CUI (Corrosion Under Insulation) poses a significant risk to chemical plants. The presentation discusses CUI, identifying loops susceptible to CUI, and outlining a strategy to inspect for and manage CUI risks. A four-point strategy is proposed: 1) identify high risk loops, 2) perform inspections and repairs, 3) continue monitoring, and 4) update the strategy based on inspection findings. Implementing a risk-based CUI management program can increase plant reliability.
Ammonia Plant Technology
Pre-Commissioning Best Practices
GBHE-APT-0102
PICKLING & PASSIVATION
CONTENTS
1 PURPOSE OF THE WORK
2 CHEMICAL CONCEPT
3 TECHNICAL CONCEPT
4 WASTES & SAFETY CONCEPT
5 TARGET RESULTS
6 THE GENERAL CLEANING SEQUENCE MANAGEMENT
6.6.1 Pre-cleaning or “Physical Cleaning
6.6.2 Pre-rinsing
6.6.3 Chemical Cleaning
6.6.4 Critical Factors in Cleaning Success
6.6.5 Rinsing
6.6.6 Inspection and Re-Cleaning, if Necessary
7 Systems to be treated by Pickling/Passivation
API 570 Piping and Pipeline Inspectors Preparatory CoursepetroEDGE
This program is designed for in depth understanding of Inspection of piping and pipelines under operation and in-service as per API 570. This preparatory course will prepare inspectors to ensure piping and pipeline integrity in service. Practical aspect of design considerations, sizing, rating, piping and pipeline integrity, internal inspections, analysis, repair, pressure testing, and pipeline protection shall be discussed. The program shall also provide more information about types of piping system defects which may crop in during operation, repairs, maintenance and alteration. This will lead the participants to prepare them for ensuring good quality and safety of operating piping and pipelines so that they are safe in operations and ensure preventing any incident.
Ammonia Plant Technology
Pre-Commissioning Best Practices
GBHE-APT-0102
PICKLING & PASSIVATION
CONTENTS
1 PURPOSE OF THE WORK
2 CHEMICAL CONCEPT
3 TECHNICAL CONCEPT
4 WASTES & SAFETY CONCEPT
5 TARGET RESULTS
6 THE GENERAL CLEANING SEQUENCE MANAGEMENT
6.6.1 Pre-cleaning or “Physical Cleaning
6.6.2 Pre-rinsing
6.6.3 Chemical Cleaning
6.6.4 Critical Factors in Cleaning Success
6.6.5 Rinsing
6.6.6 Inspection and Re-Cleaning, if Necessary
7 Systems to be treated by Pickling/Passivation
API 570 Piping and Pipeline Inspectors Preparatory CoursepetroEDGE
This program is designed for in depth understanding of Inspection of piping and pipelines under operation and in-service as per API 570. This preparatory course will prepare inspectors to ensure piping and pipeline integrity in service. Practical aspect of design considerations, sizing, rating, piping and pipeline integrity, internal inspections, analysis, repair, pressure testing, and pipeline protection shall be discussed. The program shall also provide more information about types of piping system defects which may crop in during operation, repairs, maintenance and alteration. This will lead the participants to prepare them for ensuring good quality and safety of operating piping and pipelines so that they are safe in operations and ensure preventing any incident.
know more about cathodic protection in such manner like some our basis of regular life and where we used parts of machine which is affected by water,air or some other things.
Physical and technical basics of induction melting processesLeonardo ENERGY
In this course the physical and technical basics of induction melting processes and technologies will be explained. During the introduction the author will demonstrate along typical features of induction melting, why today induction melting is used in many industrial processes.
In the first part of this course the physical basics will be discussed by explaining the fundamental equations. The most important features of induction melting like, Joule heat effect, induced current and power density distribution in the melt, electromagnet forces, free melt surface deformation, turbulent melt flow and stirring will be explained.In the following the physical principle of the industrial most important induction melting furnaces, the induction crucible furnace and the induction channel furnace, will be shown.
In the second part of this course the author will explain, how the heat and mass transfer processes in the melt of induction furnaces are caused and influenced by the turbulent melt flow. Along industrial oriented examples it will be shown how numerical simulation based on sophisticated turbulent models can be used today for improved process understanding and design of the melting processes and devices.
The recapitulation of the most important features of induction melting processes and technologies will conclude this course.
Billet defects pinhole and blowhole formation prevention and evolutionJorge Madias
Pin holes as a surface defect, and blow holes as an inner defect, occur in billet / bloom / beam blank casting, particularly for Si-Mn killed steel cast with metering nozzle and oil lubrication. If they are present in abundance or have a large size, they may originate defects in the rolled products. Their characteristics, factors behind their formation, as well as usual processing conditions that promote their occurrence are discussed. Finally, the evolution of these defects during reheating and rolling is analyzed, with industrial examples
A review of effect of welding and post weld heat treatment on microstructure ...eSAT Journals
Abstract
Today getting high thermal efficiency in thermal and nuclear power plant is a big challenge. Many new material are developed. SA 335 grade 91 steel is modified high chrome-moly martenstitic steel. This material is having excellent toughness and high temperature creep strength. During welding, this material is having tremendous change in its microstructure and hence mechanical property. Many research works were done in this area. This paper discusses weld ability of P91 material. Effect of different welding process, type of filler wire, its chemical composition and type of flux is discussed in this paper. PWHT is necessary after welding of P91 steel. PWHT temperature and its duration affects phase transformation and mechanical properties of weld metal, HAZ and parent metal. Major focus is given on hardness, creep resistance and notch toughness.
Keywords - P91, Welding, Microstructure, Toughness, Creep, Hardness, PWHT
OCS Training - API 570 piping inspection courseMuanisa Waras
This five-day course will provide an intensive knowledge
regarding inspection, repair and alteration of Piping. The
course fulfills the need for deciding the inspection meth-
ods and Frequency of inspection based on the evaluation
of the condition of the Pipelines.
Entire course content will be consistent with the body of
knowledge for 570 examination. The course will help the
individuals to understand API Recommended Practice
570 along with other referenced standards like ASME.
The participants will be given a thorough coverage of API
570 with emphasis on understanding of ‘stated’ and
‘implied’ requirements in a simple straightforward manner
backed up with several practical examples and case
studies. This course will employ latest audio visuals and
animations and Mock quiz to give the candidates deep
understanding.
know more about cathodic protection in such manner like some our basis of regular life and where we used parts of machine which is affected by water,air or some other things.
Physical and technical basics of induction melting processesLeonardo ENERGY
In this course the physical and technical basics of induction melting processes and technologies will be explained. During the introduction the author will demonstrate along typical features of induction melting, why today induction melting is used in many industrial processes.
In the first part of this course the physical basics will be discussed by explaining the fundamental equations. The most important features of induction melting like, Joule heat effect, induced current and power density distribution in the melt, electromagnet forces, free melt surface deformation, turbulent melt flow and stirring will be explained.In the following the physical principle of the industrial most important induction melting furnaces, the induction crucible furnace and the induction channel furnace, will be shown.
In the second part of this course the author will explain, how the heat and mass transfer processes in the melt of induction furnaces are caused and influenced by the turbulent melt flow. Along industrial oriented examples it will be shown how numerical simulation based on sophisticated turbulent models can be used today for improved process understanding and design of the melting processes and devices.
The recapitulation of the most important features of induction melting processes and technologies will conclude this course.
Billet defects pinhole and blowhole formation prevention and evolutionJorge Madias
Pin holes as a surface defect, and blow holes as an inner defect, occur in billet / bloom / beam blank casting, particularly for Si-Mn killed steel cast with metering nozzle and oil lubrication. If they are present in abundance or have a large size, they may originate defects in the rolled products. Their characteristics, factors behind their formation, as well as usual processing conditions that promote their occurrence are discussed. Finally, the evolution of these defects during reheating and rolling is analyzed, with industrial examples
A review of effect of welding and post weld heat treatment on microstructure ...eSAT Journals
Abstract
Today getting high thermal efficiency in thermal and nuclear power plant is a big challenge. Many new material are developed. SA 335 grade 91 steel is modified high chrome-moly martenstitic steel. This material is having excellent toughness and high temperature creep strength. During welding, this material is having tremendous change in its microstructure and hence mechanical property. Many research works were done in this area. This paper discusses weld ability of P91 material. Effect of different welding process, type of filler wire, its chemical composition and type of flux is discussed in this paper. PWHT is necessary after welding of P91 steel. PWHT temperature and its duration affects phase transformation and mechanical properties of weld metal, HAZ and parent metal. Major focus is given on hardness, creep resistance and notch toughness.
Keywords - P91, Welding, Microstructure, Toughness, Creep, Hardness, PWHT
OCS Training - API 570 piping inspection courseMuanisa Waras
This five-day course will provide an intensive knowledge
regarding inspection, repair and alteration of Piping. The
course fulfills the need for deciding the inspection meth-
ods and Frequency of inspection based on the evaluation
of the condition of the Pipelines.
Entire course content will be consistent with the body of
knowledge for 570 examination. The course will help the
individuals to understand API Recommended Practice
570 along with other referenced standards like ASME.
The participants will be given a thorough coverage of API
570 with emphasis on understanding of ‘stated’ and
‘implied’ requirements in a simple straightforward manner
backed up with several practical examples and case
studies. This course will employ latest audio visuals and
animations and Mock quiz to give the candidates deep
understanding.
Catalog thiết bị đóng cắt Fuji Electric - Miniature Circuit Breakers BC-E Series - Fuji Electric
*********************************************************************
CTY TNHH HẠO PHƯƠNG - Nhà phân phối chính thức các thiết bị điện công nghiệp và tự động hóa của hãng FUJI ELECTRIC JAPAN tại Việt Nam
Xem chi tiết các sản phẩm Fuji Electric tại
http://haophuong.com/b1033533/fuji-electric
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
3. Leader
Patiphon Suksawat
Consultant
Wasan Cheeppensuk Atip Nualnet
CUI team
Komsan Bangkrut Nawa Bunsayang Narong Sakulprasitsiri
4. What is CUI (Corrosion Under Insulation) ?
- CUI is a particularly severe form of localized corrosion
that has been plaguing chemical process industries since the
energy crisis of the s forced plant designers to include much
more insulation in their designs
- Intruding water is the key problem in CUI Special care
must be taken during design not to promote corrosion by
permitting water to enter a system either directly or indirectly by
capillary action
5. What is CUI (Corrosion Under Insulation) ?
External damage
Carbon steels or Stainless
low alloy steels steels
Subject to stress
Subject to thinning
corrosion cracking
6. • CUI is the mainly problem in petrochemical
plant.
• Current Inspection Program is not consider
corrosion under insulation problem.
• Increase Reliability of Plant.
Reference TPE
7. Conclusion and Future action Plan
Inspection ( Visual and Ultrasonic Testing)
Risk Evaluation and Identification
List up EQ and Collection Data
Make Inspection Guide Line (Check Sheet)
Select Loop To Implement CUI
Study CUI Theory From API 581, 570
9. Insulated Piping Systems
Susceptible to CUI
1. Carbon steel piping systems, including those insulated
operating between (– C to C).
2. Austenitic stainless steel piping systems operating
between ( C– C).
20. Consequence of failure rating
Consequence
1 2 3 4 5
class
No / Slight Minor Local Major Extensive
Economics Damage Damage Damage Damage Damage
< 0.4 M 0.4 – 4 M 4 – 40 M 40 – 400 M > 400 M
No / Slight Multiple
Health & Safe Minor Injury Major Injury Single Injury
Injury Injury
No / Slight Minor Localized Major Massive
Environment
effect effect effect effect effect
Select 3
Example
- 20 -
21. Probability Score Table of Carbon Steel
Initial
Operating Wall thickness Internal corrosion External coil / External
Point Coating Insulation Type
Temperature surface feature / erosion rate Steam tracing environment
Status
> 175 0C
Full QA paint
0 Or Negligible Not present Inside Building
protection
< -5 0C
Perlite
Foamglass Rarely wetted
Low High Integrity
1 150 – 175 0C Closed cell >7.1 mm (<10% of the
( < 0.1 mm/y) design
Foam (right time)
type)
Normal QA Fiberglass 4 – 7.1 mm or
-5 – 500C paint Cal Sil, surface location Intermittently
Medium Medium Integrity
3 or protection Asbestos of penetrations wetted (~40% of
(0.1-0.4 mm/y) design
120 – 150 0C field weld at Mineral Rock through the time)
construction wool insulation
< 4 mm or
Permanently
surface at
wetted (e.g.
Unpainted or location of High Low Integrity
5 50 – 120 0C condensation,
Unknown reinforcement ( >0.4 mm/y) design
cooling tower
ring & other
dripping water
5+5+1+1+1+0+1 = 14 water traps
score Example
22. Probability Score Table of Stainless Steel
Operating Initial Coating External coil / External
Points Insulation Type
Temperature Status Steam tracing environment
Constantly > 150 Low chloride
0C or Constantly Full QA paint
0 insulation material Not present Inside Building
protection
< 50 0C (<10 ppm Cl-)
Rarely wetted
High Integrity
2 (<10% of the
design
time)
Permanently
Normal QA paint
protection field
wetted (e.g.
Medium Integrity
4 120 – 150 0C weld at condensation,
design
construction cooling tower
dripping water
Higher chloride Intermittently
Unpainted or Low Integrity
7 50 – 120 0C insulation material wetted (~40% of
Unknown design
(>10 ppm Cl-) the time)
score
- 22 -
24. CUI Confidence rating
CUI Confidence Questions Yes Interm NO
Cladding and Insulation conditions
-Cladding/Insulation fully maintained : Yes
+1 0 -1
0 -1 + 0 = - 1
-Cladding/Insulation normal : Interm
-Cladding/Insulation in poor condition : NO
Multiple reliable inspections for CUI have been carried been
carried out
-Frequent inspection and selective delagly fallowed by
+1 0 -1
appropriate remedial action : Yes
-Inspection irregular / not standard : Interm
- No proper inspections : No
Monitoring CUI promoting condition
- The pressure of all possible CUI promoting condition
(see susceptibility categories) has been established and
quantified : Yes
- The operating temperature is monitored and constantly +1 0 -1
in identified rouge and coating condition is know /
established : Interm
- The operating temperature is not established or the
coating condition is not know : No
score Example
- 24 -
30. Strategy flowchart
Strategy 3
Yes No
Piping > 8 in
100 % NDE and delegging of all Delegging of
susceptible area within 6 years susceptible within 6
years
Yes No
Significant
CUI found
Every Delag 100% Delag more selective area
6 years within 1 year Within 1 year Every
6 years
Significant
CUI found No
Repair and Paint Yes
100 % delegging , repair and paint Adjust confidence
within 1 year with +1
42. Strategy flowchart
Strategy 3
Yes No
Piping > 8 in
100 % NDE and delegging of all Delegging of
susceptible area within 6 years susceptible within 6
years
Yes No
Significant
CUI found
Every Delag 100% Delag more selective area
6 years within 1 year Within 1 year Every
6 years
Significant
CUI found No
Repair and Paint Yes
100 % delegging , repair and paint Adjust confidence
within 1 year with +1