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We have pipe welds (4130 to X80) that X-ray has found small isolated areas that need repair. This x-ray is BEFORE PWHT. Does ASME Sec IX QW-202.3 support me making these repairs without having an additional repair procedure as long as I following the procedure parameters originally used to...

ASME Sec IX QW-442

We weld on Marine Drilling Riser, main tubes and auxiliary lines (Choke, Kill, Mud Boost and Hydraulic Lines).

The problem that I am having is that the WPS that I am using and have used since 2005 is producing hard welds. With in the past six months it has been getting more frequent. Our welds must meet NACE MR-0175, 237HBW max. Lately we have have been getting hardness in the high 200's HBW low 300's...

I did find out that when welding using a DNV WPS in accordance with DNV-OS-C401, which I am, you only need to requalify a different brand if charpy testing was done below -20C or consumable classification is different. I test at -20C so I am ok to change brands.

I have a WPS with the filler metal specification 4130, manufacture Techalloy, F-No. A & A-No. 11. Testing of this procedure had Charpy Impact testing at -20C. Is it acceptable for me to use filler metal from another manufacture other than Techalloy as long as the specification is 4130, F-No. A &...

Is there any ASME or API document that I can reference when questioned by my customer representative or third party inspector?

We are welding stainless steel pipe (316 to 316, 316L to 316L or Duplex to Duplex). Our normal sizes range from 3" to 4" OD and wall thickness ranging from .250" to .600" thick. During the welding of these pipes it has taken us up to 8 hours using GTAW process due to not exceeding our WPS...

In order for me to make this weld in accordance with Section IX, when I am required to weld using a WPS qualified with impact testing, my WPS/PQR should be qualified in and state 5G GTAW for root / hot passes and the 1G SAW filler and cap. Just having my welders qualified to weld GTAW in the 5G...

My WPS is required to be qualified with impact testing.

I have someone saying that if my welder is qualified in the 5G position that it is legal.

If I have a WPS using GTAW root and hot pass and SAW fill and cap that only states 1G position can I weld the GTAW root and hot passes in the 5G position? Is this legal in ASME Section IX? If so where in Section IX can I find this?

I have the 2000 & 2004 and you are correct. The one I am looking at is the newer 44th edition 10/1/2007, effective date 10/1/2008.

Can anyone confirm the contents of API 5L Table 11 - Tolerances for Wall Thickness. If I am reading it correctly it states that pipe with a wall thickness of >0.157" to <0.984" only has a tolerance of +0.0059 / -0.0049. Is this correct and why would it be such a tight tolerance?

Original 8630 Cert Hardness was 229BHN. Vickers Hardness testing after welding 8630 to X80 and stress relieve on 8630 side, top 227 / bottom 235.

The 8630 Material Certs State the Tempering Temp Value Was 1292F

Test Using Vickers 8630 HAZ From Top To Bottom: 330, 302, 314, 287 & 285 X80 HAZ From Top To Bottom: 242, 236, 228, 228 & 232

Preheat was 550F to 690F. GTAW Rod ER80S-D2, SAW Wire Classification EA3K-A3-H8 Made by Union/Thyssen and Flux Designation UV420TTR Made by Thyssen. PWHT was was 1220F.

Any one have suggestions on welding 8630 to X80, GTAW root and hot pass then SAW for the remaining? This is my second try and every time the 8630 HAZ hardness is well over NACE MR0175 requirements.

Any one have suggestions on welding 8630 to X80? This is my second try and every time the 8630 HAZ hardness is well over NACE MR0175 requirements.