Compliance, Uptime, Efficiency.

Providing clarity and enabling decisions through subsea integrity engineering.

Achieve compliance
Achieve compliance
Increase production uptime
Increase production uptime
Execute Efficiently
Execute Efficiently

We aim to become the preferred independent global provider of subsea integrity engineering services by offering the most technically innovative solutions to our industry through an organization and culture committed to excellence.

Clarus Subsea Integrity was established from the Integrity Management division of 2H Offshore.

Whilst working under the 2H banner, the IM team gained over a decade of subsea expertise and pioneered many of the standards, tools and methods used in offshore integrity management today. The team, the processes and the expertise has been spun off as Clarus Subsea Integrity; a new Acteon operating company offering a more focused engineering approach to subsea integrity management covering all in-water equipment that maintains the high technical expertise and customer focused approach of 2H.

Clarus is an independent subsea integrity engineering services provider. We strive to maximize production uptime by using efficient integrity management processes and providing clear information about the condition and performance capabilities of offshore assets. The Clarus approach enables informed, confident decisions about subsea equipment integrity in compliance with performance objectives.

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Our Services

Clarus offers custom integrity solutions based on our client specific assets and needs. We do this by applying our advanced engineering services and tools for a variety of in-water systems including hull and moorings, risers, flowlines and pipelines, subsea structures and control systems. Our services are designed to provide clarity in equipment health, enable proactive response to integrity issues, and optimize resource utilization.



Hull & Mooring - Fixed Jackets, Floating Hulls, Mooring Lines

Clarus integrity plans can ensure that the combination of metal loss, fatigue, and operational changes are not working against the reserve strength in extreme events.

Risers, Flowlines and Pipelines

Clarus can manage issues ranging from corrosion and flow assurance through to structural dynamics, and can ensure the most efficient use of resources through the design life and beyond.

Subsea Structures

Clarus can assure integrity for subsea structures, such as trees, manifolds and sleds, by evaluating chemical, mechanical, and structural aspects.

Subsea Controls

From the topsides HPU to the SCM, we go beyond inspection using independent subsea condition monitoring to improve uptime by predicting failures before they occur.

Cathodic Protection
Asset Sale Engineering
Data Management
Integrity Plans
Corrosion Assessments
Subsea Condition Monitoring
Life Extension & Fitness for Service

iCUE Integrity Management Web Portal

An intuitive web-based portal that provides one access point for all your integrity needs, from design to decommissioning. Enabling meaningful status overviews and critical information on any of your components in under 5 clicks. ICUE is Clarus' new, innovative software designed to maximize operational readiness, improve efficiencies, and demonstrate compliance.​


Cathodic Protection

Cathodic Protection

Clarus has managed cathodic protection (CP) systems for all types of subsea equipment such as risers, flowlines, pipelines, and subsea hardware for over 12 years. We offer CP services for the entire asset lifecycle, including independent full field CP design verification to mitigate early life CP anomalies, and managing CP surveys and assessments to support IM and life extension goals.

anode sled

Design & Verification

Our project phase offering includes cathodic protection design, and independent verification of CP design of pipelines and subsea structures based on industry codes DNV-RP-F103, DNV-RP-B401, ISO-15589-2.

Inspection & Planning Management

Our operational project support covers turnkey inspection solutions: risk-based planning, offshore execution, and engineering assessments.

Anomaly Management

Clarus provides anomaly management and engineering assessments to identify and implement appropriate mitigation and remediation solutions.

Life Extension & Continued Service

Our life extension and continued service offerings include condition assessment utilizing design and historical data review, remaining life assessments, and retrofit solutions.

Asset Sale Engineering

Asset Sale Engineering

Asset sales are costly ventures for companies and require a clear understanding of the asset’s condition and operating capacity. Clarus has the expertise, tools and experience to help buyers and sellers get a firm grasp of the key factors that could affect the asset’s remaining service life and the potential to extend beyond its original service life.

Understand Asset Performance Data

Asset Condition Assessment

Clarus conducts risk assessments on subsea infrastructure to provide an asset condition history and risk overview. We have done this for single assets and for larger asset portfolios.

Service Life Evaluation

Clarus performs fitness for service engineering to demonstrate the structural integrity of asset components. The engineering assessment will determine whether replacement of components is required for continued service.

Life Extension Feasibility

Clarus conducts life extension engineering and evaluations based on as-is condition of key components to determine whether service life can be extended.

Data Management & Handover

Clarus consolidates asset data into a GUI interface called iCUE that allows streamlined viewing and review of asset condition. iCUE allows both the buyer and seller to have clear visibility of asset data and a smooth data handover.

Data Management

Data Management

Quick access to quality and relevant component data allows Clarus to perform sound engineering assessments and assist clients in making informed decisions to manage asset risks. Data compilation begins at the front end engineering design stage and continues through decommissioning.   

data management infographic


Clarus offers a unique data management solution in iCUE, a user-friendly web based integrity management portal that allows structured data organisation and provides visual summaries of integrity information such as risks, anomalies, inspection plans and reports, condition monitoring KPIs, and more. The information can be viewed from the component level to an asset level for quick navigation. All the relevant integrity documents from design and operations can be stored directly in iCUE or linked to a document control system providing a fast route to the details necessary for informed decisions. A few key modules include:

Design, Fabrication, Installation, and Operation (DFIO) Dossier

The DFIO dossier provides a succinct listing of all documentation related to design, fabrication, installation, and operation of the system. The DFIO uses hyperlinks to allow a user to drill down quickly from a system overview to component details in a few clicks of the mouse. Examples of documents included are design basis, analysis reports, drawings, P&IDs, fabrication data books, inspection and anomaly reports, and operational MOCs. 

FlexJoint Integrity

The FlexJoint integrity module is an interactive tool for condition monitoring. By using key performance indicators and visual inspection results; FlexJoint integrity can be confirmed. For example the module supports comparative assessment of external features using historical data visually presented side by side for each clock position.  Examples of information included are FlexJoint physical properties, historic inspection results including inspection images, pressure and temperature data, FlexJoint utilization factors, anomaly reports, and 3D modelling data.

Anomaly Reporting & Management

Anomaly reports are used to communicate features posing potential integrity threats identified from operations, monitoring, or inspections. The anomaly reports provide information on the affected equipment's function, historical and current condition, and a technical assessment and recommendations with associated target dates for risk management.

Document of Compliance

Clarus maintains documentation records of all information relevant to the integrity management program, including a project document register, action tracker and internal and external email communications. Historical asset knowledge is documented through the life of the system for feedback into facility life extension, future projects or the future sale of the development. Significant value is found from our clients through our rapid response to requests for documentation and information. Our internal quality and management systems ensure that the basis for decisions can be quickly retrieved and verified.

Integrity Plans

Integrity Plans & Risk Assessments

Clarus optimizes the management of field data from various sources for equipment condition assessment, which are then input into the development of risk based integrity plans. We take a qualitative approach to assess integrity risks by sectioning the system into segments that are subjected to similar threats, failure modes, and failure events. Where age related threat mechanisms exist and adequate measured data is available; a quantitative risk assessment is adopted for trending and risk evaluation. The output from risk assessments are then reviewed with the clients for optimisation and practicality of executing inspections, monitoring, and engineering activities. The plans are updated periodically to include the impact of changes to the design, operational conditions, and integrity data evaluations over the life of the asset.

Our integrity management planning services include the following:

  • Safety case development and/or hazard identification and associated risk assessment
  • Identification and application of innovative assessment methods
  • Written scheme of inspection and monitoring activities with defined intervals
  • Risk assessments
  • Gap assessment between existing IM plans and industry best practices
  • Project phase IM plan


Clarus uses a risk based inspection planning approach to prioritize subsea equipment inspections and optimise resource utilisation. Inspection work scopes are developed using knowledge of equipment design, applicable failure mechanisms, operational history, relevant inspection technologies and industry best practices. Component specific inspection checklists and datasheets are developed with an aim to gather relevant equipment condition data. The engineering assessment of inspection results follows a progressive approach with the following key elements:

  • Identify observations
  • Assess potential risks
  • Perform engineering assessment
  • Recommend options to move forward 

The end goal from an effective offshore inspection and engineering assessment of the inspection data is to assist the operator in determining fitness for service of the equipment, confirm effectiveness of equipment barriers and increase the knowledge of the operational conditions.

Inspection support we offer includes:

  • Inspection planning Development of inspection work scopes
  • Migration of inspection work scopes within third party inspection software
  • Offshore inspection support
  • Facilitating pre and post inspection meetings
  • Inspection data storage and management
  • Inspection data review and engineering assessment
  • Development of inspection reports and anomaly reports
Corrosion Assessments

Corrosion Assessments

Clarus offers comprehensive corrosion assessment services that correlate and evaluate data from various sources to determine the fitness of the system. The internal condition assessment is done periodically during operation, but is particularly important for repurposing and life extension. The main sources of data assessed include the following:

Internal Corrosion Assessment

Short term and long term corrosion probe and coupon monitoring data combined with records of chemical injection availability allow our corrosion specialists to assess the internal health of the system. Internal corrosion data collected serve to demonstrate the effectiveness of the current corrosion management strategy, but are also crucial inputs for corrosion wall loss analysis performed as part of fitness for service and life extension assessments using industry available corrosion modeling software.

Pigging and In-Line Inspection

Routine maintenance or cleaning pigging helps maintain the production flow path from deposits and debris. Debris retrieved during cleaning pigging can be analysed for composition to further understand production fluid chemistry. In-Line-Inspection (ILI) results are assessed for features including metal loss (corrosion or wear), manufacturing defects, and deformation. Identified corrosion features during ILIs are evaluated for Fitness for Service assessment.

Fitness for Service Assessment

While Engineering Critical Assessment (ECA) is performed during the design phase to determine acceptable flaw size in the pipeline, Fitness for Service (FFS) assessment is performed during production to evaluate existing defects or flaws and determine the pipeline remaining life. Internal corrosion assessment and ILI results are important inputs for the FFS assessment

Subsea Condition Monitoring

Subsea Condition Monitoring

Condition monitoring provides leading indicators to potential failure thereby allowing proactive management of asset risks that consequently help reduce downtime associated with investigation, repair or replacement of equipment. Monitoring of structural response, internal integrity parameters, and subsea controls system performance are key activities to understanding the system integrity. These measured parameters are periodically evaluated and reported as Key Performance Indicators (KPIs). Condition monitoring KPIs offered by Clarus include:

Structural Monitoring KPIs

Measured riser pipe strain, curvature and acceleration can be used to evaluate the strength and fatigue response of the system during normal operation as well as extreme environmental events. The collected data is used to validate design assumptions and to verify that the system is operating within intended design limits. 

subsea KPI infographic

Environmental and Operational KPIs

Environmental parameters such as wind speed, wave height and current speed can be used as indirect indicators of riser system strength and fatigue responses to environmental loading. Operational parameters such as vessel movement from nominal position, riser tension and stroke, riser porch velocity, and operating pressure and temperature are also tracked against KPI limits. Should any KPI limits be exceeded, Clarus can conduct an engineering assessment to determine the impact of the exceedance and fitness for continued service.

Internal Integrity KPIs

Corrosion, flow assurance, and production chemistry parameters are gathered to closely monitor the internal integrity of the production system. Routine maintenance pigging can also demonstrate the condition of the production flow path. Clarus facilitates the gathering and evaluation of data from the various responsible teams and issue periodic integrity statements. 

Subsea Control System KPIs

Clarus has developed algorithms to process available operational data to monitor directional control valve health, hydraulic control fluid consumption, HPU pump performance, and subsea communications health. Additionally, some of the algorithms offer failure prediction utilising existing data trends. Together these algorithms allow the prediction of failures before they occur. 

Process KPIs

Clarus also assists in tracking process efficiencies. These include but are not limited to actions, budget, deliverable completion, inspection completion, and anomaly closure. Matrices are developed to track and report these KPIs regularly. Process efficiency can be evaluated over long term tracking to demonstrate strengths and identify gaps.

Life Extension & Fitness for Service

Life Extension & Fitness for Service 

Experience in subsea equipment design, interpretation and application of operational information including inspection and monitoring data and advanced in-house engineering tools has allowed Clarus engineers to provide life extension solutions to our clients. Life extension assessment can help evaluate the current condition and future life expectancy of an entire production loop or section of pipeline within the production system, including hull piping, risers, flowlines, and jumpers to make sure it is operating reliably and efficiently to avoid unexpected failure resulting in costly downtime. 

A life extension assessment depends on the availability and quality of data relating to the system in question. Where there is a lack of measured data, we can use analysis assumptions and predictions to decrease uncertainty and confidently predict the remaining service life and whether life extension is a viable option. A key step involved is determining pipeline wall thickness in its current condition to input into the remaining life prediction to reduce conservatism. Where in-line inspection data is available, Clarus provides engineering critical assessment (ECA) to assess identified flaws and determine acceptability. Other data used to determine wall loss include corrosion coupon and probe data. In the absence of such data internal corrosion analysis is performed to estimate wall loss through service life consumed. 

Clarus has developed a quantitative method to calculate the usable service life of an operating pipeline and/or riser. An in-house method is used to quickly identify weak points across miles of pipeline using a combination of in-line inspection data and stress profiles. The maximum service life of a subsea pipeline is calculated using Clarus in-house software that combines industry code requirements, fatigue analysis, strength analysis, operational data, material properties during manufacturing and in-line intelligent pigging data. The results can be used to recommend if life extension is a viable option for our clients.

Our Experience

Clarus has been providing subsea integrity management services for over 10 years for a number of major offshore operators. Formerly, as part of 2H Offshore, our team has pioneered many of the integrity management processes used as standard in the industry today.


annual component risk assessments


inspection campaigns


anomalies assessments

and 5000+ hours

safe offshore inspections

Case Studies

Our IM engineering specialists have pioneered integrity management processes over the years as 2H Offshore’s IM division, through working with a number of major Operators. The team’s project experience covers a range of equipment including risers, conductors, flowlines, moorings, hulls and subsea equipment.

Subsea Tieback Fitness for Service Assessment

More info

Flowline Span Assessment

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Cathodic Protection Surveys & Mitigation

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Well Jumper Internal Corrosion Assessment

More info

Inadequate Cathodic Protection on a TTR

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Free Span Assessment & Prevention

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Hull Piping Splash Zone Corrosion

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Technical Papers

Our team’s history of subsea integrity excellence and innovation has resulted in a number of presentations at noteworthy industry events around the world.

Risk-Based Internal Corrosion Assessment of Pipe-in-Pipe Flowline

OTC 2018
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Cathodic Protection of Subsea Systems

NACE 2018
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Risk Assessment Tool for Corrosion Management

NACE 2016
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A Logical Path to Life Extension

Global FPSO Forum 2015
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Global Benefits and Operational Challenges of Vessel Relocation

OMAE 2015
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IMR Best Practice - Practical Lessons from a Decade of Subsea IM

AOG 2015
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Riser & Subsea Asset Field Life Extension

SNAME 2015
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Interpretation of Subsea Inspection Data

Subsea IM Summit 2013
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Determining Fitness For Service of SCRS and Flowlines With Probabilistic Tools

OMAE 2013
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Tolerance of Riser Fatigue to Corrosion Pitting

OMAE 2013
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Subsea Integrity Practices in GoM - A Case Study

SPE Applied Technology Workshop 2011
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Riser System Integrity Management in the GoM

Deepwater Operations Technology and Regulations Conference 2011
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Provision for Long-Term Integrity Assurance

IMechE Subsea Engineering Seminar 2011
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Mid-Water Flowline Integrity Monitoring Strategy

OMAE 2010
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Effective Implementation of Subsea Integrity Management

DOT 2010
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Riser and Mooring Line Integrity Management based on Real-Time Integrity

OWA 2010
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Pioneering Subsea Integrity Management

Subsea Operations and Technology Conference 2010
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Deepwater Riser and Subsea Integrity Management Strategy

Deepwater Technology Asia 2009
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Riser Integrity Management for Deepwater Developments

OTC 2006
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Here you will find answers to specific questions addressing a wide range of integrity management situations.

How do I optimize inspections?
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How do I manage data?
How do I address corrosion under insulation (CUI)?
How do I establish KPIs?
How do I coordinate feedback between the operations and design teams?
Submit your enquiry below and we will get back to you as soon as possible.
Clarus Subsea Integrity, Inc.
15990 North Barkers Landing, Suite 200
Houston, TX 77079

Map: Google map
T: +1 832 664 7620