[MW:15740] FW: Higher thick Piping Welding SEC-IX : Welder position

 

Dear Eng.Mohammed
good day ,I want ur opinion on following matters .

WPS qualification of Piping higher thickenss above 19mm (Dia 12" to 36") welding with two welders.==SEC IX

Question-1: Is it require one welder should weld entire circumference(ROOT+HOT) ;then second welder weld entire circumference (FILL+CAP)

YES OR NO

. Yes  it will better then 2 welders weld root , filling and cap , the advantage for this method you can  make visual check easy , also you can control the travel speed which will effected about heat input which may change the structural .
Noted that you need to make pre heat before weld and keep the inter pass temperature

Question-2  Both the welder weld half circumference at same time (side-A 12-9-6,,,,SIde-B 12-3-6)===SEC IX

YES OR NO.

 yes you can , but if there is different in skills may be it will effected

Question 3 : OR its depend on WPS how we have qualified with welder situation.(as per Question-1&Question-2)

NO

YES OR NO.

please sent the ASME 9 ,Still now not received

Kindest regards,

Siddig Hamid Mohammed

 Pipe Line Repair  Section Head.

Sudanese Petroleum Pipelines Co. (SPPC)

one of Petrolines for Pipes & Engineering Work Holding Co.

T      +249 187 027223  IP Phone Ext. 7223

F      +249 183 027120

E   sdhamid@sppc-sd.com

W    www.sppc-sd.com

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  today you will get it am sorry for delay

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mohgadir
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