Map Weld

[Alejandro]

Hello Everybody,

I've got a big problem with a client with our Map Weld. Our Map Weld only make reference to the number of WPS/PQR used in the project, and doesn't show any detail about joint preparation and number of phases for each weld, so my client asked me that we must show all the joint preparation and all detail about the weld joint in the map weld, is this request by ASME Code o another one?.

If somebody has a example please share with me.

Thanks in advance

[BornToSin]

wps must include a lot of variables; most important of all it's pqr(s) that wps is based on....then; filler metal type and diameters, shielding gas type (if it's gtaw or fcaw/gmaw), heat input, welding travel speed, preheating and interpass temperature, joint type (sketch mostly), range of covering based on pqr(s); diameters and thicknesses, materials group etc. etc. etc...

[Alejandro]

wps must include a lot of variables; most important of all it's pqr(s) that wps is based on....then; filler metal type and diameters, shielding gas type (if it's gtaw or fcaw/gmaw), heat input, welding travel speed, preheating and interpass temperature, joint type (sketch mostly), range of covering based on pqr(s); diameters and thicknesses, materials group etc. etc. etc...

yes you are rigth BorToSin, that information is in our WPS and back up by PQR, but my question is We must show i.e bevel preparation if this is on WPS?

Ragards.,

[BornToSin]

sorry, I did not quite understood the question..
you only have to put that information in your welding map only if it's in contract...if it's not, I don't think there is some standard that says if you have all you need in wps's (acc. to specified standard (ad2000, asme, en 12952, 13445 etc.)
usually, the what you called "welding map", consists of welding plans, pwht diagrams, welders certificates, calibration informations, wps's, pqrs..regular documentations

[inconel]

Borntosin,

I think, Alejandro is discussing about the isometric or any other fabrication drawing which explain the number of joints and its characterstics.Which is normally known as weld map.Painting,PWHT and extend of NDT are normally indicated in the drawing before releasing for construction.But other welding related details slightly difficult to incorporate during design stage.So,we have to show the relevant WPS Number,Electrode/Filler wire ,Welding Process on the drawing/Weldmap to avoid confusion during construction/fabrication stage .As far as I am concerned in piping,pipeline or equipment , there is no need to show joint configuration in the drawing as it is clearly mentioned in the approved WPS.However,some clients may insist to incorporate joint details in the drawing/weld map.ASME BPV is silent on this as it is out of it's scope.