MT-VESS

MECHANICAL CALCULATION OF PRESSURE VESSELS
The software program MT-VESS allows the mechanical design and stability check of pressure vessels. The rating of existing pressure vessels is also allowed. The program runs under WINDOWS 9x/NT/2000/ME/XP operating systems.

The program has been designed to be more generalized as possible, allowing to the project engineer to quick and simply define the vessel configuration and, at the same time, to choose between different Construction Codes.
Vertical columns (one or multiple diameters) and horizontal/vertical pressure vessel can be calculated.

The Version 3.2.0 is the last one released. For release contents click for Ver. 3.2.0 List.

MT-VESS - Documentation


ALLOWED CODES
ASME VIII division 1(U.S.A.)
ISPESL-VSR(Italy) - Harmonized with the PED Directive
AD-MERKBLATT(Germany) - Harmonized with the PED Directive
EN13445European Code
PD5500 (App.G)(U.K.) (Brackets stability check ad Local Loads)


ALLOWED COMPONENTS

  • Formed Heads (spherical, elliptical, torispherical)
  • Flat Welded Heads
  • Flat Flanged Heads
  • Shell Barrels
  • Conical Sections
  • Girth Flanges
  • Nozzles (Radial, Inclined, Hillside)


ELEMENT TYPES PROVIDED
MainStructural resistent elements
IntermediateElements to divide the vessel in different pressure chambers
AppendixElements wich axis is ortogonal to the main vessel axis
JacketElements for exchanging heat with external fluids


SUPPORTS

  • Saddles
  • Brackets
  • Legs
  • Skirts


NOZZLES

  • Nominal Diameters from 10 to 1500 mm (3/8" to 60")
  • Automatic Selection of the construction material from pipe or shell
  • Automatic verification of the nozzle hole and reinforcement calculation
  • Nozzle welding analysis


INTERNALS

  • Demister
  • Distillation Trays
  • Packings
  • Inerts
  • Catalysts
  • Liquid Distributors
  • Coils
  • Coatings


DATA BANKS
The software package is based on large, user modifiable, data banks:
Materialsmechanical properties of over 350 ASME/UNI/EUROMARK materials
Nozzles and Flanges(ASA, UNI)
Gaskets(ASME/VSR, AD-MERKBLATT)
ASME Charts for External Pressure
Standard SupportsSaddles, Brackets, Legs, Skirt
Stiffening RingsAISC, EUROPEAN
BOLTSANSI B18.22, UNI/ISO, DIN 2510


ANALYSIS CAPABILITIES
  •  
 Check of stresses caused by internal pressure
For each element to user can specify two different pressure and temperature conditions to be verified
  •  
 Stability check for loads caused by external pressure.
To contrast the external pressure the user can choice between stiffening rings insertion, thickness increase or a combination of both.
  •  
 Stability check against combination of different loads: Equipment weight, wind loads, earthquake, user specified forces and/or moments. For Wind and Hearthquake the user can choice between the following Codes:
Wind Codes Hearthquake Codes
ANSI ANSI 1982
ASCE 7-95 ASCE 7-95
CNR 1982 CNR 1986
CNR 1996
DM 2005/OPCM3274DM 2005
NEIGE ET VENT PARASISMIQUE PS92
BSI CP 3 UBC 1988
UBC 1994 UBC 1994
UBC 1997 UBC 1997
  •  
 Vibration Analysis.
  •  
 Components weight calculation in different conditions: operating, hydraulic test, erection.
  •  
 Stability Check of supports and foundations.
  •  
 Geometrical Dimensioning of the equipment.


OUTPUTS
The results of the vessel calculation consist of a Tabular report, Vessel Drawings, Bill of Materials and the Audit Reports Book.
ASCII ReportAll relevant data of the vessel are printed out, including the results of numerical calculation and geometrical dimensioning.
Example - PDF 87 Kb
Bill of MaterialsAll components belonging to the vessel under design are summarized in a table with dimensions, weights and number of items. The table can be viewed on screen, printed or exported as Excel file for further processing (i.e. Cost Estimates).
Example - PDF 4 Kb
Drawings The software program automatically generates the equipment drawings in two or more A3 sheets, depending from the complexity of the equipment.
Example - PDF 151 Kb
In the simplest case the two sheets produced contain the following details:

1.st Sheet
  • Project Data
  • Loads on foundations
  • Materials
  • General Notes
  • Nozzles Specifications
  • Flanges and Flat Flanged Heads Specifications
2.nd Sheet
  • Quoted drawing of the equipment
  • Schema for nozzles orientation
Drawings can be generated in english or italian language (other languages using latin alphabet can be easily provided) and it is possible to choice between the following system of units:
  • Metric
  • English
  • Internazional Standard (S.I.)
  • User Defined
The drawings are produced in DXF format for easy importing them in AUTOCAD, or in many other CAD programs which accept this very popular standard, for further enhancements.
Audit Reports BookFor all the vessel components (or just for someones) datasheets including formulas and substitutions are shown on the screen and can be printed or saved on a file.
The user can complement the data sheets automatically printed by the program with:
  • Cover Pages.
    The included Page Editor, also if simple, allows for an exhaustive text handling and for the insertion of file images in BMP, WMF, JPG formats.
  • Index of Contents.
    The program, if so requested, automatically produces an index with pages numbering referred to every component.

Datasheets can be produced in English or Italian languages, selecting S.I. or English system of measurement units.

Example - PDF 59 Kb