IN-LINE INSPECTION (ILI) OPERATIONS SUPPORT

IN-LINE INSPECTION (ILI) OPERATIONS SUPPORT

OVERVIEW

Operators have several options for integrity assessments of their pipelines
include coating surveys, CIS, depth of cover, direct assessment, pressure
testing, and in-line inspection (ILI).

Among all integrity assessment methods, ILI yields the highest discovery of
anomalies and is the most costeffective method on a per-mile basis. ILI is
your best choice to meet your regulatory, safety, operational, and
reliability demands. ENTRUST Solutions Group has a team of highly qualified
and experienced engineers in multiple offices across North America who
provide ILI support to pipeline integrity.

With decades of operational and project experience, our professionals
provide expertise in pigging operations with utility pigs and ILI field
operations of various technologies (MFL, hard spots, ultrasonic metal loss
and crack detection, EMAT, deformation, and mapping), metallurgy, and GIS
data integration. ENTRUST can assist through the life cycle of the
inspection or perform specific tasks, including:

ILI FEASIBILITY STUDIES

  • Review of flow rates, operating pressures, pressure drops, and capability
    to handle liquids
  • Engineering review of the pipeline design, including but not limited to
    P&ID reviews, technical characteristics such as steel grade, type of
    welds, length, internal diameter, and elevation profiles.
  • Review of restrictions, bends, known ovalities, valves, and unbarred tees
    through which the ILI tool may need to negotiate should be identified per
    NACE SP0102-2010).
  • Plan development for the use of temporary (or permanent launchers and
    receivers) to run utility pigs (cleaning and gauge) and caliper pigs.
  • Mechanical analysis
  • Hydraulic analysis
  • Operational risk analysis
  • Required modifications
  • Modifications engineering design

PROJECT PLANNING AND SUPPORT

  • ILI run management, supervision and resources
  • ILI plan and procedures support
  • Tool procurement
  • Risk and threat assessments
  • Scheduling
  • Pre-inspection
  • Pipeline cleaning method selection
  • Potential debris sampling
  • Post-run analysis
  • Data quality assessment in the field and data acceptance
  • Contingency planning
  • Preliminary report evaluation and data analysis verification
  • Immediate conditions and permitting
  • Integrity dig management
  • ILI verification and validation per API Std 1163
  • Direct examination of anomalies including metallurgical analyses
  • NDT results evaluation, repair determination, and repair/replacement
    decisions

ILI SAFETY AUDITS

  • Revision of ILI procedures, work safety procedures, pipeline
    questionnaires, tool specifications, hazard assessments, and job safety
    analysis.
  • Gap analysis on the operator’s ILI procedure and comparison with 49 CFR
    Part 192/195, OSHA relevant regulations, SP0102-2017 (formerly NACE RP
    0102), In-line Inspection of Pipelines, API Std 1163 In-line Inspection
    Systems
  • Qualification, ANSI/ASNT ILI-PQ-2017 In-line Inspection Personnel
    Qualification and Certification, and relevant NTSB and PHMSA accident
    reports.
  • Report with gaps that could present potential safety issues and concerns,
    recommendations to improve the procedures, and opinion on whether
    procedures comply with applicable internal operational qualifications
    documents.

ILI FAILURE INVESTIGATION AND ROOT CAUSE ANALYSIS

When an accident or an ILI is determined to be inconclusive or incomplete
based on acceptance criteria, EN can perform a Root Cause Analysis (RCA)
process to find the causes of the accident or the origin of substandard ILI
data or failed ILI run. The root cause analysis process used by EN may
employ different tools such as: Paretto chart, the 5 whys method, fishbone
diagram, scatter plot diagrams, and the failure mode and effect analysis
tool. After the completion of the RCA, EN will recommend corrective actions
and proactive measures to prevent the problem from reoccurring in the
future.

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