CR 13642:1999

A code which properly treats all load conditions (assembly, test, and all service conditions) is TGL 32903/13 (1983), a national standard of the former German Democratic Republic. Variants of this have been in use since 1973 and
it has been applied to the design of thousands of gasketed joints without leakage problems. Therefore when
CEN/TC/74/WG 10 was requested to produce a design procedure for gasketed joints, the TGL method was chosen
as the basis. At the request of CEN/TC 54/WG C the scope of the TGL version was extended, with basic principles
unchanged. The established validity was unaffected by this extension but behaviour in the new domain has yet to
be verified. Examples of validation tests for the original domain are given in Annex B.