Sh. Dai, FAILURE ANALYSIS AND LIFE PREDICTION OF A SET OF EXTRA HIGH-PRESSURE HEAT-EXCHANGERS CONTAINING DEFECTS, International journal of pressure vessels and piping, 70(3), 1997, pp. 197-200
Random sampling for inspection has been applied to an extra-high press
ure heat-exchanger. It was found a large number of etching pits and cr
acks were in existence on the outside surface of the extra-high pressu
re inner pipe of the double-pipe heat exchanger. These threaten safety
in production and constitute a hidden peril for the plant. Failure an
alysis and life prediction in this work provide proposals for guarante
eing safety. They have been adopted by the plant and have given a sign
ificant economic benefit. (C) 1997 Elsevier Science Ltd.