Tube to tubesheet of QW-193 request
Tube to tubesheet of QW-193 request
(OP)
Actually situation tube to tubesheet shape
tube side 25.4 od and 2.6 thickness
tubesheet 40 thickness
all material is P no. 1
tube hole pitch 32 triangle
only fillet welding for tube to tubesheet and leg size 2mm.
tube hole with 2 grooves and expansion after welding
Perform QW-193 mockup test is required by client.
As caption subject,
QW-288 is tube-to-tubesheet quanification essential variables required by code,
is there any request the test piece (tubesheet) thickness to be following up ?
I mean, if I perform the QW-193 mockup test, what's thickness for tubesheet test piece does need ?
Other questions, for QW-288.1(p) , shall we follow up the same shape as actually tube hole (2 groove and expansion)
into test piece, or no need ?
tube side 25.4 od and 2.6 thickness
tubesheet 40 thickness
all material is P no. 1
tube hole pitch 32 triangle
only fillet welding for tube to tubesheet and leg size 2mm.
tube hole with 2 grooves and expansion after welding
Perform QW-193 mockup test is required by client.
As caption subject,
QW-288 is tube-to-tubesheet quanification essential variables required by code,
is there any request the test piece (tubesheet) thickness to be following up ?
I mean, if I perform the QW-193 mockup test, what's thickness for tubesheet test piece does need ?
Other questions, for QW-288.1(p) , shall we follow up the same shape as actually tube hole (2 groove and expansion)
into test piece, or no need ?





RE: Tube to tubesheet of QW-193 request
Next, you follow Section IX requirements, which means the coupon should be identical to the production tube to tubesheet weld joint - simulating tubesheet thickness and tube OD and wall thickness.
RE: Tube to tubesheet of QW-193 request
Other question,
The QW-193 mock-up had been required by client.
If I follow up the QW-288 essential variables,
shall I also follow up general GTAW QW-256 essential variables ?
RE: Tube to tubesheet of QW-193 request