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In-line Inspection Results Evaluation and Data Integration

Olympic Pipe Line CompanyFerndale to Renton 16” Project

OPS IMP WorkshopHouston, TX August 2001

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Outline

• Background

• Project OverviewData AnalysisExcavation and Repair CriteriaRepair Plan and Execution

• Summary of Repairs

• Testing of Cut Outs

• Project Issues

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Background

• Ferndale to Renton 16” ILI Project - a key element of Olympic’s Integrity Management Program

• Consistent with BP’s Business Values and HSE Goals of: No Accidents, No Harm to People, No Damage to the

Environment

• Unique when compared with other ILI Projects because Ferndale to Allen Segment Out-of-Service Schedule Driven Project High Staffing Levels Heavy Public and Municipal Involvement Three Types of ILI Tool Runs

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System Description

Castle Rock

Tacoma

Renton

Woodinville

Allen

Bayview

FerndaleCherry Point

Anacortes

Sea-Tac

Washington

Oregon

System Data

- Petroleum Products

- 400 miles long

- Four source refineries

- Eight terminal points

- 16” and 14” Main Line

- 20” Loop Line

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Project Overview

ILI Tool Runs

Project Execution

Repair Plan

Data Analysis

Repair Criteria

Data Integration

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Data Analysis

• Used Deformation and High Resolution MFL tools from Ferndale to Renton

• Ran an Ultrasonic tool from Ferndale to Allen

• Data Logs: – Graded and Correlated by ILI Tool Vendors

– Data Reviewed and Validated by:• BP Consultants

• Office of Pipeline Safety

• Consultants of Various Municipalities

– Applied Negotiated Evaluation Criteria

– Repair Plan / Documentation Prepared by Consultants

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Excavation and Repair Criteria

Dents B31.4 OPL 16”

Top Half of Pipe 6% 0.625% (0.100”)

Bottom Half 6% 4%

With Metal Loss Any Any

Locate at Welds Any Any

Ferndale to Renton 16”

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Repair Plan

• Scope Definition – BP / Consultants / OPS

• Engineering, Procurement & Construction – OPL / BP

• Dig Sheets – ILI Tool Vendor and Consultants

• Permitting – OPL / BP

• Dig Locates – Chain Crew Contractor

• Excavations – Mechanical Contractor

• Field Evaluation – Visual Inspection – BP / Consultants / ILI Tool Vendor

– NDE – NDE Contractor

• Repair Decision – BP / Consultants / OPS

• Documentation – Consultants

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Execution

• Office Staff Permitting Specialists Engineering & Procurement – OPL / BP Government & Public Affairs – BP

• Field Staff (full-time) ROW Access –Right-of-Way Agents Locates – Chain Crews by Consultant Construction Management – Coordinators by BP / OPL Digs – Mechanical Contractor crews Feature Evaluation

Tool Vendor Analysts NDE Crews Consultant

Others OPS and Consultants Various Municipalities

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Summary of Repairs

Repair Type Deformation MFL / Ultrasonic Other

Comp. Sleeve 21 4 0

Cutout 73 7 3

Re-coat 14 6 0

Total 108 17 3

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Testing of Cutouts

• To establish future criteria a select number of deformation cutouts were cycle tested.– ¼” or smaller

• Cyclic testing of 16” cut-outs – 30 yrs of service simulated

– No failures

• Hydrostatic testing of cutouts to be completed

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Project Issues

• Recognize project drivers early

• Allow adequate lead time to secure permits

• Appraise and evaluate each dig site for ROW access

• Identify and Prepare for External Influences – these will impact the:– Project Schedule– Staffing Levels – Cost