Menu
Search
Filters
Close
Menu

Save 20% on select titles with code HIDDEN24 - Shop The Sale Now

51317--9682-Monitoring of Stagnant and Low-flow Lines in Petroleum Refineries

Picture for Monitoring of Stagnant and Low-flow Lines in Petroleum Refineries
Available for download

A failure in one of the de-salter relief lines of the crude distillation unit. This paper describes the probable causes and the adopted remedies for the localized corrosion observed in the insulated relief line. Circumstantial evidence and failure morphology were used in arriving at the root cause for this failure. 

Product Number: 51317--9682-SG
ISBN: 9682 2017 CP
Author: Faisal Al-Refai
Publication Date: 2017
Industry: Petroleum Refining
$0.00
$20.00
$20.00

With new advancements in the petroleum refining processes the need for monitoring of corrosion on the new and old systems is also transforming. This paper describes the experience gained in monitoring of stagnant and low flow lines of a refinery in Kuwait. After witnessing a failure in one of the de-salter relief lines of the crude distillation unit a comprehensive plan was prepared to identify and address similar cases in the entire refinery which was a major challenge.This paper describes the probable causes and the adopted remedies for the corrosion observed in the insulated de-salter relief line which was of highly localized in nature. Circumstantial evidence and failure morphology were studied in arriving at the root cause for this failure. Although samples of the pipe showed signs of aggravated external corrosion at the failure location after removal of insulation the reason assigned for the failure was due to under-deposit corrosion mainly on the pipe internal side.Based on the findings and experience gained from the above case a methodology for the monitoring of other stagnant and low-flow lines using advanced NDT (LRUT profile radiography etc.) was prepared and is currently under implementation.Keywords: Under deposit corrosion MIC Stagnant and Low-flow Lines Advanced NDT

Key words: Under deposit corrosion, MIC, Stagnant and Low-flow Lines, Advanced NDT

With new advancements in the petroleum refining processes the need for monitoring of corrosion on the new and old systems is also transforming. This paper describes the experience gained in monitoring of stagnant and low flow lines of a refinery in Kuwait. After witnessing a failure in one of the de-salter relief lines of the crude distillation unit a comprehensive plan was prepared to identify and address similar cases in the entire refinery which was a major challenge.This paper describes the probable causes and the adopted remedies for the corrosion observed in the insulated de-salter relief line which was of highly localized in nature. Circumstantial evidence and failure morphology were studied in arriving at the root cause for this failure. Although samples of the pipe showed signs of aggravated external corrosion at the failure location after removal of insulation the reason assigned for the failure was due to under-deposit corrosion mainly on the pipe internal side.Based on the findings and experience gained from the above case a methodology for the monitoring of other stagnant and low-flow lines using advanced NDT (LRUT profile radiography etc.) was prepared and is currently under implementation.Keywords: Under deposit corrosion MIC Stagnant and Low-flow Lines Advanced NDT

Key words: Under deposit corrosion, MIC, Stagnant and Low-flow Lines, Advanced NDT

Product tags
Also Purchased
Picture for Chloride Stress Cracking of an Austenitic Stainless Steel Pipe Fitting in a Hydroprocessing Unit
Available for download

51317--9518-Chloride Stress Cracking of an Austenitic Stainless Steel Pipe Fitting in a Hydroprocessing Unit

Product Number: 51317--9518-SG
ISBN: 9518 2017 CP
Author: Hayrik Allahverdian
Publication Date: 2017
$20.00

Case study: Cracking occurred in a (UNS S32100) type austenitic stainless steel nozzle fitting at a low point in the reactor effluent piping in a Gasoil Hydrotreater unit following start up. Normal preventive measures had been taken.  The failed sample was removed for metallurgical analysis and determination of mechanism(s).
Picture for 11360 Corrosion in Crude Distillation Unit Overhead Operations: A Comprehensive Review
Available for download

11360 Corrosion in Crude Distillation Unit Overhead Operations: A Comprehensive Review

Product Number: 51300-11360-SG
ISBN: 2011 11360 CP
Author: Brian Chambers, Sridhar Srinivasan, Kwei Meng Yap, Mark Yunovich
Publication Date: 2011
$20.00

 The purpose of this paper will be to: (a) review published literature to characterize and classify speciation related to the types of impurities encountered in opportunity crudes; and (b) describe and categorize published case studies of corrosion in crude unit overhead operations.
Picture for Work Life Balance – Revisiting the Relationship Between Desalting Efficiency and Overhead Corrosion
Available for download

51317--9514-Work Life Balance – Revisiting the Relationship Between Desalting Efficiency and Overhead Corrosion

Product Number: 51317--9514-SG
ISBN: 9514 2017 CP
Author: James Noland
Publication Date: 2017
$20.00

It has been documented that improved desalting efficiency reduces the risk of corrosion and vice versa. This paper introduces a new way of using the desalting process to help control overhead corrosion. The end result is the corrosion engineer has a new tool to reduce the risk of salt formation.
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