MT-COMP Revision History MT-COMP Revision … Revision History MT-COMP - Revision History MT-COMP Revision 3.2.0 (January 2008) 1. The ASME VIII Div.1 code has been updated to the

MT-COMP Revision History

MT-COMP - Revision History

MT-COMP Revision 3.3.0 (January 2009)

1. General revision for the updating of the calculation codes.

The revision has included:

ASME VIII div.1 ADDENDA 2008

EN 13445 with addenda until June 2008 (issue 31)

AD2000-MERKBLATT with addenda until February 2008

2. The following materials have been added to the materials database:

SA 240 317L-S31703 20591/2007

SA 317L(G5)-S31703 20601/2007

SA 182 F317L-S31703 20593/2007

SA 182 F317L(G5)-S31703 20603/2007

SA 249 TP317L-S31703 (wld) 20595/2007

SA 249 TP317L(G5)-S31703 (wld) 20605/2007

SA 312 TP317L-S31703 (smls) 20592/2007

SA 312 TP317L(G5)-S31703 (smls) 20602/2007

EN 10216-3 - P355 NH 70022/2002

SA 556 GR B2-K02707 20205/2007

EN 10028-2 - 13CrMo4-5 70231/2004

EN 10216-2 - 13CrMo4-5 70232/2005

EN 10222-2 - 13CrMo4-5 70233/2001

SA 556 GR C2-K03006 20465/2007

SA 403 304(G5)-S30400 20018/2007

SA 420 GR WPL8-K81340 20028/2007

SA 420 GR WPL3 20038/2007

SA 234 GR WPC-K03501 20068/2007

SA 234 GR WPB-K03006 20178/2007

SA 234 GR WP1-K12821 20218/2007

SA 234 GR WP11 CL1 20268/2007

SA 234 GR WP22 CL1-K21590 20278/2007

SA 403 316(G5)-S31600 20308/2007

SA 403 316L(G5)-S31603 20318/2007

SA 403 321(G5)-S32100 20328/2007

SA 234 GR WP5-K41545 20358/2007

SB 575-N06022 29771/2007

SB 619-N06022 29772/2007

SB 575(G5)-N06022 29781/2007

SB 619(G5)-N06022 29782/2007

SA 240 GR WPL6 20132/2007

SA 790-S31803 (smls) 20142/2007

SA 192-K01201 (smls) 20475/2007

EN 10028-2 - P235GH 70361/2004

EN 10028-2 - P265GH 70061/2004

EN 10028-3 - P275NH 70101/2004

EN 10028-3 - P275NL1 70111/2004

EN 10028-3 - P275NL2 70121/2004

EN 10028-3 - P355NH 70141/2004

EN 10028-3 - P355NL1 70151/2004

EN 10028-3 - P355NL2 70161/2004

EN 10028-7 - X5CrNi18-10 70011/2004



EN 10028-7 - X2CrNi19-11 70031/2004

EN 10028-7 - X5CrNiMo17122 70361/2004

EN 10028-7 - X2CrNiMo17122 70021/2004

EN 10088-2 - X5CrNi18-10 70051/2005

EN 10088-2 - X2CrNi19-11 70071/2005

EN 10088-2 - X5CrNiMo17122 70171/2005

EN 10088-2 - X2CrNiMo17122 70181/2005

EN 10222-5 - X5CrNi18-10 70043/2001

EN 10222-5 - X5CrNiMo17122 70053/2001

EN 10222-5 - X2CrNiMo17122 70063/2001

EN 10222-2 - P245GH 70023/2001

EN 10222-2 - P280GH 70073/2001

EN 10222-2 - P305GH 70083/2001

EN 10216-2 - P235GH 70002/2005

EN 10217-2 - P235GH 70012/2005

EN 12451 - Cu-DHP R250 79115/2002

EN 10028-7 - X2CrNiMoN2253 70191/2004

EN 10028-7 - X2CrNi18-9 70211/2004

EN 10088-2 - X1NiCrMoCu25205 70201/2005

SA 387 12 CL2-K11757 20581/2007

3. The function of the wall data import on the nozzles modulus of the program has

been fixed. The joint efficiency was not correctly imported for different system

units.

4. A control has been added to the calculation of the Young modulus. When the design

temperature is greater than the maximum tabulated a warning message is issued and

the program stops.

5. The calculation of the allowable stress of austenitic stainless steels per EN 13445

has been fixed. For steels with elongation less than 30% the calculation of the

allowable stress was wrong.

6. The tolerance of materials per EN 13445 has been added to the program.

7. The calculation of girth flanges with ring joint gasket has been added to the

program.

8. The option for the calculation of the MAWP on the tubesheet modulus has been

added to the program. This allows to avoid the MAWP calculation, that can be very

time comsuming, when trying alternative calculations before the final tubesheet

configuration.

9. The saddle standard and the saddle calculation has been revised. The saddle top

flange is now always considered and the transition plate is taken into consideration

only when required by the Zick analysis. The saddle stress analysis according to the

MOSS is based now on the saddle top flange.

10. The archive of the engineering data has been revised with the addition of the caps.

At the moment, only caps per ANSI B16.9 are loaded in the archive.

11. The bolts design temperature has been added as optional datum on girth flanges,

floating head and flanged flat covers modules.

12. The compensation limits from input have been added for the nozzles compensation

analysis according to ASME App.1-10.

13. The initialization of the system units has been revised to avoid wrong units

definition for new calculations.

14. The nozzles compensation analysis per ASME App.1-10 has been revised to be

alternative to the analysis according to UG-37 and App.1-7. Before both the analysis

were performed at the same time.



15. The calculation of the MAWP for girth flanges has been revised. The MAWP is

now calculated by setting the pressure on the other flange equal to the imposed

design / test presssure and iteratively changing the pressure on the flange under

calculation.

16. The weight of the girth flanges has been fixed.

17. The check for UG-45 in the nozzle calculation has been corrected. The reduction of

the 12.5% on the final thickness is done for nozzles from pipe only and is not

applied to nozzles from plate or from forging.

18. The calculation of the MAWP for the tubesheets has been added to the program.

Both the shell side and tube side MAWP are calculated keeping constant the other

pressure and iteratively changing the pressure on the side under calculation until the

MAWP is reached.

19. The calculation of the compensation for nozzles according to ASME has been fixed.

The value of the selfreinforce in circumferential direction was not initialized

correctly.

20. The gaskets of type Seal Welded have been added to the gasket database. The

calculation method for flanges according to ASME / VSR / EN has been updated

accordingly.

21. The gasket width in the girth flanges module has been added as optional datum from

input.

22. The lining thickness has been fixed in the calculation of the nozzle compensation

according to ASME App.1-10.

23. New stiffening rings have been added in the table of the flat rings in the rings

database.

24. For the following bolts materials the values of the limit diameters have been

modified to comply with the bolt nominal diameters used in the database so to avoid

retrieving problems:

A 193 B16 - A194 4-K14072 20214/1999

A 193 B7 - A194 2H-G41400 20094/1999

A 193 B7M - A194 2HM-G41400 20104/2003

A 193 B8CCL2 - A194 8C-S34700 20344/1999

A 193 B8CL2 - A194 8-S30400 20324/1999

A 193 B8MCL2 - A194 8M-S31600 20364/1999

A 193 B8TCL2 - A194 8T-S32100 20304/1999

A 320 L7 - A194 4-G41400 20054/2002

25. The calculation of exchangers tubes per AD-2000 has been modified. The safety

factors for the allowable stress calculation have been revised according to the

Rev.Oct.2006. In addition the allowable stress management has been revised to

allow the possibility of using allowable stresses from input.

26. The way to use additonal axial forces in the calculation of the girth flanges

according to AD-2000 has been modified. The user shall now explicitly specify the

forces if he wants to take them into account.

27. The nozzles thickness calculation according to ASME UG-45 has been fixed. The

final thickness did not consider the reduction of 12.5% required by the code.

28. The expanded tubes length related to tubesheets calculated according to AD-2000

has been revised. The limit lw=40 applies only for the tubes pulling out (ref. B5-

6.7.1.2).

29. A new function to import the relevant data from the mating flange has been added to

the module of the flanged flat covers.



30. The possibility to specify opening without nozzle has been added to the flanged flat

covers module.

31. The stress indices option has been added to the local loads calculation according to

WRC 107/WRC 297.

32. The stress analysis calculation for the support saddles has been added to the saddles

module. The calculation is carried out according to D.MOSS "Pressure Vessel

Design Manual" 3rd

Edition.

33. The support saddles calculation according to TEMA 9th

Edition has been added to

the saddles module.

34. The software key protection program for the programs evaluation has been changed

to comply with Windows Vista requirements.

35. A missing convergence in the calculation of external MAWP of cylindrical shell

with stiffening rings has been fixed.

36. The nozzles module has been revised to fix the missed coupling in the nozzles

database when the inside diameter is specified in alternative to the nominal

diameter. The nominal diameter is now always used for the coupling in the database

even when the inside diameter is specified.




1. The ASME VIII Div.1 code has been updated to the Edition 2007.

2. The ASME II – Part D (materials) has been revised to the Edition 2007.

In particular

The following ASME charts for vacuum have been revised or added:

NFT-3

NFT-4

NFT-5

The following materials SA 965 have been added in substitution of the

corresponding SA 336:

SA 965 F304-S30400 20433/2007

SA 965 F304(G5)-S30400 20443/2007

SA 965 F304L-S30403 20383/2007

SA 965 F304L(G5)-S30403 20423/2007

SA 965 F304N-S30451 20453/2007

SA 965 F316-S31600 20363/2007

SA 965 F316(G5)-S31600 20373/2007

SA 965 F316L-S31603 20223/2007

SA 965 F316(G5)-S31603 20233/2007

SA 965 F321-S32100 20083/2007

SA 965 F321(G5)-S32100 20463/2007

The following materials have been uptodated:

SB 171-C70600-O25 29211/2007

SB 265 GR 1-R50250 29921/2007

3. The following materials have been added to database:

SA 541 GR 22V-K31835 20473/2007

SA 542 GR D CL4a-K31835 20571/2007

SB 162-N02201 29761/2007

EN 10028-7 – X2CrNiMo17122 70021/2000

EN 10222-4 – P355NH 70033/2001

EN 10216-3 – P355NL1 70032/2002

EN 10269 – 25CrMo4 70044/2001

4. The calculation of external heating/cooling channels has been added to the program.

5. The rings for opening compensation has been added to the nozzle module.

6. The option Large Opening ASME per App.1-10 has been added to the program.

7. The calculation of the expansion joint per ASME App.26 has been revised per

Ed.2007.

8. A new code to memorize the last units system has been added to the program. The

new calculation now starts with the last used units system.

9. The possibility to review the results of previous calculations without the need to

rerun the calculation has been added to the program.

10. The calculation datasheet related to flanged flat heads per EN 13445 has been fixed.

In check, the number of bolts was not printed.

11. To make easier the understanding of the diagnostic messages, the sequence number

of the nozzle has been replaced with the nozzle item in all the diagnostic messages.

12. The check per maximum not holed diameter in fixed tubesheet according to

VSR.1.N.3.4 has been added to the tubesheet module.

13. The tubular legs have been added to the legs module.



14. The option to verify the loads generated by the legs over the shell by WRC 107 has

been added to the legs module.

15. The calculation of the tubesheet module according to the code EN 13445 has been

added to the program.

16. The calculation of the expansion joint module according to the code EN 13445 has

been added to the program.

17. The calculation of the tubes of the bundle module according to the code EN 13445

has been added to the program.


EN 10028-7-X5CrNiMo17122 70041/2000

EN 10028-7-X5CrNi18-10 70011/2000

19. The calculation of Young modules of the shell and channel for tubesheets according

to ASME-UHX has been fixed. The calculation is now done at the design

temperature of the shell and channel, respectively.

20. The values of the Young module of the material SA 516 Gr.70 have been changed

with the values related to "Carbon ! 30%"

21. The length of the tubes between the inner surfaces of the tubesheets in the

tubesheets calculation according to ASME-UHX has been fixed to take into account

the tubesheet corrosion shell side.

22. The floating head module has been fixed. For calculation in check the cover lining

was not managed correctly.

23. The warning message U0102 has been fixed. The temperatures referred in the

message are in °C and not in °F.

24. The option "Gasket overloading" has been added to the calculation of the floating

head flange.

25. The calculation of the cones to external pressure according to ISPESL-VSR has

been revised. In check calculation the values of the stiffening rings specified in

input were not taken into consideration for the check of the stiffening rings and for

the check of the junction cone-cylinder.

26. The rating of the nozzles instruments has been fixed. The rating was not modified in

function of the unification specified.

27. The formulas S3 / S4 in the calculation of the expansion joint according to ASME

App.26 have been fixed. The value of the wave height (w) was wrong.

28. The printout of the warning messages on the tabular report has been extended over

20 message.

29. The printout of the nozzle nominal diameter in the nozzles module has been fixed.

The reprinted values were referred to the last nozzle specified.

30. The calculation of the flat flanged heads module according to the code EN 13445


31. The calculation of the floating head module according to the code EN 13445 has

been added to the program.


SB 709-N08028 29661/2006

SB 709(G5)-N08028 29681/2006

33. A warning message has been added to alert the user when, in the calculation of the

nozzles, the calculated thicknesses of the wall have been missed.

34. The effective thickness of the nozzle in the analysis of compensation for the codes

VSR and EN 13445 has been updated. When the thickness of the nozzle is in excess

of the one read from VSR Fig.1.K.2.1 or from EN 13445 Fig. 9.4-14 then the



analysis is performed at the maximum allowed thickness and a warning message is

sent to the user.

35. The analysis of the gasket overloading in the calculation of the girth flanges

according to VSR / ASME / EN 13445 codes has been updated. An optional code

has been added in input to allow the user to select if the analysis must be done or

not. Moreover the analysis has been restricted to flat contacting surfaces (raised

face).

(Reference is done to VSR.1.U.3.3 and Taylor Forge Bulletin 502 for what concerns

ASME and EN 13445 codes)

36. The flat stiffening ring #80x10 has been added to the stiffening rings database.

37. The calculation of the reinforcing pad diameter has been fixed for the codes VSR /

EN 13445 / AD-MERKBLATT.

38. The nozzles calculation module has been corrected. In case of more than one nozzle,

sometime, only the last nozzle was written in the calculation datasheet.

39. The MT-COMP_Print_Manager has been added to the program.

This new function allows to collect more than one component calculated by the

program MT-COMP in order to get a complete Audit Report Book.

The Print_Manager is launched from the auxiliary programs in the MT-COMP

group of programs.

40. The module of the floating head has been fixed. When the gasket was overloaded

and the width of the gasket greater than the standard value, the inside diameter of

the flange was wrong.

41. The values of WL1 and WL2 in the nozzles welding analysis have been multiplied

by the exact value 0.5*(2^0.5). The previous value was rounded to 0.7.

42. The nozzle allowable stress in the datasheet page of the nozzle compensation has

been corrected.

43. The inside diameter of the expansion joint in the tubesheet calculation has been

fixed. The diameter was considered always corroded also in non corroded

conditions.

44. The opening compensation for VSR code has been updated in agreement to the para

VSR.1.K.6.

For welding angle lower than 45° the allowable stress of the nozzle is multiplied by

the nozzle joint efficiency.

45. The double value of joint efficiency (wall / nozzle) has been added to the calculation

of the nozzles subroutine.

46. The area A1 in the calculation of opening compensation has been fixed.

The value in some cases was wrong when the required diameter of the reinforcing

pad was bigger then the allowed limit.

47. The tubesheet calculation has been fixed. The tubesheet outside diameter forced in

input was overwritten during the calculation.

48. The calculation of the nozzles compensation according to ASME has been fixed.

For nozzles with circumpherential inclination in some cases the calculation was in

loop.

49. The archive for flanges LWN 2” ASA #300 has been fixed. The diameter and

thickness have been updated from the “Catalogo FERRARI”

50. The calculation of the floating flange in check has been fixed. In case of cladding

gasket face the thicknes for the check was wrong.

51. The Metric Tables for pipes and flanges have been added to the archive.

The values have been taken from:

B36.10M pipes C.S.



B36.19M pipes S.S.

B16.5M flanges from 1” to 24”

For flanges diameters greater than 24” the values from B16.47 have been kept.

52. A check has been added to the calculation of nozzles local loads on spherical heads

according to PD5500 when the value of the absissa is out of the curve limits.

53. The following materials have been added to the archive:

SA 240-S32750 20461/2006

SA 182 F53-S32750 20413/2006

SA 537 CL1-K12437 20471/2006

SA 213 TP304L(G5)-S30403 20105/2006

SA 213 TP304(G5)-S30400 20115/2006

SA 213 TP316L(G5)-S31603 20125/2006

SA 213 TP316(G5)-S31600 20135/2006

SA 213 TP321H(G5)-S32109 20145/2006

SA 213 TP321(G5)-S32100 20155/2006

SA 213 TP347H(G5)-S34709 20165/2006

SA 304L(G5)-S30403 20481/2006

SA 240 304(G5)-S30400 20491/2006

SA 240310S(G5)-S31008 20501/2006

SA 240 316L(G5)-S31603 20511/2006

SA 240 316(G5)-S31600 20521/2006

SA 240 316Ti(G5)-S31635 20531/2006

SA 240 321(G5)-S32100 20541/2006

SA 240 347(G5)-S34700 20551/2006

SA 240(G5)-S31254 20561/2006

SA 182 F304L(G5)-S30403 20143/2006

SA 182 F304(G5)-S30400 20153/2006

SA 182 F310(G5)-S31000 20293/2006

SA 182 F316L(G5)-S31603 20163/2006

SA 182 F316(G5)-S31600 20173/2006

SA 182 F321H(G5)-S32109 20183/2006

SA 182 F321(G5)-S32100 20193/2006

SA 182 F347H(G5)-S34709 20203/2006

SA 249 TP316L(G5)-S31603 20185/2006

SA 249 TP304L(G5)-S30403 20195/2006

SA 312 TP304L(G5)-S30403 20042/2006

SA 312 TP304(G5)-S30400 20062/2006

SA 312 TP316L(G5)-S31603 20082/2006

SA 312 TP316(G5)-S31600 20102/2006

SA 312 TP321H(G5)-S32109 20112/2006

SA 312 TP347H(G5)-S34709 20122/2006

SA 336 F316L-S31603 20223/2006

SA 336 F316L(G5)-S31603 20233/2006

SA 336 F316-S31600 20363/2006

SA 336 F316(G5)-S31600 20373/2006

SA 336 F304L-S30403 20383/2006

SA 336 F304L(G5)-S30403 20423/2006

SA 336 F304-S30400 20433/2006



SA 336 F304(G5)-S30400 20443/2006

SA 336 F321(G5)-S32100 20463/2006

SA 213 TP310MoLN-S31050 20435/2006

SA 213 TP310MoLN(G5)-S31050 20445/2006

SA 336 F304N-S30451 20453/2006

Note. The materials with (G5) have the allowable stresses increased according to

the note (G5) of Table 1A of ASME II-Part D.

54. For selfreinforcing nozzles the value of L1 in the compensation area as been

corrected according to the sketch (e-1) and (e-2) in FIG.UG-40.

55. The MAWP calculation for girth flanges according to VSR code has been fixed. The

calculation did not converge for values of g1/go > 5.

56. The allowable stresses calculation with allowable forced from input has been fixed.

The calculation was in error for materials with allowables depending on the

thickness when the calculated thickness was greater than the first limit thickness.

57. The type of thickness of the exchanger tubes has been added to the program (AW-

Average Wall / MW-Minimum Wall). For MW thickness, the weight of the tube

bundle is increased by 10% for ferrous materials and by 5% for non ferrous

materials.

58. The calculation of the hydraulic test pressure for girth flanges and floating flange

has been modified in order to take into account all the elements of the flange

(flange, shell, bolts).

59. The value of Lm for selfreinforcing nozzle in the compensation according to ASME

has been fixed. The value forced from input (Lo) was not congruent with the

calculated value.

60. The calculation of the formed heads in check according to ASME has been fixed.

The program did not keep the specified thickness when less than the TEMA

minimum.

61. A control has been added to the calculation of the girth flanges in check to verify

that the distance between the bolts circle diameter and the hub greater outside

diameter be enough to allocate the nuts.



MT-COMP Revision 3.1.0 (February 2007)

1. The ASME VIII Div.1 code has been updated to the Addenda 2006.

2. The ASME II – Part D (materials) has been revised to the Addenda 2006.

In particular

The following ASME charts for vacuum have been revised or added:

HA-1

HA-2

NFN-24

NFT-1

NFT-2

NFT-4

All the Ferrous material included in database have been revised and the

dependence of the materials from the thickness, if any, has been inserted in the

database.

3. The AD-MERKBLATT code has been updated to the latest revised sections.

In particular the following sections have been revised or added to the program:

Section B1 Appendix 1. New added to the program

Section B5. Revised all tubesheets calculation

Section B7. Revised bolts safety factor and new gaskets added

4. The following materials have been added to database:

SA 240-S31254 20441/2006

SA 268 26-3-3 Sml-S44660 20455/2006

SA 662 GR B-K02203 20451/2006

SB 688-N08367 29731/2006

EN 10222-2 – P245GH 70023/1999

EN 10269 – 42CrMo4 70034/1999

5. The field related to number of pages in the calculation datasheets has been enlarged

to allow numbers greater than 100.

6. The program revision has been added on all the calculation datasheets.

7. The check in the seating conditions of the floating head with backing ring + spacer

has been added for calculation according to VSR / ASME.

8. The height of the elliptical head 2:1 on the ASME datasheet has been fixed. The

height was wrong for heads with internal lining.

9. The external design temperature has been added in the calculation of formed heads.

10. The minimum required thickness to the external pressure has been added to the

datasheets of the exchangers tubes. The value is required for the U bent check

according to TEMA.

11. A control on the presence of the nozzle data in the archive has been added to avoid

the program crash.

12. A control has been added in order to increase the nozzle height when the total length

of the nozzle flange is greater than the standard nozzle height.

13. The table of U tubes in the exchanger tubes module has been increased to 100 lines.

Moreover the possibility of importing the values of U tubes from tubesheet layout


14. The LWN flanges from 26” to 42” for the ratings 150/300/400/600/900 have been

added to the nozzles database.

15. The option B1 for B in the Appendix 2-3 has been added for the ASME flanges

calculation.



16. The calculation of the flanges Loose / Lap Joint with hub according to VSR / ASME

has been fixed. The calculation was in error when the analysis of rigidity was the

controlling condition.

17. The printout of the datasheets pages has been fixed. The starting page forced by the

user was not assumed correctly by the program.

18. The height of the internal / external rings for spiral wound gaskets has been added to

the program.

19. The calculation of the shell side hydraulic test pressure on the floating cover

according to ASME as been fixed.

The value of the pressure has been multiplied by 1.3 in agrrement with the

criteria set forth by ASME for the hydraulic test pressure calculation.

20. The calculation of the allowable stress of the bolts of the floating flange in test has

been modified to accept the values forced in input.

The allowable stress was calculated always as 90% of the yield strength.

21. The conversion factor of the allowable stresses in the printout of the calculation

datasheet has been aligned with the value used in the unit system file.

22. The following material has been added to the archive.

EN 10269 – C35E

23. The mechanical properties of the following materials have been extended until 250

mm.

EN 10028-3 – P275NH

EN 10028-3 – P275NL1

EN 10028-3 – P275NL2

EN 10028-3 – P355N

EN 10028-3 – P355NH

EN 10028-3 – P355NL1

EN 10028-3 – P355NL2

24. The thicknesses calculated to the external pressures of the shells adjacent to the

cone have been added for the junction analysis of the cones to the external pressure.

25. The allowable stress in the calculation of the membrane stress at X=ya and X=la for

the expansion joint according to TEMA has been modified to assume the values of

the shell welded to the joint for X=ya or the minimum between the shell and the

joint for X=la.

26. The calculation of the coefficient C5 related to tubesheet with expansion joint

according to AD-MERKBLATT has been fixed.

27. The calculation of the equivalent pressure due to external loads and moments has

been added to the girth flanges calculation. The equivalent pressure is taken into

consideration for the flanges according to VSR/ASME/EN codes.

28. A check on the input data of the outer cylinder of the TEMA expansion joint has

been added to avoid crash of the program for input data missing.

29. A warning message has been added to alert the user when the calculation is locked

by other user.

30. A double conversion of system units, when importing wall data in nozzles

calculation, has been fixed.

31. The default in the changing of the localization data has been modified from

permanent to temporary.

32. The calculation of the nozzle compensation for ASME code has been changed. The

program calculates now the compensation on all the area (before the calculation was

on half the area). The datasheets has been changed accordingly.



33. The formula of the allowables of the SH stress for the shell in the datasheets for

flanges ASME Loose WN has been fixed to 1.5*fv.

34. The calculation of the flanges loose with hub for ASME and VSR has been fixed.

The calculation was in loop in the rigidity analysis.

35. The calculation of the selfreinforcing nozzles according to ASME has been

completely revised to allow both of the configuration (e-1) and (e-2) of Fig.UG-40

36. The calculation of the floating flange has been revised with the calculation of the

distance of the cover from the edge of the flange in corroded conditions.

37. The calculation of the large openings per ASME 1-7(b) has been added to the

nozzles analysis.

38. The calculation of the nozzle thickness per ASME UG-45 has been added to the

nozzle datasheet.

39. A check has been added to the program alerting the user when the thickness of the

nozzle is lower than the one required by the ASME UG-45.

40. A code has been added to the calculation of the tubesheets to select if the vacuum

condition is coexistent with the design conditions. The vacuum conditon will be

added to the design pressure of the other side during the start up and shut down

conditions only if the code has been set Yes.

41. The tubesheet calculation has been fixed. The calculation conditions forced from

input was not processed correctly for not fixed tubesheets.

42. The calculation of the allowable stresses for Nickel and Titanium materials

according to ISPESL-VSR has been added to the program.

43. The calculation of the allowable stresses for Nickel and Titanium materials

according to EN 13445 has been added to the program. The same criteria of the non

austenitic steels are applied with a warning message to the user.

44. A warning has been added in the nozzles calculation when the specified Nominal

Diameter does not match with the values loaded in the database. The nozzle is

calculated as nozzle from plate.

45. The calculation of the allowable stress of Stainless Steels with elongation greater

than 35% per ISPESL-VSR has been fixed according to the “Raccomandazioni

CTI”.

46. The calculation of the flanges according to VSR has been fixed. The test condition

was not taken into consideration in the calculation of the moment for the seating

condition.

47. The rigidity analysis for flanges Lap Joint for the codes ASME and VSR has been

fixed. The calculation was not performed before.

48. The optimization of the cover position in the floating flange has been added to the

program.




1. Revised for ASME VIII Div.1 Addenda 2005.

2. The European code EN 13445 has been added to the program.

The following components are operating at the moment:

Formed heads and flat welded heads

Cylindrical shell

Conical sections

Nozzles

Girth flanges

3. General revision of the material file to comply with the requirements for the

calculation of the allowables stresses according to the European code EN 13445.

4. The following materials have been added to the archive:

SA 266 Gr3-K05001

SA 765 GR II-K03047

SA 234 GR WPB-K03006

SA 789-s32750 (Smls)

SA 790-s32750 (Smls)

EN10028-7-X6CrNiMoTi-17-12-2

EN10222-5-X6CrNiMoTi-17-12-2

SB 625-N08904

SB 677-N08904

A 240-S32760

A 789-S32760

EN 10222-5 X2CrNiMoN2574

SA 240 317Ti-S31635

SB 75-C12200-H80

SB 111-C12200-H80

SB 466-C70600-O60

SF-Cu F25 DIN 1785

EN 20898 Cl.5.6

EN 20898 Cl.8.8

5. The tensile strength has been added to the materials quantities that the user can

change during the calculation.

6. The calculation of LWN nozzles to external pressure has been fixed. The pipe

height needed for the external pressure has been added to the calculation.

7. The calculation of the girth flanges in design mode has been fixed. Sometime, when

the hydraulic test was the controlling condition, the bolts number calculated by the

program was wrong.

8. The possibility to specify the minimum diameter of the reinforcing pad has been

added to the calculation of the nozzles.

9. The calculation of girth flanges thickness according to VSR and ASME has been

fixed for flanges Loose with hub or Lap Joint with hub.

10. The logic for the calculation of the tubesheets according to ASME UHX has been

revised. The Elastic-Plastic analysis is now always calculated, when necessary, and

is no more optional.



11. The stiffening ring archive has been modified. Tables specific for each ring shape

have been added. The program has been revised to interface correctly the new

archive.

12. The following missing ASME charts for vacuum have been added to to the archive:

HA-6 / HA-7 / HA-8

NFC-7 / NFC-8

NFN-22 / NFN-23 / NFN-24 / NFN-25 / NFN-26

13. The calculation of the cone to external pressure for ASME has been revised to

manage stiffening rings between the cone tangent lines.

14. The calculation of the parameter K [ASME 1-4(c)] for elliptical heads has been

revised to have K=1 for elliptical heads 2:1 (K is calculated always in non corroded

conditions).

15. The calculation of the skirt thickness of elliptical heads for ASME has been

corrected assuming joint efficiency = 1.

16. The distance from the border of the floating cover to the edge of the floating flange

has been added to the audit report datasheets of the floating head.

17. The hub length calculation of the girth flanges has been fixed assuming a minimum

value of 25 mm.

18. The calculation of the tubesheets per UHX in check has been fixed. The thickness of

the tubesheet was modified when the flanged extension was the governing

condition.

19. The printout of the datasheets has been fixed. The font was not set correctly in some

type of personal computers showing strings of unreadable characters.

20. The DXF library for the generation of the exchangers drawing has been updated

with the insertion of colors and layers.

21. The calculation method for tubesheet with flanged extension in U tube exchangers

has been modified according to TEMA RCB-7.13421 Method 1.

22. The calculation of the tubesheets per TEMA related to U tubes and channel integral

with the tubesheet has been added to the program (TEMA type D)

23. For TEMA tubesheets the value of equivalent diameter DL has been added as

optional value. The value overwrite the one calculated by the program as DL =

1.1(OTL - do).

24. The datasheet for tubesheets UHX (U Tube configuration (d)) has been corrected.

Some fields related to the moments were missing.

25. The calculation of tubesheets UHX has been corrected. The thickness of the shell

welded to the tubesheet was taken without corrosion for U tube and floating head

exchangers.

26. The calculation of tubesheets UHX has been corrected. The thickness of the

tubesheet was incremented by 1 mm for corrosion thickness with decimals.

27. A control has been added in the nozzles section to check that the nozzle mark be

specified for the nozzles to calculate.

28. The calculation of the adjacent nozzles according to VSR has been fixed. The

calculation crashed in the adjacent nozzles analysis when the compensation of one

of the nozzles was not required because the nozzle diameter was lower than the

minimum required by the code.

29. The expansion joint calculation according to TEMA has been revised. The spring

rate calculation for 2 or more waves has been fixed. Before the program always

assumed the value related to 1 wave.

30. The array for values in double precision has been added to the datasheet buffer to

manage values greater than the ones in single precision.



31. Some variables in the calculation of the expansion joint according to TEMA have

been declared in double precision to overcome the limitations in the calculation due

to the use of variables in single precision.

32. The calculation of the TEMA expansion joint in check has been fixed. The values of

Pd, P't, P's used in the calculation were always the ones in the uncorroded condition

also for the corroded condition.

33. The calculation of the half-apex angle in function of the cone height has been

revised. The former method was wrong for some values of the cone height and

diameters.

34. A control has been added for tubesheets with cladding to check the given cladding

thickness with the minimum specified by TEMA RB-7.8/C-7.8

35. The USB keys have been added to protect the program.

36. The seating bolts load used in the calculation of the flanged extension of the

tubesheets has been corrected. The value passed to the tubesheet was overwritten by

the value in the hydraulic test.

37. The value of the OTL for kettle exchangers calculated by default the program has

been corrected. The previous value was referred to the shell diameter instead of the

channel diameter.

38. The shell wall temperature for the TEMA expansion joint has been fixed on the

datasheet. The temperature was always printed in °F also for SI system.

39. The values of ya, yb in the calculation of TEMA expansion joint have been

modified according to the TEMA 8th

Edition.

40. The calculation of J for flanged and flued expansion joint according to TEMA has

been cancelled. (TEMA RCB-7.161 Note(1) and TEMA Inquiry 101)

41. The calculation of flanged and flued expansion joint for TEMA has been revised to

comply with ASME VIII div.1 Ed.2004 Appendix 5.

42. The thickness of the outer cylinder for TEMA expansion joint has been added in

input.

43. The Young modulus and the expansion coefficients have been revised according to

the ASME II Part D Ed.2004 for all the ASME materials in the database.

44. The minimum creep temperature and the material elongation have been added to the

material database.

45. The calculation of the allowable stress for austenitic stainless steels wiht elongation

of 35% for VSR has been modified according to the "Raccomandazioni CTI".

46. The license agreement has been added in the program installation.




1. The following new materials have been added to the materials database:

SA 36

SB 423-N08825

Ti2 3.7035

SA 213 T11

SB 424-N08825

SA 182 F321

SA 213 TP321

SA 336 F321

SA 336 F22 Cl.3

SA 387 GR22 Cl.2

SA 193 B7M / SA 194 2HM

SA 213 T22

SB 575 – N06059

SB 564 – N06059

SB 626 – N06059

EN 10028-3-P275 NH

EN 10028-3-P275 NL1

EN 10028-3-P275 NL2

EN 10028-3-P355 N

EN 10028-3-P355 NH

EN 10028-3-P355 NL1

EN 10028-3-P355 NL2

SA 182 F304L-S30403

SA 213 TP304L-S30403

SA 240 304L-S30403

SA 312 TP304L-S30403

2. All ASME materials have been revised to be in agreement with the ASME II Part D

Ed. 2004

3. The allowable stress calculation for non ferrous materials under AD-MERKBLATT

code has been added.

4. The calculation according to ISPESL-VSR of elliptical and torispherical heads with

nozzles outside the 80% of the diameter has been added to the program.

5. The girth flanges calculation according to AD-MERKBLATT has been fixed. The

calculation crashed when bolts different from DIN 2510 were specified.

6. The bolts table TEMA D-5M has been added to the bolts database.

7. The calculation of the flanged flat head has been fixed. The program went in loop

when the hydraulic test pressure was the controlling condition.

8. The analysis of adjacent nozzles has been added to the program.

The nozzle subprogram has been completely revised giving the possibility of

specifying until four nozzles on the same base component.

Note. Because of the deep revision, all the nozzles calculations processed with the

previous program versions after June 30, 2004 must be reentered manually. The

calculations processed before June 30, 2004 are read by the program and

automatically converted to the new version.



9. The following new materials have been added to the materials database:

SA 193 B7M / SA 194 2HM

10. The check of TEMA RCB-2.5 related to the tube pitch in the tubesheet calculation

has been added.

11. The values of the table VSR.1.E.3 related to the formed head have been corrected

according to the Errata Corrige of 31/03/2003.

12. The thickness tolerance has been added in the calculation to the external pressure of

the formed heads and conical sections according to ASME.

13. The possibility to specify from input the nozzles reinforcing limits along the wall

and along the pipe has been added to the program. When these values are specified,

the program will assume the least value between the given value and the value

calculated according to the code.

14. A bug in the analysis of adjacent nozzles related to the specification of a negative

offset has been fixed.

15. The minimum thickness for pipes according to ISPESL-VSR.1.M has been added to

the program. This value is applied for pipes diameter of 220 mm and under.

16. The calculation of the external radiuses of the nozzles (a1, a2) required for the

adjacent nozzles analysis according to ISPESL-VSR and AD-MERKBLATT has

been modified to take into account for the changing of the radius along the

longitudinal and circumferential direction of the nozzle. The values of a are now

calculated along the line passing through the center of the nozzles.

17. Some incongruencies related to the management of the pipe material in the nozzles

calculation have been fixed. The discrepancies were due to the “pipe material

selection” and the “Maximum Nominal Diameter from pipe”.

18. The nozzle direction has been added to the nozzle input data to be specified as:

radial / inclined / offset.

This makes easier for the user to specify the nozzle geometry and positioning.

N.B. The user should revise the input of previous calculation to comply with

this new code.

19. The calculation of the backing ring of the floating head (types 1 and 4) for ISPESL-

VSR code has been modified according to TEMA RCB-5

20. The nozzle drawing for hillside nozzles (180° orientation) has been fixed.

21. The Idraulic Test Pressure specified in input is now converted using the proper

conversion factor.

22. In the nozzle check performed using the VSR code, a warning message is issued

when (d/2*ri) > 0.5. All checks have been revised to be compliant with the rules of

VSR 1.k.2.2.

23. The nozzle calculation for nozzle from pipe at high pressures has been fixed.

24. The nozzle calculation for not standard nozzles has been fixed.

25. The check on adiacent nozzles is now performed correctly also in case of non-

compensated nozzles with the same heigth and orientation.

26. The elastic constant in the axial direction has been considered in the calculation of

the Expansion Joint according to the VSR Code (VSR.1.N.7).

27. The tubesheet calculations according to ASME Section UHX have been included in

the program features.

28. The thin expansion joint according to ASME App.26 has been included in the

program features.




1. The following materials have been added to data base:

SA 240 GR410S

SA 268 TP410

SA 182 F6aCL2

SA 240 S31803

SA 182 F51

SA 789 S31803

SA 387 GR11 Cl 2

SA 336 F 11 Cl 2

SB 626 N10276

SB 564 N10276

SB 619 N10276

EN 10025 - S235 JR

EN 10025 - S275 JR

2. ASME Chart CS-3. Now the test for T > 300 °F is correctly done.

3. Audit Report - Nozzle. If the nozzle diameter is less than the minimum to be

reinforced a note is now printed in the datasheet for explicitely indicating why the

calculation has been skipped.

4. Floating Head. Is now possible to select a different material for the Split Ring and

the Floating Flange.

5. Audit Report. The compensation for large openings (ASME) is now calculated

correcty.

6. Nozzles. If the nozzle heigth is supplied in input, it will be mantained alerting the

user if less than the one required by the program.

7. LAN version. Installing programs on the server, they can be executed from any PC

connected in the LAN.

8. TEMA Expansion Joint. The calculation has been fixed for avoiding the possibility

to calculate a negative number of cycles.

9. TEMA Expansion Joint. Also with more than one wave now the Audit Report

reports also the internal element conditions for the Hydraulic test.

10. Nozzle Table. LWN for DN 15, 20 mm have been included.

11. Nozzles. The minimum welding distance is now computed taking care of the

maximum distance for compensation, as required by Codes.

12. Formed Heads. The thickness supplied in input is assumed as is without rounding it

to the nearest mm.

13. Bolt Table. The reference name of the table has been corrected in "TEMA Tab. D5"

from "ANSI B18.22" as erroneously indicated before.

14. Nozzles. The formula for "lm" in the VSR/AD-MERKBLATT Audit Reports has

been fixed. Now it is congruent with the calculation.

15. Diagnostic Messages. The messages have been completely revised for a better

understanding of them. In most cases also values who generated the message are

also printed.

16. Expansion Joint. The calculation of number of cycles is now controlled for avoiding

overflow error.

17. Skirt . The error occurring in verifiyng the bolts of the using the "User" standard has

been fixed.



18. The neck length for Elliptical/Torispherical heads has been added as input datum.

The user can, now, force a different value from the one calculated by the program.

19. The thickness of the formed heads in check for VSR code has been fixed.

20. The table VSR.1.E.1 of the coefficients C/Co related to the calculation of formed

head according to ISPESL-VSR has been revised according to the Rev.1995 of the

code.

21. The reduction factors for bolts loads have been added to the calculation of girth

flanges according to VSR.

22. The calculation of the tubes tension and compression according to TEMA has been

fixed in case of simultaneous pressures.

23. A bug in the calculation of conical section to internal pressure according to AD-

MERKBLATT has been fixed. The calculation did not converge for very low values

of the pressure.

MT-COMP Revision 2.4.0 (June 2003)

1. The following new components have been added to the program:

- tubes of the bundle

The program provides for the calculation, according to the specified code, for the

internal and the external pressure.

Special attention has been given to the U tubes and to the bent section of the U

tubes; the checks required by TEMA RCB-2.31 and ASTM A556 can be required as

an optional calculation.

The user has also the possibility to specify two different thicknesses for the U tubes

related, respectively, to the first rows and to the other rows of the tubes.

Criteria for the calculation of the tubes development, both simplified and analytical,

have been provided.

2. The calculation in check has been added to the tubesheet analysis.

In this case the imposed thickness is checked against the minimum required by the

code and a warning message alerts the user if the check is not satisfied.

3. A warning message has been added to the tubesheet calculation in design mode

when the calculated thickness is greater than the minimum value specified by the

user.

4. A control has been added to the AD-MERKBLATT calculation of selfreinforcing

nozzle over elliptical or torispherical head when the nozzle is located outside the

area of 0.6*Da according to section B3.

5. The conversion factor for the moment generated by the wind in erection at the

bottom of the skirt has been fixed.

6. The thicknesses of the risers of the split ring have been added in input to the floating

head component.

This gives the user the possibility to overcome the values assumed by default by the

program.

7. A control has been added to the MAWP calculation of the girth flanges according to

AD-MERKBLATT to avoid program crash in the pressure calculation loop.

8. The lap diameters for Lap Joint flanges are zeroed in design mode to clear the input

fields after a check calculation has be performed.

9. The analysis of tubes to tubesheet welding according to ASME VIII Div. 1 Para.

UW-20 has been added to the program.

The analysis has been added to the tubesheet component.



10. The conical section in check mode have been revised to add bending radius and

neck length or ring area and distance, depending on the cone construction type,

witht or without knuckles.


1. The following new components have been added to the program:

- support skirt

- support legs

2. The material data bank has been revised with:

- addition of the material FE 42-1 UNI 5859-66

- Revision of the ASME materials according to the ASME II – Part D addenda

2002. The new revised material have the revision year 2002.

3. The ISPESL-VSR code has been updated to be harmonized with the European PED.

The most important changings refer to:

- The safety factor for allowable stress in hydraulic test has been changed from

1.1 to 1.05

- The hydraulic test pressure is now calculated as the maximum value between:

Pid = 1.43 * Pd

Pid = 1.25 * Pd * f20/ft

4. The AD-MERKBLATT code has been updated to be harmonized with the European

PED. The most important changings refer to:

- The safety factor for allowable stress in hydraulic test has been changed from

1.1 to 1.05

- The hydraulic test pressure is now calculated as the maximum value between:

Pid = 1.43 * Pd

Pid = 1.25 * Pd * f20/ft

5. All the writings in the output results have been translated in Italian language. The

language of the output sheets is now congruent with the language selected for the

input.

6. The Design/Check code in the expansion joint component has been fixed.

7. Controls have been added to the local load analysis according to WRC 107 to alert

the user when the parameters are out of the plotted curves.

8. Saddles calculation as per ZICK-VSR code. The transition plate data written on the

output data sheets have been fixed.

9. Expansion joint according to TEMA. The formulas for the calculation of the cycles

number has been corrected according to the latest edition of the ASME VIII Div.1

App. CC-3

10. The nozzle local load calculation according to the H.E.I. code has been added to the

program.

11. The management of the LWN flanges according to UNI/ISO has been fixed. The

flanges are now managed as ANSI flanges because they are not provided in

UNI/ISO standard.

12. The equivalent diameter DL for tubesheets as per VSR code has been corrected

according to VSR.1.N.2.

13. The hub outside diameter for LWN flanges has been added to the flanges database.

The program for the database management has been updated accordingly.

14. The field related to the external pressure in the flat flanged heads program has been

disabled. The external pressure is not taken into consideration in the flanged flat

head covers.



15. The warning messages in the cylindrical shell program have been revised to cancel

wrong messages printed out by the program.

16. A control has been aded to the brackets calculation when the check is not satisfied.

17. The allowable stress calculation as per VSR code related to Ni & Alloys and Ti &

Alloys has been modified according to the VSR.2 Edition 1999.

18. The minimum required thickness at the external pressure for cylindrical shells

according to ASME has been fixed.

MT-COMP Revision 2.2.0 (May 2002)

1. The following new materials have been added to the material archive:

- SB 265 GR 9 2991/2001

- SB 861 GR 9 2992/2001

- SB 338 GR 9 2995/2001

- SB 265 GR 12 2951/2001

- SB 861 GR 12 2952/2001

- SB 381 GR F12 2953/2001

- SB 338 GR 12 2955/2001

- X5CrNi 189 DIN 17440 5011/1972

- X2CrNi 189 DIN 17440 5341/1972

- X10CrNiTi 189 DIN 17440 5321/1972

- X5CrNiMo 1810 DIN 17440 5301/1972

- X2CrNiMo 1810 DIN 17440 5311/1972

- X10CrNiMoTi 1810 DIN 17440 5331/1972

- St 37.0 DIN 1629 5362/1984

- St 44.0 DIN 1629 5422/1984

- C 22.8 DIN 17243 5073/1990

- C 21 VdTUV 39913 5093/1996

- Ck 35 DIN 17240 5094/1976

2. The calculation of tolerances in ASME and VSR Heads has been fixed.

3. The subroutines for reading info from Windows register have been modified for

allowing to non-administrators in Windows NT/2000 to read the register.

4. The minimum thickness specified in input for cones and formed heads has been

changed from "corroded" to "istalled".

5. The minimum ring size for calculation to external pressure has been added in

input. Now the user can select a range of values in the ring database when

calculating to external pressure.

6. The option of selecting the combined moment of inertia has been added to the

input data. Selecting a combined moment of inertia will take into account for the

contribution of the vessel barrel to the moment of inertia.

7. Materials change cards have been fixed. Changes for the materials following the

first were not enabled.

8. The schema of the nozzle on the flat heads has been modified to show correctly

the flat head.

9. The calculation of the Lap Joint flanges with hub according to ASME and VSR

has been fixed.

10. The bolts allowable stress for flat flanged cover according to AD-MERKBLATT

has been fixed. (Yeld strength divided by 1.5 or 1.1 according to section B7).

11. The calculation of the minimum required thickness to external pressure has been

added to formed heads calculated according to ASME.



12. The program ESL has been modified to allow the management of the Key on

operating systems based on unicode (WINDOWS 2000 Chinese version)

MT-COMP Revision 2.1.0 (January 2002) (Previous one: 8.0.3)

1. The program has been updated to the latest ASME VIII Div.1 2001 Edition.

2. General revision of the tubesheets and expansion joint calculation according to

the TEMA heighth Edition 1999.

3. Calculation of the flange rigidity according to the section S-2 of ASME VIII

Div.1 Appendix S.

4. The tables of bolts data for girth flanges calculation have been implemented until

4 inches bolts diameter.

5. Lap Joint flanges have been added to the program.

6. A control has been added to the calculation of flanges according to AD-

MERKBLATT to check if the yield strength at the design temperature is equal to

zero. In this case a warning message is sent to the user and the yield at room

temperature is assumed.

7. The icon on the warning messages at the end of the calculation has been changed.

8. The nozzle program in check has been fixed to allow the reinforcing pad data

visualization.

9. The calculation of the floating heads according to ASME and VSR has been

revised to avoid convergence missing during the calculation.

10. Some warning messages related to the floating head have been revised to avoid

misunderstanding.

11. A control has been added in the MAWP calculation of cones without knuckles

and with half-apex angle greater than 30°.

12. The limit to the bolts size of 52 mm has been taken out from the floating head

calculation.

13. The possibility of selecting the printer has been added in all the printouts.

14. The drivers for the ESL device have been updated.

MT-COMP Revision 8.0.3 (September 2001)

1. A controll has been added to the MAWP calculation of flat flanged head. The

MAWP is not calculated when the controlling thickness does not depend on the

pressure.

2. The length of the path for the file name of shells and heads has been updated at

256 characters. It was set before at 65 characters and the calculation went in error

for path longer than 65 characters.

3. The neck length calculation of expansion joint has been fixed.

4. The MAWP calculation for hydraulic test pressure on the floating head

component has been fixed.

5. The value of the external pressure has been modified to allow both negative and

positive value on all the components.

6. The material name of the tubesheet printed on the calculation datasheet has been

fixed.

7. The code “No reinforcement” has been added to the type of reinforcement of

nozzles. When no reinforcement is selected the program calculates the pipe

thickness only and no compensation analysis is done.

The user should pay attention to correct this field when rerunning old

calculations.



8. The contribution of the pass partition ribs has been added to the floating flange.

The method of calculation is taken from TEMA RGP-RCB-11.7

9. Operating temperatures on the fixed tubesheets are now assumed as the

corresponding design temperatures if the user does not specify them.

10. Some bugs on the material changes have been fixed.

11. A flag showing that the material data have been changed has been added to the

program.

MT-COMP Revision 8.0.2 (May 2001)

1. The AD-MERKBLATT (German code) has been added to the program.

2. Some bugs have been fixed in the conical section calculation program.

3. A warning message has been added to the conical sections program when the half-

apex angle is greater than the maximum value allowed by the code.

4. The formula of APM in the datasheet of nozzle compensation in the

circumferential plane (according to ISPESL-VSR) has been fixed.

5. The reinforcing pad material description has been blanked on the nozzle datasheet

page when no reinforcing pad has been installed.

6. The formula of Lm in the datasheet of nozzle compensation for nozzle over

formed heads (for ISPESL-VSR code) has been fixed.

7. The “Import data” control has been added to the wall data section of the nozzles

program.The data of the wall needed for the calculation can be now filled up

automatically downloading the values from the wall component file.

8. The minimum corroded thickness of the shell barrel in the cylindrical shell

program has been replaced by the minimum installed thickness.

9. In the check of the cylindrical shell to external pressure, the stiffening ring is now

taken into consideration.

10. Stiffening ring data different from the values stored in database can be now

specified in the check calculation of the cylindrical shell to external pressure. The

modified values refer to the current calculation only.

11. The reaction of the gaskets due to the partition ribs has been added to the

calculation of the girth flanges. The calculation method is according to TEMA

RGP-RCB-11.7

12. The bolts data table has been updated with:

- addition of the bolts as per DIN 2510

- addition of the bolt hole diameter for girth flanges and floating flanges

The calculation subroutines for girth flanges and floating flanges have been

revised accordingly.

13. The possibility of specifying the minimum bolt size in the calculation of girth

flanges and floating flanges has been added to the program.

14. The gaskets data table has been updated to insert the AD-MERKBLATT gaskets.

The calculation subroutines for girth flanges and floating flanges have been

revised accordingly.

15. The stiffening ring data table has been updated to insert the quota Xg (baricenter

distance from the ring vertical mid line)

16. Self energizing gasket has been added to the gasket table.

The girth flanges calculation subroutine has been updated to avoid calculation

crash when using this type of gaskets.

17. The yield strength values vs temperature have been added to the material changes

quantities.



18. The problems due to the resizing of the forms to comply with the screen

resolution have been fixed. The program now behaves correctely for screen

resolution of 800x600 and above.

19. For safety reasons the ESL key management has been updated. The program ESL

in the group of service programs provides for several functions to manages the

key.

20. A leading zero has been added to the decimal numbers less than 1 in the

calculation results and in the audit report datasheets.

21. Code paragraphs have been added to all the audit report datasheets.

22. The value of lm in the nozzle compensation datasheet has been fixed.

23. The unit N/mm has been added to the spring rate quantity in the units system file.

24. The system S.I. has been modified selecting N/mm for the spring rate quantity.

25. For the following materials the yield strength values vs temperature have been

revised:

- A 193 B7

- A 193 B16

- A 320 B8 Cl 1

- A 320 L7

The values of the yield strength have been taken from the table Y.3 of ASME II

Part D addenda 1999.

26. The local loads analysis according to WRC 107 and WRC 297 has been added to

the program.

27. The function “save” has been added to the Audit Report datasheet. This function

allows the user to save the datasheets as zip files that can be in a second time

unzipped and viewed with any drawing program allowing bit map drawings like

Paint.

28. The calculation of the maximum working pressure for the hydraulic test condition

with corroded thicknesses has been added to the program.

29. Some minor bugs have been fixed.

MT-COMP Revision 8.0.1 (October 2000)

1. The formula

lm = Min( lm, la>0 )

has been added to the nozzle compensation datasheet according to ISPESL-VSR

code.

2. The voice “Min” has been taken out from the description of the final installed

thickness in all the calculation datasheets

3. The minimum thickness of the nozzle specified in input has been corrected to

comply with the internal thickness representation.

4. The current page has been preset in the printout page of the calculation datasheets.

5. The calculation of the moment of inertia and the shell area has been fixed in the

calculation of cylindrical shells to external pressure according to ASME. The

values were multiplied by 2.

6. A controll has been added to the calculation in check mode of the cylindrical

shells to external pressure according to ASME.

The message is printed out when the check is not satisfied.

7. The datasheet for welded flat heads constructed in more pieces has been added to

the program.

8. The help on line has been added to the program.



The help can be opened from the “help” item on the menu bar or pushing the

F1 button on all the input fields of the program

MT-COMP Revision 8.00(June 2000)

1. A control has been added in the convergence calculation of tubesheet and

expansion joint to avoid looping.

2. A bug has been fixed in the calculation of the nozzle compensation according to

ASME.

An infinite loop was generated in the MAWP calculation.

3. The MAWP calculation for cylindrical shells has been fixed.

4. The convergence criteria for formed heads under external pressure according to

ASME has been optimized.

5. The formula for MF0 in the girth flanges datasheet has been fixed. The

calculation was correct, but the formula was wrong.

6. The calculation of the flanged extension for type H tubesheets according to VSR

code has been fixed.

7. The gasket table has been ported on external file and can be customized by the

user.

8. The nozzles database has been ported on external file and can be customized by

the user.

9. The bolts database has been ported on external file and can be customized by the

user.

10. The stiffening rings databasehas been ported on external file and can be

customized by the user.

11. The output printouts have been extensively checked to comply with the new

version of the program.

12. The user manual has been rewritten to comply with the new version of the

program.

NOTICE!!!

This is the first revision of the program running under

WINDOWS 95 / NT

Due to the many improvements to the program, the old input files

are no more compatible with the new program version. Old

calculations must be, then, reentered.

MT-COMP Revision 6.07(January 2000)

1. The rounding on MAWP for shell and heads has been canceled to avoid

calculation incongruency.

2. Nozzles calculation check in English units has been fixed. Some variable were

passed in wrong units for external pressure calculation.



3. The shell program has been modified to show the minimum thickness required to

resist to external pressure.

4. An error of division by zero has been fixed in the local loads calculation when K2

> 5 and C" = 0.

5. The second sheet of the local loads datasheet has been fixed. Some fields were

overwritten.

6. In the nozzles data page the unit of the nominal diameter has been set forth in mm

even for english units.

7. For self-reinforcing nozzles the value of lm (height of reinforcing thickness) is

now selected as the minimum between the value specified in input and the value

calculated by the code. The corresponding fields on the datasheet have been

modified.

8. The “no flange” code has been added to the nozzles data to allow calculation of

nozzles without flange.

9. The limit of 50 tons has been taken off from the check of brackets in vertical

vessels.

10. The math error on tubesheets calculation has been fixed. In some cases, during the

optimization loop, the tubesheet thickness became lower than the minimum

thickness causing the crash of the program.

11. The math error on expansion joint calculation has been fixed. In some cases,

during the optimization loop, the neck thickness assumed a negative value causing

the crash of the program.

12. The year fields have been changed on all the input data screens and an all the

components datasheet so to accept a four digits year.

13. A control has been added to the calculation of factor f in the girth flanges program

when the values of g1/g0 and h/h0 go outside of the diagram limits. This control

has been added to the ASME and VSR calculation.

14. The ASME nozzles program has been totally revised with the addition of:

- contribution of the weld areas to the nozzle compensation.

- Inclined nozzles analysis

- Welding load analysis

The datasheet pages have been revised to comply with the new functionalities.

15. The VSR nozzles program has been totally revised adding the followings:

- contribution of the welds areas to the nozzle compensation.

- Inclined nozzles analysis

The datsheet pages have been revised to comply with the new functionalities.

16. The conical section calculation in check has been revised to fix some

discrepancies and errors

17. The expansion joint according to the VSR code Ed. 1999 has been added to the

program.

18. All the ASME materials have been revised according to the ASME II – PART D

addenda 1999. All the revised materials have the revision year 1999.

19. The hydraulic test pressure for ASME code has been changed according to the

addenda 1999. The multiplying coefficient has passed from 1.5 to 1.3.

20. Some minor bugs have been fixed.



MT-COMP Revision 6.06(June 1999)

1. The calculation of the factor B for external pressure related to the compression

stress of tubes has been modified according to the ASME UG-23.

2. The writing “@contr.cond.” has been added to the allowable stress in design in

the output results of tubesheets calculation.

3. The external pressure field in the formed head program has been fixed. It was

disabled.

4. The conversion factor on the equation (u=ro * (r/s)**0.5 / r) related to local loads

on nozzles on formed heads has been fixed on the datasheet.

5. The calculation of the local loads at pad edge has been removed for nozzles on

heads.

6. The weight and volume of cylindrical shell is now calculated according to the

shell length. The values calculated before were referred to 1 mm.

7. A warning message has been added to the check of cylindrical shells to external

pressure when the thickness is not sufficient to resist to the external pressure.

8. A bug in the MAWP calculation to external pressure of cylindrical shells has been

fixed.

9. The initializations of stiffening rings data used by cylindrical shells to resist to

external pressure has been fixed. Values of previous calculations kept memorized

for new calculations.

10. The cone type printout (concentric/eccentric) has been fixed on the cone

datasheet.

11. The message “check not required” has been added to the bolt seating section of

the floating head datasheet when ring + spacer configuration is selected as

backing device.

12. The bending radiuses of elliptical heads have been changed according to ASME

VIII.1 par. UG-32(d).

13. The check calculation of formed heads has been added to the program.

14. The flanged flat head calculation according to VSR has been fixed. The program

went in error when one nozzle only was specified on the head.

15. The printout of the hydraulic test pressure in the girth flanges module has been

fixed. The conversion factor between Kg/cm2 and Mpa was wrong.

16. The hydraulic test pressure forced by input has been fixed in the nozzle module of

the program.

17. The MAWP calculation of nozzles in check has been corrected.

18. The procedure for the calculation of the minimum thickness of cylindrical shells

to external pressure has been revised to avoid convergence problems.

19. The option for the calculation of bolts area with factor 1.72 or 1. has been added

to the floating head module when ring+spacer is selected as backing device.

20. All the writing PSIA and PSIG have been changed to PSI in the program printout

and datasheets.

21. All the values related to thicknesses and lengths are now printed with 3 decimal in

the datasheets when English system unit is selected.

21. The reinforcing pad calculation has been fixed when maximum diameter was

specified by the user. This value was assumed as the effective pad diameter.

22. The datasheet for self reinforcing nozzles in check has been added to the nozzle

program module.



MT-COMP Revision 6.05(September 1998)

1. The f factor in the girth flanges calculation has been optimized to have a lower

bolts circle diameter.

2. The material SB-575 (HASTELLOY C-276) has been added to the materials

databank with the code 2901.

3. A control has been added in the floating head program when the cover thickness

specified by the user is lower than the minimum calculated by the program.

4. For integral rectangular flanges calculated in check mode the initialization of the

parameters g0 and g1 has been fixed.

5. The calculation of the reinforcing pad for nozzles greater than 1000 mm has been

fixed.

6. The intermediate tubesheet code in the girth flanges program has been fixed.

7. The material revision code has been changed to be compliant with the year 2000.

8. The external MAWP for cones according to ASME has been fixed.

9. The flange rating as function of the unification has been fixed in the nozzles

program input screen.

10. The external MAWP for nozzles according to VSR has been fixed.

11. The flanged flat covers program has been revised for:

- datasheet printout when in check mode

- fixing of MAWP calculation

12. The length of the internal projection of the nozzle has been added to the nozzle

program.

MT-COMP Revision 6.04(February 1998)

1. Some initializations have been done to avoid fields overwriting in nozzle program

and expansion joint program.

2. UNI bolts M8 and M10 have been added to the UNI bolts table.

3. The option of NO-TEMA calculations has been added to the girth flanges

program.

4. A check has been added to all the components programs to force the joint

efficiency input.

5. The asbestos has been canceled from all the gaskets description.

MT-COMP Revision 6.03(December 1997)

1. The nozzles nominal diameter in inches has been introduced in the list of nominal

diameter.

2. Page 4 of floating head datasheet has been corrected.

3. The bolts circle diameter has been fixed in check calculation of floating head

program.

4. The total number of page on the floating head datasheet has been corrected in case

of split ring + spacer.

5. The compression allowable stress when t/r > 0.015 has been fixed in the

calculation of saddles according to Zick-ASME.

6. The initial zeroing of stiffening ring data in the calculation of saddles according to

Zick has been introduced to avoid fields overwriting.

7. The direct datasheet printout on the printer has been fixed.



8. The initial zeroing of diagnostic messages has been revised on all the components

programs to avoid overwriting.

9. The wrong printing of diagnostic messages 1001A / 1001B for the flanges

calculation in the design has been corrected.

10. The effective gasket width has been added to the flange printout.

11. Some bugs have been fixed.

12. The program has been corrected to allow running under the DOS window of

WINDOWS 95.

MT-COMP Revision 6.02(September 1997)

1. The local loads analysis according to B.S.5500 method has been introduced.

2. The datasheet for flat welded heads has been added.

3. Errata Corrige per TEMA RCB-7.1341 has been introduced for the calculation of

the flanged extension of tubesheet.

4. The error generated during the calculation of nozzles with lining has been fixed.

5. The page of the datasheet related to the analysis of the cone as a stiffening line

has been corrected. The name of the ring was not printed.

6. Some bugs have been fixed in the calculation of the expansion joint according to

TEMA.

7. The values of Pd, P’t, P’s have been added to the results printout of tubesheets

calculation.

8. The description of the calculation conditions has been introduced in the fixed

tubesheets. When the description is given it overcomes the standard description

provided by the program.

9. The description of the calculation conditions has been introduced in the expansion

joint program. When the description is given it overcomes the standard

description provided by the program. When the expansion joint is called from

within the tubesheet program, the descriptions specified in the tubesheet are used.

10. The overlapping of the field Sj < in the first datasheet page of fixed tubesheet has

been corrected.

11. The fields P1w and P2w in the first datasheet page of fixed tubesheet have been

modified to comply with the new description fields introduced.

12. The girth flanges calculation has been optimized for high pressure calculation.

13. The gasket description can now be specified for girth flanges and floating head

programs. The given description overcomes the description stored in the program.

14. The control to force the specification of gasket code has been introduced in the

girth flanges and floating head programs.

15. The MAWP calculation has been completely revised for girth flanges and flanged

flat covers.

16. The following types of tubesheets have been added to the program:

- Stationary / welded both sides / straight tubes

- Stationary / welded both sides / U tubes



MT-COMP Revision 6.01(March 1997)

1. Saddle stability check calculation with ZICK method has been introduced.

2. Brackets selection and stability check method according to B.S. 5500 has been

introduced.

3. Calculation of cylindrical shells in function of the external diameter has been

introduced. When the external diameter is specified it is kept constant and the

internal diameter is modified.

4. Nozzles calculation has been revised to exploit the new possibility of keeping

constant the external diameter.

5. Nozzles and cylinder routines have been modified to allow datasheet generation

when the calculation is in check mode.

6. The nozzles openings check is now done on the base of the minimum diameter to

be reinforced specified in input. If this diameter is not specified the rules given by

the CODES are applied.

7. The calculation of the hydraulic test pressure according to the ASME has been

corrected.

8. The calculation of torque for bolts seating has been introduced for girth flanges

and floating heads routines.

9. Some bugs have been fixed.

MT-COMP Revision 6.00(January 1997)

This revision of the program has been totally rewritten to comply with the 1995 Edition

of the ISPESL.VSR code. Many new features have been introduced in the new version;

among the others:

1. Design or check mode allowed for all the base components calculation.

2. Different systems units allowed:

- Metric

- English

- S.I.

Conversion between the systems is done automatically by the program.

3. Maximum allowed pressures calculation provided for all the base components.

4. Allowable stresses can be specified by input, overriding the ones calculated by the

program from materials database.

5. Thickness tolerances are taken into consideration in the ticknesses calculation.

6. Automatic datasheet generation with formulas and substitutions for inspection

approval.

7. Different systems units and languages allowed for the datasheets generation.

Documents

MT-COMP Revision History MT-COMP Revision … Revision History MT-COMP - Revision History MT-COMP Revision 3.2.0 (January 2008) 1. The ASME VIII Div.1 code has been updated to the