Production Test Coupon Head EN13445

[opdestr]

Hi, i'm currently involved in the fabrication of Pressure Vessels using EN 13445.
This is the first time my company fabricating it using EN 13445 so we are not familiar with it and our NOBO is not very talkative too.

3 of the PV's heads is crown and petal, they use the same material but different thickness.
EN 13445 - 4 2021 Sect. 9.2 point e) 2 specifies that "one test plate per 100 m of longitudinal welds in the case of joint coefficient 0,85 or of welds in
heads except of hemispherical heads in the case of joint coefficient 1,0;"

If the joint coefficient is 1 and i use the same WPS for all 3 PV's, my question do i need 3 PTC for 3 Vessel Head or only 1 PTC for 3 Vessel Head since the same WPS is used?

Thanks.

 

[r6155]

Section 9.2 e)1) is clear
1) for longitudinal welds, one test plate per vessel in the case of joint coefficient 1,

Regards