CEN/TC 54/WG 53 - C - Design methods

This Part of this document specifies requirements for the design of unfired pressure vessels covered by EN 13445-1:2019 and constructed of steels in accordance with EN 13445-2:2019.
EN 13445-5:2019, Annex C specifies requirements for the design of access and inspection openings, closing mechanisms and special locking elements.
NOTE This Part applies to design of vessels before putting into service. It may be used for in service calculation or analysis subject to appropriate adjustment.

Revision of annex C

Vessels on brackets- Revision of clause 16

New clause 18

Amends clause 9

Amends annex A

This Part of this European Standard specifies requirements for the design of unfired pressure vessels covered by EN 13445-1:2009 and constructed of steels in accordance with EN 13445-2:2009. EN 13445-5:2009, Annex C specifies requirements for the design of access and inspection openings, closing mechanisms and special locking elements. NOTE This Part applies to design of vessels before putting into service. It may be used for in service calculation or analysis subject to appropriate adjustment.

Revision of clause 16, 22 and annex W

Amendment to Annex J for Tubesheets

This Part of this European Standard specifies requirements for the design of unfired pressure vessels covered by EN 13445-1:2009 and constructed of steels in accordance with EN 13445-2:2009. EN 13445-5:2009, Annex C specifies requirements for the design of access and inspection openings, closing mechanisms and special locking elements. NOTE This Part applies to design of vessels before putting into service. It may be used for in service calculation or analysis subject to appropriate adjustment.

Amends subclause 9.7.2.4 Opening reinforcement

This Part of this European Standard specifies requirements for the design of unfired pressure vessels covered by EN 13445-1:2009 and constructed of steels in accordance with EN 13445-2:2009. EN 13445-5:2009, Annex C specifies requirements for the design of access and inspection openings, closing mechanisms and special locking elements. NOTE This Part applies to design of vessels before putting into service. It may be used for in service calculation or analysis subject to appropriate adjustment.

Revision of Annex M

This Part of this European Standard specifies requirements for the design of unfired pressure vessels covered by EN 13445-1:2009 and constructed of steels in accordance with EN 13445-2:2009. EN 13445-5:2009, Annex C specifies requirements for the design of access and inspection openings, closing mechanisms and special locking elements. NOTE This Part applies to design of vessels before putting into service. It may be used for in service calculation or analysis subject to appropriate adjustment.

Amendment to Clause 16 for non-pressure loads and new clause 22

Modifications to clauses 17 and 18

This Part of this European Standard specifies requirements for the design of unfired pressure vessels covered by
EN 13445-1:2009 and constructed of steels in accordance with EN 13445-2:2009.
EN 13445-5:2009, Annex C specifies requirements for the design of access and inspection openings, closing
mechanisms and special locking elements.
NOTE This Part applies to design of vessels before putting into service. It may be used for in service calculation or analysis
subject to appropriate adjustment.

Amendment to flanges Annex G

Design by formula (alternative design factor).
Alternative Design By Formulae method considering a reduced safety factor on tensile strength in order to reduce thicknesses (the so called Alternative Route)

Static design by experimental methods.
Design by experimental methods as an alternative to Design By Analysis and Design By Formulae (bursting and strain gauge testing)

Flat walls supported by stays, stay tubes and other reinforcing elements (only unstayed flat walls are now provided)

Design method for flat ends when fatigue is not the controlling factor; the present method in Clause 10 makes no distinction and may may be too conservative in these cases.

Design method for openings when fatigue is not the controlling factor; the present method in Clause 9 makes no distinction and may be too conservative in these cases.

Reinforced and toroidal bellows.
Reinforced and toroidal bellows in fixed tubesheet Heat Exchangers (only bellows having flat walls are considered now in Clause 14)

This part of this European Standard specifies requirements for the design of unfired pressure vessels covered by EN 13445-1 and constructed of steels in accordance with EN 13445-2.
Annex C of EN 13445-5 specifies requirements for the design of access and inspection openings, closing mechanisms and special locking elements.