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1、BRITISH STANDARD BS 5276-4: 1977 Specification for Pressure vessel details (dimensions) Part 4: Standardized pressure vessels UDC 621.772.4:621.642:66.023 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:29:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5276-4:1977 This British Standard,
2、having been prepared under the direction of the Pressure Vessel Standards Committee, was published under the authority of the Executive Board on 31 August 1977 BSI 03-2000 The following BSI references relate to the work on this standard: Committee reference PVE/II Draft for comment 75/75587 DC ISBN
3、0 580 09795 1 Cooperating organizations The Pressure Vessel Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following Government departments and industrial and professional organizations: Associated Offices Technical Committee* Asso
4、ciation of Shell Boilermakers British Chemical Engineering Contractors Association* British Compressed Gases Association British Gas Corporation* British Insurance (Atomic Energy) Committee British Steel Industry* CBMPE* Chemical Industries Association* Department of Trade (Marine Division) Electric
5、ity Supply Industry in England and Wales* Engineering Equipment Users Association* Health and Safety Executive Institution of Chemical Engineers Institution of Gas Engineers* Institution of Mechanical Engineers* Lloyds Register of Shipping* Oil Companies Materials Association* Process Plant Associat
6、ion* The Welding Institute United Kingdom Atomic Energy Authority University of Manchester Institute of Science and Technology Water-tube Boilermakers Association The organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entr
7、usted with the preparation of this British Standard: Association of Consulting Engineers Association of Hydraulic Equipment Manufacturers British Valve Manufacturers Association National Association of Drop Forgers and Stampers Amendments issued since publication Amd. No.Date of issueComments Licens
8、ed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:29:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5276-4:1977 BSI 03-2000i Contents Page Cooperating organizationsInside front cover Forewordii 1Scope1 2References1 3Terms and symbols1 4Shapes1 5Dimensions1 6Internal pressure rating of basic unpi
9、erced vessels2 7Other requirements2 Appendix A Relationship between inside crown radius R and inside knuckle radius r11 Figure 1 Terms and symbols for basic unpierced vessels3 Table 1 Volumes, diameters and aspect ratios of standard vessels4 Table 2 Lengths of vessels6 Table 3 Vessel thicknesses and
10、 pressure coefficients8 Table 4 Dimensions of domed ends10 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:29:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5276-4:1977 ii BSI 03-2000 Foreword This British Standard has been prepared under the dir
11、ection of the Pressure Vessel Standards Committee to cover the dimensions of pressure vessel details. It has been arranged in Parts as follows: Part 1: Davits for branch covers; Part 2: Saddle supports for horizontal cylindrical pressure vessels (in course of preparation); Part 3: Dimensional tolera
12、nces for pressure vessels (currently Draft for Development DD 42); Part 4: Standardized pressure vessels. This Part replaces BS 3161 and is confined to unfired cylindrical pressure vessels for horizontal and vertical use in the chemical and allied industries. Only one of the shapes of domed ends pre
13、viously shown in BS 1966 is specified; this is the torispherical 2 : 1 radius/height ratio in terms of the inner profile (domed ends with 6 % and 10 % knuckle radii are not currently included). It is intended that the module system adopted for the shell cylinder lengths will lead to economies in the
14、 manufacture of carbon steel and carbon manganese steel vessels by reducing the number of plate sizes used and minimizing the equipment required for fabrication. This Part covers dimensions and pressure ratings for basic unpierced vessels thereby providing an aid to selection of standardized vessels
15、 and is intended for use in conjunction with BS 5500 “Unfired fusion welded pressure vessels”. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does
16、not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 12, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. Thi
17、s will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:29:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5276-4:1977 BSI 03-20001 1 Scope This Part of this British Standard specifies requirements for cylindrical vessels with
18、torispherical domed ends. The lengths and thicknesses of the shell cylinders are based on standard carbon and carbon manganese steel plates. Permissible internal pressures for the domed ends and shell cylinders, not taking account of openings, can be calculated using the dimensions and pressure coef
19、ficients stated in this standard together with the relevant stress values obtained from BS 5500. The overall design of vessels, their fabrication and testing shall be in accordance with BS 5500. For vessels that are outside the range of sizes covered, it is recommended that shell cylinder lengths sh
20、ould be derived using the modular method described in 5.2.1. 2 References The titles of the publications referred to in this standard are listed on the inside back cover. 3 Terms and symbols For the purposes of this British Standard the terms and symbols illustrated in Figure 1 apply. 4 Shapes 4.1 S
21、tandard diameters and lengths of shell cylinders shall be as shown in Table 1 and Table 2 together with the nominal volumes contained within the vessels and their aspect ratios (length : diameter). Table 1 facilitates the selection of a standardized vessel for a required capacity, diameter and aspec
22、t ratio. 4.2 Domed ends shall be torispherical as defined in Table 4 in terms of inner profile. 5 Dimensions 5.1 General. Linear dimensions are specified in millimetres, volumes in cubic metres. Diameters of vessels are based on metric inside diameters and, in order to enable manufacturers to utiliz
23、e existing “inch size” forming tools for the domed ends, a variation of 12 mm is permissible on diameters up to and including 1 300 mm. This is a temporary measure and manufacturers are strongly recommended to adopt nominal sizes when re-tooling. 5.2 Shell cylinders 5.2.1 Modular lengths. A standard
24、ized range of modular lengths shall be as given in Table 1 and Table 2. These lengths are based on the use of a single standard width of plate, purchased 2 500 mm wide. Shell cylinder lengths are built up in modular form using full plate widths where possible and fractions of these where necessary.
25、Allowance is made for edge preparation, resulting in fabrication strakes of 2 480 mm (full plate), 1 860 mm (# plate), 1 235 mm (“ plate) and 610 mm (! plate). The use of alternative widths to achieve the overall shell cylinder lengths is not, however, precluded. 5.2.2 Thicknesses. Shell cylinder th
26、icknesses ecyl, which include 1.5 mm corrosion allowance, associated with each diameter shall be as given in Table 3. 5.3 Domed ends 5.3.1 Profile. The dimensions of the inner profile shall be as given in Table 4. It is permissible to use any values of crown and knuckle radii between the stated limi
27、ts provided that the head height is as specified. Appropriate values may be selected using Appendix A. For practical purposes the profiles headed “ellipsoidal” are indistinguishable from ellipsoids of vessel radius/height ratio 2 : 1, which are also acceptable. In the manufacture of domed ends where
28、 advantage is taken of the permissible variation of 12 mm on the nominal diameter (see 5.1) the inside crown radius shall be between 0.75Di and 0.95Di, the inside knuckle radius shall be between 0.125Di and 0.1805Di and the inside height shall be not less than 0.25Di where Di is equal to the inside
29、diameter, as manufactured, of the end concerned. 5.3.2 Lengths of straight flanges. The straight flanges shall be 50 mm long for vessels up to and including 1 700 mm diameter and 65 mm long for vessels above 1 700 mm diameter. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:29:47 GMT+00:00
30、 2006, Uncontrolled Copy, (c) BSI BS 5276-4:1977 2 BSI 03-2000 5.3.3 Thicknesses. Minimum thicknesses eend, which include 1.5 mm corrosion allowance, associated with each diameter shall be as given in Table 3. These have been calculated to match the corresponding thickness ecyl of the shell cylinder
31、 on the basis of equivalent strength. It is the responsibility of the manufacturer to select a suitable plate thickness to ensure that, after forming, the thickness shall at no point in the profile be less than eend and that the thickness of the straight flange when prepared for welding shall be not
32、 less than the thickness ecyl of the shell cylinder. 5.4 Dimensional tolerances. These shall be in accordance with BS 5500 except that the tolerance on the circumference (4.2.4.1.1 of BS 5500:1976) shall be increased by 38 mm for diameters up to and including 1 300 mm (see 5.1). General dimensional
33、tolerances for completed vessels shall be in accordance with DD 42. 6 Internal pressure rating of basic unpierced vessels 6.1 Procedure. To determine the shell cylinder and domed end thicknesses for a given pressure and stress, calculate the ratio p f to find the value of the pressure coefficient, k
34、. where Enter Table 3 at the appropriate diameter and find a value of k equal to or greater than the calculated value. Read off ecyl and eend for the thicknesses of the shell cylinder and the domed end respectively. 6.2 Derivation of pressure coefficient k (see Table 3). Coefficients are based on ca
35、lculations to BS 5500:1976 as follows: Shell cylinders, 3.5.1.2 a) Unpierced ends, 3.5.2.3 The calculations include a corrosion allowance of 1.5 mm. In the case of vessels up to and including 1 300 mm diameter calculations are made for diameters inclusive of tolerance and variation (see 5.1). 7 Othe
36、r requirements Irrespective of the category of vessel, if the ends are made from more than one plate, the welds within each end shall be completely radiographed or examined ultrasonically before the end is formed. After forming, the knuckle region of these welds shall be examined by radiography or u
37、ltrasonic means. The following information shall be supplied by the vessel fabricator when ordering ends. a) Inside diameter. b) Minimum thickness (eend). c) End preparation of the straight flange and the associated shell cylinder thickness (ecyl). d) The material specified in accordance with the ap
38、propriate British Standard. e) Any heat treatment requirements. f) Any further inspection requirements. g) Surface finish, if necessary. pis the maximum permissible gauge pressure (in bara) for vessel (including static head where significant). fis the maximum allowable design stress in material (in
39、N/mm2). a 1 bar = 105N/m2= 100 kPa. k p f - -= Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:29:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5276-4:1977 BSI 03-20003 Figure 1 Terms and symbols for basic unpierced vessels Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:29:47
40、 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5276-4:1977 4 BSI 03-2000 Table 1 Volumes, diameters and aspect ratios of standard vessels Volume range Di mm Modular plate length m3!“#11!1“1#22!2“33“44“55“66“77“8 600a0.260.430.610.780.96 6500.310.510.720.931.131.34 7000.360.60.841.081.321.56 750a0.42
41、0.70.971.251.521.79 1 8000.490.81.121.431.732.052.36 8500.560.911.271.621.972.322.68 900a0.641.041.431.832.222.613.013.41 9500.721.171.612.052.482.923.373.81 1 000a0.811.31.792.282.763.253.744.23Nominal volume of vessel m3 1 0500.911.451.992.533.063.64.144.685.21 1 1001.612.22.793.373.974.565.155.73
42、 1 21 150a1.772.423.073.74.3555.646.286.93 1 2001.952.663.364.054.765.466.166.857.56 1 2502.142.93.664.415.185.956.717.468.22 2 31 300a2.333.163.994.795.626.457.288.098.9210.6 1 4002.763.724.675.616.577.548.499.4310.412.3 3 5 1 500a3.224.325.426.57.68.719.810.91214.216.4 1 6003.734.996.237.468.729.9
43、711.212.413.716.218.7 1 7004.285.77.118.499.9111.312.714.115.518.421.2 1 800a4.966.558.139.6811.312.914.41617.620.823.927.1 1 9007.399.1510.912.714.416.217.919.723.226.730.2 5 102 000a8.2910.212.214.116.11819.921.925.829.733.6 2 1009.2611.413.515.717.82022.124.328.632.937.241.4 10 15 2 20010.312.615
44、17.319.722.124.426.831.536.240.945.6 2 300a11.413.916.519.121.724.326.829.434.639.744.95055.2 15 25 2 40015.318.120.923.726.629.332.137.843.44954.660.2 2 50016.819.822.925.929323541.147.253.359.465.5 2 600a18.321.624.928.231.534.738.144.751.257.864.47177.6 2 7002023.52730.634.237.741.248.455.462.669
45、.676.883.8 2 80021.725.429.333.136.940.744.552.259.867.575.182.890.498 24 40 2 90027.531.635.739.843.94856.264.472.680.88997.1105 3 000a29.634.138.542.947.251.660.469.177.986.795.5104113122 3 10031.936.641.34650.655.364.774.183.592.8 102111121130 3 20034.339.344.349.354.259.269.279.289.299.1 1091191
46、29139 3 30036.742.147.452.757.963.373.984.595.1 106116127138148159 3 40039.344.950.656.261.867.578.890101112124135146158169 40 60 3 50047.953.959.965.871.883.895.7108120131143155167179191 3 600a5157.463.769.976.389102114127139152165177190203 3 70054.36167.774.280.994.3108121134148161174188201214 3 8
47、0057.664.771.778.685.799.9 114128142156170184198212226240 W 60 3 90061.168.575.983.290.7106120135150165180194209224239254 4 000a64.672.580.38895.8111127143158174189205220236252267 Aspect ratio 2 : 12 : 1 3 : 1 Shown in light type 3 : 1 4 : 14 : 1 5 : 1 Shown in light type a Preferred rationalized di
48、ameters Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:29:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5276-4:1977 BSI 03-20005 Aspect ratio (i.e. Length between tan lines : diameter) In calculating volumes of vessels “ellipsoidal” values from Table 4 are used for inside crown radii a
49、nd inside knuckle radii of domed ends. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:29:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5276-4:1977 6 BSI 03-2000 Table 2 Lengths of vessels Internal length of vessel Li, mm Modular plate length !“#11!1“1#22!2“33“44“55“66“77“8 Di Lc6101 2351 8602 480 3 090 3 715 4 3404 960 5 5706 195 7 4408 6759 92011 15512 40013 63514 88016 11517 36018 59519 840 mmLt7101 3351 9602 580 3 190 3 815 4 4405 060 5 6706 295 7 5408 77510 02011 25512 50013 73514 98016 21517 46018 69519 940 6001 010