If we don't use a backing band the inspector needs to see both sides and our vessels are not designed with internal access to allow that. In order to compete in our industry we cannot add manways to our vessels without pricing ourselves out of business.
Thank you for the ideas!
Thanks SnTMan - yes I think we will be good there as we can use that thin of a backing band on our smaller (24" diameter and under) vessels. Above 24" our backing bands go above 0.10".
We have been working with our steel suppliers for backing bands in a Curve C or D material but not having much...
Section VIII Div 1 UCS. Been using SA36 backing bands on 516-70 vessels for 40 years, now inspector says backing bands need to be impact tested for vessels under -20F. I can try to take exemption by calculating ratio but calculation requires “required” thickness. Since backing band isn’t...
Anyone know how to calculate an impact test exemption for a backing band (Type 2 Joint)? Looking for guidance on determining a required thickness to use in calcs.
Bolt markings are identical for SAE J429 Grade 5 and ASTM A449 Type 1. Are these specifications identical? In other words, if I buy a "Grade 5" bolt, am I automatically getting a bolt that conforms to ASTM A449?
