OPS Observations, Expectations, and Concerns

Zach Barrett (OPS)Zach Barrett (OPS)Direct Assessment Workshop Direct Assessment Workshop

November 4, 2003November 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 RP0502-2002 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 Validation through Direct Assessment

Workgroup DemonstrationsWorkgroup Demonstrations Standard ApplicabilityStandard Applicability Strengths and Limitations of the Strengths and Limitations of the

MethodologyMethodology Improvements to Pipeline Integrity Improvements to Pipeline Integrity

Resulting from Direct AssessmentResulting 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 Development of Detailed Process and Documentation for:Documentation for: Direct Assessment ApproachDirect Assessment Approach Staff & Contractor QualificationsStaff & Contractor Qualifications Bases for Key Decisions & CriteriaBases for Key Decisions & Criteria Employee & Contractor RolesEmployee & 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 DevelopmentSCCDA – 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 Establish Detailed Procedures for All

Activities Activities Data Collection/ManagementData Collection/Management Feasibility DeterminationsFeasibility Determinations Definition of RegionsDefinition of Regions Indirect InspectionIndirect Inspection

Successful Programs Establish Detailed Procedures for All Establish Detailed Procedures for All

Activities Activities Data Integration & Risk AnalysisData Integration & Risk Analysis Direct ExaminationDirect Examination Post-AssessmentPost-Assessment

Successful Programs Procedures AddressProcedures Address

ResponsibilitiesResponsibilities Task IdentificationTask Identification How & When Task is AccomplishedHow & When Task is Accomplished Communication of Task ResultsCommunication of Task Results Records & DocumentationRecords & 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