineers (ASME) is a professional not-forprofit organization with more than 135,000 members and volunteers promoting the art, science and practice of mechanical and multidisciplinary engineering and allied sciences. ASME develops codes and standards that enhance public safety, and provides lifelong learning and technical exchange opportunities benefiting the engineering and technology community. Visit www.asme.org for more information.

ASME Standards Technology, LLC (ASME ST-LLC) is a not-for-profit Limited Liability Company, with ASME as the sole member, formed in 2004 to carry out work related to new and developing technology. The ASME ST-LLC mission includes meeting the needs of industry and government by providing new standards-related products and services, which advance the application of emerging and newly commercialized science and technology and providing the research and technology development needed to establish and maintain the technical relevance of codes and standards. Visit www.stllc.asme.org for more information.