The Version 
The List of Changes 
2.15.0.5 15.10.2018 
 The parameter check of weldin toroidal insertion for tilted nozzle is improved.
 The error of tank model creation with low type reinforcement is fixed.
 The error of flat head model creation with the central radial nozzle is fixed.
 The allowable load tables titles for calculations with lowcyclic loads is renamed by allowable load amplitudes.

2.15.0.4 25.10.2018 
 The error of stiffness matrix invalid factorization at large mesh levels is fixed (error ¹803 in versions 2.14 and below).
 The bugs of conical shell modeling with large offsets is fixed.
 The bugs in GUI for the calculated schemes of the conical bottom and the reducer is fixed.
 The misprints in the GUI when choosing the strength calculation under lowcycle loads is fixed.
 The bug of creation of geometrical model of tilted nozzle with short length is fixed.
 The bug of average radius calculation on flat heads is fixed.
 The bug in the GUI is fixed when the digits after the comma were lost (for a some Windows regional settings).
 The minimum allowable distance from the outer surface to the shell edge was reduced (condition was lighted).
Now, instead of d/2, we use criterion min{d/2;vDs}.
 The incorrect output of allowable stress values for austenitic steels is fixed (in the calculations the correct values is used).
 The bug of mesh alignment in the extrapolation stress procedure is fixed when the nozzle welded zone ? 2*s1.
 The inaccuracy of result nozzle thickness calculation with inner part is fixed (in strength calculation addition cs1 was only applied).

2.15.0.3 28.08.2018 
 The visualization of the window zoom mode in the postprocessor is corrected;
 The generation of the finite element framework in the postprocessor when changing display modes is corrected;
 The formatting of reports for calculations under GOST 34233.2 2017 and GOST 34233.3 2017 is corrected;
 The error of reports generation on nonEuropean versions of Windows 10 when choosing Russian language is fixed;
 The blocking of the solution stage during the nozzle length testing is fixed;
 The verification of material properties at a given operating temperature is supplemented.

2.15.0.2 20.08.2018 
 The error of running the solver when working with files located in a network folder is fixed;
 The error of dongle access customizing is fixed;
 The error of postprocessor running for some cases of regional floating point number representation is fixed;
 The error of calculation running for newly created projects is fixed;
 The system of requests to the user when saving and calculation running is modified;
 Bugs of handling related GUI elements is fixed;
 The presentation of calculation results is fixed;
 The error of creating edge elements on the nozzle short inner part is fixed;
 The inaccuracy in the geometric model construction of elliptical heads on the areas of sharp curvature changes is fixed;
 The inaccuracy in the geometric model construction of the conical transition and bottom with the left cylindrical insertion is fixed;
 The inaccuracy in the parametric model of the conical shell with a "small" height is fixed.

2.15.0.1 08.08.2018 
 The limiting temperature is introduced when corrosive medium is actived in accordance with GOST 34233.102017.
 The calculation of allowable stresses for nozzle with pad was modified.
 The critical error in the design model of conical reducer and head is fixed.
 Flaws related to the materials database is fixed.
 Flaws in the installation program associated with the installation of Microsoft Visual C++ 2015 Redistributable is fixed.
 Edge artifacts on short fittings is fixed.
 Flaws in creating a geometric model of an tee with equal run and branch parts is fixed.
 The critical error in the stress extrapolation procedure on short fittings was fixed which caused the solution abort.
 The text formatting in reports is corrected.
 The incorrect output of allowable stresses for JB 47321995EN is fixed.

2.15.0.0 27.07.2018 
 Version 2.15 is installed only on 64bit versions of Windows.
 The finiteelement solver was translated on a 64bit architecture and this is allowed to escape from memory restrictions (1.5Gb) for 32bit Windows versions.
 The calculation method of allowable loads was corrected and refined.
 The calculation method of stiffnesses and flexibily factors was corrected and refined.
 The calculation method of stress intensification factors (SIF) was corrected and refined.
 The procedure of stress extrapolation at the weld toe was added, which allows to more accurately estimate peak stresses, improve the convergence of stress values at different mesh quality levels.
 For conical shell was added the possibility of specifying the end offset (as for eccentrical reducers):
 Load of hydrostatic pressure load was add for cylindrical and conical shell:
 Nozzle type radiobuttons was replaced by nozzle type combobox:
 The new nozzle type "with weldin toroidal insertion" was added:
 The new nozzle type with beading was added:
 The new nozzle type with beading and with welded segment was added:
 The regeneration possibility of the result report was added.
 The result report was changed for allowable loads, stiffnesses and stress intensification factors sections.
 The postprocessor possibilities was extended for color setting of background, element edges and etc:

2.14.0.7 02.04.2018 
 Fixed error that occurs when using materials of EN 134453 when calculating to EN 134453;
 Fixed some typos in the GUI.

2.14.0.5 29.12.2017 
 Restrictions was removed on the use of alloys from nonferrous metals;
 The database of materials was extended.

2.14.0.4 27.11.2017 
 The calculating method of material characteristics was refined;
 The output of allowable stresses in the source data for some ASMEmaterials was fixed.

2.14.0.3 12.05.2017 
 Fixed the error for inserting a nozzle into elliptical bottoms for a private subtask.

2.14.0.2 10.05.2017 
 The algorithm for generating a finite element grid on elliptical bottoms is optimized;
 Fixed errors translating into Chinese language.

2.14 29.03.2017 
 Postprocessor module (3D interactive model) was developed. It helps to visualize the results of calculation.
 Materials database was filled by mechanical properties of materials from GB 150.22011 (China).

2.13 07.12.2016 
 Added strength calculation under lowcyclic loads as per i.7 GOST R 52857.62007 «Improved calculation to lowcycle strength».
 Corrected safety factor for austenitic chromenickel steels as per GOST R 52857.12007.
 Strength calculation of V apparatus group working in corrosive hydrogen sulphide environment (GOST R 52857.102007).
 Fixed flat head description in report.

2.12.0.1 05.07.2016 
 Weld seam mesh was refined and elements along nozzle were overridden.
 Materials database working faster.
 “Delta” was removed for nontransition nozzles with pads.
 Wall’s angle calculation for conical shell added to program interface.
 Tilted nozzle’s location was corrected.
 User template report’s path is saved on exit.

2.12.0.0 25.02.2016 
 Nozzle location limit for bottoms/heads are expanded;
 Calculation of conical transitions and heads clarified due to refined mesh;
 Chinese language is allowable for working;
 Added calculation of the stress intensification factors;
 Added calculation of the flexibility factors.

2.11.0.1 28.05.2015 
 Fixed encoding bug in the Html report.

2.11 26.05.2015 
 Stiffness calculation in junction for all model configurations;
 Strength estimation as per ASME VIII div.1;
 Strength analysis of conical transition and heads working in corrosive hydrogen sulphide environment (GOST R 52857.102007);
 Added criterion for ASME VIII div.1,2: “Protection against local failure” (σ1+σ2+σ3<=4[σ]);
 Materials database was filled by mechanical properties of materials from tables 1A, 1B (ASME II Part D (Metric)).

2.10 25.09.2014 
 Strength analysis of conical transition and heads;
 Strength estimation as per JB 47321995;
 Materials database was added by mechanical properties of materials from JB 47321995, GB 7132008 and TU 143Ð552001 Standards.

2.09 02.12.2013 
 Strength estimation as per ASME VIII Div. 2 2010 and EN 134453:2002 E;
 Analysis of barrel nozzles;
 Stiffness estimation in junction place, as well as on the edge of nozzle;
 Materials database was added by mechanical properties of main materials from EN Standards;
 Materials database was added by “Maximum allowable stresses” (table 5(A, B)) from ASME Sect. II, Part D for estimation by Sect.VIII, Div.2.

2.8.0.4 14.06.2013 
 Fixed bug of saving update settings;
 Materials database was added by mechanical properties from PNAE G700286, OST 260185894, STO 002202270062010, GOST R 545222011.

2.08 26.07.2012 
 New FEmodel for estimation of strength and stiffness of nozzles connections into the vertical steel tank’s walls, including nozzles with tombstone shape reinforcing plate;
 Analysis of trunnion connections;
 Implementation of a new material database, which includes both Russian and ASME material properties;
 Automatic software version update system is introduced.

2.07 09.08.2011 
 Added converter for making RTF reports, using one of default templates;
 Head's straight flange mesh became a fine structure.

2.06 14.10.2010 
 Straight flange and cylindrical shell was added to head model.

2.05 01.02.2010 
 Added standards for strength estimation: GOST R 52857.12007 and GOST R 52857.102007 (corrosive hydrogen sulphide environment);
 Reduced minimal limit distance from nozzle’s wall to shell’s edge;
 Number and longitudinal length of shell’s elements are optimized;
 Loads to tilted branch can be applying as in the main pipe coordinate system and in the branch;
 Added the ability to configure the number of stress contours (from 3 to 30).

2.04 21.07.2009 
 Program was expanded by english language interface with switching on fly;
 Added models of radial and tilted branch connections. Loads applying points are on the main pipe and on the branch;
 Tables are free from pictures, what is good usable for MS Office;
 Reduced minimal limit distance from nozzle’s wall to shell’s edge;
 Deformed model picture in auto scale added to the report.

2.03 20.01.2009 
 Added nozzle calculation, including allowable loads and stiffnesses, for both global and local coordinate system;
 Realized calculations of junctions of both horizontal and vertical shells.

2.02 13.11.2007 
 Improved user interface and fixed bug with wrong nozzle location in the conical shell.

2.01a 27.06.2007 
 Fixed some minor bugs in dongle working.

2.01 29.11.2006 
 The first commercial version of the program, which replaced program “Nozzle”.
