ILI Processes and Procedures

The optimal ILI tool technology must be selected for the expected integrity threats, based on tool technology, pipeline characteristics, and experience.  Procedures must be in place for selecting and qualifying the ILI vendor, and interpreting and responding to the results of the assessment.We offer support in the development of ILI Processes and Procedures, including:

Dig List Preparation

  • Interpretation of ILI data
  • Development of response criteria
  • Preparation of dig list reports
  • Reports include a step-by-step process on why certain digs have been identified and selected for response based on required digs from the various applicable codes, standards, and regulations, and industry standard best practices.

Repair Recommendations

  • Repair recommendations consider the type and severity of defect, conformity with codes and standards, and industry best practices.

Verification Dig Analysis Support

  • Verification dig analysis support includes creating and maintaining feature depth verification data obtained from verification digs using various statistical analyses to gain an understanding of the performance of an ILI tool.

General On-Going Support

General engineering support services include assistance with problems such as, but not limited to:

  • Consultation on ILI tool and vendor selection
  • ILI speed excursions
  • Probability of detection (POD) issues
  • ILI sizing inaccuracies
  • Burst pressure issues related to various methods of assessments

With over 20 years of experience, Kiefner has the expertise to support your In-line Inspection qualification needs.


Applus+ is a specialist service provider of non-destructive examination and inspection services which are critical to ensuring the safety and integrity of the energy and industrial sector. Accordingly, please be informed that Applus+ and its affiliate companies, including but not limited to Applus RTD USA, Inc., Applus Velosi America, LLC, Applus K2 America, LLC, and Kiefner and Associates, Inc. are open for business.

Applus+ is deemed as an Essential and Critical Infrastructure service provider. The services provided by Applus+ ensure our client’s continuous safe operations, delivery of essential services to our end clients in these times of need, and supports compliance with local, state, and federal regulations—include our united mandate to continue providing Essential and Critical Infrastructure services.

Operating for over 85 years, Applus+ has responded to emergency situations in high consequence areas and at times when other suppliers have been unable to perform. We believe that we have not only demonstrated value but sincere commitment to quality and service. Applus+ will continue to show its unwavering support at the request of our clients to assist in maintaining operational continuity.

We would like to let you know what measures Applus+ is taking to ensure the health and safety of our employees, clients and suppliers.  We have activated our Business Continuity Plan and the purpose of this Plan is to ensure uninterrupted service. As the situation develops, our management and protocols will be adjusted, as required.

Applus+ has taken the following measures:

  • Active implementation of Center for Disease Control and Prevention (CDC) protocols.
  • Provided information to employees about the Coronavirus, its symptoms, and how to minimize its spread. Employees have been advised to avoid crowded areas and to limit social interaction, and have been trained on the correct hygiene, health and safety procedures.
  • Internal protocols have been implemented to follow all CDC guidelines for all who:
    • Have travelled internationally within the last 14 days
    • Have been in close contact with someone who has been confirmed infected with or is being tested for COVID-19
    • Have been in close contact with someone who is under self-quarantine.
    • Have any symptoms such as fever, coughing, and shortness of breath.
  • Effective 03/17/2020 short-term remote work guidelines for employees have been implemented.
  • Applus+ has increased the frequency of cleaning services in our facilities to ensure a clean and safe working environment.
  • Travel has been limited to essential client-required travel only, with severe restrictions in the case of high-risk destinations.

We will continue to monitor the situation in order to adapt in a timely and effective manner as the situation evolves. Our goal is to ensure that we fulfil our commitment to our clients and deliver the highest standards of service excellence, while at the same time keeping our workforce safe and healthy.

As always, you should feel free to contact us with any questions. Please email the team at for further assistance regarding the COVID-19 matter. To schedule services, continue to communicate with your Applus+ representative.

Thank you for your support and partnership,

Applus+ Management Team