OPS Observations, Expectations, and Concerns Zach Barrett (OPS) Direct Assessment Workshop November 4, 2003

Observations Not Always Practical To Inline Inspect   Small Diameter Lines   Telescoping Lines (Storage Fields)   Short Radius Bends   Crossover Lines   Adverse Flow Conditions

Observations Not Always Practical To Pressure Test   Supply Concerns   Water Availability and Disposal   Internal Corrosion Concerns   No Quantification of Future Corrosion Risk

The Landscape is Changing Individual Cathodic Protection and Coating Surveys   Long History of Operator Use Evolving into “Direct Assessment”   Formalized Process   Integration of Data

The Landscape is Changing Pipeline Safety Improvement Act of 2002   Includes Provisions for Direct Assessment Pending Gas Integrity Management Rule   Includes Direct Assessment

The Landscape is Changing NACE Developing DA Recommended Practices   RP External Corrosion Final   Internal Corrosion Dry/Wet Gas   Stress Corrosion Cracking

OPS Concerns Validation of Direct Assessment Methodology   Are Standards Appropriate   Will Direct Assessment Identify Threats to Pipeline Integrity   Repeatability of Process and Results

OPS Concerns Validation of Direct Assessment Methodology   Establishment Excavation Criteria   Reassessment Interval Justification

OPS Concerns Indirect Assessment Tool Limitations not well Defined (Probability of Detection)   Important for Tool Selection   Critical for Setting Reassessment Interval   Needs Field Validation

OPS Expectations Validation through Direct Assessment Workgroup Demonstrations Validation through Direct Assessment Workgroup Demonstrations  Standard Applicability  Strengths and Limitations of the Methodology  Improvements to Pipeline Integrity Resulting from Direct Assessment

OPS Concerns Consistency in Application of Assessments   Critical for Repeatability of Results   Successful Monitoring of Non-excavated Indications

OPS Expectations Development of Detailed Process and Documentation for: Development of Detailed Process and Documentation for:  Direct Assessment Approach  Staff & Contractor Qualifications  Bases for Key Decisions & Criteria  Employee & Contractor Roles

OPS Concerns Data Availability   DA Requires Complete and Reliable Data   Data Must Be Acquired Where Lacking   May Result in Additional Direct Examinations

OPS Concerns Existence of Mature Data Management Processes   Acquire, Store, Retrieve   Data Quality - Verification   Crucial to Effective Data Integration/Analysis

OPS Expectations Development of Effective Data Management System   Processes and Procedures Key   Data Collection, Storage, Retrieval   Data Integration   Data Quality/Control

OPS Concerns Proper NDT Methods for Direct Assessment   Important for Effective Data Integration/Analysis   Crucial for Identifying Proper Preventive or Mitigative Actions   Key to Effective Reassessment Interval

OPS Expectations Development of Effective DA Process and Procedures   Identifies Integrity Threat   Conservative in Consideration of Full Range of Integrity Threats   Provides Quality Data for Future Analysis

OPS Concerns Timeliness of Standard Development   Key to Ensuring Quality and Consistency   Developing for: ICDA – Wet/Dry Still Under Development SCCDA – Still Under Development

OPS Expectations Standard Development   Should Follow ECDA Path for Evaluation/Validation   Update Standards as Experience Demands   Provide Detailed Guidance Where Appropriate

Successful Programs Establish Detailed Procedures for All Activities Establish Detailed Procedures for All Activities  Data Collection/Management  Feasibility Determinations  Definition of Regions  Indirect Inspection

Successful Programs Establish Detailed Procedures for All Activities Establish Detailed Procedures for All Activities  Data Integration & Risk Analysis  Direct Examination  Post-Assessment

Successful Programs Procedures Address Procedures Address  Responsibilities  Task Identification  How & When Task is Accomplished  Communication of Task Results  Records & Documentation

Successful Programs Demonstrate Effectiveness   Aggressive Excavation Criteria   Data Integration   Comparisons with Excavation Findings   Re-assessment Results

Successful Programs Documentation   Identifies and Provides Justification for Assumptions   Evidences Compliance with Gas IM Rule   Provides Detailed Explanation When Standards not Followed   Details are Important

Path Forward Continued Participation in DA Demonstration Projects Continued Support for Standards Development Improve from Lessons Learned