Help on tubesheet to shell weld for a S&T heat exchanger
Help on tubesheet to shell weld for a S&T heat exchanger
(OP)
Good morning everybody.
I need some help on the topic in the object.
I have a heat exchanger with steam/water tube side, and a non-corrosive liquid/vapour shell side.
The HE is also subject to fatigue.
We usually ask for welds to be done as in UW-13.2 (d), but for similar applications we have done UW-13.3 (a) steam/water side in the past.
Considering EN 13445, I would say the UW-13.2 (d) is a joggle joint (not sure, is it?). Therefore it cannot be used with water/steam as per EN 13445-3 para. 5.7.4.1.
I don't see any limitation within ASME VIII div. 1, so I figure out I can freely choose either one or the other.
Am I right, or is there something I am missing?
Thanks in advance.
Claudio
I need some help on the topic in the object.
I have a heat exchanger with steam/water tube side, and a non-corrosive liquid/vapour shell side.
The HE is also subject to fatigue.
We usually ask for welds to be done as in UW-13.2 (d), but for similar applications we have done UW-13.3 (a) steam/water side in the past.
Considering EN 13445, I would say the UW-13.2 (d) is a joggle joint (not sure, is it?). Therefore it cannot be used with water/steam as per EN 13445-3 para. 5.7.4.1.
I don't see any limitation within ASME VIII div. 1, so I figure out I can freely choose either one or the other.
Am I right, or is there something I am missing?
Thanks in advance.
Claudio





RE: Help on tubesheet to shell weld for a S&T heat exchanger
And for fatigue a full penetration detail is preferred.
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand
RE: Help on tubesheet to shell weld for a S&T heat exchanger
Besides, UW 13.3 (a) is butt-weld and can be radiographed.
Regards
r6155