Server maintenance is scheduled for Saturday, December 21st between 6am-10am CST.

During that time, parts of our website will be affected until maintenance is completed. Thank you for your patience.

Menu
Search
Filters
Close
Menu

Corrosion Under Pipe Supports - Beyond Simply Inspection

Corrosion Under Pipe Supports - Beyond Simply Inspection
Available for download

Petrochemical facilities and refineries consist of many miles of above ground piping that transports product between processing and storage units. These pipes are either supported at ground level or in multi-story pipe racks on varying types and sizes of supporting structures. A common problem these structures create is corrosion and erosion at the junction between the pipe and the support, which reduces the remaining wall thickness of the pipe and compromises the integrity of the entire system. 

Product Number: 51322-18155-SG
Author: Connor Tiegs
Publication Date: 2022
Industries: Pipelines, Tanks, and Underground Systems , Corrosion Monitoring and Control
$0.00
$20.00
$20.00

On-stream inspection techniques exist that inspect for Corrosion Under Pipe Supports (CUPS), also known as Touchpoint Corrosion. These include Electromagnetic Acoustic Transducer (EMAT), Guided Wave and others. These methods are effective at evaluating corrosion severity, especially at pipe touchpoints, without the need for lifting. Before their arrival it is necessary to perform a direct visual inspection and/or UT measurement at the touchpoint rather than at some distance away from it.   

These new methods allow operators to reduce the costs of performing inspections. However, to mitigate any identified problems, line lifting is still required at touchpoints to perform necessary repairs. 

Many pipe lifting methods have been developed or simply implemented that are unsafe, costly, or impractical, in many instances compelling operators to rely on them only in critical situations such as when there is a loss of containment. 

This paper discusses the conventional methods of line lifting, their benefits and shortcomings for various pipe sizes and layouts and introduces recommended engineering and safety requirements that support a proactive approach to addressing Corrosion Under Pipe Supports.

On-stream inspection techniques exist that inspect for Corrosion Under Pipe Supports (CUPS), also known as Touchpoint Corrosion. These include Electromagnetic Acoustic Transducer (EMAT), Guided Wave and others. These methods are effective at evaluating corrosion severity, especially at pipe touchpoints, without the need for lifting. Before their arrival it is necessary to perform a direct visual inspection and/or UT measurement at the touchpoint rather than at some distance away from it.   

These new methods allow operators to reduce the costs of performing inspections. However, to mitigate any identified problems, line lifting is still required at touchpoints to perform necessary repairs. 

Many pipe lifting methods have been developed or simply implemented that are unsafe, costly, or impractical, in many instances compelling operators to rely on them only in critical situations such as when there is a loss of containment. 

This paper discusses the conventional methods of line lifting, their benefits and shortcomings for various pipe sizes and layouts and introduces recommended engineering and safety requirements that support a proactive approach to addressing Corrosion Under Pipe Supports.

Product tags
Also Purchased
Picture for Corrosion Under Insulation And Atmospheric Corrosion In The Refinery Industry. An Accurate Approach To Estimate Corrosion Growth Rates, A Texas Refinery Case Study
Available for download

Corrosion Under Insulation And Atmospheric Corrosion In The Refinery Industry. An Accurate Approach To Estimate Corrosion Growth Rates, A Texas Refinery Case Study

Product Number: 51322-17751-SG
Author: Bernardo Cuervo, Mark McQueen
Publication Date: 2022
$20.00

External corrosion in uninsulated pipelines is normally able to be prevented by cathodic protection (CP). Generally, external corrosion on buried pipelines cannot occur if CP current is getting onto the pipe. CP is an electrochemical means of corrosion control in which the oxidation reaction in a galvanic cell is concentrated at the anode and suppresses corrosion of the cathode (pipe) in the same cell. For instance, to make a pipeline a cathode, an anode is attached to it.
Picture for Corrosion Under Insulation Performance Of Insulation Stand-Offs And Non-Metallic Membranes
Available for download

Corrosion Under Insulation Performance Of Insulation Stand-Offs And Non-Metallic Membranes

Product Number: 51322-17618-SG
Author: Ahmad Raza Khan Rana, Graham Brigham, Omar Chaar,George Jarjoura
Publication Date: 2022
$20.00

Corrosion under thermal insulations namely CUI (Corrosion under insulation) is among the key damage mechanisms which poses integrity risk to the hydrocarbon facilities. CUI is reportedly known as the reason behind 40-60% of failures in the facility piping whereas small bore piping (i.e., NPS < 4”) are even more sensitive to CUI failures, where up to 81% of reported failures in small-sized piping are known to be from CUI.  Monetary spending to inspect and fix CUI-related failures cost 10% of overall maintenance budget in a typical medium-sized oil refinery.  CUI risk is influenced by numerous operational and environmental factors which impedes its management in a typical AIM (Asset integrity management) program.
Picture for Coatings + Proceedings 2021-ALL Papers
Available for download

(Inspection) What Do You Really Need to Know to be a Good Coatings Inspector?

Product Number: 60-COAT_DEC21
Author: William D. Corbett
Publication Date: 2021
$20.00

The role of a Coating Inspector has evolved considerably over the past few decades, and the responsibilities have increased over what used to be a rather straightforward job: to verify that surface preparation and coating application meet the project specification requirements. Today there are week-long or multi-week basic and advanced coating inspection courses, specialty courses that are industry-specific (e.g., bridge, nuclear), courses that are substrate-specific (e.g., concrete coatings inspection) and even coating-specific (e.g., inspection of thermal spray coatings). 
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