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SagePlus

A collection of analysis tools developed by E2G allowing users to evaluate the design & in-service conditions of fixed pressure equipment.

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BASIC & FITNESS-FOR-SERVICE

ADVANCED FRACTURE MECHANICS

SAGEPLUSTM PACKAGES

ADVANCED ANALYSIS

The SagePlusTM Basic and Fitness-For-Service (FFS) Pack is used to calculate the required thickness, maximum allowable working temperature (MAWP), maximum future corrosion allowance (FCA), minimum design metal temperature (MDMT), maximum allowable working temperature (MAWT), and stress for pressure-containing components.

Access to the extensive materials database allows users to select from over 20,000 materials, incorporating the specific material properties in the desired analysis. In addition, a Level 1 and Level 2 FFS analysis can be performed per API 579-1/ASME FFS-1.

For calculation of Corrosion Rates (CRs), this pack includes the ability to manage and store thickness data, and calculate CRs for CMLs and defined circuits using the two-point, linear regression, long rate, short rate, or the WISE rate. WISE rate is a probabilistic method which blends field data with expert opinion.

The Advanced Fracture Mechanics analysis modules enable users to determine the FFS of components containing crack-like flaws using the assessment procedures in API 579-1/ASME FFS-1, Section 9. The Failure Assessment Diagram (FAD) is used in API 579 for the evaluation of crack-like flaws in components. For cracks operating at upper shelf toughness, a ductile tearing analysis may be performed.

The Advanced Analysis pack includes stress analysis tools allowing the user to: compute stresses at nozzle attachments to spherical and cylindrical shells due to external forces and moments; estimate the burst pressure for cylindrical and spherical shells; determine stresses in piping elbows subject to internal pressure and an arbitrary combination of in-plane, out-of-plane and torsional bending moments; determine the susceptibility of heat exchanger tubes to flow-induced and acoustical vibration; analyze mating flanges subject to an initial gasket seating bolt and subsequent operating condition loads, including pressure, temperature differentials, and external piping loads; determine wind loads for use on a piping systems or other non-wind sensitive structure based on the procedures contained in ASCE 7 or AS 1170.2 (Australia), and determine the stresses, stress inducers, and flexibility ties due to applied thrust loads and moments on lugs and other integral attachments on piping and pressure vessels.

In addition, the FAST stress analysis programs for shells are included that allow the user to perform: stress analysis of branched shells of revolution under axisymmetric loading conditions; linear elastic stress analysis of branched shells of revolution under general loading conditions; and a stress analysis of cylindrical and spherical vessel-to-nozzle intersections including a stress analysis of local vessel-corroded or hot spots using the flexible geometric and load descriptions.

The FAST methods were developed to facilitate accurate and fast solutions to complex shell problems while requiring a minimum of input data time, preparation, and user judgment.

HOTTAP ANALYSIS The Hottap Analysis pack includes two welding simulations: Battelle and E2G. The Battelle analysis is a transient thermal solver based on the finite difference method that predicts peak wall temperatures, maximum cooling rates, and the shortest cooling time during and after welding for repair or for hot tapping. The propensity for burn-through of the pipe wall and heat-affected zone cracking due to excessive cooling rates is also predicted.

The E2G Welding Simulation is a transient thermal solver based on the finite element method, with all of the same capabilities as the original Battelle welding simulation analysis. In addition, a fluid modeler has been added to address any fluid in refining and petrochemical service along with additional hottap geometries, including weld-o-lets.

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MATERIALS PROPERTIES

SAGEPLUSTM PACKAGES

The Material Properties pack leverages the materials database included with PlantManager™ to perform analysis on materials, typically as a function of temperature. Analysis results can be generated for allowable stress, yield and tensile stress, physical properties, external pressure charts, Ramberg Osgood parameters, modified Ramberg Osgood parameters, stress-strain curves, high-temperature (creep) properties, and cyclic strain curves. Results are presented in both table and graph formats. The Material Properties pack can also be used to generate an ABAQUS material property block for use in an FEA study. In addition, this analysis pack includes a tool to fit the results from a Charpy impact test to a hyperbolic tangent function, which can be used to represent a Charpy transition curve.

The Material Properties analysis can be used to determine material properties for a specified material based on the ASME Design Code. The available design codes are as follows.

FIXED EQUIPMENT ANALYSIS

The Fixed Equipment Analysis (FEA) pack includes a range of tools for design and analysis of fixed pressure equipment. Analysis tools in this pack can be used to: compute stresses, the design fatigue life, and the MAWP in a metallic circular bellows expansion joint; evaluate the spherically dished bolted head design configurations; analyze the stresses in clamp-type flange connections, and design non-circular pressure vessels to the ASME CODE including header boxes, bonnets and rectangular ducts; determine the required pipe wall thickness over a range of nominal pipe diameters for a specified design temperature and internal or external pressure; evaluate all the components that compose the pressure boundary of a shell and tube heat exchanger; and evaluate the components that make up a horizontal pressure vessel or drum; and evaluate all the components that compose the pressure boundary of a vertical pressure vessel supported by a skirt.

HEAT TRANSFER & FLUID TRANSPORT

The Heat Transfer & Fluid Transport analysis pack can be used to evaluate the condition of a cylindrical pipe span to determine the maximum allowable moment, maximum allowable deflection, location of maximum deflection, and the required and/or retirement thickness of the pipe. It can also predict the remaining life and inspection interval based on a corrosion rate.

Analysis capabilities also include the ability to calculate one-dimensional steady-state temperature profiles and heat transfer rates in composite cylinders, spheres, and flat plates. Steam tracing can be evaluated to determine the type, size and number of steam tracers required to maintain a desired minimum process temperature inside a piping system or a small diameter vessel. The user can evaluate various insulation types and thicknesses and determine the effect on steam tracing requirements. The benefits of using heat transfer cement can be readily evaluated. In addition, the effects of wind velocity and ambient temperature can also be evaluated.

• ASME Section I Boilers

• ASME Section VIII, Division 1 and 2 Pressure Vessels

• ASME B31.1, B31.3, B31.4, and B31.8 Piping

• API 650, API 653, and API 620 Tanks

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SAGEPLUSTM PACKAGE SUMMARIES

BASIC & FITNESS-FOR-SERVICE

• PIPE – B31 Pipe section evaluation• SHELL – Shell Section design or in-service evaluation• TANK – Tank design or in-service evaluation• Tank settlement• Flange• Integral flat heads• Conical shell transitions • Tubesheet• Pipe span• API RP 530• Bolted heads• Noncircular pressure vessels• Fitness-for-service• Thickness monitoring and corrosion rate determination

CMLWise

ADVANCED FRACTURE MECHANICS

• Level 3 brittle fracture screening • API 579-1/ASME FFS-1 static crack-like flaws • Crack-like flaw evaluation for arbitrary loading• Crack growth analysis• Crack ductile tearing analysis for crack-like flaws operating

at upper shelf toughness

ADVANCED ANALYSIS

• WRC 537 nozzle stress analysis • Burst pressure evaluation • Pipe elbow flexibility and stress• Tube vibration evaluation• Flange mating rotational analysis• Wind pressure calculator• WRC pipe lug evaluation • Axisymmetric shell evaluation using FAST 1• Nozzle stress analysis using FAST 2 (the basis for WRC 297)• Axisymmetric shell evaluation and asymmetric loading

using FAST 4

HOTTAP ANALYSIS

• Batelle Welding Simulation• E2G Welding Simulation

FIXED EQUIPMENT ANALYSIS

• Bellows and flanged and fluid type expansion joints• Clamped connections• Standard piping class definitions • Rectangular flanges• Analysis of Shell and Tube Heat Exchangers per ASME

Section VIII or TEMA• ASME Section VIII horizontal vessels (drums)• Vertical Vessels (towers)

MATERIALS PROPERTIES

• Allowable stress• Yield and Tensile stress• Temperature-dependent properties: Young’s modulus,

thermal expansion coefficient, thermal conductivity, thermal diffusivity, specific heat, yield strength, and ultimate strength

• ASME Section 2, Part D external pressure charts• True stress-strain curve data using Ramberg-Osgood or

Prager’s material model• Cyclic stress-strain curves• Omega and Bailey Norton creep data• ASME Section VIII, Division 2 toughness information

HEAT TRANSFER & FLUID TRANSPORT

• Fluid property modeler• Stored energy of pressurized system • Steady state heat transfer• Steam tracing evaluation

INDIVIDUAL PACK SUMMARIES ARE AS FOLLOWS: