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RESEARCH PAPERS

Hydrostatic Retesting of Existing Pipelines

[+] Author and Article Information
J. F. Kiefner, T. P. Forte

Battelle Columbus Laboratory, Mechanics Section, Columbus, Ohio 43201

J. Energy Resour. Technol 106(3), 362-368 (Sep 01, 1984) (7 pages) doi:10.1115/1.3231066 History: Received November 16, 1983; Revised March 30, 1984; Online October 22, 2009

Abstract

An analytical model is presented for predicting hydrostatic retest intervals in liquid pipelines which are subjected to frequent large pressure cycles. The model utilizes pressure cycle history, hydrostatic test history, and fatigue crack growth rate data for the pipe material to calculate time to failure for the largest possible defect which could have survived a previous hydrostatic test. An example problem is described which shows the value of maximizing the margin between test pressure and operating pressure in order to achieve long time intervals between tests.

Copyright © 1984 by ASME
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