Follow-up to thread815-444241
The engineer has been disciplined by the professional association because he "did not practise in a careful and diligent manner" for this bridge that collapsed and 5 other bridges (that did not collapse but had significant deficiencies).
The discipline order...
Does anybody have any experience getting a CRN from ABSA on equipment that includes an ISO 27509 Compact Flange? It's not a listed standard in ASME B31.3 and the shape is a bit different from what is shown for the ASME Section VIII Div 1 and 2 flange calculations, so it looks like it could be a...
Table 323.2.2 box B-3 has been revised in the 2020 Edition of B31.3. This appears to be a new requirement for charpy testing after simulated PWHT that would apply to unlisted materials, unless the “comparable” listed material option in box 7 is used. Previously, charpy testing after welding (and...
For pressure piping and/or pressure vessel manufacturers who subcontract NDE, including having a certified Level II RT tech interpret the film, do you as the manufacturer also review the film? If so, in how much depth are you reviewing it, and do you review 100% of film or only a sample of the film?
I know that forging reduction ratio is defined as the ratio of the original to the final cross-sectional area. However, I've recently encountered the suggestion that if an ingot is upset to increase the cross-sectional area before being forged to reduce the cross-sectional area, the reduction...
The diagram below shows the grain direction for longitudinal and transverse charpy tests. If the grain direction for the charpy test is not in either of the orientations shown, but is instead coming out of the page (orthogonal to both orientations shown), would that also be classified as a...
Regarding 1.22in (31mm) diameter 4140 bar with the following heat treatment:
Normalize 4 hours at 1580°F (860°C)
Austenitize 3.5 hours at 1562°F (850°C)
Quench in Oil - 82 to 88°F (28 to 31°C) bath temperature
Temper 6.5 hours at 1247°F (675°C)
The requirements for this material are 80ksi...
4130 low alloy steel is not a listed material in ASME B31.3. B31.3 section K323.1.2 states: "An unlisted material may be used provided it conforms to a published specification covering chemistry, physical and mechanical properties, method and process of manufacture, heat treatment, and quality...
We're practicing engineering in Alberta and APEGA (our engineering professional body) requires us to use either a traditional stamp and signature or a digital stamp and signature to authenticate documents. We are interested in moving to digital. APEGA requires that if a digital signature is...
We order material from various suppliers and we track the MTRs by the supplier's heat code. Occasionally, we'll get two different materials from two different suppliers, but each supplier has labeled their material with the same heat code (ie. material from supplier A with heat code XYZ and...
We've been welding 4130 steel with 75 ksi minimum yield for sour service oil and gas applications quite successfully for a while. We're now looking at welding 4130 steel with 100 ksi minimum yield for a standard service oil and gas application. The standard service application has no H2S, so we...
B31.3 331.1.7 requires hardness testing of production welds and sets the limits for Max Brinell Hardness in Table 331.1.1. I'd prefer to use Brinell testing in accordance with ASTM E10 or E110. I have a supplier that wants to use an ultrasonic portable hardness tester (does not meet ASTM E10 or...
