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

99383 ANALYSIS OF DISSIMILAR WELDS EXPOSED TO HIGH TEMPERATURE H2/H2S CONDITIONS IN A HYDRODESULFURIZING (HDS) UNIT

Picture for 99383 ANALYSIS OF DISSIMILAR WELDS EXPOSED TO
Available for download
Product Number: 51300-99383-SG
ISBN: 99383 1999 CP
Author: J. D. Dobis, L. E. Penuela and J. G. Chirinos
Industry: Materials Selection and Design
$0.00
$20.00
$20.00
In high temperature applications, dissimilar welds made with nickel-base alloy filler metals provide extended service lives as compared to similar welds made with stainless steel filler metals. Although considerable refinery experience exists, it is difficult to find published information for pressure boundary welds made with nickel-base filler metal in hot hydrogen and/or H2S services. The Amuay Refinery has used nickel base alloy filler metals to join clad piping components in a number of piping applications. This paper details the results of an analysis of clad 1 1/4 Cr- 1/2 Mo steel hydroprocessing reactor effluent piping samples removed from service to assess the long term effects of hydrogen and H2S on the dissimilar weld. Results of mechanical testing and metallurgical analysis reveal that no significant loss in properties occurred. Details of the weld procedures and weld joint design are provided. Keywords: Dissimilar Metal Welds (DMW), sulfidation, hydrogen, H2/H2S, hydroprocessing, hydrotreating, hydrodesulfurizer (HDS), nickel, stainless steel, reactor, effluent, clad pipe, cladding, sensitization, stress corrosion cracking (SCC), polythionic acid SCC (PSCC), intergranular corrosion.
In high temperature applications, dissimilar welds made with nickel-base alloy filler metals provide extended service lives as compared to similar welds made with stainless steel filler metals. Although considerable refinery experience exists, it is difficult to find published information for pressure boundary welds made with nickel-base filler metal in hot hydrogen and/or H2S services. The Amuay Refinery has used nickel base alloy filler metals to join clad piping components in a number of piping applications. This paper details the results of an analysis of clad 1 1/4 Cr- 1/2 Mo steel hydroprocessing reactor effluent piping samples removed from service to assess the long term effects of hydrogen and H2S on the dissimilar weld. Results of mechanical testing and metallurgical analysis reveal that no significant loss in properties occurred. Details of the weld procedures and weld joint design are provided. Keywords: Dissimilar Metal Welds (DMW), sulfidation, hydrogen, H2/H2S, hydroprocessing, hydrotreating, hydrodesulfurizer (HDS), nickel, stainless steel, reactor, effluent, clad pipe, cladding, sensitization, stress corrosion cracking (SCC), polythionic acid SCC (PSCC), intergranular corrosion.
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 07568 Selection of Dissimilar Metal Welds in Severe Environments for Today's Petrochemical Plants
Available for download

07568 Selection of Dissimilar Metal Welds in Severe Environments for Today's Petrochemical Plants

Product Number: 51300-07568-SG
ISBN: 07568 2007 CP
Author: Barry Messer, Shawn M. Seitz, Adam Gray, Doug Roth, and Terry Phillips
Publication Date: 2007
$20.00

Practical dissimilar metal welds (DMW) guidelines for today’s petrochemical plants that address weldability, selection of filler metal, and weld procedure qualification. Case histories of industry use of DMW are also presented.
Picture for 10245 Susceptibility of Nickel Based Alloy of Dissimilar Metal Butt Welds
Available for download

10245 Susceptibility of Nickel Based Alloy of Dissimilar Metal Butt Welds

Product Number: 51300-10245-SG
ISBN: 10245 2010 CP
Author: Takuya Fukumura and Nobuo Totsuka
Publication Date: 2010
$20.00
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).
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