Bragaw
# 1979 Brigthon
Medium density polyethylene pipe systems have been successfully used in North America and the United Kingdom for gas distribution In the 12-year period over which experience has been accumulated, field situations presenting various potential hazards have been analyzed to enable the pipeline engineer to anticipate the source of problems and thus, improve system safety. Fractographic analysis indicates that nine distinct fracture modes can be clearly recognized, each resulting from a different cause Each of the modes is illustrated and discussed
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A method for predicting the long-term service life or pressure of polyethylene piping system components has been developed based on rate process theory and validated by a nher of statistical tests. Burst data and life predic- tions for joints and fittings nade by seven manufacturers show lives which could not have...
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