Recent content by r6155

@ LittleInch You can find them in any older edition of ASME VIII-1 Regards

See Fig. UG-34 (p), Fig UG-40 (a-2)......etc.. etc..

It is impossible to draw a conclusion.

ASME VIII -1 UG-43 d) Studded Connections. Connections may be made bymeans of studs. The vessel shall have a flat surface machined on the shell, or on a built‐up pad, or on a properly attached plate or fitting. The distance from the inside surface of the vessel to the bottom of a drilled hole...

@ DekDee Once the manufacturer/ inspector has specific reason to doubt the ability of a welder, the validity of that welder gets terminated. As clearly stated in QW-322, the welders whose validity has been revoked shall requalify. That is, the ordinary renewal coupon is not enough...

P91 welding requires great care. Lack of penetration is a serious problem. No inspection was performed during the root pass of the weld, and I assume the preheating and argon purging weren't inspected either. What else happened that you don't know about?

@ DekDee ????????????? The welder has failed and a retest is required. ??????? ????????????? What does ?????. Could you explain it? Do you understand that the welder is a candidate for an award?

This is due to a lack of inspection at the root of the weld. The welder has failed and a retest is required. The defective weld is not approved.

@Karik87 You said: "It is very difficult for me to explain the test results to Client." Well, you need to read more and take a welding and NDT training course Impact test requires a step-by-step inspection by qualified personnel.

Which test coupon did you select? You need to read more.

And the impact test at the HAZ? Was another test performed?

There are many errors during specimen extraction, machining, and testing. Did you witness all the steps?.

quenched and tempered.

@ David3399 An acceptable approximation of a 2:1ellipsoidal head is one with a knuckle radius of 0.17D and a spherical radius of 0.90D, to simplify some calculations, but they are never applied to dimensional control of 2;1 ellipsoidal. Have you ever performed dimensional control of...

One person must remain outside while you are inside. Both people must maintain eye contact at all times.