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Dear Sirs, I have start a pipeline project which is subject to ASME B31.1, so the PQRs should be done according to ASME Section IX. Also, in the project is mentioned that it should comply with PED 2014/68/EU. I discussed with an ASME Inspector and he told me that PED directive is requiring...

Hello. Thank you very much for your opinions. The cracks were on the inside, on the cladding side. Finally, they remove the cracks, but they didn't want to weld. I think they will monitor the evolution of the vessel during operation.

Hi everyone! We have a situation on a pressure vessel made of 16Mo5+1.4002 (85mm+5mm cladding) where the NDT company have encounter cracks on circumferential welds. Our client agree only to remove the cracks by grinding but without any further welding. The medium is hydrocarbons with...

Hello. I am searching for the standard USAS B16.5/ 1968. We have to prepare test blinds for some equipments which were made in 70's. In these equipments, the nozzles appeared with the following notation: Flange SI DN80 PN63,3 according to USAS B16.5/ 1968. The diameter of bolt circle is 170...

Good afternoon. I have a situation where I have to weld a 304H pipe to a P11 pipe. (D=1800mm) I was thinking at 2 options: 1. Welding directly with ENiCrFe-3 (no PWHT, no preheat) 2. Deposit on P11 pipe an EniCrFe-3 layer (above 6mm), after that make the PWHT of the bevel and then weld the P11...

In this case you have to do it. (it's the client request). Make sure if the hardness is HV5 or HV10. Once i had a dispute about it, so maybe it will be helpful for you. I suppose you can try also with a TQ, if you don't wanna do it.

Hello. I saw that in ASME B31.3-2014 edition they took out the table with the requirements for the hardness test, so you don't have any reference. (maybe in the client specifications you can find something). Do you have any supplementary requirements, such as NACE?

The analyze of the mechanical properties showed a value of the yield strength = 372 MPa (this is for a pipe with dimensions 60.3x8.74) It could be a mistake from the producer.

Is the material specification relevant (if it's supplied in accordance with EN or ASME)? Does this affect the grouping of the material? Thank you for your time and answers!

We collaborate with Bohler. We used for material X10CrMoVNb9-1 (Werk. 1.4903) the following filler materials: 1. GTAW - Trade name: BÖHLER C9 MV-IG; 2. SMAW - Trade name: BÖHLER FOX C9 MV

Hello. I've made a WPQR acc. to EN ISO 15614-1 with the base material P355NL1. According to the certificate the chemical composition, mechanical properties and it's delivery status (normalization) I put the material in subgroup 1.3 according to ISO 15608. The inspector follow CEN ISO/TR 20172...

I am asking because I am making the qualification of the welders with a company (no.1), which has the company-mother (no.2) in another country and on the welder certificate it is written that the witnessing company is company-mother (no.2), but the other company (no.1) can make welder...

Hi, all! Does anybody know if PED allows a manufacturer from a country to give permission to another manufacturer from another country to witness the approval of personnel qualification? Thank you!

Thank you for your answer, metengr. I was asking because I saw that many companies are doing the preheat with the electrical resistance, and I was wondering if using propane it's a problem due hydrogen content. I think that if you are using only GTAW, with low hydrogen filler metal and you...

Hello. It is possible to use propane for preheating A335 P5? Thank you!

This is how it looks after welding. Taking in account that the medium it's H2S, I am more worried. The bevel between the weld and the elbow in some part it's very sharp, so in this case it's possible to be a stress concentration point. Best regards.

Good evening. I have a doubt about an elbow that I received. It's a 90deg elbow 10 inch sch 120. It came with an extra bevel of the exterior part of the short radius like in the photo attached. It is normal to be like that? Thank you...

Hello. Can you provide the thickness(es) of the base materials. The first material is a creep resistant steel (group 5.2 acc. to EN ISO 15608), and the second one is a carbon steel (group 1.2 acc. to EN ISO 15608). From what I learn and what I saw in my little experience, when you weld this...