Contact Us
Contact Us

4 min read

I3P Reviews: Now Required in the Gulf of Mexico

The oil and gas industry in the Gulf of Mexico is constantly evolving, with new regulations and requirements emerging to ensure safety, efficiency, and environmental stewardship. One of the latest mandates gaining attention is the I3P (Independent Third-Party) Review.  This article aims to provide a comprehensive overview of I3P Reviews, explaining their importance, the reason for the mandate, processes, and implications for project managers, drafters, and engineers in the region.  

  1. What are I3P Reviews?
  2. Reason for the I3P Mandate in the Gulf of Mexico
  3. Why I3P Reviews are Essential
  4. How to Prepare for I3P Reviews
  5. Conclusion

What are I3P Reviews?

I3P Reviews, or Independent Third-Party Reviews, are assessments conducted by external experts to ensure that engineering designs and project plans meet stringent safety, environmental, and operational standards. These reviews are becoming mandatory for projects in the Gulf of Mexico, aiming to enhance oversight and mitigate risks associated with complex engineering projects.

Reason for the I3P Review Mandate in the Gulf of Mexico

Operations in high-pressure, high-temperature (HPHT) environments are relatively new on the U.S. Outer Continental Shelf (OCS) and involve the use of cutting-edge equipment. Due to the industry's limited experience with HPHT environments, there are few specific standards for HPHT equipment and operations. This necessitates the Bureau of Safety and Environmental Enforcement’s (BSEE) meticulous case-by-case review of HPHT projects. The proposed rule aims to provide regulatory certainty for all stakeholders regarding BSEE’s review process for HPHT projects. It clarifies the Deepwater Operations Plan (DWOP) process and formalizes existing BSEE policy and guidance documents, resulting in a cohesive and structured approach for reviewing HPHT projects. Additionally, it enhances safety by mandating Independent Third-Party (I3P) reviews and verifications for certain conceptual plans. As a rule deemed insignificant under Executive Order 12866, it does not require an analysis of regulatory alternatives.

Click below to download the Initial Regulatory Impact Analysis and learn more about the baseline assumptions, energy  effects, and cost factors of the analysis.

Why I3P Reviews are Essential

Providing Regulatory Certainty

The proposed rule aims to provide regulatory certainty for all stakeholders involved in high-pressure, high-temperature (HPHT) projects by clarifying the requirements for plan submission and content. With clearer guidelines, the likelihood of needing revisions or additional information is reduced. This streamlining of processes helps ensure that project designs and submissions are more robust and less prone to delays, thus facilitating smoother project execution.

Enhancing BSEE’s Understanding of Novel Technologies

I3P (Independent Third-Party) Reviews play a crucial role in promoting the Bureau of Safety and Environmental Enforcement's (BSEE) understanding of novel or complex technologies. By verifying plans through independent experts, the BSEE can gain deeper insights into the reliability and potential failure causes of new and unusual technology (NUT). This enhanced verification process not only supports the BSEE’s mission to uphold safety and environmental standards but also fosters innovation by ensuring that new technologies are thoroughly vetted.

Streamlining and Standardizing Review Processes

One of the significant benefits of the I3P provisions is the standardization and streamlining of BSEE's review processes and operators’ submissions. By implementing a cohesive approach to reviewing HPHT projects and requiring I3P analysis and verification, the proposed rule ensures that submissions are consistent and comprehensive. This reduces the administrative burden on both operators and regulators, leading to more efficient and timely project approvals.

Improving Reliability and Safety

The enhanced reporting requirements for I3P reviews, particularly concerning NUT failures, provide BSEE with a better understanding of the reliability of new technologies and the possible causes of failure. This information is vital for continuous improvement in safety protocols and operational standards. By identifying and addressing potential risks early, I3P Reviews help to mitigate hazards and enhance the overall safety of HPHT operations.

Justified Costs for Significant Benefits

Although the annualized costs associated with the proposed rule are estimated at $2.9 million (discounted at 3% or 7%), these costs are justified by the significant benefits. The improvements in regulatory certainty, understanding of novel technologies, and streamlined processes collectively contribute to safer and more efficient HPHT operations. These benefits, while not easily quantifiable due to the lack of relevant data, represent a substantial advancement in the regulatory framework governing the development and operation of HPHT environments.

By incorporating these elements, I3P Reviews not only fulfill regulatory requirements but also drive the industry towards higher standards of safety, efficiency, and innovation.

How to Prepare for I3P Reviews

Understanding the Review Process

To successfully navigate I3P Reviews, it is essential to understand the review process. Typically, the process involves several stages, including the selection of an independent reviewer, submission of project documentation, detailed evaluation, and feedback. Project managers and engineers should familiarize themselves with these steps and ensure that their documentation is thorough and up-to-date.

Collaboration and Communication

Effective collaboration between internal teams and third-party reviewers is key to a successful I3P Review. Open and transparent communication ensures that all parties are aligned and that any issues are addressed promptly. Project managers should facilitate this collaboration by organizing regular meetings and maintaining clear communication channels.

Continuous Learning and Adaptation

The introduction of I3P Reviews represents a learning opportunity for the industry. Project managers and engineers should stay informed about evolving requirements and best practices related to I3P Reviews. Continuous professional development and training can help teams adapt to these changes and leverage the benefits of independent assessments.


In conclusion, the implementation of Independent Third-Party (I3P) Reviews in the Gulf of Mexico marks a significant advancement in ensuring safety, regulatory certainty, and innovation in the oil and gas industry. These reviews address the challenges of high-pressure, high-temperature environments and novel technologies, streamlining regulatory processes and enhancing equipment reliability and safety. For project managers, drafters, and engineers, understanding and preparing for I3P Reviews is essential for creating robust project plans and fostering effective collaboration with independent reviewers. Ultimately, I3P Reviews contribute to safer, more efficient operations, driving the industry towards higher standards of excellence and environmental stewardship.

Contact PES Today


Oil and Gas and Sulfur Operations on the Outer Continental Shelf HPHT and Subpart B: Initial Regulatory Impact Analysis

Other articles

Why You Need a Civil Engineer During Disaster Recovery - Discover the critical role of civil engineers in disaster recovery. Learn how they tackle challenges and create opportunities for resilient infrastructure.

9 Reasons You Need a Structural Engineer - A structural engineer can help ensure the safety of your building, identify any potential problems, and recommend solutions using structural analysis. 

What Is Manufacturing Engineering? - What Manufacturing Engineers do and what the scope of their work entails to complete their jobs successfully

About Practical Engineering Solutions

Practical Engineering Solutions will always be dedicated to providing top-notch customer service to meet our industry demands.

We set ourselves apart with our consistency and timely turnarounds. We are always committed to being responsive to our clients, KEEPING OUR PROMISES, making delivery schedules, and standing by our designs!

From conceptdesign, and engineering, to project management and integrity services. We are your gateway to your journey's engineering endeavors. Including oil & gas, hemp & CBD, and food industries.

Providing services focusing in Facilities EngineeringTurn-Key SolutionsHemp FacilitiesFood Plant EngineeringManufacturingEngineering Services and Drafting & Design.