2013
DOI: 10.1007/s11668-013-9765-3
|View full text |Cite
|
Sign up to set email alerts
|

CUI Failure of a Hot Oil Line Due to Intermittent Operations

Abstract: Insulated hot oil lines on high-temperature/ intermittent duty are typically vulnerable to increased risk from corrosion under insulation (CUI) failure. This paper presents the results of an investigation into a CUI failure at an onshore natural gas-processing plant and also discusses the key issues affecting intermittent duty. The inadequate coating was degraded during high-temperature duty (up to 240°C) followed by water ingress through degraded insulation mastic and sealant and resulting in (up to 3 mm) cha… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1

Citation Types

0
3
0

Year Published

2014
2014
2022
2022

Publication Types

Select...
4

Relationship

0
4

Authors

Journals

citations
Cited by 4 publications
(3 citation statements)
references
References 0 publications
0
3
0
Order By: Relevance
“…The coating used on the inlet line was noticed to have been heavily degraded, with clear flaking and rusting observed. It was inferred that the applied coating had a temperature tolerance below the piping operating temperature at 240 • C [109]. Ingressed saltwater was considered to be another contributing factor, especially when chlorides can concentrate when electrolytes evaporate at high temperatures.…”
Section: Coatingsmentioning
confidence: 99%
“…The coating used on the inlet line was noticed to have been heavily degraded, with clear flaking and rusting observed. It was inferred that the applied coating had a temperature tolerance below the piping operating temperature at 240 • C [109]. Ingressed saltwater was considered to be another contributing factor, especially when chlorides can concentrate when electrolytes evaporate at high temperatures.…”
Section: Coatingsmentioning
confidence: 99%
“…Crude oil and natural gas in highly corrosive environments contain carbon dioxide and hydrogen sulfide. The H 2 S-initiated corrosion nowadays is priority concern of researchers and engineer especially in subsea and pipeline system failures, due to the safety hazards associated with this toxic gas [1]. Therefore, Duplex stainless steels (DSS) grade 2205 (UNS S32205) was chosen because it is one of the corrosion resistances alloys (CRA) that consists of approximately 50% of austenite (face-centred cubic, FCC) and 50% of ferrite (bodycentred cubic, BCC) for optimization of alloying elements for microstructures and mechanical properties enhancement.…”
Section: Introductionmentioning
confidence: 99%
“…Therefore, numerous conventional and non-conventional inspection methods have been investigated with various degree of success. However, reliability and cost of the inspection remain major issues and an industry standard for CUI detection is yet to emerge [2].…”
Section: Introductionmentioning
confidence: 99%