PN Flange test pressure 2

[Bridgy]

Can anyone tell if the maximum test pressure is stated in the latest standard for PN designated flanges (BS EN1092-1 2007) Previous std (BS 4504) stated 1.5 x nominal pressure rating.
I cannot find any reference to maximum hydrotest pressure in the latest standard.

 

[waterpipe]

Haven't work with BS EN1092-1 2007 personally but in Annex E it states:

- Nominal design stress:
at operation 140 MPa;
at assembly and testing 200 MPa (Ptest=1.43×PN)

Hope this helps.

 

[Cockroach]

To my knowledge, it is still 1.5X; I use 1.1 for the Seat test in Ball Valves, but that's just me.

Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada

 

[micalbrch]

I agree with Kenneth, still 1.5 x.

 

[europipe]

I agree with waterpipe,
acc. PED it's 1.43xPN

So that's 2-2.

Greetings

 

[SNORGY]

CSA Z662-07 Clause 8.19.5(b) and Table 8.1 (see also Clause 8.15.1.3), CSA Z245.12-05 Clause 5.2.3 and Table B.1 suggest to me (1.5 x MOP), but I admit I am having trouble finding where this is stated explicitly with no need for interpretation.

So, it's 3-2...just not sure who's leading.

Regards,

SNORGY.

 

[SNORGY]

Quoting the man I admire most in this universe...

"D'OH!"

Of course, I *meant* 1.5 x flange rating, not MOP.


Regards,

SNORGY.

 

[SNORGY]

What I meant to say was 1.5 x flange rating.

Proofing before posting...

Regards,

SNORGY.