Fiberglass Engineering - Analysis Support
We offer a range of analysis services focused on fiberglass piping, including stress, surge, and vibration analysis for both new and existing systems. Our experienced team uses advanced techniques to identify potential risks and ensure your systems meet ISO 14692 industry standards.
Our fiberglass experts provide clear insights and practical solutions, including onsite assistance and supervision during installation, maintenance, or root cause analysis after a failure. We are committed to helping you improve the performance and durability of your fiberglass piping infrastructure.

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Fiberglass Reinforced Plastic piping is widely used in industrial settings. However, ensuring its safety and performance under various conditions requires stress analysis services. Identifying potential issues early will help you prevent costly failures and ensure long-lasting, reliable operation for your FRP piping systems.
Why Choose DRG for Your FRP Stress Analysis?
- Expert Evaluation: Our engineers analyze pipe stress, flange loads, and nozzle loads to confirm they fall within safe, allowable limits. We focus on system flexibility, ensuring all components meet critical design code requirements.
- Advanced Techniques: We employ advanced methods such as Finite Element Analysis (FEA) for more complex systems and in-depth evaluations.
- Up-to-date Standards: We integrate the latest Stress Intensification Factors (SIFs) and flexibility guidelines for tees and bends, ensuring complete static integrity.
Buried piping introduces unique challenges such as soil settlement, backfill resistance, and road crossing loads, all of which can lead to uneven stress distribution and deformation. We specialize in addressing these complexities, ensuring the structural integrity of buried Fiberglass Reinforced Plastic systems.
Why Choose DRG for Your Buried Piping Stress Analysis?
- Comprehensive Evaluation: We assess critical factors such as ground movement, soil pressure, and expansion restraint to prevent overstress conditions.
- Dynamic Interaction Analysis: Our team evaluates the interaction between the pipe and surrounding soil, identifying stress points at bends and joints to minimize risk.
- Tailored Solutions: We consider key factors like soil type, compaction, and pipe stiffness, offering solutions such as thrust blocks or flexible joints to absorb stresses.
In addition to analytical solutions, DRG provides on-site supervision and expert advice during installation and failure investigations, ensuring proper trench sizing, bedding, and backfill compaction for the long-term reliability of your buried FRP systems.
Surge events and water hammer pose significant risks to fluid systems, particularly those made with fiberglass piping, which is more susceptible to high-pressure peaks than steel. Sudden flow changes from valve operations or pump trips can cause excessive surge pressures, leading to an increase in pipe stress, which could cause potential system failure.
Why Choose DRG for Surge Analysis?
- Transient Modeling: We model surge and transient events in detail, identifying their impact on the system’s structural integrity.
- Targeted Risk Mitigation: Based on our analysis, we provide practical solutions to reduce surge pressures, unbalanced loads, and related risks such as cavitation and reverse flow.
- Protection for Fiberglass Systems: Our surge analysis ensures that your FRP systems are safeguarded from pressure peaks and structural damage, keeping your operations safe and efficient.
Whether it is a new or existing system, DRG’s multidisciplinary approach ensures you can take the right mitigation measures to protect your fiberglass piping against the pressure shocks arising from surge events
Vibrations in piping systems, often caused by interactions between the transported medium and mechanical components, can lead to energy waste, noise, and mechanical failures due to fatigue. Fiberglass piping, with its lower stiffness and susceptibility to resonance, is particularly vulnerable to these vibrations.
Why Choose DRG for Vibration Analysis?
- Root Cause Identification: Using vibration measurements, modal analyses, and mechanical response assessments, we diagnose the underlying causes of harmful vibrations.
- Tailored Solutions: We combine structural and transient flow analyses to address vibrations caused by varying flows, pumps, or process conditions, preventing fatigue and pulsation failures.
- Focused Expertise: Our experience with fiberglass pipelines ensures that we effectively mitigate vibration risks, preserving the integrity of your system.
Projects

CFD Analysis of the Two-Phase Flow in the Finger of a Slug Catcher
The two-phase flow in a finger-type slug catcher is analyzed using CFD techniques to ensure stratified flow for liquid separation, employing Ansys CFX and OpenFOAM simulation tools.

CFD Analysis of the Flow Around a Butterfly Valve
The study analyzed flow around a butterfly valve using OpenFOAM to verify actuator sizing, focusing on torque-valve opening relationships, stationary flow behavior, and minimal piping influence on forces and moments.

CFD and Thermal Calculations of the Pre-heating of a Heat Exchanger
A CFD study using OpenFOAM predicted hot air velocity distribution in a heat exchanger to analyze thermal gradients between tubes, preventing buckling. Detailed thermal results were obtained via custom FEA software.

LNG Bunkering System: Surge Analysis
A surge analysis for a 600-meter LNG bunkering line was conducted to ensure safe operations, focusing on worst-case scenarios, surge mitigation strategies, and optimizing emergency valve and pump coordination.

Preventive Analysis Of A Fiberglass Ballast System On A Vessel
A surge and static stress analysis for an FRP ballast water system identified excessive surge pressures from rapid valve closures and layout rigidity causing stress issues. Flexibility improvements were recommended to prevent recurrence.

Analysis of a 1.6 km Long Jetty Pipeline
A jetty pipeline’s surge and dynamic stress analyses identified excessive stresses during transient upsets. Valve closure adjustments were proposed to mitigate unbalanced forces, ensuring compliance with design code limits.

Gas Compressor Station Assessment

Pipe Stress Analysis for an Oil and Gas Extraction Facility
DRG conducted static and dynamic pipe stress analyses for an oil and gas facility, resolving overstress issues via support modifications, rerouting, and flange upgrades, ensuring structural integrity and operational efficiency.

Pulsation Analysis for a Flow Station
DRG resolved vibration issues at a Nigerian Flow Station by conducting pulsation and mechanical response analyses, recommending support modifications to mitigate dynamic stresses, ensuring system reliability, and enhancing performance.

Vibration Analysis For Piping Connected To Hydrogen Compressors

Noise and Vibration Analysis of a Metering Skid
DRG’s noise and vibration analysis of a gas metering skid identified potential fatigue risks from acoustic resonance and vortex shedding. Recommendations on piping layout ensured compliance with industry standards and enhanced reliability.

Vibration Analysis of Hydrogen Cyanide (HCN) Line in Slug Flow Regime
DRG analyzed a water feed line in slug flow, identifying fatigue risks near the endurance limit. Support modifications reduced dynamic stresses, extended fatigue life, and improved system integrity for reliable HCN operation.

Fatigue Analysis For A Reactor Feed Pressurization Drum

Fatigue Assessment of Vibrating Process Line
DRG identified density fluctuations as the cause of process line vibrations, leading to pipe support damage. Recommendations included support repairs, axial stops, and fatigue mitigation to ensure system reliability and stability.

Fatigue Analysis of an 8-Pass U-Tube Heat Exchanger
Detailed FEA of an 8-pass U-tube heat exchanger identified critical fatigue stresses due to temperature differentials. Engineers proposed full penetration welds for partition plates, enhancing operational integrity, longevity, and refinery safety.

Fatigue Analysis For A Reactor Feed Pressurization Drum

Fatigue Assessment of Vibrating Process Line
DRG identified density fluctuations as the cause of process line vibrations, leading to pipe support damage. Recommendations included support repairs, axial stops, and fatigue mitigation to ensure system reliability and stability.

Fatigue Analysis of an 8-Pass U-Tube Heat Exchanger
Detailed FEA of an 8-pass U-tube heat exchanger identified critical fatigue stresses due to temperature differentials. Engineers proposed full penetration welds for partition plates, enhancing operational integrity, longevity, and refinery safety.