Tube failure of the heat exchanger E-20-128

Pertti Auerkari; Rami Pohja; Jorma Salonen

Tube failure of the heat exchanger E-20-128

Pertti Auerkari, Rami Pohja, Jorma Salonen

Research output: Book/Report › Report

Abstract

Based on inspection and measurements of tube samples, the root causes of tube failures in the heat exchanger E-20-128 have been assessed. The perforating damage on the external surface of the failed tube is a round 2mm hole that originated from an internal corrosion pit. The tube material shows otherwise no obvious deficiencies, but the inner surface is covered by relatively thick blistered oxide. The thick internal oxide that was formed at relatively high temperature appears to point to fabrication-related deviation from the intended tube condition.

Original language	English
Publisher	VTT Technical Research Centre of Finland
Number of pages	20
Publication status	Published - 2013
MoE publication type	D4 Published development or research report or study

Publication series

Series	VTT Research Report
Number	VTT-R-05631-13

Keywords

tube failure
corrosion

Cite this

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title = "Tube failure of the heat exchanger E-20-128",

abstract = "Based on inspection and measurements of tube samples, the root causes of tube failures in the heat exchanger E-20-128 have been assessed. The perforating damage on the external surface of the failed tube is a round 2mm hole that originated from an internal corrosion pit. The tube material shows otherwise no obvious deficiencies, but the inner surface is covered by relatively thick blistered oxide. The thick internal oxide that was formed at relatively high temperature appears to point to fabrication-related deviation from the intended tube condition.",

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AU - Auerkari, Pertti

AU - Pohja, Rami

AU - Salonen, Jorma

N1 - VTT-R-05631-13

PY - 2013

Y1 - 2013

N2 - Based on inspection and measurements of tube samples, the root causes of tube failures in the heat exchanger E-20-128 have been assessed. The perforating damage on the external surface of the failed tube is a round 2mm hole that originated from an internal corrosion pit. The tube material shows otherwise no obvious deficiencies, but the inner surface is covered by relatively thick blistered oxide. The thick internal oxide that was formed at relatively high temperature appears to point to fabrication-related deviation from the intended tube condition.

AB - Based on inspection and measurements of tube samples, the root causes of tube failures in the heat exchanger E-20-128 have been assessed. The perforating damage on the external surface of the failed tube is a round 2mm hole that originated from an internal corrosion pit. The tube material shows otherwise no obvious deficiencies, but the inner surface is covered by relatively thick blistered oxide. The thick internal oxide that was formed at relatively high temperature appears to point to fabrication-related deviation from the intended tube condition.

KW - tube failure

KW - corrosion

M3 - Report

T3 - VTT Research Report

BT - Tube failure of the heat exchanger E-20-128

PB - VTT Technical Research Centre of Finland

ER -

Tube failure of the heat exchanger E-20-128

Abstract

Publication series

Keywords

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Cite this