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gas_main - D.R.H Jones Materials Failure Analysis[Case...

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D.R.H. Jones, Materials Failure Analysis [Case Studies and Design Implications] Engineering Materials, Volume 3, Pergamon Press [1993] Background Early in the morning of January 10, 1985, a gas main supplying natural gas to the Manor Fields luxury apartment complex in the Putney District of London ruptured. Ignition of the effluent gas destroyed six units in the complex with minor damage to many more. The intensity of the blaze resulted from the gross calorific power of the fuel -methane [CH 4 ] and 8 occupants of the six apartment units…..
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Complex built in early 1930s - gas main construction utilized gray cast iron pipe of 150 mm interior diameter with a 11 mm wall thickness. Gas Main Fracture Failure Analysis Gas Main Fracture Failure Analysis vertical perspective of the location where the pipe rupture occurred
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The split collar was associated with the repair of a pipe rupture incident in 1982. Reinforced concrete roadway was dug up to effect repair but reinforcement not replaced - settling of the roadway followed. Gas Main Fracture Failure Analysis Gas Main Fracture Failure Analysis
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Details of the failure site - dimensions are in millimeters [mm]. Visual appearance of fracture surface consistent with the failure resulting in leakage of gas occurring only shortly before the time that the pipe was removed from the soil [post explosion]. Gas Main Fracture Failure Analysis Gas Main Fracture Failure Analysis
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Gas Main Fracture Failure Analysis Gas Main Fracture Failure Analysis 1.41 0.074 0.50 2.57 2.16 2.80 P S Mn Si C graphitic C elemental Composition of Specimens Cut from Failed Pipe Material Microstructure of Specimens Cut from Failed Pipe Material 100x
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