Mathematical calculations for predicting the technical condition of the pipeline
We provide a professional assessment of the serviceability of the pipeline. We prepare data on the timing of emergency defects and precise recommendations for their elimination.
Expert assessment of the pipeline for maximum safety
- Advantages
FFS (Fitness for Service) and FFP (Fitness for Purpose) reports are an important tool for managing risk and optimizing maintenance costs for pipeline systems. Required for:
- 1. Pipeline system condition assessments:Both reports help to identify defects, damage and non-conformities that may affect the safe and efficient operation of the pipeline.
- 2. Informed Decision Making:The results of these reports help make decisions about future operation, repair or modernization of the pipeline system.
- 3. Confirmations of Safety:FFS reports confirm that the pipeline can continue to operate safely, and FFP reports ensure that the system meets all functional requirements and is ready for changed operating conditions.
- 4. Life Extensions:Pipeline condition assessments help determine which parts need repair or reinforcement, which helps extend service life and avoid costly replacements.
- 5. Regulatory Compliance:These reports ensure compliance with safety standards, environmental regulations and legal requirements, minimizing risks to the operator and the environment.
- Calculation of FFS (Fitness for Service Assessment)
The purpose of the FFS calculation is to determine whether the pipeline can continue to operate despite existing defects or damage. For this purpose, a risk analysis methodology and residual system strength calculations are used.
Stages of FFS calculation:
1
Defect identification:
In the first stage, the pipeline is diagnosed and defects such as corrosion, cracks, dents, constrictions and other damages are identified. Visual inspection, ultrasonic, magnetic and other types of defectoscopy methods are used.
2
Classification of defects:
The severity of each defect is determined based on its size, type and location. This can be done using classifications such as ASME (American Society of Mechanical Engineers) or other standards.
3
Material Strength Assessment:
The strength of the pipeline materials is assessed with respect to age, corrosion and other factors affecting the integrity of the pipeline. Calculations based on mathematical models that can account for pressure, temperature, and other operating parameters are used.
4
Emergency Modeling:
Modeling of possible emergency situations, such as ruptures or leaks, is conducted to assess risks and safety implications.
5
Residual life assessment:
Based on the data obtained, the residual life of the pipeline is calculated, taking into account the defects identified and potential risks.
6
Recommendations:
Based on the results of the calculations, a conclusion is issued on the possibility of continued operation of the pipeline, taking into account the defects, as well as recommendations on the necessary repair, reinforcement or replacement of damaged sections.
- Calculation of FFP (Fitness for Purpose Assessment)
The purpose of the FFP calculation is to verify that the pipeline meets its performance requirements, including the ability to perform its stated functions under changed or new operating conditions.
Stages of FFS calculation:
1
Design data analysis
The first step is to analyze the design characteristics of the pipeline, including calculations for pressure, temperature, chemical aggressiveness of the medium and other conditions under which the system must operate. It is assessed whether all requirements and regulations have been taken into account in the design.
2
Determination of operational requirements:
Changes in the operating conditions of the pipeline, such as changes in pressure, temperature or composition of the substances being transported, are taken into account. The ability of the pipeline to withstand these changes is assessed.
3
Strength and stability assessment:
The strength and stability of the pipeline is analyzed with respect to operational loads. This includes material durability calculations, analysis of possible defects and their impact on the functionality of the pipeline.
4
Inspection of structural elements
Assessment of compliance of all structural elements of the pipeline system (bends, valves, transitions) with the stated operational requirements. Their strength, resistance to corrosion and wear are analyzed.
5
Operational risk assessment:
Possible risks, such as leakage or damage, due to failure of the pipeline to meet its functional purpose are modeled.
6
Recommendations:
The results of the FFP calculation include recommendations for improving or modernizing the pipeline to ensure that it meets operational requirements, as well as suggestions for improving design solutions, if necessary.
- Methods and tools used to calculate FFS and FFP:
1. Mathematical modeling:
In both cases, modeling is used to calculate strength, assess risks and predict pipeline behavior under operating conditions.
2. Standards and regulations
Calculations are performed in accordance with international standards such as ASME, API, ISO and others that regulate methods for assessing the condition of pipeline systems.
3. Defectoscopy:
Non-destructive testing methods are used to collect data, including ultrasonic diagnostics, magnetic powder flaw detection, radiography, and other technologies.
4. Software:
Specialized programs are used to model and calculate the strength of materials, as well as for durability and risk assessment.
