Flange analysis in equivalent pressure method intergraph. Appendix d flange calculation sheets flange calculation sheets blank fillin calculation sheets are given for the following types of flanges. Neles metal seated ball valves,seat supported,full and reduced bore, series x technical bulletin 420 3 1 x 26 en technical specification product type full bore, seat supported ball valve floating ball design split body design pressure ratings asme 150 and 300 size range 1 8 dn25 200 in full bore 3 8 dn80 200 in reduced bore. The design of flanges based on flexibility and tightness. The development and design of polyester premix moulded flanges is documented. Design, bulletin 502, edition vii, southfield, michigan. Effect of bolt spacing on the circumferential distribution of. Taylor forge modern flange design bulletin 502 k6nqy9dprz4w. Excessive bolt spacing can result in a flange that is more prone to leakage. To produce a complete set of pressure vessel calculations that comply with both customers specifications and asme viii, paragraph ug22, a number of additional engineering references are needed. Btw, for others who are interested, bulletin 502, modern flange design covers the design of flanges per the asme viii1 rules and the design of fullfaced gasket flanges, as well as a wealth of other good information regarding bolting, flange stresses, gasketing, etc. Pressure vessel calculations, codes and ug22 codeware. The subject of full face flange design is limited to the work conducted by very few researchers.
The first and most essential point is to ensure that the flange is in good contact with the screening gasket, with mating surfaces smooth, clean, flat and. Pdf the design of flanges based on flexibility and tightness. In my opinion, this index should replace the eqp method. The study compares the contact stress distribution variations, an analytical developed model based on the theory of rings on elastic foundation, to those given by the finite element model and the simple beam on elastic foundation model developed by koves 2007, flange joint bolt spacing requirements, proceedings of pvp2007, asme pressure. Modern flange design taylor forge engineered products. Many of the pressure vessel calculations needed to properly design a vessel or exchanger are not, by design, contained in the asme viii bpvc itself. The design of a flange involves the selection of the gasket material, type, and dimensions, flange facing, bolting, hub proportions, flange width, and flange thickness. Taylor forge bulletin 502 flange design rapidshare links available for download. The compress flange wizard is a tool that creates optimized appendix 2 flange designs with minimal time and effort. However, formatting rules can vary widely between applications and fields of interest or study. Kilkenny president traditionally dependable modern flange design bulletin 502 documents similar to modern flange design taylor forge engineered products. Pressure vessels require flanged joints to permit their disassembly, inspection and cleaning.
In the case of a nonstandard flange, asme section viii division 2 article ad720 refers to appendix 3, mandatory rules for bolted flange connections. Modern flange design bulletin 502 taylor forge pdf led into the taylor forge publication modern flange design. Taylor forge modern flange design bulletin 502 free download as pdf file. Bolted joints are also utilized to alleviate stresses at sections where sharp temperature changes occur, such as the joint between tubeside and shellside chambers in a heat exchanger fig. The forms and tables have been duplicated here for the users convenience. View mario douglass professional profile on linkedin.
The advantages and disadvantages of press moulded flange systems are discussed from both technical and economic aspects and equipment and techniques used in production and assembly of flanges are described. Industry immediately accepted this convenient system of flangedesign and used it worldwide. Pressure points the official newsletter of hsb global standards. The procedures as outlined herein have been taken entirely from taylor forge bulletin no.
Bolted flange joints are part of pressure vessel and piping components and are. On the use of theory of rings on nonlinear elastic foundation to study the effect of. But the modem flange design is the most complete and tll litle history in the front thope this helps. Taylor forge modern flange design bulletin 502 yield. For cases where no standard flange exists, the more complex rules of asme appendix 2 can be used. Flange dimensions shall be such that the stresses in the flange, calculated in accordance with 27, do not exceed the allowable stresses specified in 28. Flange leackage seating stresses intergraph cadworx. I find this approach in contradiction with one american fundamental work that is the taylor forges modern flange design bulletin 502. I have been using for years taylor forge bulletyn 502 modern flange design.
For this reason, i think the best name of this safety factor is the taylorforge gasket stress index. A new approach to model bolted flange joints with full face gaskets. Since it is the user responsibility to verify the results of the program, im very interested to know if coade is going to change this approach. Designof weld neck flangeas per asme sectionviii division2. Underdesigned swivel ring flanges potential pipeline problem.
The objects in flange design are to ensure that the residual gasket. The design forms are fast and accurate and are accepted throughout the industry. A flanged joint is composed of the following elements. Rahmeyer may 1981 general demystifying cathodic protection spfa bulletin no. Kilkenny president traditionally dependable modern flange design bulletin 502. Appendix 3 rules are adapted from taylor forge and pipe works bulletin 502, modern flange design, in 1938. Taylor forge modern flange design bulletin 502 download as pdf file. The design of bolted flanged according to the appendix 2 will not be described here, as theres already an article about it in the site. Effect of bolt spacing on the circumferential distribution of the. Asme sec viii div 1 flange stress calculation boiler and. This updated version of modern flange design carries on thetradition with a skillful blend of data, graphics, and text. The wellknown taylor forge bulletin 502 modern flange design contained an equation to. Heat exchanger mechanical design annular plate flange joint ring cross section.
Several reference positions in the bibliography section of this bulletin may assist you. Additionally, div 1 cannot be used for pressures below 15 psi 1. Suraram, quthbullapur mandal, hyderabad, 2 associate professor, department of mech, mallareddy engineering college autonomous. As mentioned above, the cover flange can either be calculated using appendix 2 or made from an asme b16. Can anyone explain replies continue below ill leave the explanation of the rationale regarding the selection of specific loads to specific stress calculations toothers, although modern flange design taylor forge bulletin 502 has some good explanations its out of print, but you can find free copies on the internet. The design requirements for a gasket joint in a screened enclosure are primarily that there must be good conductivity between opposing flanges through the gasket. Comparative study of bolt spacing formulae used in bolted. Modern flange design taylor forgetaylorbonney division bulletin 502, edition vii first published 1938 flanges cavitation damage to hydraulic structures awwa william j. The poor leakage performance of flanges with full face gaskets is attributed to the low reliability of the existing design methods, and in particular. Bolted flange design according to asme section viii division 1. Design and analysis of flange coupling 1chandra sekhar katta 2kamana srinivasa rao 1 pg scholar, department of mech, mallareddy engineering college autonomous. Let me know if you have any questions very tly yours, taylor forge engineered systems, inc. Several editions were published since my students years.