# Presentation: 458363

## INGAA Direct Assessment Industry Workgroups

**Drew Hevle**
**El Paso Corporation**

## Overview

- External Corrosion Direct Assessment workgroup
- Sponsored by INGAA
- Many other participating organizations
- Validation efforts – PRCI, NGA, PG&E, AGA/GTI

## Overview

- Other workgroups
- Internal corrosion direct assessment
- SCC direct assessment

## Goals of workgroups

- Provide forum for participation for operators, contractors, and regulators
- Distribute information
- Coordinate research and validation efforts
- Identify gaps

## Goals of workgroups

- Discuss and propose new research
- Provide input to standards and regulatory development
- Develop and distribute protocols
- Identify new technologies and applications

## ECDA Workgroup

- ECDA workgroup headed by Drew Hevle of El Paso
- Latest meeting September 26 in Houston
- Conference calls being held bi-weekly
- Next meeting December 18 in Houston

## ECDA Workgroup Makeup

**ECDA distribution list ****includes**** approximately 125 members**
- 60 operators (includes gathering, transmission and distribution)
- 50 contractors/industry organizations
- 15 regulators (both state and federal)
- Some participants from outside the natural gas industry, some international, not all interest strictly in Title 49 changes
- Similar distribution for ICDA workgroup

## ECDA Workgroup (fun and exciting)

## ECDA Workgroup

- Status
- PRCI validation project updates from nine of the participating companies
- Development of an ECDA Guidebook to aid in converting the NACE standard RP 0502 into procedures and specifications

## ECDA Workgroup

- Status
- Update on NGA’s validation effort
- Soils model update
- Opportunities for site visits

## PRCI High-Impact Program

- Co-funded by DOT, managed by Fred Joyner
- Programs
- External Corrosion Direct Assessment
- Review of 2000/2001 data
- ECDA validation project
- Reliability-based risk assessment
- Soils model
- ECDA Manual
- Others

## PRCI High-Impact Program

- Companies were requested to volunteer pipeline segments that had been in-line inspected recently
- Most pipelines were large diameter coated transmission gas pipelines
- Protocol developed to apply NACE 0502 in a consistent manner

## PRCI High-Impact Program

- Consultants provided to conduct the indirect inspections and direct examinations in a consistent manner
- Additional tools evaluated, such as EUPEC RMS Delta survey, soils model, Miller DA meter, additional direct examinations made

## PRCI High-Impact Program

- Participating companies
- CenterPoint Energy
- Duke Energy/Union & Texas Eastern
- El Paso/Tennessee Gas
- Enbridge/Consumers
- Gulf South (2 segments)
- Panhandle (2 segments)
- SoCal (3 segments)
- Williams

## PRCI High-Impact Program

- Results
- Goal to complete direct examinations by Thanksgiving
- Periodic updates at ECDA workgroup meetings and conference calls
- PRCI will generate a final report available in 2004

## ECDA Workgroup

- Gaps identified
- Identify the limits of the NACE standard
- Shielding coating
- Rocky backfill
- Adjacent metallic structures

## ECDA Workgroup

- Gaps identified
- Confirmatory direct assessment
- PRCI project conducted with ILI and ECDA results
- Would be relatively simple to take this existing data and evaluate for effectiveness with CDA

## ECDA Workgroup

- Gaps identified
- New methods for calculating reassessment intervals
- Better and more efficient indirect assessment tools for bare and poorly coated pipelines

## ECDA Workgroup

- Gaps identified
- Need for consistency in application
- Need for standards for indirect inspections
- Issues with telluric currents and new inspection techniques

## ICDA Workgroup

- ICDA headed by Garry Matocha of Duke Energy
- Latest meeting October 20, 2003
- Next meeting scheduled for January 2004

## ICDA Workgroup

- Status
- NACE RP for ICDA (Dry Gas Systems) expected to go out for ballot this week
- Short uninspectable segments are portions of the systems which will be difficult to evaluate.  Additional work in this area is needed.

## ICDA Workgroup

- Status
- The CDA work group requested input regarding CDA procedures for internal corrosion.  This is currently under development by a smaller group which will circulate the proposed procedures to the larger work group for comment prior to the next meeting.

## SCCDA Workgroup

- SCCDA standard is still in the development stage
- NACE TG 273 is developing the standard
- Chair John Beavers, vice-chair Jim Marr
- Preliminary draft discussed at NACE Corrosion Technology Week in September in Pittsburgh
- No formal workgroup has been created yet

## Participation

- If you would like to participate in any of these groups, please contact
- ECDA – Drew Hevle
- drew.hevle@elpaso.com
- ICDA – Garry Matocha
- gmmatocha@duke-energy.com

## INGAA Direct Assessment Industry Workgroups

**Drew Hevle**
**El Paso Corporation**

## Slide 26