I have to design a 3" branch connection (OD 95 mm & 9.5 mm WT) on header of 24"OD & 12.7 mm WT.
The branch connection is at 90 degree & 4.5" offset from longitudinal axis of header.
The design code is ASME B 31.3. can any body suggest how to perform the design calc mathematically as...
I had a impact tested PQR (GTAW+SMAW) with P1G1 TO P1G2 material having a coupon thickness 6 mm with 3 mm GTAW & 3 mm SMAW.(Qualification as per ASME sec IX)
so my base metal qualification is 3 to 12 mm with 6 mm GTAW & 6 mm SMAW.
I had another impact tested PQR(GTAW+SMAW+SAW)with P1G1 TO P1G2...
One of my project requirement was to build a CS spool.NACE MR 0103 was involved in the specification
I already build a spool which has got a supporting PQR without pwht.As per NACE MR 0103, welding of p1 materials needs to be done as per RP0472.Road map of RP 0472 gives 3 options.one is pwht...
I have a qualified SS PQR as follows with impact test
Material: SA 312 TP 316L to SA 312 TP 316L(P8G1 TO P8G1)
Process: GTAW with ARGON gas purging
Consumable:ER 316L Filler wire
position : 6G
Thickness: 8.2 mm
By using above PQR, I have developed new WPS with impact test to weld 12.7 mm thick...
I have a impact tested weld procedure(GTAW+SMAW)qualified as per ASME SEC IX & ASME B 31.3 (P1G1 TO P1G2) the PQR coupon was of 12 mm thickness. the weld deposite by GTAW was 4 mm & by SMAW was 8 mm.So I guess base material (T) thickness qualified as per QW403.6 is min 12 mm to max 24 mm
Now I...
I had a PQR(P1G1 TO P1G2)done with 2 Hrs soaking time.I build a spool(CS, A105/A 106 Gr B) which has gone for 2 Hrs soaking time as well.Now customer wants me to weld a mounting on the spool.As per customer spec PWHT is needed for Min 2 Hrs.Service is sour.NACE MR0175 is applicable & max...
I already have a PQR (P1G1 TO P1G2) qualified with EH10K filler wire & F7A6/P6 EH10K Flux by SAW process with PWHT.
Now the customer spec say high manganese fillers are not to be used to weld the Carbon steel material.
Which filler & Flux I should go for?Does I have to qualify a new PQR with...
I have to weld a Duplex stainless steel of P no. 10H .The desing code is ASME B31.3.Code says "PWHT neither required nor prohibited".
How to interprete this statement?
I heard that control of heat input is very essential in welding of Duplex steel.Shall i need to do a PWHT? if yes what PWHT...
I have been objected by one of the TPI that latest NACE MR0175 has restrictions for Sulpher pecentage to 0.025% max for carbon steel(A105 & A 350 LF2).I don't have the latend edition.Can anybody tell me whether it is true & in which para it is mention.
Thanks in advance....
Can anybody help me out.
I have to weld a Duplex stainless steel of P no. 10H .The desing code is ASME B31.3. code only mention that PWHT is required but it does not give PWHT cycle for it.
What cycle i need to follow?
Toughness test is also required in PQR.
