Menu
Search
Filters
Close
Menu

A Case Study-Caustic Gouging Of Boiler Tubes

Picture for A Case Study-Caustic Gouging Of Boiler Tubes
Available for download

Caustic corrosion is sometimes referred to as “caustic attack or “caustic gouging.” Corrosion of this type may result from internally fouled heat transfer surfaces and the presence of sodium hydroxide in the boiler water; and concentrated solutions of alkali where the normal washing of the tube metal ID is restricted after Departure from Nucleate Boiling (DNB), i.e., when the steam bubble release exceeds the rinsing rate.

Product Number: 51322-17780-SG
Author: Suresh Divi, Sri Krishna Chimbli
Publication Date: 2022
Industries: Coatings and Linings , Coatings
$0.00
$20.00
$20.00

Caustic corrosion also referred to as “Caustic attack” or “Caustic gouging” generally results from the fouled heat transfer surfaces on boiler tubes and due to the presence of sodium hydroxide in the boiler water. Once the caustic concentrations reached a certain level the caustic attack occurs and results in irregular wall thinning or gouging of the tube water side surface. The damage progresses through the tube wall until it ruptures. Such caustic corrosion failure was observed in one tube from a utility’s boiler. This paper presents the laboratory metallurgical analysis of the failed tube including welds and the process fluids and its effects on the caustic corrosion. The laboratory analysis includes chemical analysis, scale deposit analysis, metallography, and hardness tests.

Caustic corrosion also referred to as “Caustic attack” or “Caustic gouging” generally results from the fouled heat transfer surfaces on boiler tubes and due to the presence of sodium hydroxide in the boiler water. Once the caustic concentrations reached a certain level the caustic attack occurs and results in irregular wall thinning or gouging of the tube water side surface. The damage progresses through the tube wall until it ruptures. Such caustic corrosion failure was observed in one tube from a utility’s boiler. This paper presents the laboratory metallurgical analysis of the failed tube including welds and the process fluids and its effects on the caustic corrosion. The laboratory analysis includes chemical analysis, scale deposit analysis, metallography, and hardness tests.

Product tags
Also Purchased
Picture for A Further Look At The Impacts Of Corrosion Inhibitor On Scale Prevention
Available for download

A Further Look At The Impacts Of Corrosion Inhibitor On Scale Prevention

Product Number: 51322-17676-SG
Author: Qiwei Wang, Tao Chen, Hameed Al-Badairy, Sultan Alsubaie, Yasser Al-Jeshi, Mohammad Alsidan
Publication Date: 2022
$20.00

Scale and corrosion inhibitors are commonly used in many oil and gas production systems to prevent inorganic deposition and to protect asset integrity. Scale inhibitor products are based on organic compounds with phosphate or carboxylic functional groups such as amino phosphonates, phosphate esters, phosphino polymers, polycarboxylate and polysulfonates,1 as shown in Figure 1. These anionic groups have strong affinity to alkaline earth cations and can adsorb on the active growth sites of scale crystal (Figure 2), resulting in stopping or delaying the scale formation process.
A Case Study On Microbiologically Influenced Corrosion In Oil Producing Well Flowlines
Available for download

A Case Study On Microbiologically Influenced Corrosion In Oil Producing Well Flowlines

Product Number: 51322-17924-SG
Author: Amer Jarragh, Sandip Kuthe, Sharad Londhe, Akhil Jaithlya, Abeer Rashed, Nadine El-Kaouri
Publication Date: 2022
$20.00

Oil field operating company’s (1) flowline network in North and West Kuwait (NWK) has over 3000 wells connected through 6” carbon steel pipelines flowing from wellhead to the nearest Gathering Center (GC). Untreated wet crude is transported through the flowlines to GC’s directly or passing through the Remote Headers and Manifold (RHM) to GCs. In RHM, mixing of the wet crude takes place before it is sent to GC’s via transfer lines for further separation.  The flowlines are laid aboveground except at road crossings where they are buried. 
A Novel Methodology For Addressing Corrosion Under Insulation (CUI) Utilizing Corrosion Inhibitor Impregnated Self-Amalgamating Silicone Based Tape
Available for download

A Novel Methodology For Addressing Corrosion Under Insulation (CUI) Utilizing Corrosion Inhibitor Impregnated Self-Amalgamating Silicone Based Tape

Product Number: 51322-17931-SG
Author: Phillip Low
Publication Date: 2022
$20.00

Integrity management of corrosion under insulation (CUI) has historically and continues to be one of the biggest corrosion related challenges within the oil & gas, maritime, chemical and petrochemical industries.2 Corrosion of piping, associated flanges, pressure vessels and structural components from CUI is a commonly found phenomenon and if left undetected or not stringently managed can result in catastrophic leaks or explosions, equipment failure and periods of prolonged downtime due to repair or replacement. It is estimated around 40% to 60% of an operator’s pipeline maintenance budget is a result of CUI.3 
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support