Calculation of Test Pressure Acc. To EN 13445-5 [PDF]

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PED Professional Directive 97/23/EC - Pressure Equipment Directive

06/08/2013

Calculation of test pressure acc. to EN 13445-5 for the standard water pressure test, taking into account temperature dependent material properties without considering the fluid pressure (hydrostatic pressure) Projekt:

Duvaci gara Novoprojektovani cevovod viskog pritiska 2"-SS-9601-0

Wall thickness emin:

5.13 mm

Max. allowable temp.Ts:

412 °C

Max. allowable pressure Ps:

47 bar

Design pressure Pd at Td: Material:

45.5 bar

P265GH (1.0425)( EN 10216-2:2002 )

Type of material: Non austenitic steels acc. to EN 13445-3, 6.2 with A < 30% Testing group:

Testing group 1-3

Design stress

Calculation of test pressure

Allowable design strength fTd of design conditions at design temperature Rp0,2/T =

132.56 MPa

Rp0,2/T / 1.5 = 88.37 MPa

Rm/20 =

410.00 MPa

Rm/20 / 2.4 = 170.83 MPa

fd = fTd =

88.37 MPa

Allowable design strength of design conditions at proof temperature, normally 20 °C Rp0,2/20 =

245.00 MPa

Rp0,2/20 / 1.5 = 163.33 MPa

Rm/20 =

410.00 MPa

Rm/20 / 2.4 = 170.83 MPa

fa =

163.33 MPa

Calculation of the test pressure PT in bar acc. to EN 13445-5

Pt =

105.12 bar

Pt1 = Ps * 1,43 =

67.21 bar

Pt2 = Ps * 1,25 * fa / fTd =

105.12 bar

Pt = max(Pt1, Pt2) with

Exceptions and special cases are to be taken into account according to EN 13445-5! In case of doubt, the original text of the DIN EN 13445 is authoritative.

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