As the business environment grows more challenging, assets must generate a higher return on investment. DNV develops customised solutions to optimise maintenance and inspection activities, which ensure the safety and integrity of your assets.

Purpose

To develop and manage inspection and maintenance plans for new and existing assets (including offshore and onshore plants, structures, pipelines).

Benefits

Your asset’s performance will perform better:

• Increased revenue due to higher uptime, a pro-active maintenance and inspection strategy and execution plans
• Increased operating results as operation, maintenance and inspection costs shrink
• Longer asset life and lower costs for fixed asset replacement
• Less working capital needed due to better planning and cash-flow management
• Assessment of the initiatives’ effect on safety and asset integrity.
  

Our approach

DNV develops a customised solution, designed specifically to optimise production through effective maintenance and inspection. A risk-based approach ensures that resources are focused where they are most effective, without compromising the asset’s safety and environmental performance. Working together with our customers, we transfer the necessary expertise to your organisation, to achieve the best results sooner, smoothly and safely.

Our expertise

Maintenance, spare parts and logistic optimisation

• Optimises your maintenance programme using our Risk-Based Maintenance (RBM) concept and DNV’s own tool: ORBIT RCM
• Helps you understand the impact of various maintenance strategies to production and SHE
• Improves overall asset availability
• Introduces spare part optimisation and specification of spare part strategies and requirements, based on RBM and production forecast modelling.

Inspection optimisation

• Develops inspection strategies and programmes to achieve high technical integrity for process equipment, pipelines and load-bearing structures
• Establishes reporting, monitoring and failure analysis practices to improve quality of inspections
• Uses risk-based methods (RBI) to allocate, prioritise and manage inspection resources, using the DNV software tool ORBIT RBI.

Condition management

• Establishes risk-based condition management systems to control and manage risks associated with specific damage mechanisms. This maintains and improves technical integrity of plant equipment
• Starts automated monitoring of the selected damage mechanism through available process instrumentation, condition monitoring sensors and manual sampling
• Introduces ‘right time’ assessment of condition data utilising risk-based inspection (RBI) models and extensive expertise on materials degradation mechanisms
• Provides prognostic assessments by visualising the ‘integrity windows’ and the ‘technical asset integrity status’, using KPIs and traffic light symbolism at equipment, system and installation level
• Gives advice on cost-efficient solutions for improved operation and follow-up of compensating measures
• Provides stakeholders with technical integrity status reports on assets.

Asset safety system reliability
Managing safety system performance is one of the most important maintenance objectives. Planning tests includes finding the balance between the benefit of improved safety and the cost of testing, including production loss. DNV’s approach to implementation of the IEC 61508 and IEC 61511 standards for safety systems covers both the design and operational phases.

During the project design phase, our efforts include:

• Hazard identification and areas where risk should be reduced
• Risk assessment – a dedicated risk assessment to set reliability requirements for the safety functions, or SIL (Safety Integrity Level)
• LOPA analysis (layer of protection), which takes into account all risk reduction measures available
• Reliability analysis – to analyse the actual reliability
• Development of the Safety Requirements Specification (SRS) for vendor contracts
• Documentation requirements
• Development of Safety Analysis Reports (SAR) for equipment suppliers
• Integration and design of the safety system, definition of requirements to the architectural constraints, hardware reliability and avoidance/control of systematic failures.

During the operational phase, our efforts include:

• Development and implementation of routines for testing and maintenance as an integrated part of the CMMS
• Specification of KPI and reporting system for follow-up compliance with SIL requirements
• Analysis of the failure history and updating of the testing regime
• Study of how unintended testing during operations can be used as part of the reliability estimation.