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P. 1DIN028086_1994_Lugs on Process VesselsDIN028086_1994_Lugs on Process Vessels|Views: 2,893|Likes: 17Published by srtools1980yMore info:Published by: srtools1980y on Nov 23, 2011Copyright:Attribution Non-commercialAvailability:Read on Scribd mobile: iPhone, iPad and Android.download as PDF, TXT or read online from ScribdFlag for inappropriate content|Add to collectionSee moreSee lesshttps://www.scribd.com/doc/73561196/DIN028086-1994-Lugs-on-Process-Vessels08/12/2013pdftextoriginalDEUTSCHE NORMJune 1994
Lugs on vessels for use in process engineering
ICS 71.120.10 Trag6sen an Apparaten fUr Montage; MaBe und maximale Krafte In keeping with current practice in standards published by the International a comma has been used throughout as the decimal marker. Organization
and maximum safe working load
November 1977 edition.
1 2 3 4 5 5.1 5.2 5.3 5.4 5.5 6
Scope and field of application Dimensions and designation Quantities, symbols and units Arrangements of lugs Maximum safe working load General. Maximum safe working load of shackles Maximum safe working load of lugs Thickness of reinforcement plates and throat thickness of welds. Load capacity of vessel ends Materials....................................................................
. . . . . . . . . . . . . . . . . .. 5 6 6 . . . . . . . . . . . . . .. 6 6 7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5
Ci; a. o
This standard specifies dimensions of lugs with reinforcement plates for low-alloy and stainless steel vessels, mainly designed for use in process engineering. It also describes a method used to calculate the maximum safe working load of lugs and shackles, as well as the load capacity of dished vessel ends near load attachment points. If vessels are to be lined, compliance with the relevant requirements shall be ensured (cf. DIN 28051 or DIN 28060). NOTE: This standard does not deal with the load capacity of ends of cylindrical vessels or of other vessel components located near load attachment points. The analysis of such parts falls within the responsibility of the user.
Continued on pages 2 to 9.
8euth 02.96
Verlag GmbH, Berlin. has the exclusive
right of sale for German Standards
(DIN-Normen).
DIN 28 086
Sales No. 0109
with a reinforcement
Lug DIN 28086 . see DIN 8570 Part 1.4571
Table 1: Lug dimensions Nominal size
90 110 160 200 240
38 38 50 62 74
h 55 60 75 95 115
170 220 320 390 470
55 71 105 130 155
10 15 15 20 25 dimensions. the type of plug being at the discretion of the manufacturer.
Figure 1: Design details of lug The designation of a lug of nominal size 3.4571.
Vent hole 6.
1) The vent hole size shall correspond
to thread size M 8.
. material plate made of X 6 CrNiMoTi 17 122 steel. tolerance class D.1.1.8 mm in diarneter ') l
The design of lugs and reinforcement plates shall be selected to suit the vessel shell. shall read: number 1. made of RSt 37-2 steel.3 . Where h exceeds the specified that lugs and welds are sufficiently strong to carry the design load. material number 1.Page 2
For general tolerances. care shall be taken To be calculated as specified in subclause 5.4.
The values specified for h are minimum values.0038.0038 .
Table 2: Quantities. AD-Merkblatt (AD Code of practice) BO). AD-Merkblatt Load correction factor Load Strength parameter Number of (uniformly loaded) lugs Vessel outer radius near load attachment points Actual thickness of shell Shell thickness without allowance (so Lug thickness Thickness of reinforcement Intermediate value Load increase factor Angle of sling legs to vertical Angle between sling legs and vertical lug axis Safety factor plate
= se . symbols and units Symbol
Quantity Throat thickness of weld between lug and reinforcement Throat thickness of weld between reinforcement Intermediate value Allowance in case the actual shell thickness is less than the design thickness (ct.DIN 28086
Quantities.c1 . Allowance for wear (ct.c2)
plate and vessel shell
N N/mm2
se So S1 s2
Relating to the vessel end Actual value Relating to the lug arrangement Relating to individual lugs Relating to the vessel mass Relating to the shackle Relating to the reinforcement plate Relating to a specified maximum operating temperature
Arrangements of lugs
Figure 4: Maximum safe working load for two lugs with a double sling: FL = FG/(2 .
. . cos a)
Figure 5: Maximum safe working load for three lugs with a triple sling: FL = FG/(3 . . cos a)
NOTE: Lug arrangements shown in figures 4 and 5 shall not be used to lift vessels from a horizontal into an upright position.
Figure 2: Maximum safe working load for a single lug: FG
Figure 3: Maximum safe working load for two lugs with crossheads:
..._----L--_ -i
~::s~' .
2 to 5. If more than one lug is foreseen.5. 5 50 1 and 2 10 100 3 16 160 4 25 250 5
Table 4: Maximum safe working load. A safety factor. FG. Table 3: Maximum safe working load of shackles. in kN. at 20 °C with KL = 240 N/mm2 19 77 154 149 133 108 77 223 199 163 115 131 262 254 227 185 131 380 341 278 197 218 436 422 379 310 218 633 567 464 328 332 664 642 576 470 332 962 863 704 499
Two lugs with crossheads (cf. FG4).
. for different lug arrangements Item no. Arrangement of lugs Angle a Lug nominal sizes 1
Single lug (cf. care shall be taken that carries an equal share of the load.DIN 28086
5. Fs. in kN Nominal size of associated luqs") 3) Cf. y. the maximum safe working load of the lifting gear is determined by its weakest component.6 shall be taken into account when calculating the safe working load of lugs and vessel ends. figure 2)
Maximum safe working load. The maximum safe working load of each component shall be verified separately in compliance with the specified in subclauses 5.1
each lug maximum thickness methods
Loads shall be applied in the plane of lugs only. of 1. as well as the thickness of reinforcement plates and the throat of welds. figure 4) Over 15 ° up to 30 ° Over 30 ° up to 45 ° Over 45 ° up to 60 ° OOto15° Over 15 ° up to 30 ° 4 Three lugs (cf. figure 3)
38 36 33 27 19 55 50 40 29
0 to 15 ° Two lugs without crossheads (cf. figure 5) Over 30 ° up to 45 ° Over 45 ° up to 60 °
4) The values specified apply to the total safe working load of individual lug arrangements. table 1. As a rule. Fs' in compliance with DIN 82016 or DIN 82101 Nominal size of shackle Maximum safe working load.
Shackles shall be deemed sufficiently strong if FSe does not exceed the Fs values specified in table 3.7 . FGfr
FSe' load for a specified
strong if F Ge does not exceed the maximum
working tempera(5)
of reinforce-
s2 = 0.. Tv.
and a 2. S 2 ::. a spherical cap of the same shape and dimension is selected on which. K = 240 N/mm2. is calculated using the following equation.
FLe •
Its actual thickness. a radial force is exerted.Page 6
Maximum safe working load of shackles
The maximum safe working load per shackle.7 . i.5 S e
Table 5: Load increase factor
The load increase factor.
(9) Table 6: Interrnedlate value A Lug size
Load capacity of vessel ends
In order to rate a vessel end. the total safe working load shall be calculated as a function of the strength parameter using the following equation:
The effective safe working load of lugs and shackles is equal. s2. shall be calculated using the following equation: FSe where F Ge is the effective load.
whichever is smaller. (see figure 1). n is the number of uniformly loaded shackles.
Maximum safe working load of lugs
The maximum safe working load of lugs shall be verified in compliance with DIN 18000 Part 1. shall be deemed adequate
0. Based on a strength parameter.
if they comply with equations (7) and (8) respectively
a. An intermediate value. S 1 min
Thickness of reinforcement plates and throat thickness of welds
Assuming that the load is applied to the reinforcement plates and welds are at an angle ment plates.e. U. If lugs are to be manufactured from materials or are intended for use at temperatures other than those specified in this standard. with exception of the rim.
The throat thicknesses. and s2min equals either
or se' whichever is smaller.
n . is to be calculated using the following equation:
fJ. se' shall satisfy the following condition:
Se ::. shall be selected in compliance with table 5. table 4 specifies the maximum safe working load of lugs listed in table 1 and lug arrangements illustrated in figures 2 to 5.5 . the intermediate value A being given in table 6. cos a
is the angle of the sling legs to the vertical. FSe.
5. s2min
S2. FLe Lugs shall be deemed sufficiently ture.
.. Reinforcement plates shall be suitable for welding.8 0. if the vessel shell is to be subjected to extreme service conditions or temperatures. for both the vessel shell and the reinforcement plate. FLe.3 1.. is given in figure 6 as a function of U..0038.. is thus calculated using the following equation:
f .. W being selected from table 5:
FLe:O.5 1
15 10 9 8 1 6
. in compliance with DIN EN 10025...6
0.. Otherwise.2 1..6 1.4
1. f. Unalloyed and low-alloy reinforcement plates may be welded to stainless steel vessels provided the vessel shell is at least 4 mm thick. shall satisfy the following condition.2
0. The same type of material may also be required.1
0. FB./
5 4 3 2 1.0
KBf}
The effective safe working load applied to a single lug.DIN 28086
The load correction factor. material number 1.5
0. they shall also be made from stainless steel.1
1. The maximum load capacity in the area of load attachment points.8
u -----Figure 6: Load correction factor
Lugs and reinforcement plates shall be made from at least RSt 37-2 steel.. 56 ./ .4
Strength parameters: Ku = 240 N/mm2 (lug)
Figure 7: Vessel and lifting gear
Kyf}
(reinforcement
plate) 2000 mm.Page 8
DIN 8570 Part 1 DIN 18800 Part 1 DIN 28051 DIN 28060 DIN 82016 DIN 82101 DIN EN 10025 AD-Merkblatt BO*) General tolerances for welded structures.
In comparison with the November 1977 edition the following amendments have been made: a) Specifications regarding the maximum safe working load of lug arrangements have been revised. with s1 = 15 mm.
6. table 1). with f3 = 55°. each lug carries an equal share of the load. a = 40 ° and n = 2. arrangement of lugs as in figure 4. Type A lugs without reinforcement plates are no longer included. R c1 = 1 mm. linear and angular dimensions Structural steelwork. Mass of vessel: 7 200 kg.
When the vessel is lifted. D-50939 K61n.77. dished. Lugs of nominal size 2 as in DIN 28086. design and construction Shackles for use on cargo handling gear Shackles Hot rolled unalloyed structural steel products.
. design and construction Design of metallic components designed to receive organic coatings and linings for use in process engineering Pressure vessels and apparatus to be faced with masonry. The analysis of lugs has been based on the method described in DIN 18000 Part 1. c2 = 1 mm. se
K Bf} = 265 N I rnrrr' (vessel end) Vessel end: torospherical. BurggrafenstraBe Luxemburger StraBe 449. b) c) d) e) Design details for vessel ends and reinforcement plates have been included. The standard has been editorially revised. F Ge
72000 N.
Calculation example Given parameters The vessel is lifted as illustrated in figure 7. Thus.
*) Obtainable from 8euth Verlag GmbH. Shackles of nominal size 5 as in DIN 82101 (cf.
12 mm. D-10787
Berlin and from
Verlag KG. technical delivery conditions A1 : 1993) 8erechnung von Druckbeheltem (Design of pressure vessels)
(includes Amendment
DIN 8558 Part 2 Design and workmanship chemical industry of welded joints on steel vessels and storage tanks for use in the
DIN 28086: 11.
1 . 6. the value chosen for a 2 is 9 mm.
Thus.7 . Throat thickness a2 Assuming that s2 = 12 mm and se = 12 mm: a2 :2: 0. as a result of U= 76 .6
894 '
Thus.DIN 28086 Calculation 1. cos 40° 2.1) = 0536 .7 . 12 mm = 8.
5. since se :S: 4. Therefore: 3. and the vessel end may be deemed sufficiently strong for the vessel to hang freely from lugs of a different nominal size or
= FBIW
NOTE: The maximum safe working load.6 and FLe = 46995<53000/1 Result The lugs and shackles appropriate lifting gear. 12 mm = 8. in compliance with figure 6. W = 1.
Throat thickness a1
s1 = 15 mm s2=12mm As indicated in subclause 5. Maximum safe working load for vessel ends Assuming that A = 76 for nominal lug size 2 and.
S 2 :S:
1. 1 . 1. 102 • 265 = 53000 1. (12 .
. the smaller value is chosen: a1 :2: 0. the value chosen for
a.4 mm Thus.
is 9 mm. f = 3. as a result of
f3:s: 60
B 65 D 088/12 F 16 B 045/00
.5 se' the value chosen for s 2 is 12 mm. Maximum safe working load for shackles 72000 FSe = = 46995 < 50 000 = Fs 2 .
= 05 ./2000 .
W = 1. FB. Maximum safe working load for lugs FGe = 72000 3.4 mm Thus.4.
108000 = FG = FGfJ (FG as specified in table 3) plate
Maximum safe working load for reinforcement
Assuming that.2. may be increased a vessel with a thicker end.
:S: 60°.
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