Pipe stress analysis is concerned with the prevention of overstressing pipes, skids, vessels, flanges, bolting, gaskets, valves, relief devices, fittings, hangers and supports. Pipe stress analysis is an analytical method to determine how a piping system behaves based on its material, pressure, temperature, fluid, and support. Pipe stress analysis is not an accurate depiction of the piping behavior, but it is a good approximation.
Typical Pipe Stress Analysis Problem Areas
Pipe hanger/support failure
Equipment support structure failure
Verification of unfired pressure vessel design
Pressure surge damage
We perform pipe stress analysis on new and existing piping systems to accomplish the following:
Verify that piping stresses are below code allowable values (ASME B31.1, ASME B31.3, CSA Z662, etc)
Verify that piping loads on rotating equipment are below industry standards (API-610, NEMA SM23, etc.)
Verify that piping loads on vessels, tanks, heaters, etc, are below code allowable values (ASME Section VIII, API, etc.)
Design spring supports
Design rigid pipe supports and restraints
Calculate forces and moments for failure analysis
Calculate thermal movements
If piping stresses and/or loads on connected equipment exceed their respective allowable values, we make recommendations to reduce the overloaded component/s to acceptable values.
Peer Review of Designs by Others
Existing Systems Being Modified
Existing Systems with Maintenance Problems
Analyzing Piping Failures
INDICATIONS OF PIPING PROBLEMS
Excessive Pipe Sag
Broken Supports or Restraints
Bottomed or Topped Out Spring Supports
Unexplained Rotating Equipment Vibrations
Damaged Foundations of Connected Equipment and Vessels
Flange Alignment Problems
Shaking or Vibrating Piping
Squirming or Leaking Expansion Joints
STRESS ANALYSIS DETAILS
Accuracy and a high level of detail are needed for the analysis to accurately predict piping stresses and piping loads onto connected equipment. Little P.Eng. for Engineering Services in this area. Our experience collecting data, field checking piping drawings against as-built systems, knowing what data is needed, detailed modeling techniques, and pipe modeling experience, allows us to quickly and accurately model piping systems.
Little P.Eng. for Engineering Services in solving piping problems. Our experience solving piping problems of all kinds, allows us to quickly recognize problems and develop solutions that work, are practical, and economical. Quite often piping problems are identified during our field visits collecting data. When this occurs, we sketch details needed for recommendations during our preliminary visits, thus, solutions are provided sooner, and the results of the modifications have been previously used and are known to be successful.
Little P.Eng. for Engineering Services offers a complete range of piping, skid, pressure vessel and tank storage engineering services. We specialize in mechanical detail design of piping, skids, pressure vessels, shell and tube heat exchangers, including the supply of detail drawings for fabrication.
Little P.Eng. for Engineering Services offers pipe stress capability for onshore and offshore installations complying with international codes (e.g. ASME B31.3, ASME B31.4, ASME B31.8, DNV2000), services include:
Static design (operating, wind, seismic analyses and fatigue evaluation)
Dynamic design (modal time history and harmonic analyses)
Blast resistance design (using state-of the-art tools to design piping for blast resistance)
Little P.Eng. for Engineering Services can also assist clients in carrying out fire and explosion studies and quantitative risk analysis, which are pre-requisites for a comprehensive blast design
Assessment of acoustically induced vibration (AIV) effects and fatigue life evaluation of piping, to internationally acceptable practices
Software to be chosen in consultation with clients (options include Caesar II).
Little P.Eng. for Engineering Services offers a complete pipe support design service. Little P.Eng. for Engineering Services can develop pipe support standards that address clients' needs, using the clients' basis of design, early in the project. Little P.Eng. for Engineering Services will assist clients in selecting the most economical pipe support and spring hanger systems and advise on component material usage to minimize weight. Little P.Eng. for Engineering Services can also provide factory supervision during fabrication and installation.
Pressure Vessel and Storage Tank Engineering
Basic pressure vessel design to ASME Section VIII and AS1210
Basic tank design to API 650
Localized nozzle loading assessment for pressure vessels and tanks
Design services as regards components of complicated configuration
Assessment of fatigue life and life extension possibilities for existing equipment
Design services for modification and retrofitting of existing vessels for new duties or services
Installation, commissioning and maintenance support
Internal inspection and reporting
Design documentation for submission to statutory approving/verifying bodies
Because Meena Development LTD. offers an array of multidisciplinary services (Pipe Stress Analysis and Structural Engineering), we can provide solutions across a multitude of industries. The listing below indicates a few of Meena Development’s most commonly served industries.
Our professional piping stress engineers have a bachelor's and Masters degree in mechanical / structural engineering and province license (P.Eng.) in Alberta, Saskatchewan, British Columbia and Ontario. We review, validate, certify and stamp piping and structural packages. Also check Industries We Serve.