HYDROTESTING EFFECTS-CONCLUSION TESTS SUPPORT EFFECT OF LINE PIPE TESTING ON CRACK GROWTH

B. N. Leis, F. W. Brust Battelle Columbus Division Columbus, Ohio Full-scale tests of line pipe with patched through-wall flaws and part-through-wall flaws indicate that significant crack growth is possible as a result of repeated pipeline hydrotesting. These test results show that such growth may involve a significant fraction of time-dependent cracking and can cause failure at pressures well below those predicted by current methods.

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