Our Capabilities
Fully integrated Asset Integrity Management solutions from concept through life extension.
We deliver fully integrated Structural Integrity Management (SIM) solutions that support assets from concept development through long-term operation and life extension. Our capabilities combine advanced engineering analysis, risk-based methodologies, and digital integration to ensure structural safety, regulatory compliance, and optimized lifecycle performance.
Structural Integrity Management Frameworks
We develop and implement tailored SIM plans aligned with industry best practices and international standards, including API RP2SIM and ISO 19901-9. Our approach integrates:
- Inspection planning and execution
- Inspection data review and degradation modelling
- Large-scale prioritized repair scoping
- Performance monitoring within a structured, auditable framework compatible with client governance systems
Our strategies maintain compliance while reducing unplanned interventions, optimizing inspection frequency, and extending service life.
Floating Asset Structural Engineering
We provide structural assessment and engineering support for FPSO hull structures, topsides, equipment foundations, hull/topside interfaces, marine structural systems and brownfield modifications.
Lifecycle-Integrated Design & Reassessment
We embed integrity principles into the design process to create assets that remain resilient, inspectable, and maintainable throughout their life. Our design philosophy includes:
- Fatigue-sensitive joint optimization
- Corrosion allowance and cathodic protection strategy
- Redundancy and abnormal load case evaluation
- Residual strength and damage scenario assessment
- Design for Inspectability (DfI) — ensuring safe, practical access to critical components
- Design for repairability — enabling efficient strengthening, replacement, or retrofitting
- Material selection focused on low OPEX and minimal operational disruption
By addressing inspection access, degradation pathways, and realistic intervention scenarios during FEED and detailed design, we reduce future maintenance burden, minimize downtime, and lower whole-life costs.
Advanced Structural Analysis
Using industry-leading platforms including SESAM, SACS, and ANSYS, we perform:
- Global and local structural modelling
- Spectral fatigue analysis
- Ultimate limit state and pushover assessment
- Member capacity and Reserve Strength Ratio (RSR) evaluations
- Fitness-for-purpose and life-extension studies
- Modification and brownfield integration assessments
These analyses support design verification, ageing infrastructure reassessment under updated loading or damage conditions, and informed life-extension decisions.
Risk-Based Inspection
We implement advanced Risk-Based Inspection (RBI) frameworks using platforms such as COABIS and NEXUS. Combining probabilistic risk modelling with machine-assisted pattern recognition, we refine assessments using historical data, degradation trends, operational parameters, and environmental exposure. Key features include:
- RBI optimized inspection plan
- AI-driven image analysis for above-water corrosion patterns (from drone imagery) and subsea anode condition (from ROV visuals)
- Automated anomaly detection against client acceptance criteria
- Data-driven calibration of corrosion growth rates
- Machine-learning estimation of corrosion trends across asset populations
- Refinement of fatigue damage models using operational history and inspection findings
- Bayesian updating of Probability of Failure (PoF) models to prevent over-inspection or under-inspection
- Early pattern recognition of reliability degradation across portfolios
This approach enables clients to prioritize high-risk activities, focus resources effectively, reduce unnecessary inspections, improve reliability and safety, and enhance audit transparency — with AI augmenting, rather than replacing, engineering judgement.
Due Diligence for Asset Acquisition
We support investors and operators acquiring marginal fields and ageing energy infrastructure by providing independent asset condition and integrity assessments. Our evaluations help buyers understand the true structural condition, maintenance backlog, and remaining life of offshore and onshore facilities before acquisition. By combining inspection data review, structural reassessment, and degradation modelling, we provide clear insight into:
- Asset risks and structural condition at point of acquisition
- Maintenance backlog and deferred integrity activities
- Remaining service life and life-extension potential
- Required remediation work and associated cost estimates
- Long-term integrity management requirements
- — Example scope: acquisition integrity review, structural condition assessment, inspection data review, corrosion backlog assessment, remaining life evaluation, CAPEX exposure estimates
- — Targets: marginal field buyers, private equity, asset divestments
Our independent assessments give acquirers the technical confidence to make informed investment decisions and negotiate effectively on asset value and remediation obligations.
Digital Inspection Data Capture & Integration
We support fully digital inspection workflows that eliminate paper-based processes and enable real-time data flow from field to engineering systems. Using tablet-based platforms, inspection teams capture:
- Corrosion, coating breakdown, deformation, cracking, and mechanical damage
- Structured digital forms, photographs, and location tagging
- Topside, subsea (ROV/diver), and marine infrastructure data
Data synchronizes instantly with integrity databases and enterprise systems such as SAP S/4HANA and IBM Maximo, supporting structural reassessment models, RBI frameworks, maintenance planning, and digital twin environments.
Digital Twin & Digital Asset Engineering
We support operators in developing and applying engineering-grade digital twins for asset integrity, brownfield engineering and life-extension programmes. Working with specialist digital engineering partners, we combine 3D laser scanning, point-cloud data, existing PDMS models, inspection data and engineering analysis to establish verified digital representations of operating assets.
- Digital twin strategy and use-case definition
- 3D laser scanning, point-cloud processing and as-built model development
- Development and updating of 3D asset models using existing PDMS data
- Integration of digital geometry with structural models, inspection records and engineering assessments
- Brownfield modification, constructability and clash-detection support
- Integration with asset information and integrity-management platforms
- Development of integrity dashboards and engineering decision-support workflows
- Independent technical assurance of digital asset and integrity projects
Our multidisciplinary delivery model combines HPG's asset integrity and engineering capability with specialist survey and digital engineering expertise.
Maintenance Strategy Optimization
We review and redesign inspection and maintenance programs for efficiency, cost-effectiveness, and performance across offshore platforms, transmission towers, marine jetties, industrial structures, and telecommunications assets. Services include:
- Backlog reprioritization based on life safety, environmental, production, material, and reputational risk
- Deferral of non-critical tasks without compromising safety or compliance
- Structured life-extension strategies for ageing assets, including residual capacity reassessment and intervention pathways
- Transparent work-order tracking via ERP integration
Our goal is smarter inspection, strategic maintenance, and maximized asset value.
Caisson Inspection & Integrity Management
We provide engineering support for the inspection, assessment, and integrity management of offshore caissons and riser conductors, which are critical components of platform infrastructure used for seawater lift, pump caissons, and utility systems. These structures operate in highly aggressive marine environments where corrosion, marine growth, and structural deterioration can compromise both operational reliability and safety. Our services help operators understand the condition of caisson systems and implement structured maintenance and life-extension strategies. Services include:
- Inspection planning and scope definition for caissons, including splash-zone and submerged structural components
- Engineering review of inspection data, including corrosion damage, wall thickness loss, and structural deformation
- Assessment of caisson structural capacity, including support framing and connection integrity
- Identification of degradation mechanisms, including internal corrosion, external corrosion, and marine growth effects
- Development of repair, strengthening, or replacement strategies for ageing caisson systems
Our goal is to provide clear engineering insight into caisson condition, enabling safe operation and informed maintenance decisions for critical offshore infrastructure.
Pipeline Remaining Life & Replacement Engineering
Through our network of specialist pipeline engineering partners, we support operators in managing the integrity of onshore and offshore pipelines and flowlines through engineering assessment, inspection planning, and life-extension strategies. Our services help identify degradation mechanisms, evaluate anomalies, and develop practical mitigation or replacement strategies to maintain safe and reliable operation of aging pipeline infrastructure.
- Corrosion management programs for pipelines and flowlines, including internal and external corrosion assessment
- Inline inspection (ILI) program support, including tool selection, run planning, and data interpretation
- Pipeline anomaly assessment, including corrosion defects, dents, gouges, and crack-like indications
- Fitness-for-service and remaining life assessments for degraded pipelines
- Routine pigging strategy development, including cleaning and intelligent pigging programs
- Composite repair design and evaluation for corrosion defects and localized damage
- Pipeline rerouting and replacement studies where deterioration or operational changes require system upgrades
- Pipeline replacement and rehabilitation engineering, including structural verification and constructability considerations
- Inspection and monitoring planning, including risk-based inspection strategies for pipelines and flowlines
- Failure investigation and root cause analysis for pipeline incidents or integrity threats
- Cathodic protection assessment and corrosion mitigation strategies
- Pipeline integrity management system (PIMS) development
- Pipeline risk assessment and consequence modeling
- Third-party damage risk evaluation
- — Mitigating risk attributed to ageing, corrosion failures, illegal tapping damage, limited inspection history
Operators often know a pipeline is aging — but struggle to answer: How long can we safely operate it? When must we replace it? What is the most cost-effective strategy? We provide the engineering rigour and clarity to answer these questions.
Brownfield Modifications & Asset Life Extension
We support operators managing aging offshore platforms, terminals, and FPSO infrastructure through engineering solutions focused on life extension and brownfield modification. Our services cover piping integrations, structural upgrades, and load reassessments—ensuring compatibility, constructability, and long-term asset integrity while minimizing operational disruption. Key services:
- Piping routing studies in congested topside environments
- Structural assessment of pipe racks, supports, and primary steelwork
- Verification of new loads and vibration effects
- Design of pipe supports, guide frames, reinforcements, and temporary works
- Tie-in engineering, hot work reviews, and constructability assessments
- Updating structural models and inspection programs to reflect modifications
We produce practical, constructible drawing packages including structural GAs, modification details, piping layouts, isometrics, and integration of legacy as-built documentation.
In Every Sector, Every Stage
In every sector, we focus on structural integrity, operational reliability, and lifecycle value — from concept to decommissioning.