NACE Direct Assessment Standards

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NACE Direct Assessment Standards

• Office of Pipeline Safety (OPS) Public Meeting
• November 4, 2003

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NACE International

• Has been developing industry consensus standards
  for over 30 years.
• In 2002, corrosion was the leading cause of
  failure for pipelines in the U.S.
• NACE has been working with the Office of Pipeline
  Safety to incorporate by reference NACE
  standards.
• NACE is working with industry and government to
  provide guidance on direct assessment.

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External Corrosion Direct Assessment (ECDA)

• The NACE ECDA process helps to locate areas where
  defects can form in the future, not just areas
  where defects have already formed, thereby
  helping to prevent future external corrosion
  damage. This standard covers the 4 components of
  ECDA Pre-Assessment, Indirect Inspections,
  Direct Examinations, and Post Assessment.
• NACE Standard RP0502 completed 2002

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Internal Corrosion Direct Assessment

• There are two standards under development for
  internal corrosion direct assessment (ICDA)
• Gas Transmission Pipeline Internal Corrosion
  Direct Assessment Methodology for Dry Gas
  Pipelines
• Internal Corrosion Direct Assessment for Wet Gas
  Pipelines

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Internal Corrosion Direct Assessment (ICDA)

• ICDA for dry gas transmission systems is
  described in terms of a four-step process
  analogous to the external corrosion direct
  assessment (ECDA) approach. Detailed examination
  of locations along a pipeline where an
  electrolyte such as water would first accumulate
  provides information about the remaining length
  of pipe.
• Task Group 293 (Projected completion 2004will be
  RP0104-2004)

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Internal Corrosion Direct Assessment (ICDA)

• Also based on the ECDA approach, this standard
  for ICDA in wet gas systems will address the gap
  in standards for the upcoming rulemaking on
  pipeline integrity for high-consequence areas and
  account for the differences between wet gas and
  dry gas systems.
• Task Group 305 (Projected completion 2005)

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External Stress Corrosion CrackingDirect
Assessment (SSCDA)

• SCCDA is a structured process for assessing and
  reducing the impact of external SCC on pipeline
  integrity. A pipeline company identifies a
  portion of its pipeline appropriate for direct
  assessment, and the standard provides guidance
  for selecting dig sites and for inspecting the
  pipe and collecting data during the dig.
• Task Group 273 (Projected completion 2004)

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NACE Technical Committees

• 30 Specific Technology Groups (STGs)
• Task Groups (TGs)
• Technology Exchange Groups (TEGs)
• Task Groups write standards
• Anyone who has an interest may participate
• Is a standard needed?

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Formation of Standards Committees

• Anyone May Propose a New Standard
• Complete Form
• Scope of Standard
• Need for Standard
• Consequence if Standard Not Produced
• Timeline for Completion
• STG Steering Committee Votes Majority Approval
  Required

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Task Group

• Task Group writes standard
• Members may volunteer chair approves
• Task Group small10-12 people
• May have outside advisers
• Normally meet at NACE annual conference and
  Corrosion Technology Week
• Much work done by e-mail

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Preparation of Draft

• Written by one person or several people
• Task Group reaches consensus
• Review in meetings
• Circulate by e-mail
• May or may not have formal ballot
• Draft submitted to NACE Headquarters

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Consensus Process

• NACE staff edits
• Canvass sent to Specific Technology Group (STG)
  members
• Ballot distributed to those who respond and
  others who have requested it
• Simultaneous NACE member editorial committee
  review

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Consensus Process

• Ballot period 6 weeks
• 50 response from STG List required
• All comments and negative votes sent to committee
  officers
• Task group must address all negatives and
  comments
• Consensus is NOT unanimity

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Consensus Process

• Task group resolves negative votes by
• making changes requested
• persuading voter of TGs point of view
• Written withdrawal of negatives required
• Negative(s) not withdrawn or technical changes ?
  reballot
• Negatives, task groups rationale attached
• Vote only on changes
• 90 affirmative to pass

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Final Approval and Publication

• Final editorial review
• Procedural approval by Specific Technology Group
  (STG) chair, Technology Coordinator, Technical
  Coordination Committee (TCC) chair
• Ratification by NACE Board of Directors
• Printed and available on Web site, CD-ROM

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Opportunities for Input

• Attend committee meetings
• Drafting stage
• Open Review
• Join committees
• Ask for a ballot and comment
• Announcements in Materials Performance, NACE
  News, and on NACE Web siteTechnical Committees
  page

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Types of NACE Standards

• Standard Recommended Practice
• Standard Test Method
• Standard Material Requirements
• ALL have some mandatory language and some
  recommending language

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Wording in Standards

• Shall and mustmandatory requirements
• Shouldrecommended but not mandatory
• Mayoptional
• Words defined in Foreword of every standard
• Careful evaluation of wording encouraged
• Engineering judgment used in some cases

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Wording in Standards

• Member editorial committee reviews wording
• OPS can adopt standards with should wording
• OPS can use mandatory language in regulation to
  supersede language in standard

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Resources for Committees

• Operating manual
• Balloting and publication manual
• Style Manual
• Officer Handbook
• All information on Web site

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Have an Impact on Standards

• Join technical committees
• Any NACE member may join
• Visit Technical Committees portion of NACE Web
  site, www.nace.org
• Join on-line via Members Only
• Send e-mail to tcc_at_mail.nace.org, or call
  Technical Activities at 281-228-6264

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Questions?

• Call Linda Goldberg at 281-228-6221
• or
• e-mail linda.goldberg_at_mail.nace.org