stress corrosion cracking scc
Download
Skip this Video
Download Presentation
Stress Corrosion Cracking (SCC)

Loading in 2 Seconds...

play fullscreen
1 / 15

Stress Corrosion Cracking (SCC) - PowerPoint PPT Presentation


  • 255 Views
  • Uploaded on

Stress Corrosion Cracking (SCC). Josef Kopec, P.Eng. First SCC Inquiry. 1985-1992 one company 5 SCC ruptures First Inquiry 1993 Considering current knowledge of SCC Concluded that SCC managed properly. SCC Inquiry 1996. Two ruptures in 1995

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Stress Corrosion Cracking (SCC)' - olin


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
first scc inquiry
First SCC Inquiry
  • 1985-1992 one company 5 SCC ruptures
  • First Inquiry 1993
    • Considering current knowledge of SCC
    • Concluded that SCC managed properly
scc inquiry 1996
SCC Inquiry 1996
  • Two ruptures in 1995
  • Evidence SCC widespread on both gas and liquid pipelines
  • Since 1977 - 22 failures
    • 12 ruptures, 10 leaks
  • Provide a forum to share SCC knowledge
  • Knowledge shared around world
inquiry report recommendations in 6 key areas
Inquiry Report Recommendations in 6 Key Areas
  • SCC management program for all pipelines
  • Changes to the design of pipelines
  • Continued research
  • Establishment of SCC database
  • Improved emergency response practices
  • Continued information sharing
post scc inquiry
Post-SCC Inquiry
  • SCC Inquiry Report
  • NEB SCC Liaison Group
  • Community visits
  • SCC Management Plans submitted by All NEB regulated companies & reviewed
    • Meetings with numerous companies
neb scc liaison group
NEB SCC Liaison Group
  • Industry Groups and Regulators
  • Monitor progress of implementation of recommendations
  • SCC research - funding
  • CEPA/CAPP SCC database & trending
ongoing activities
Ongoing activities
  • Qualitative Risk Ranking of Companies SCC Susceptibility
  • SCC Management Plan Updates (1999)
  • Company Meetings
  • NEB SCC Liaison Group
canadian energy pipeline association cepa 2000 scc database trending report results
Canadian Energy Pipeline Association (CEPA) 2000 SCC Database Trending Report Results
  • note: physical inspection
significant scc reported december 2003
Significant SCC Reported(December, 2003)

Significant SCC reported to the NEB as per the requirements of Inquiry report

plans and priorities scc integrity issues
Plans and Priorities -SCC Integrity Issues
  • Continue to meet with companies
  • Continue to monitor incidents of SCC
  • Integrate SCC Management with Integrity Management Plan audits
scc in perspective
SCC in Perspective

Causes of in-service pipeline ruptures: 1985-95

General Corrosion

Other

Contact

Damage

(contact by

earth moving

equipment, etc.)

SCC

(Geotechnical landslides, etc.)

on going integrity issues
On-going Integrity Issues
  • SCC is one of many time dependent integrity concerns
  • On going monitoring of:
    • ERW seam problem
    • Corrosion -
      • General, Narrow Axial External Corrosion, Corrosion Fatigue
    • Hard Spots
management of integrity issues
Management of Integrity Issues
  • Management system audits
  • Require companies to perform Engineering Assessments
  • Information sharing with other Regulators and Industry
    • meetings
    • conferences
common goal
Common Goal
  • NEB regulated facilities and activities are safe and perceived to be safe
copies of scc inquiry report
Copies of SCC Inquiry Report

Regulatory Support Office

National Energy Board

(403) 292-4800

ad