This European Standard defines a Calculation method for bolted, gasketed, circular flange joints. Its purposeis to ensure structural integrity and control of leaktightness. The following equations use gasketparameters based on definitions and test methods specified in EN 13555.
1.2 Requirement for use of the Calculation method
Where permitted, the Calculation method is an alternative to design validation by other means e.g.
– special testing;
– proven practice;
– use of standard flanges within permitted conditions.
The Calculation method is applicable to the configurations having:
flanges whose section is given or may be assimilated to those given in Figures 4 to 12;
four or more identical bolts uniformly distributed;
gasket whose section and configuration after loading can be assimilated by one of those given in
flange dimension which meet the following conditions:
a) 0,2 ≤ bF/eF ≤ 5,0; 0,2 ≤ bL/eL ≤ 5,0