UNE-EN 12953-3:2017
Current
The latest, up-to-date edition.
Shell boilers - Part 3: Design and calculation for pressure parts
Hardcopy , PDF
Spanish, Castilian, English
04-26-2017
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 General
5.1 Boilers
5.2 Hot-water generators
5.3 Design of principal welds
5.4 Thermal design of furnaces tubes
5.5 Dimensions of pressure parts
5.6 Establishment of pressures
5.7 Allowances
6 Calculation temperature and nominal design stress
6.1 Calculation temperature
6.2 Nominal design stress
7 Cylindrical shells under internal pressure
7.1 Shell thickness
7.2 Basic calculation
7.3 Boiler support
7.4 Reinforcing pads
8 Openings and branches in cylindrical shells
8.1 General
8.2 Efficiency factor, calculation by way of approximation
and maximum diameter of an unreinforced opening
8.3 Design of openings and branches in cylindrical shells
(efficiency and reinforcement)
9 Ends
9.1 Unstayed dished heads without openings
9.2 Flat unstayed removable closures
9.3 Flange connections
10 Supported flat plates, stays and stiffeners
10.1 Breathing spaces for flat plates
10.2 Stayed flat surfaces
11 Design of isolated openings in shell boiler flat end plates
11.1 Unreinforced isolated openings
11.2 Branch openings
11.3 Manholes, headholes and handholes
12 Unpierced tubes and tube plates
12.1 Thickness of straight tubes subject to external pressure
12.2 Thickness of straight tubes subject to internal pressure
12.3 Wall thickness and ovality of elbows and tube bends
12.4 Stay tubes
12.5 Smoke tubes
12.6 Pitch of tubes
12.7 Thickness of the tube plates within tube nests
13 Furnaces tubes, furnace tube components and reversal
chambers of cylindrical form subject
to external pressure
13.1 Furnaces tubes
13.2 Calculation length of composite furnaces tubes
13.3 Tolerances of furnaces tubes
13.4 Stiffeners
14 Access and inspection openings
14.1 General requirements
14.2 Types and minimum dimensions of access and inspection
openings
14.3 Minimum gasket bearing width and clearance for
access and inspection doors
14.4 Access and inspection openings in flat plates
14.5 Inspection requirements
14.6 Requirements for entry into boilers with a shell
outside diameter greater than 1400 mm
14.7 Accessibility and arrangement of entry and
inspection openings
Annex A (normative) Calculation of tube plate temperatures
Annex B (informative) Calculation form for 'Walker' - type
reverse curve sections or corrugations
Annex ZA (informative) Clauses of this European Standard
addressing essential requirements or other provisions
of the Pressure Equipment Directive
Bibliography
Specifies requirements for the design and calculation of pressure parts of shell boilers as defined in EN 12953-1.
Committee |
CTN 9
|
DevelopmentNote |
Supersedes UNE 9300-1 (1989), UNE 9300-2 (1989), UNE 9300-3 (1990), UNE 9300-4 (1990), UNE 9300-5 (1991), UNE 9300-6 (1991), UNE 9300-7 (1991 EX), UNE 9300 PT8 and UNE 9300 PT9. (09/2003)
|
DocumentType |
Standard
|
Pages |
127
|
PublisherName |
Asociacion Espanola de Normalizacion
|
Status |
Current
|
Supersedes |
Standards | Relationship |
DIN EN 12953-3:2002-08 | Identical |
UNI EN 12953-3 : 2005 | Identical |
EN 12953-3:2016 | Identical |
NS EN 12953-3 : 2002 | Identical |
SN EN 12953-3 : 2016 | Identical |
I.S. EN 12953-3:2016 | Identical |
BS EN 12953-3:2016 | Identical |
DIN EN 12953-3:2013-10 (Draft) | Identical |
NBN EN 12953-3 : 2016 | Identical |
NEN EN 12953-3 : 2016 | Identical |
NF EN 12953-3 : 2016 | Identical |
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